Patent Publication Number: US-9890014-B2

Title: Medium conveyance device and medium transaction device

Description:
TECHNICAL FIELD 
     The present disclosure relates to a medium conveyance device and a medium transaction device, well-suited for application to, for example, a banknote pay-out device that pays out banknotes serving as a medium. 
     BACKGROUND ART 
     Hitherto, banknote pay-out devices that pay out cash such as banknotes or coins in response to a request by a user are widely employed in financial institutions and the like. 
     Proposals exist for banknote pay-out devices including, for example, a banknote storage box that store banknotes, a stacking section that stacks banknotes conveyed from the banknote storage boxes into banknote bundles, a bundle conveyance section that conveys the banknote bundles, and a pay-out port that hands over the banknotes to a user. See, for example, Japanese Patent No. 4094242 (in particular, FIG. 1). 
     SUMMARY OF INVENTION 
     Technical Problem 
     In bundle conveyance units of such a configuration, upper and lower conveyor belts are disposed so as to sandwich a bundle conveyance path conveying banknote bundles, from above and below. The conveyor belts are run in both directions. The bundle conveyance unit thereby sandwiches a stacked banknote bundle from above and below and conveys the banknote bundle along the conveyance path toward the front or toward the rear while maintaining the stacked state. The bundle conveyance unit also transports a banknote bundle stacked in a stacking section up to the bundle conveyance path by moving a lower side conveyor belt in the vertical direction. 
     However, generally, when moving conveyor belts, a motive power source (for example a motor) for driving a belt section, a drive force transmission mechanism, and the like are also moved as a single unit, resulting in a comparatively heavy weight. Accordingly, in related technology, the mechanism for moving the conveyor belts becomes substantial, and the configuration becomes more complicated. 
     In consideration of the above circumstances, the present disclosure proposes a medium conveyance device and a medium transaction device capable of conveying a stacked medium by a simple configuration. 
     Solution to Problem 
     A medium conveyance device of a first aspect of the present disclosure includes a placement body including a bundle conveyance face on which a medium bundle configured by stacking plural medium into a bundle shape is conveyed in a state placed on the bundle conveyance face, and a Scott-Russell body including an abutting portion that abuts the medium bundle. Such a medium conveyance device also includes a moving section that causes at least a portion of the Scott-Russell body to abut against the medium bundle and that moves the Scott-Russell body in a first direction along the bundle conveyance face, or in a second direction opposite to the first direction, so as to move the medium bundle along the bundle conveyance face in the first direction or in the second direction. Such a medium conveyance device also includes a conveyance state switching section that switches to a first conveyance state or a second conveyance state in a case in which the Scott-Russell body is moved by the movement section, the first conveyance state in which at least a portion of the Scott-Russell body is caused to abut against the second direction side of the medium bundle and conveyance of the medium bundle toward the first direction is enabled, the second conveyance state in which at least a portion of the Scott-Russell body is caused to abut against the first direction side of the medium bundle and conveyance of the medium bundle toward the second direction is enabled. 
     A second aspect of the present disclosure is the first aspect, wherein the conveyance state switching section further includes a retract-and-return section that retracts the Scott-Russell body from a bundle conveyance path through which the medium bundle passes as it moves along the bundle conveyance face, or returns a portion of the Scott-Russell body to within the bundle conveyance path by utilizing a force of the movement section to move the Scott-Russell body. The conveyance state switching section also includes a relative position switching section that in a retracted state of the Scott-Russell body from the bundle conveyance path switches a position of the Scott-Russell body relative to the medium bundle to the first direction side or to the second direction side. 
     A third aspect of the present disclosure is the second aspect, wherein the retract-and-return section includes a post that is provided to the Scott-Russell body, and a slide groove that lets the post slide accompanying movement of the Scott-Russell body by the movement section. The slide groove is formed with a shape following the bundle conveyance face in a movement region in which the medium bundle is moved by the Scott-Russell body, and is formed along a direction intersecting the first direction or the second direction in a retraction region where the Scott-Russell body is retracted from the bundle conveyance path. 
     A fourth aspect of the present disclosure is the third aspect, wherein when in an orientation for moving the medium bundle the Scott-Russell body positions the post further to the first direction side or further to the second direction side than a swing shaft about which the Scott-Russell body swings. 
     A fifth aspect of the present disclosure is the fourth aspect, wherein within the retraction region the slide groove includes a pull-back region in which the post is pulled back further from the swing shaft in a direction intersecting the bundle conveyance face than in the movement region. 
     A sixth aspect of the present disclosure is the third aspect, wherein in the retraction region the Scott-Russell body retracts from the bundle conveyance path by transitioning to an orientation different from an orientation of the Scott-Russell body when in the movement region. 
     A seventh aspect of the present disclosure is the sixth aspect, wherein the slide groove forms a circuit path including the retraction region, and is provided with a switch to switch a direction of progress of the post at connection portion to the movement region. 
     An eighth aspect of the present disclosure is the third aspect, wherein in the Scott-Russell body the abutting portion is disposed on the opposite of the post, with respect to a swing shaft about which the Scott-Russell body swings. With respect to the movement region, the retraction region is formed running toward the opposite direction to a direction in which the abutting portion is pulled back from the bundle conveyance face. 
     A ninth aspect of the present disclosure is the second aspect, wherein the relative position switching section moves the medium bundle toward the first direction or toward the second direction of the Scott-Russell body. 
     A tenth aspect of the present disclosure is the ninth aspect, wherein the relative position switching section is provided on the first direction side of the placement body, and is configured by a placement conveyor belt that conveys the medium bundle toward the first direction or toward the second direction. 
     An eleventh aspect of the present disclosure is the second aspect, wherein the relative position switching section moves the Scott-Russell body to the first direction side or to the second direction side of the medium bundle. 
     A twelfth aspect of the present disclosure is the eleventh aspect, wherein the retract-and-return section includes a post that is provided to the Scott-Russell body, and a slide groove that lets the post slide accompanying movement of the Scott-Russell body by the movement section. The slide groove is formed with a shape following the bundle conveyance face in a movement region in which the medium bundle is moved by the Scott-Russell body, and is formed with a region that moves the post toward the first direction or toward the second direction in a retraction region where the Scott-Russell body is retracted from the bundle conveyance path. 
     A thirteenth aspect of the present disclosure is the first aspect, wherein the bundle conveyance face of the placement body includes a groove formed running in the first direction or in the second direction and the Scott-Russell body includes a claw-shaped portion. When the medium bundle is being moved along the bundle conveyance face in the first direction or the second direction, the claw-shaped portion extends toward the placement body from an abutting area abutting the medium bundle so as to be positioned inside the groove. 
     A fourteenth aspect of the present disclosure is the first aspect, further including an opposing conveyor belt that runs along an opposing face opposing the bundle conveyance face, and that conveys the medium bundle sandwiched between the bundle conveyance face and the opposing conveyor belt. 
     A fifteenth aspect of the present disclosure is the first aspect, wherein the Scott-Russell body includes a first abutting portion that abuts the medium bundle if the Scott-Russell body has approached the bundle conveyance face on the first direction side of the medium bundle, a second abutting portion that abuts the medium bundle if the Scott-Russell body has approached the bundle conveyance face on the second direction side of the medium bundle, a coupling portion that couples the first abutting portion and the second abutting portion together, and a swing section that swings the coupling portion, the first abutting portion, and the second abutting portion further away from the bundle conveyance face than the medium bundle. The conveyance state switching section causes either the first abutting portion or the second abutting portion to approach the bundle conveyance face, and causes the other of the first abutting portion or the second abutting portion to be distanced further from the bundle conveyance face, by utilizing force of the movement section to move the Scott-Russell body so as to swing the Scott-Russell body about the swing section. 
     A sixteenth aspect of the present disclosure is the fifteenth aspect, wherein the conveyance state switching section includes a guide face along the first direction or the second direction, the Scott-Russell body includes a contact portion that contacts the guide face during movement of the Scott-Russell body in the first direction or the second direction, and the conveyance state switching section switches the Scott-Russell body to either the first conveyance state or the second conveyance state by switching a direction of progress of the Scott-Russell body. 
     A seventeenth aspect of the present disclosure is the sixteenth aspect, wherein the guide face is formed at one or more locations with a cavity that is a greater distance from the bundle conveyance face than the periphery of the cavity. The contact portion is configured such that in an orientation of the Scott-Russell body in which both the first abutting portion and the second abutting portion are pulled back from the bundle conveyance face a portion of the contact portion reaches inside the cavity, and when the contact portion abuts the guide face at a location other than the cavity, either the first abutting portion or the second abutting portion is caused to approach the bundle conveyance face, and the other out of the first abutting portion or the second abutting portion is distanced further from the bundle conveyance face. 
     An eighteenth aspect of the present disclosure is the seventeenth aspect, wherein the contact portion is configured by a rotatable roller, and the guide face is provided at one or more locations with a recess that increases the distance from the Scott-Russell body. When the direction of progress of the Scott-Russell body is switched, the guide face causes the roller to temporarily engage with the recess so as to switch the Scott-Russell body to the first conveyance state or to the second conveyance state. 
     A nineteenth aspect of the present disclosure is the seventeenth aspect, wherein the contact portion is capable of elastic deformation toward the opposite side to the direction of progress of the Scott-Russell body, and the guide face includes plural of the cavities disposed along the first direction or the second direction. After the direction of progress of the Scott-Russell body has been switched, the guide face causes the contact portion to temporarily abut a side edge of one of the cavities so as to swing the Scott-Russell body and switch the Scott-Russell body to the first conveyance state or to the second conveyance state. 
     A medium conveyance device of a twentieth aspect of the present disclosure includes a stacking section that creates a medium bundle by stacking plural medium to be transacted into a bundle shape, a placement body including a bundle conveyance face on which the medium bundle is conveyed in a state placed on the bundle conveyance face, and a Scott-Russell body including an abutting portion that abuts the medium bundle. Such a medium conveyance device also includes a moving section that causes at least a portion of the Scott-Russell body to abut against the medium bundle and that moves the Scott-Russell body along the bundle conveyance face in a first direction, or in a second direction opposite to the first direction, so as to move the medium bundle along the bundle conveyance face in the first direction or in the second direction. Such a medium conveyance device also includes a conveyance state switching section that switches to a first conveyance state or a second conveyance state in a case in which the Scott-Russell body is moved by the movement section, the first conveyance state in which at least a portion of the Scott-Russell body is caused to abut against the second direction side of the medium bundle and conveyance of the medium bundle toward the first direction is enabled, the second conveyance state in which at least a portion of the Scott-Russell body is caused to abut against the first direction side of the medium bundle and conveyance of the medium bundle toward the second direction is enabled. 
     The present disclosure enables the medium bundle on a bundle conveyance face of the placement body to be conveyed by the Scott-Russell body in both the first direction and the second direction, and utilizes the force applied by the movement section in order to switch the Scott-Russell body to the first conveyance state or to the second conveyance state. Accordingly, the present disclosure does not need to provide a motive power source to the Scott-Russell body to generate motive power, enabling the Scott-Russell body to be configured more simply and lighter, and accordingly enabling the movement section to also be configured more simply. 
     Advantageous Effects of Invention 
     According to the present disclosure, a medium conveyance device and a medium transaction device capable of conveying a stacked medium can be realized with a simple configuration. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a schematic diagram illustrating an overall configuration of a banknote pay-out device. 
         FIG. 2A  is a schematic diagram illustrating configuration of a bundle conveyance unit according to a first exemplary embodiment. 
         FIG. 2B  is a schematic diagram illustrating configuration of a bundle conveyance unit according to the first exemplary embodiment. 
         FIG. 3  is a schematic perspective view illustrating configuration of a Scott-Russell section and a moving section according to the first exemplary embodiment. 
         FIG. 4A  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the first exemplary embodiment. 
         FIG. 4B  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the first exemplary embodiment. 
         FIG. 4C  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the first exemplary embodiment. 
         FIG. 5A  is a schematic diagram illustrating a conveyance operation ( 2 ) of a banknote bundle according to the first exemplary embodiment. 
         FIG. 5B  is a schematic diagram illustrating a conveyance operation ( 2 ) of a banknote bundle according to the first exemplary embodiment. 
         FIG. 5C  is a schematic diagram illustrating a conveyance operation ( 2 ) of a banknote bundle according to the first exemplary embodiment. 
         FIG. 6A  is a schematic diagram illustrating a configuration of a bundle conveyance unit according to a second exemplary embodiment. 
         FIG. 6B  is a schematic diagram illustrating a configuration of a bundle conveyance unit according to the second exemplary embodiment. 
         FIG. 7A  is a schematic diagram illustrating a conveyance operation of a banknote bundle according to the second exemplary embodiment. 
         FIG. 7B  is a schematic diagram illustrating a conveyance operation of a banknote bundle according to the second exemplary embodiment. 
         FIG. 7C  is a schematic diagram illustrating a conveyance operation of a banknote bundle according to the second exemplary embodiment. 
         FIG. 7D  is a schematic diagram illustrating a conveyance operation of a banknote bundle according to the second exemplary embodiment. 
         FIG. 8A  is a schematic diagram illustrating configuration of a Scott-Russell section according to a third exemplary embodiment. 
         FIG. 8B  is a schematic diagram illustrating configuration of a Scott-Russell section according to the third exemplary embodiment. 
         FIG. 9A  is a schematic diagram illustrating configuration of a moving section according to the third exemplary embodiment. 
         FIG. 9B  is a schematic diagram illustrating configuration of a moving section according to the third exemplary embodiment. 
         FIG. 10A  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the third exemplary embodiment. 
         FIG. 10B  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the third exemplary embodiment. 
         FIG. 10C  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the third exemplary embodiment. 
         FIG. 11A  is a schematic diagram illustrating a conveyance operation ( 2 ) of a banknote bundle according to the third exemplary embodiment. 
         FIG. 11B  is a schematic diagram illustrating a conveyance operation ( 2 ) of a banknote bundle according to the third exemplary embodiment. 
         FIG. 12A  is a schematic diagram illustrating configuration of a Scott-Russell section according to a fourth exemplary embodiment. 
         FIG. 12B  is a schematic diagram illustrating configuration of a Scott-Russell section according to the fourth exemplary embodiment. 
         FIG. 13  is a schematic diagram illustrating configuration of a moving section according to the fourth exemplary embodiment. 
         FIG. 14A  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the fourth exemplary embodiment. 
         FIG. 14B  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the fourth exemplary embodiment. 
         FIG. 14C  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the fourth exemplary embodiment. 
         FIG. 15A  is a schematic diagram illustrating a conveyance operation ( 2 ) of a banknote bundle according to the fourth exemplary embodiment. 
         FIG. 15B  is a schematic diagram illustrating a conveyance operation ( 2 ) of a banknote bundle according to the fourth exemplary embodiment. 
         FIG. 16A  is a schematic diagram illustrating configuration of a bundle conveyance unit according to a fifth exemplary embodiment. 
         FIG. 16B  is a schematic diagram illustrating configuration of a bundle conveyance unit according to the fifth exemplary embodiment. 
         FIG. 16C  is a schematic diagram illustrating configuration of a bundle conveyance unit according to the fifth exemplary embodiment. 
         FIG. 17A  is a schematic diagram illustrating a change in orientation of a Scott-Russell section according to the fifth exemplary embodiment. 
         FIG. 17B  is a schematic diagram illustrating a change in orientation of a Scott-Russell section according to the fifth exemplary embodiment. 
         FIG. 18A  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the fifth exemplary embodiment. 
         FIG. 18B  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the fifth exemplary embodiment. 
         FIG. 18C  is a schematic diagram illustrating a conveyance operation ( 1 ) of a banknote bundle according to the fifth exemplary embodiment. 
         FIG. 19  is a schematic diagram illustrating a conveyance operation ( 2 ) of a banknote bundle according to the fifth exemplary embodiment. 
         FIG. 20  is a schematic diagram illustrating a configuration of a bundle conveyance unit according to a sixth exemplary embodiment. 
         FIG. 21A  is a schematic diagram illustrating a change in orientation of a Scott-Russell section according to the sixth exemplary embodiment. 
         FIG. 21B  is a schematic diagram illustrating a change in orientation of a Scott-Russell section according to the sixth exemplary embodiment. 
         FIG. 22A  is a schematic diagram illustrating configuration of a bundle conveyance unit according to a seventh exemplary embodiment. 
         FIG. 22B  is a schematic diagram illustrating configuration of a bundle conveyance unit according to the seventh exemplary embodiment. 
         FIG. 23A  is a schematic diagram illustrating configuration of a bundle conveyance unit according to another exemplary embodiment. 
         FIG. 23B  is a schematic diagram illustrating configuration of a bundle conveyance unit according to another exemplary embodiment 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Explanation follows regarding exemplary embodiments of the present disclosure, with reference to the drawings. 
     1. First Exemplary Embodiment 
     1-1. Banknote Pay-Out Device Configuration 
     As illustrated in schematic side view in  FIG. 1 , a banknote pay-out device  1  according to a first exemplary embodiment is what is referred to as a cash dispenser, for installation in financial institutions, various commercial premises, or the like. The banknote pay-out device  1  pays out banknotes in response to operation by a user (namely a customer or the like of the financial institution or the commercial premises). The banknote pay-out device  1  has a configuration broadly divided into a storage unit  2  on a lower side, and a bundle conveyance unit  3  on an upper side, and incorporates a controller  4  that controls the overall banknote pay-out device  1 . 
     The controller  4  is configured around a Central Processing Unit (CPU), not illustrated in the drawings, and performs processing such as pay-out processing by reading and executing a predetermined program from Read Only Memory (ROM), flash memory, or the like, not illustrated in the drawings. The controller  4  also includes an internal storage section configured by Random Access Memory (RAM), a hard disk drive, flash memory, or the like, and stores various information in the storage section. 
     In the following explanation, the side of the banknote pay-out device  1  faced by a user is defined as the front side, and the opposite side thereto is defined as the rear side. The left side and the right side left are respectively defined by the left and right from the perspective of a user facing the front side, and the upper side and lower side are also defined from the perspective of a user facing the front side. 
     In the storage unit  2 , plural sections that perform various processing relating to banknotes are incorporated inside a rectangular block shaped storage casing  10 . Four banknote storage boxes  11 , a conveyance section  13 , a classification section  14 , a switching section  15 , a stacking section  16 , and a reject storage box  17  are provided inside the storage casing  10 . 
     The banknote storage boxes  11  are attached one on top of the other from the vertical direction central position toward the lower side at the front side of the storage casing  10 , and are respectively stored with banknotes of a predetermined denomination. A feed-out section is provided at a rear side lower portion of each banknote storage box  11 , to separate and feed out stored banknotes one note at a time. 
     The conveyance section  13  configures a conveyance path, this being a path along which banknotes are conveyed, from rollers, belts, and a motor or the like that drives them, not illustrated in the drawings. As shown by solid lines in the drawings, the conveyance path is connected to the feed-out section of each banknote storage box  11 , and is disposed so as to advance along the vertical direction at the rear side of the respective banknote storage boxes  11  before reaching the vicinity of a front-rear direction central position at the upper side of the banknote storage box  11  at the uppermost position. The conveyance section  13  moves banknotes fed out from the feed-out sections of the respective banknote storage box  11  substantially upward. 
     The classification section  14  is provided along the conveyance path of the conveyance section  13 , at the rear side of the banknote storage box  11  positioned at the uppermost side. Plural sensors of various types, such as a thickness sensor and an image sensor, are incorporated inside the classification section  14 . The classification section  14  classifies the denomination, travel state, and so on of conveyed banknotes based on information obtained from the respective sensors, and supplies the classification results to the controller  4 . The controller  4  determines the conveyance destination of each banknote based on the acquired classification results. Specifically, the controller  4  determines the stacking section  16  to be the conveyance destination for normal banknotes that are suitable for pay-out, and determines the reject storage box  17  to be the conveyance destination for banknotes that are unsuitable for pay-out (referred to below as reject banknotes). 
     The switching section  15  is disposed substantially at the front-rear direction center at the upper side of the uppermost banknote storage box  11 . Under the control of the controller  4 , the switching section  15  switches the banknote direction of progress by changing an angle of inclination of a blade (illustrated in a triangular shape in the drawings) that contacts banknotes so as to change their direction of travel. The switching section  15  is connected through the conveyance section  13  to the classification section  14  at the lower side, the stacking section  16  at the rear side, and the reject storage box  17  at the front side. The switching section  15  switches the direction of travel of the respective banknotes conveyed from below according to the conveyance destination determined by the controller  4 , and moves the banknotes to the stacking section  16  at the rear side or the reject storage box  17  at the front side. 
     The stacking section  16  is positioned at the rear side of an uppermost side inside the storage casing  10 . A stacking space  16 S in which banknotes are stacked is formed inside the stacking section  16 . The stacking section  16  includes a stage  16 T, on an upper face of which banknotes are stacked, inside the stacking space  16 S. 
     A discharge section  16 R for discharging banknotes conveyed from the switching section  15  into the stacking space  16 S is provided toward the top of the front side of the stacking section  16 . The stacking section  16  is thereby capable of stacking banknotes conveyed from the switching section  15  and discharged into the stacking space  16 S by the discharge section  16 R on the stage  16 T. Banknotes stacked on the stage  16 T in this manner are piled up in the form of a bundle. Accordingly the banknotes piled up in this manner are therefore also referred to below as a banknote bundle SB. Note that the banknote bundle SB is not wrapped with a paper band or the like, and the banknote bundle SB is simply a pile of stacked banknotes, so there is a possibility of the banknote bundle W collapsing if unintentionally applied with external force. 
     The stage  16 T can also be moved in an vertical direction by a stage moving mechanism, not illustrated in the drawings. An upper face of the stacking section  16  is provided with a stacking hole  16 H penetrating in the vertical direction over a range corresponding to the stacking space  16 S. The stacking hole  16 H also penetrates an upper face of the storage casing  10 , and places the stacking space  16 S in communication with a space further toward the upper side than the storage casing  10 . The stacking section  16  is thereby capable of lifting the stage  16 T and the stacked bundle of banknotes (banknote bundle SB) further toward the upper side than the upper face of the storage casing  10 , namely to inside the bundle conveyance unit  3 , by moving the stage  16 T upward in a state in which banknotes have been stacked on the stage  16 T. 
     The reject storage box  17  is positioned at the front side of the uppermost side inside the storage casing  10 , and forms a storage space  17 S inside which banknotes are stored. A discharge section  17 R that discharges banknotes conveyed by the switching section  15  into the storage space  17 S is provided at the rear side and toward the top of the reject storage box  17 . Accordingly, the reject storage box  17  is capable of storing banknotes (namely, reject banknotes) conveyed from the switching section  15  and discharged into the storage space  17 S by the discharge section  17 R. 
     An intake hole  17 H is provided penetrating an upper face of the reject storage box  17  in the vertical direction over a range corresponding to the storage space  17 S. The intake hole  17 H also penetrates an upper face of the storage casing  10 , thereby placing the storage space  17 S in communication with a space further to the upper side than the storage casing  10 . When a banknote has dropped down from the bundle conveyance unit  3  positioned above the reject storage box  17 , the banknote can be stored inside the storage space  17 S. 
     Similarly to the banknote storage boxes  11 , the reject storage box  17  can be detached from the storage casing  10  by being pulled out toward the front with respect to the storage casing  10 . The reject storage box  17  can also be mounted in the storage casing  10  by being positioned with respect to the storage casing  10  and being pushed toward the rear. 
     1-2. Bundle Conveyance Unit Configuration 
     The bundle conveyance unit  3  is formed overall in a flattened rectangular block shape that is short in the vertical direction and long in the front-rear direction. The front-rear direction length of the bundle conveyance unit  3  is longer than that of the storage unit  2 . The bundle conveyance unit  3  forms a bundle conveyance path  3 Y, this being a path along which a banknote bundle SB passes when conveying the banknote bundle SB, from various members incorporated inside a rectangular block shaped bundle conveyance casing  20 . A front end of the bundle conveyance casing  20 , namely a front end of the bundle conveyance path  3 Y, is formed with a pay-out port  26  that hands over the banknote bundle SB to the user. 
     Note that respective sensors for detecting a banknote bundle SB are provided at plural locations along the bundle conveyance path  3 Y, for example in the vicinity of the pay-out port  26 . The sensors are configured by combinations of light emitting elements that emit a predetermined detection light, and light receiving elements that receive the detection light. Optical paths of the detection light intersect the bundle conveyance path  3 Y, and the controller  4  is notified of light reception results for the detection light. The controller  4  is capable of determining whether or not a banknote bundle SB is present at each location along the bundle conveyance path  3 Y based on the light reception results. 
     An upper conveyor belt  21  is provided at an upper side portion inside the bundle conveyance casing  20 . The upper conveyor belt  21  is entrained around the peripheries of respective rollers disposed in the vicinity of a rear end and in the vicinity of a front end of the upper conveyor belt  21 , and when the rollers are rotated by a predetermined motor (not illustrated in the drawings) under control of the controller  4 , a lower face of the upper conveyor belt  21  travels along the front-rear direction. For ease of explanation, in the following explanation the direction of travel of the lower face portion of the upper conveyor belt  21  is taken as the direction of travel of the upper conveyor belt  21 . 
     In sequence from the rear side, a moving conveyance guide  22 , a fixed conveyance guide  23 , and a lower conveyor belt  24  are provided inside the bundle conveyance casing  20  at a portion to the lower side of the upper conveyor belt  21 , namely on the opposite side of the bundle conveyance path  3 Y to the upper conveyor belt  21 . 
     The moving conveyance guide  22  is formed in a flattened rectangular block shape or plate shape that is thin in the vertical direction. An upper face of the moving conveyance guide  22  faces or abuts a lower face of the upper conveyor belt  21 . Note that the length of the moving conveyance guide  22  in the left-right direction is longer than the length of a long edge of a banknote. The moving conveyance guide  22  can be moved in the front-rear direction with respect to the bundle conveyance casing  20  by a moving mechanism, not illustrated in the drawings. When the moving conveyance guide  22  has moved to the front, the stacking hole  16 H of the stacking section  16  is opened up, placing the stacking space  16 S in communication with the bundle conveyance path  3 Y. When the moving conveyance guide  22  has been moved to the rear, the intake hole  17 H of the reject storage box  17  is opened up, placing the stacking space  16 S in communication with the bundle conveyance path  3 Y. The fixed conveyance guide  23  is formed in a plate shape that is thin in the vertical direction, similarly to the moving conveyance guide  22 , and is fixed with respect to the bundle conveyance casing  20 . 
     The lower conveyor belt  24  has a configuration similar to that of the upper conveyor belt  21 , however, the lower conveyor belt  24  is shortened in the front-rear direction. An upper face portion of the lower conveyor belt  24  is aligned so as to be level with the upper face of the moving conveyance guide  22  and the fixed conveyance guide  23 , and faces or abuts the lower face of the upper conveyor belt  21 . Namely, the upper face of the lower conveyor belt  24  forms a lower face portion of the bundle conveyance path  3 Y together with the upper faces of the moving conveyance guide  22  and the fixed conveyance guide  23 . In the following explanation, the upper faces of the moving conveyance guide  22 , the fixed conveyance guide  23 , and the lower conveyor belt  24  are also referred to as a bundle conveyance face  3 S. Moreover, the upper face of the lower conveyor belt  24  travels in the front-rear direction, similarly to the lower face of the upper conveyor belt  21 . For ease of explanation, in the following explanation the direction of travel of the upper face portion of the lower conveyor belt  24  is taken as the direction of travel of the lower conveyor belt  24 . 
     Moreover, the stage  16 T of the stacking section  16  is moved upward in a state in which the moving conveyance guide  22  has been moved to the front ( FIG. 1 ), to align the height of the upper face of the stage  16 T so as to be substantially level with the bundle conveyance face  3 S. The stage  16 T accordingly forms part of the bundle conveyance path  3 Y. 
     In addition to the above configuration, a Scott-Russell mechanism  28  is provided inside the bundle conveyance unit  3 . The Scott-Russell mechanism  28  moves a banknote bundle SB in the front-rear direction along the bundle conveyance face  3 S, namely along the upper faces of the moving conveyance guide  22 , the fixed conveyance guide  23 , the lower conveyor belt  24 , and the stage  16 T. As illustrated in side view in  FIG. 2A , and as illustrated in  FIG. 2B , this being a cross-section taken along line Al-A 2 , the Scott-Russell mechanism  28  is configured by a Scott-Russell section  30  that abuts the banknote bundle SB and moves the banknote bundle SB in the front-rear direction, and a moving section  50  that moves the Scott-Russell section  30 . Note that in  FIG. 2A  and  FIG. 2B , the upper conveyor belt  21  and the lower conveyor belt  24  are illustrated by dashed lines, or with some components see-through, for ease of illustration. 
     1-2-1. Moving Section Configuration 
     As illustrated in exploded perspective view in  FIG. 3 , the moving section  50  is configured by a left guide plate  51 , a right guide plate  52 , a slide shaft  53 , and a drive belt section  54  ( FIG. 2 ), as well as by a motor, gears, and the like, not illustrated in the drawings. The left guide plate  51  is formed in a plate shape that is thin in the left-right direction and long in the front-rear direction, and is fixed to the bundle conveyance casing  20  ( FIG. 1 ) at a position in the vicinity of left edges of the moving conveyance guide  22 , the fixed conveyance guide  23 , and the like. A rail  56  extends out perpendicularly toward the right from an upper edge of the left guide plate  51 . The rail  56  is formed in a straight line shape running along the front-rear direction, and has a short length in the left-right direction. 
     The left guide plate  51  is also provided with a slide groove  57  penetrating the left guide plate  51  in the left-right direction. As illustrated in  FIG. 2A , the slide groove  57  is formed long and thin, and runs in the front-rear direction overall. The slide groove  57  has a substantially uniform length in the vertical direction, namely a substantially uniform groove width; however, the slide groove  57  is bent upward at a portion in the vicinity of a front end, thereby dividing the slide groove  57  into three regions of a movement region  57 A, an inclined region  57 B, and a separation region  57 C. 
     The movement region  57 A is formed in a straight line shape along the front-rear direction, and maintains a substantially uniform height from the bundle conveyance face  3 S over its entire range. The separation region  57 C is at a greater distance from the bundle conveyance face  3 S, namely is disposed at a higher location than the movement region  57 A, and has a shorter length in the front-rear direction than the movement region  57 A. The inclined region  57 B links a front end of the movement region  57 A to a rear end of the separation region  57 C, and is inclined so as to be higher at its front end and lower at its rear end. 
     The right guide plate  52  is formed in a plate shape that, similarly to the left guide plate  51 , is thin in the left-right direction and long in the front-rear direction, and is fixed to the bundle conveyance casing  20  ( FIG. 1 ) at a position in the vicinity of right edges of the moving conveyance guide  22 , the fixed conveyance guide  23 , and the like. The right guide plate  52  is formed substantially left-right symmetrical to the left guide plate  51 , and is formed including a slide groove  57  and lacking the rail  56 . The slide shaft  53  is formed in a long, thin, circular column shape with its center axis running in the front-rear direction, and is fixed to the bundle conveyance casing  20  ( FIG. 1 ) at a position slightly to the right side of an upper edge of the right guide plate  52 . 
     The drive belt section  54  ( FIGS. 2 ) is positioned at the right side of the right guide plate  52  and below the slide shaft  53 . The drive belt section  54  is configured by two pulleys  54 P and  54 Q respectively disposed in the vicinity of a front end and in the vicinity of a rear end inside the bundle conveyance casing  20 , and a belt  54 B entrained around the periphery of the pulleys  54 P and  54 Q. Drive force from a motor, not illustrated in the drawings, is transmitted to the pulley  54 Q on the rear side through gears and the like, not illustrated in the drawings. Rotation and stopping, as well as the rotation speed, rotation direction, and the like of the motor are controlled under the control of the controller  4 . The drive belt section  54  can therefore be run such that an upper side portion of the belt  54 B runs toward the front, as a first direction, or toward the rear, as a second direction, by rotating the pulley  54 Q in the clockwise direction or the counterclockwise direction in the drawings under the control of the controller  4 . 
     1-2-2. Scott-Russell Section Configuration 
     The Scott-Russell section  30  ( FIG. 3 ) is configured by a Scott-Russell body  31  that applies a pushing force to the banknote bundle SB, and a support body  41  that is positioned above the bundle conveyance path  3 Y and that supports the Scott-Russell body  31 . 
     The Scott-Russell body  31  is configured around a Scott-Russell plate  32 . The Scott-Russell plate  32  is configured in a plate shape that is long in the left-right direction and thin in the front-rear direction, and is formed with a flat front face  32 F and a flat rear face  32 R. As illustrated in  FIG. 2B , the length of the Scott-Russell plate  32  in the left-right direction is longer than the length of the moving conveyance guide  22  and the like in the left-right direction, and is narrow (shorter) than a separation between the left guide plate  51  and the right guide plate  52 . 
     The Scott-Russell plate  32  is formed with plural notch shapes, cut in deeply from portions of the lower edge as far as the vicinity of the center of the Scott-Russell plate  32 , in order to avoid interference between the Scott-Russell plate  32  and the upper conveyor belt  21 . The Scott-Russell plate  32  is also formed with claw-shaped portions  32 C projecting out further downwards than the lower edge of the Scott-Russell plate  32 , at two locations between notch shapes. Respective claw-guide grooves  22 D and  23 D that are long and thin in the front-rear direction are formed at locations on the upper faces of the moving conveyance guide  22  and the fixed conveyance guide  23  at locations corresponding to the claw-shaped portions  32 C. 
     A left side plate  33  and a right side plate  34  are provided perpendicularly toward the front side at both left and right ends of the Scott-Russell plate  32 . The left side plate  33  and the right side plate  34  are plate shapes that are thin in the left-right direction, and have substantially the same length as the Scott-Russell plate  32  in the vertical direction; however, the left side plate  33  and the right side plate  34  have a very short length in the front-rear direction. A small circular column shaped swing shaft  35  projects out toward the left from a location toward the top of an outside face, namely a left side face, of the left side plate  33 . Moreover, a post  36  that has a small circular column shape similar to the swing shaft  35  projects out toward the left below the swing shaft  35 . The diameter of the post  36  is slightly smaller than the groove width of the slide groove  57  formed to the left guide plate  51 . A swing shaft  35  and a post  36  also project out from a right side face of the right side plate  34  so as to be substantially left-right symmetrical to the left side face of the left side plate  33 . 
     The support body  41  ( FIG. 3 ) is configured around a base  42 . The base  42  is formed in a plate shape that is long in the left-right direction and short in the vertical direction. Note that the base  42  is formed longer than the Scott-Russell plate  32  in the left-right direction. Swing support plates  43  project downward from the vicinity of a left end and from the vicinity of a right end of a lower face of the base  42 . 
     The swing support plates  43  are formed in small plate shapes that are thin in the left-right direction and comparatively short in the front-rear direction and the vertical direction. The separation between the left and right swing support plates  43  is slightly greater than the length of the Scott-Russell plate  32  of the Scott-Russell body  31  in the left-right direction. Shaft holes  43 H, configured as circular holes, are formed penetrating the swing support plates  43  in the left-right direction. The diameter of the shaft holes  43 H is slightly larger than the diameter of the swing shafts  35  respectively provided to the left side plate  33  and the right side plate  34  of the Scott-Russell body  31 . 
     In the Scott-Russell section  30 , during assembly of the Scott-Russell body  31  to the support body  41 , the left and right swing shafts  35  are inserted through the left and right shaft holes  43 H respectively. The Scott-Russell body  31  is thereby capable of swinging about the swing shafts  35  with respect to the support body  41 . For example, in the Scott-Russell section  30 , the front face  32 F of the Scott-Russell plate  32  is capable of facing forward, or forward and diagonally downward, by the Scott-Russell body  31  swinging. 
     A rail guide  46  is attached to the vicinity of a left end of the base  42  through an attachment member  45  attached to an upper face of the base  42 . A straight line shaped rail groove  46 D is formed running in the front-rear direction substantially at the vertical center of the left side face of the rail guide  46 . The vertical direction height, namely the groove width, of the rail groove  46 D is formed slightly larger than the vertical direction length, namely the thickness, of the rail  56  of the left guide plate  51 . 
     A slide guide  48  is also attached to the vicinity of a right end of the base  42  through an attachment member  47  attached to the upper face of the base  42 . A shaft hole  48 H, configured by a circular hole, is formed penetrating the slide guide  48  in the front-rear direction. The diameter of the shaft hole  48 H is slightly larger than the diameter of the slide shaft  53 . A lower face of the slide guide  48  is fixed to an upper side portion of the belt  54 B of the drive belt section  54 . 
     According to this configuration, when assembling the support body  41  of the Scott-Russell section  30  to the bundle conveyance unit  3 , the rail  56  is sandwiched from above and below by the rail groove  46 D of the rail guide  46 , the slide shaft  53  is inserted through the shaft hole  48 H of the slide guide  48 , and the lower face of the slide guide  48  is fixed to the upper side portion of the belt  54 B of the drive belt section  54 . Moreover, in the Scott-Russell body  31  of the Scott-Russell section  30 , the left and right posts  36  are respectively inserted through the left and right slide grooves  57 . 
     In this state, the moving section  50  drives the belt  54 B of the drive belt section  54 . When this is performed, the Scott-Russell section  30  can be moved in the front-rear direction as the rail guide  46  and the slide guide  48  slide against the rail  56  and the slide shaft  53  respectively, and the left and right posts  36  slide within the left and right slide grooves  57 . 
     Note that as described above, the slide grooves  57  are divided into the three regions of the movement region  57 A, the inclined region  57 B, and the separation region  57 C that have different heights to each other in the vertical direction. Accordingly, in the Scott-Russell section  30  the Scott-Russell body  31  can be swung following the posts  36  according to the height of each region of the slide grooves  57  (described in detail later). 
     In this manner, in the bundle conveyance unit  3 , the Scott-Russell body  31  is swung according to the height of the slide grooves  57  as the moving section  50  moves the Scott-Russell section  30  in the front-rear direction along the upper faces of the moving conveyance guide  22  and the like. 
     1-3. Banknote Bundle Conveyance Operation 
     Next, explanation follows regarding a conveyance operation of the banknote bundle SB by the bundle conveyance unit  3 . Note that the forthcoming explanation anticipates a state in which during pay-out processing by the banknote pay-out device  1 , banknotes are stacked in the stacking section  16  to form a banknote bundle SB, and the banknote bundle SB is lifted into the bundle conveyance path  3 Y of the bundle conveyance unit  3  by raising the stage  16 T. In the bundle conveyance unit  3 , the Scott-Russell section  30  is moved to the rearmost position in advance, namely is moved in advance to the rear side of the banknote bundle SB. 
     First, the bundle conveyance unit  3  begins a pay-out conveyance operation under the control of the controller  4 . When this is performed, as illustrated in  FIG. 4A , the bundle conveyance unit  3  uses the moving section  50  to move the Scott-Russell section  30  toward the front, and drives the upper conveyor belt  21  and the lower conveyor belt  24  toward the front respectively. Note that in  FIG. 4A , for ease of explanation, some components such as the slide shaft  53  and the drive belt section  54  are omitted from illustration, and lines showing the external profile of the left guide plate  51  etc. are also omitted. 
     At this point, the left and right posts  36  of the Scott-Russell body  31  of the Scott-Russell section  30  are in the movement regions  57 A of the slide grooves  57  of the left guide plate  51  and the right guide plate  52 , such that the front face  32 F of the Scott-Russell plate  32  faces toward the front and a portion of the front face  32 F is in a state abutting the banknote bundle SB. In the following explanation, such an orientation in which the Scott-Russell body  31  faces the front face  32 F of the Scott-Russell plate  32  toward the front, and the Scott-Russell body  31  is capable of conveying the banknote bundle SB is referred to as the conveyance-enabled orientation. 
     Accordingly, in the bundle conveyance unit  3 , a portion of the front face  32 F of the Scott-Russell plate  32  abuts and applies a force toward the front to the rear side of the banknote bundle SB, moving the banknote bundle SB toward the front while sliding the banknote bundle SB across the upper face of the moving conveyance guide  22  and the fixed conveyance guide  23 . In the following explanation, this state, in which the banknote bundle SB is positioned at the front side of the Scott-Russell body  31  in the conveyance-enabled orientation, and the banknote bundle SB can be conveyed toward the front, is referred to as the forward conveyance state. 
     Moreover, at this time, the claw-shaped portions  32 C of the Scott-Russell plate  32  move toward the front in a state entering into the claw-guide grooves  22 D of the moving conveyance guide  22  or the claw-guide grooves  23 D of the fixed conveyance guide  23 . Accordingly, the bundle conveyance unit  3  is capable of abutting the long edge positioned on the rear side of all of the banknotes contained in the banknote bundle SB, from an uppermost face to a lowermost face, with the front face  32 F of the Scott-Russell plate  32 , and applying force toward the front. This thereby enables the bundle conveyance unit  3  to move the banknote bundle SB stably along the bundle conveyance path  3 Y toward the front, maintaining the banknote bundle SB in a stacked state without the banknote bundle SB collapsing. 
     As illustrated in  FIG. 4B , when the vicinity of a leading edge of the banknote bundle SB has finally reached the upper face of the lower conveyor belt  24  in the bundle conveyance unit  3 , the banknote bundle SB enters a state sandwiched between the lower face of the upper conveyor belt  21  and the upper face of the lower conveyor belt  24 . When this occurs, the bundle conveyance unit  3  pauses movement of the Scott-Russell section  30  toward the front by the moving section  50 . The banknote bundle SB is thereby separated from the Scott-Russell plate  32  of the Scott-Russell section  30 , and is moved toward the front while remaining in the state sandwiched from above and below by the upper conveyor belt  21  and the lower conveyor belt  24  that are traveling toward the front. 
     The arrival of the banknote bundle SB at the pay-out port  26  is then detected by sensors, not illustrated in the drawings, and the bundle conveyance unit  3  stops the upper conveyor belt  21  and the lower conveyor belt  24  under the control of the controller  4 . Accordingly, as illustrated in  FIG. 4C , the bundle conveyance unit  3  grips the rear side of the banknote bundle SB between the upper conveyor belt  21  and the lower conveyor belt  24 , and prompts the user to take the banknote bundle SB in a state in which the front side of the banknote bundle SB is exposed in the pay-out port  26 . 
     Moreover, the bundle conveyance unit  3  uses the moving section  50  to recommence movement of the Scott-Russell section  30  toward the front. When this is performed, the support body  41  of the Scott-Russell section  30  moves toward the front along the slide shaft  53  and the rail  56  without any change in height. However, since the posts  36  of the Scott-Russell body  31  arrive at the inclined regions  57 B of the slide grooves  57 , the posts  36  gradually ascend along the inclined regions  57 B, accompanying which the front face  32 F of the Scott-Russell plate  32  gradually faces downward, namely swings in the clockwise direction in the drawings. 
     When the posts  36  finally arrive at the separation regions  57 C of the slide grooves  57 , the bundle conveyance unit  3  stops the movement of the Scott-Russell section  30  by the moving section  50 . When this is performed, as illustrated in  FIG. 4C , the Scott-Russell plate  32  is lifted further toward the upper side than the lower face of the upper conveyor belt  21 , namely to the upper side of the bundle conveyance path  3 Y, to adopt a completely retracted state with respect to the bundle conveyance path  3 Y. In the following explanation, this orientation in which the front face  32 F of the Scott-Russell plate  32  faces diagonally downward toward the front and the Scott-Russell body  31  is completely retracted from the bundle conveyance path  3 Y is referred to as the retracted orientation. In other words, the inclined region  57 B and the separation region  57 C are regions for causing the Scott-Russell body  31  to transition to the retracted state. The inclined region  57 B and the separation region  57 C are therefore referred to collectively as the retraction region below. The pay-out conveyance operation is complete when the Scott-Russell body  31  of the bundle conveyance unit  3  has finished its transition to the retracted orientation. 
     Note that when a user forgets to take the banknote bundle SB, the banknote pay-out device  1  performs a take-in conveyance operation to take the banknote bundle SB back in. Specifically, the controller  4  uses a sensor  27  and the like to monitor whether or not the banknote bundle SB has been taken out in a state in which the front side of the banknote bundle SB is exposed in the pay-out port  26  as illustrated in  FIG. 4C . If the controller  4  detects that the banknote bundle SB has not been taken out within a predetermined time (for example one minute), the banknote bundle SB take-in conveyance operation is initiated. 
     Specifically, first, the bundle conveyance unit  3  moves the moving conveyance guide  22  toward the rear under the control of the controller  4 , such that as illustrated in  FIG. 5A , the intake hole  17 H of the reject storage box  17  is placed in communication with the bundle conveyance path  3 Y. Next, the bundle conveyance unit  3  drives the upper conveyor belt  21  and the lower conveyor belt  24  toward the rear respectively, moving the banknote bundle SB toward the rear, with the Scott-Russell section  30  remaining stationary, namely, with the Scott-Russell body  31  still in the retracted orientation. The banknote bundle SB thereby passes the lower side of the Scott-Russell plate  32  of the Scott-Russell body  31  that is in the retracted orientation, and reaches a position further to the rear side than the Scott-Russell plate  32 . 
     When the bundle conveyance unit  3  detects the arrival of the front end of the banknote bundle SB in the vicinity of a rear end of the upper face of the lower conveyor belt  24  using sensors, not illustrated in the drawings, the bundle conveyance unit  3  pauses the upper conveyor belt  21  and the lower conveyor belt  24 , such that the banknote bundle SB becomes stationary. 
     Next, the bundle conveyance unit  3  uses the moving section  50  to move the Scott-Russell section  30  toward the rear, such that the posts  36  are moved toward the rear along the slide grooves  57 , and from the separation regions  57 C, the posts  36  arrive in the vicinity of the front end of the movement regions  57 A via the inclined regions  57 B, as illustrated in  FIG. 5B . When this is performed, the Scott-Russell body  31  of the Scott-Russell section  30  swings gradually from the retracted orientation in the counterclockwise direction in the drawings, ultimately reaching the conveyance-enabled orientation, namely the orientation in which the front face  32 F of the Scott-Russell plate  32  faces toward the front. 
     The bundle conveyance unit  3  then moves the upper conveyor belt  21  toward the rear, and moves the Scott-Russell section  30  toward the rear using the moving section  50 , such that as illustrated in  FIG. 5C , the rear face  32 R of the Scott-Russell plate  32  abuts the front end of the banknote bundle SB and applies the banknote bundle SB with a force toward the rear, thereby moving the banknote bundle SB toward the rear. 
     When this is performed, the claw-shaped portions  32 C of the Scott-Russell plate  32  move toward the rear in a state in which the claw-shaped portions  32 C have entered into the claw-guide grooves  23 D of the fixed conveyance guide  23 , similarly to as illustrated in  FIG. 4A , but with the front and rear reversed. The bundle conveyance unit  3  is thereby capable of abutting the long edge positioned on the front side of all of the banknotes contained in the banknote bundle SB, from the uppermost face to the lowermost face, with the rear face  32 R and the Scott-Russell plate  32 , and applying force toward the rear. The bundle conveyance unit  3  is thereby capable of moving the banknote bundle SB stably along the bundle conveyance path  3 Y toward the rear, maintaining the banknote bundle SB in a stacked state without the banknote bundle SB collapsing. In the following explanation, such a state in which the banknote bundle SB is positioned at the rear side of the Scott-Russell body  31  in the conveyance-enabled orientation and the banknote bundle SB can be conveyed toward the rear is referred to as the rearward conveyance state. 
     When the bundle conveyance unit  3  finally brings the banknote bundle SB as far as the rear end of the fixed conveyance guide  23 , the banknote bundle SB is caused to fall into the intake hole  17 H, to be stored inside the reject storage box  17 . The bundle conveyance unit  3  then moves the Scott-Russell section  30  to the rearmost position so as to be prepared for the next pay-out conveyance operation, and the take-in conveyance operation is ended. 
     Note that if the banknote bundle SB is taken by the user in the state illustrated in  FIG. 4C , the bundle conveyance unit  3  moves the Scott-Russell section  30  toward the rear side so as to cause the Scott-Russell body  31  to transition from the retracted orientation to the conveyance-enabled orientation, and moreover positions the Scott-Russell section  30  at the rearmost position of the bundle conveyance path  3 Y, thereby preparing for the next pay-out conveyance operation. 
     In the above configuration, in the bundle conveyance unit  3  of the banknote pay-out device  1  according to the first exemplary embodiment, the slide grooves  57  are provided to the left guide plate  51  and the right guide plate  52  so as to have a different height from the bundle conveyance face  3 S in each region, and the posts  36  of the Scott-Russell body  31  are inserted through the slide grooves  57 . Accordingly, by using the moving section  50  to move the Scott-Russell section  30  in the front-rear direction, the bundle conveyance unit  3  is capable of causing the Scott-Russell body  31  to adopt the conveyance-enabled orientation in the movement region  57 A, and to transition to the retracted orientation in the separation region  57 C. 
     In the bundle conveyance unit  3 , when the Scott-Russell body  31  is in the conveyance-enabled orientation, the banknote bundle SB can be conveyed by moving the Scott-Russell section  30  toward the front or toward the rear along the bundle conveyance path  3 Y in a state in which part of the front face  32 F or the rear face  32 R of the Scott-Russell plate  32  abuts the banknote bundle SB. Moreover in the bundle conveyance unit  3 , when the Scott-Russell plate  32  is in the retracted orientation, the banknote bundle SB can be moved toward the front side or the rear side of the Scott-Russell plate  32  by moving the banknote bundle SB toward the front or toward the rear in a state gripped from above and below by the upper conveyor belt  21  and the lower conveyor belt  24 . 
     Namely, the bundle conveyance unit  3  is capable of switching the direction of progress of the banknote bundle SB, namely the conveyance direction, toward the front or toward the rear by causing the Scott-Russell body  31  to transition to the conveyance-enabled orientation or the retracted orientation, without providing a motive power source such as a motor to the Scott-Russell section  30  moving toward the front and rear. 
     Accordingly in the bundle conveyance unit  3 , the weight of the Scott-Russell section  30  can be suppressed in comparison to cases in which a motive power source such as a motor is incorporated in the moving Scott-Russell section  30 . Moreover, there is no need to increase the rigidity of the respective sections configuring the moving section  50  of the bundle conveyance unit  3 , and drive can be performed with a compact motor of comparatively small output, enabling the overall configuration to be simplified. This enables a contribution to be made to reducing the size and reducing the power consumption of the banknote pay-out device  1 . 
     In the bundle conveyance unit  3 , the banknote bundle SB can be conveyed while being caused by the moving Scott-Russell section  30  to slide over the upper face of the fixed conveyance guide  23  and the like. There is therefore no need for the stage  16 T, the moving conveyance guide  22 , or the fixed conveyance guide  23  to be incorporated with mechanisms such as belts to move the banknote bundle SB. This thereby enables a more lightweight configuration of the bundle conveyance unit  3  due to configuring the moving stage  16 T and moving conveyance guide  22  from simple plate shaped members, thus enabling a reduction in size of the motors and the like for moving the stage  16 T and the moving conveyance guide  22 , and enabling a simpler device configuration. 
     Moreover, in the Scott-Russell section  30 , the support body  41  is only moved in the front-rear direction along the slide shaft  53  and the rail  56 , and so the height, namely the distance of the shaft holes  43 H from the bundle conveyance face  3 S can be kept uniform at all times. Accordingly, in the Scott-Russell body  31 , inserting the swing shafts  35  through the respective shaft holes  43 H and inserting the posts  36  through the slide grooves  57  enables the swing angle about the swing shafts  35  to be determined solely by the height of the slide grooves  57 . 
     The slide groove  57  has a substantially uniform height from the bundle conveyance face  3 S in the movement region  57 A. Accordingly, the Scott-Russell body  31  can be maintained in the conveyance-enabled orientation while the posts  36  of the Scott-Russell section  30  are in the movement region  57 A, enabling the front face  32 F of the Scott-Russell plate  32  to always face toward the front, and for the rear side of the banknote bundle SB to always be abutted by the substantially vertical face. This thereby enables the Scott-Russell section  30  to apply a stable force to the banknote bundle SB from the Scott-Russell plate  32  during conveyance, enabling the banknote bundle SB to be moved in the stacked state without collapsing. 
     Moreover, in the bundle conveyance unit  3 , the claw-shaped portions  32 C that project further downward than their surroundings are formed at the lower edge of the Scott-Russell plate  32 , and the claw-guide grooves  22 D and  23 D are respectively formed in the upper faces of the moving conveyance guide  22  and the fixed conveyance guide  23 , such that the claw-shaped portions  32 C enter the claw-guide grooves  22 D and  23 D when the posts  36  move in the movement regions  57 A. This thereby enables the claw-shaped portions  32 C to be positioned further toward the lower side than the lowermost face of the banknote bundle SB in the bundle conveyance unit  3 , such that all of the banknotes contained in the banknote bundle SB, from the uppermost face to the lowermost face thereof, are conveyed toward the front or toward the rear without any banknotes being left behind. 
     Moreover, in the bundle conveyance unit  3 , the upper conveyor belt  21  is provided at the upper side of the bundle conveyance path  3 Y over substantially the entire range of the bundle conveyance path  3 Y. Accordingly, in the bundle conveyance unit  3 , the upper face of the banknote bundle SB, made up of stacked paper sheet shaped banknotes that are not bound together, can be moved while being pressed toward the bundle conveyance face  3 S by the lower face of the upper conveyor belt  21 , thereby enabling collapse of the banknote bundle SB during conveyance to be forestalled. 
     According to the above configuration, the bundle conveyance unit  3  of the banknote pay-out device  1  of the first exemplary embodiment moves the Scott-Russell section  30  toward the front or toward the rear while moving the posts  36  along the slide grooves  57 . When this is performed, the bundle conveyance unit  3  conveys the banknote bundle SB along the bundle conveyance path  3 Y toward the front, after which the Scott-Russell body  31  is caused to transition from the conveyance-enabled orientation to the retracted orientation, and the banknote bundle SB is conveyed toward the rear by the lower conveyor belt  24  and the like before returning the Scott-Russell body  31  to the conveyance-enabled orientation to switch from a forward conveyance state to a rearward conveyance state, enabling the banknote bundle SB to be conveyed toward the rear along the bundle conveyance path  3 Y. The bundle conveyance unit  3  is accordingly capable of switching the banknote bundle SB conveyance direction from a forward direction to a rearward direction without providing a motive power source to the Scott-Russell section  30 , which moves in the front-rear direction. 
     2. Second Exemplary Embodiment 
     In a second exemplary embodiment, the banknote bundle SB is conveyed in the front-rear direction along a bundle conveyance path  103 Y by a bundle conveyance unit  103  illustrated in  FIG. 6A  instead of by the bundle conveyance unit  3  of the first exemplary embodiment. The bundle conveyance unit  103  differs from the bundle conveyance unit  3  in the point that it is provided with a Scott-Russell mechanism  128  instead of the Scott-Russell mechanism  28 . The Scott-Russell mechanism  128  is configured by a Scott-Russell section  130  and a moving section  150  instead of the Scott-Russell section  30  and the moving section  50  of the first exemplary embodiment. 
     2-1. Scott-Russell Section and Moving Section Configuration 
     The Scott-Russell section  130  includes a support body  41  similar to that of the first exemplary embodiment, and a Scott-Russell body  131  having a configuration that differs partly from that of the Scott-Russell body  31 . The Scott-Russell body  131  differs from the Scott-Russell body  31  of the first exemplary embodiment in the point that it includes a left side plate  133  and a right side plate  134  instead of the left side plate  33  and the right side plate  34 . The Scott-Russell body  131  includes a Scott-Russell plate  32 , swing shafts  35 , and posts  36  that are each configured similarly to the Scott-Russell body  31  of the first exemplary embodiment. 
     The left side plate  133  has a plate shape that is thin in the left-right direction, similarly to the left side plate  33 ; however, the left side plate  133  has a different shape to that of the left side plate  33 . Specifically, as viewed from the left, the left side plate  133  has a triangular or trapezoidal shape including a front edge that is inclined overall, and a lower side that projects out toward the front. The vicinity of an upper end of a rear edge of the left side plate  133  is connected to a semicircle. The center of this semicircular portion is positioned substantially directly above the Scott-Russell plate  32 . 
     Above the left side plate  133 , the swing shaft  35  projects out toward the left from the vicinity of the center of the semicircular portion. Namely, a point Q 1  representing the center axis of the swing shaft  35  is positioned substantially directly above the Scott-Russell plate  32 . The post  36  projects out toward the left from a location at the lower side of, and toward the front of, the swing shaft  35 . Namely, the post  36  and a point Q 2  representing the center of the post  36  are positioned at the front of and below the swing shaft  35 , and are positioned at the front side of the Scott-Russell plate  32 . 
     The moving section  150  includes a left guide plate  151  and a right guide plate  152  instead of the left guide plate  51  and the right guide plate  52  of the first exemplary embodiment. The left guide plate  151  and the right guide plate  152  are configured similarly overall to the left guide plate  51  and the right guide plate  52 ; however, each includes a slide groove  157  instead of the slide groove  57 . 
     Although the slide groove  157  resembles the slide groove  57  of the first exemplary embodiment overall, the slide groove  157  is formed with a partially different profile. Specifically, the slide groove  157  includes a movement region  157 A, an inclined region  157 D, and a separation region  157 E, respectively corresponding to the movement region  57 A, the inclined region  57 B, and the separation region  57 C, and also includes a lowering region  157 B and a pull-back region  157 C formed between the movement region  157 A and the inclined region  157 D. Note that in the present exemplary embodiment, the lowering region  157 B, the pull-back region  157 C, the inclined region  157 D, and the separation region  157 E are collectively referred to as a retraction region. 
     The lowering region  157 B is inclined diagonally downward toward the front from a front end of the movement region  157 A, and has an incline direction opposite to that of the inclined region  157 D in the vertical direction. The length of the lowering region  157 B in the vertical direction is sufficiently shorter than that of the inclined region  157 D. 
     The pull-back region  157 C is formed in a straight line shape running along the front-rear direction, similarly to the movement region  157 A and the separation region  157 E. A front end of the pull-back region  157 C is connected to a front lower end of the lowering region  157 B, and is therefore positioned further toward the lower side than the movement region  157 A. In other words, as viewed along the left-right direction, the pull-back region  157 C is lowered so as to form a step with respect to the movement region  157 A. 
     As illustrated in  FIG. 6A , in the Scott-Russell mechanism  128 , similarly to in the first exemplary embodiment, the posts  36  are inserted through the slide grooves  157  by assembling the Scott-Russell section  130  and the moving section  150  together. Also similarly to in the first exemplary embodiment, the support body  41  of the Scott-Russell section  130  moves toward the front along the slide shaft  53  and the rail  56  ( FIGS. 2  and  FIG. 3 ) without changing in height. When this is performed, the swing shafts  35  that are swingably supported by the swing support plates  43  only move in the front-rear direction, and do not move in the vertical direction. 
     Note that as illustrated in  FIG. 6A , length L 1  is shorter than length L 2 , wherein length L 1  is the distance between the center points Q 1  and Q 2  in the vertical direction, and length L 2  is the absolute distance between the center points Q 1  and Q 2 . 
     2-2. Banknote Bundle Conveyance Operation 
     Next, explanation follows regarding a conveyance operation of the banknote bundle SB by the bundle conveyance unit  103 . As illustrated in  FIG. 6A , in a pay-out conveyance operation, the bundle conveyance unit  103  uses the moving section  150  to move the Scott-Russell section  130  toward the front in a state in which the banknote bundle SB has been placed on the fixed conveyance guide  23 . 
     When this is performed, the left and right posts  36  of the Scott-Russell body  131  of the Scott-Russell section  130  are in the movement regions  157 A of the slide grooves  157 , to adopt a state in which the front face  32 F of the Scott-Russell plate  32  faces toward the front, and a portion of the front face  32 F abuts the banknote bundle SB, similarly to in the first exemplary embodiment. In the present exemplary embodiment, such an orientation in which the front face  32 F of the Scott-Russell plate  32  faces toward the front and the Scott-Russell body  131  is capable of conveying the banknote bundle SB is referred to hereafter as the conveyance-enabled orientation. Moreover, in the present exemplary embodiment, a state in which the Scott-Russell body  131  is in the conveyance-enabled orientation, and the Scott-Russell plate  32  is positioned at the rear side of the banknote bundle SB and is capable of conveying the banknote bundle SB toward the front is referred to as the forward conveyance state. 
     As illustrated in  FIG. 7A , in the bundle conveyance unit  103 , when the vicinity of the leading end of the banknote bundle SB finally reaches the upper face of the lower conveyor belt  24 , similarly to as illustrated in  FIG. 4B , the banknote bundle SB enters a state sandwiched from above and below by the lower face of the upper conveyor belt  21  and the upper face of the lower conveyor belt  24 . The bundle conveyance unit  103  then pauses the movement of the Scott-Russell section  130  toward the front by the moving section  150 , and as illustrated in  FIG. 7B , with the banknote bundle SB gripped from above and below by the upper conveyor belt  21  and the lower conveyor belt  24 , conveys the banknote bundle SB forward to the pay-out port  26  to be taken by the user. 
     The bundle conveyance unit  103  then recommences movement of the Scott-Russell section  130  toward the front by the moving section  150 . When this is performed, in the Scott-Russell section  130 , while maintaining the height of the swing shafts  35 , the posts  36  reach the lowering regions  157 B from the movement regions  157 A of the slide grooves  157 , and then the posts  36  are lowered along the lowering regions  157 B, and finally reach the pull-back regions  157 C. 
     When this is performed, the posts  36  are displaced further downward, namely toward a direction to pull back from the swing shaft  35 , in the vertical direction than when the posts  36  were positioned in the movement regions  157 A ( FIG. 7A ). Accompanying the lowering of the posts  36 , the Scott-Russell body  131  swings about the swing shaft  35  such that the front face  32 F of the Scott-Russell plate  32  gradually faces downward, namely swings in the clockwise direction in the drawings. 
     The bundle conveyance unit  103  then uses the moving section  150  to move the Scott-Russell section  130  further toward the front. When this is performed, as illustrated in  FIG. 7C , the Scott-Russell body  131  first moves the posts  36  slightly toward the front along the pull-back regions  157 C of the slide grooves  157 , and then moves the posts  36  to the front end of the pull-back regions  157 C, namely a lower end of the inclined regions  157 D. The Scott-Russell body  131  then raises the posts  36  along the inclined regions  157 D, and finally, as illustrated in  FIG. 7D , the posts  36  reach the separation regions  157 E. 
     When this is performed, the Scott-Russell body  131  is swung about the swing shaft  35  in the clockwise direction in the drawings, and the lower edge of the Scott-Russell plate  32  is lifted further toward the upper side than the upper face of the banknote bundle SB so as to be pulled back from the banknote bundle. In the present exemplary embodiment, this orientation is referred to hereafter as the retracted orientation. At this point, the posts  36  and the center point Q 2  are positioned further toward the rear side than the swing shafts  35  and the center point Q 1 . 
     The bundle conveyance unit  103  ends the pay-out conveyance operation at this stage. Note that when a user forgets to take the banknote bundle SB, the bundle conveyance unit  103  commences the banknote bundle SB take-in conveyance operation. 
     Specifically, similarly to as illustrated in  FIG. 5A , the bundle conveyance unit  103  respectively drives the upper conveyor belt  21  and the lower conveyor belt  24  toward the rear, moving the banknote bundle SB toward the rear, with the Scott-Russell section  130  remaining stationary, namely, with the Scott-Russell body  131  still in the retracted orientation. The banknote bundle SB thereby passes below the Scott-Russell plate  32  of the Scott-Russell body  131  in the retracted orientation, and arrives at a position further to the rear side than the Scott-Russell plate  32 . 
     Next, the bundle conveyance unit  103  uses the moving section  150  to move the Scott-Russell section  130  toward the rear, thus moving the posts  36  toward the rear along the slide grooves  157 . When this is performed, as illustrated in  FIG. 7C ,  FIG. 7B , and  FIG. 7A , the posts  36  move in sequence from the separation regions  157 E through the inclined regions  157 D, the pull-back regions  157 C, and the lowering regions  157 B, so as to arrive in the movement regions  157 A. Accompanying this, the Scott-Russell body  131  at the front side of the banknote bundle SB swings gradually from the retracted orientation in the counterclockwise direction in the drawings, finally reaching the conveyance-enabled orientation, namely an orientation in which the front face  32 F of the Scott-Russell plate  32  faces toward the front. 
     Following this, the bundle conveyance unit  103  drives the upper conveyor belt  21  toward the rear, and uses the moving section  150  to move the Scott-Russell section  130  toward the rear. Accordingly, the rear face  32 R ( FIG. 6A ) of the Scott-Russell plate  32  abuts the front end of the banknote bundle SB and applies the banknote bundle SB with force toward the rear such that the rearward conveyance state is adopted, and the banknote bundle SB is moved toward the rear. The bundle conveyance unit  103  can accordingly make the banknote bundle SB fall through the intake hole  17 H to be stored in the reject storage box  17 , similarly to as illustrated in  FIG. 5C . 
     According to the above configuration, in the bundle conveyance unit  103  according to the second exemplary embodiment, the slide grooves  157  that are at a different height from the bundle conveyance face  3 S in each region are provided to the left guide plate  151  and the right guide plate  152 , and the posts  36  of the Scott-Russell body  131  are inserted through the slide grooves  157 . Accordingly, similarly to in the first exemplary embodiment, by using the moving section  150  to move the Scott-Russell section  130  in the front-rear direction, the bundle conveyance unit  103  is capable of causing the Scott-Russell body  131  to adopt the conveyance-enabled orientation in the movement region  157 A, and to transition to the retracted orientation in the separation region  157 E. 
     Namely, the bundle conveyance unit  103  is capable of causing the Scott-Russell body  131  to transition to the conveyance-enabled orientation or the retracted orientation by displacing the posts  36  in the vertical direction according to the profile of the slide groove  157 , without providing a motive power source to the Scott-Russell section  130 , which moves in the front-rear direction. Moreover, similarly to in the first exemplary embodiment, the bundle conveyance unit  103  is capable of switching the conveyance direction of the banknote bundle SB toward the front or toward the rear by combining a change in orientation of the Scott-Russell body  131  with the front-rear direction conveyance operation of the banknote bundle SB by the upper conveyor belt  21  and the lower conveyor belt  24 . 
     Note that in the first exemplary embodiment, when the Scott-Russell body  31  is in the conveyance-enabled orientation, the posts  36  are positioned substantially directly below the swing shafts  35 . Namely, when the Scott-Russell body  31  is in the conveyance-enabled orientation, the direction in which the posts  36  are capable of moving with respect to the swing shafts  35  is a direction tangential to an imaginary circle centered on the swing shaft  35 , namely the front-rear direction, corresponding to a direction running along the movement region  157 A. 
     Accordingly, in cases in which, for example, the posts  36  are slightly loose in the movement regions  57 A of the slide grooves  57 , the front-rear direction movement is hardly restricted by side edge portions of the slide grooves  57 , enabling movement over a comparatively long distance in the front-rear direction in the movement regions  57 A. 
     In particular, when the Scott-Russell plate  32  of the Scott-Russell body  31  is abutted against the banknote bundle SB for conveyance in the front-rear direction, there is a possibility that a reaction force in the front-rear direction from the banknote bundle SB could be received due to, for example, friction or the like between the banknote bundle SB and the fixed conveyance guide  23  and so on. In such cases, the posts  36  of the Scott-Russell body  31  could be moved significantly toward the front or rear in the movement regions  57 A by the reaction force received from the banknote bundle SB, tilting the Scott-Russell plate  32  heavily with respect to the vertical direction, to the detriment of the stacked state of the banknote bundle SB. 
     By contrast, when the Scott-Russell body  131  of the second exemplary embodiment is in the conveyance-enabled orientation, the posts  36  are positioned in front of and below the swing shafts  35 , rather than directly below the swing shafts  35 . Accordingly, in the Scott-Russell body  131 , the direction in which the posts  36  are capable of moving with respect to the swing shafts  35 , namely a direction tangential to an imaginary circle centered on the center point Q 1  and passing through the center point Q 2 , is that of the arrows T 1  and T 2  in  FIG. 6B . The direction along the arrows T 1  and T 2  intersects the front-rear direction, this being the direction of progress along the movement regions  157 A of the slide grooves  157 , so as to an angle of some degree (for example from 30° to 45°) with respect to the front-rear direction. 
     According to this configuration, the Scott-Russell body  131  moves the posts  36  in the direction along the arrows T 1  and T 2  in the movement regions  157 A even if the Scott-Russell plate  32  receives a reaction force from the banknote bundle SB, enabling the movement amount of the posts  36  in the front-rear direction to be kept small. This thereby enables the angle of inclination of the Scott-Russell body  131  away from the vertical direction to be kept small, and thus enables stable conveyance with hardly any detriment to the stacked state of the banknote bundle SB. 
     Moreover, in the Scott-Russell mechanism  128  of the bundle conveyance unit  103 , the pull-back region  157 C is provided on the slide groove  157  below the movement region  157 A ( FIG. 6A ). Accordingly, the bundle conveyance unit  103  is capable of moving the posts  36  from in front of and below the swing shafts  35  to the rear of and below the swing shafts  35 , passing directly below the swing shafts  35 , simply by moving the Scott-Russell body  131  toward the front and moving the posts  36  along the slide grooves  157 . Accompanying this, the orientation of the Scott-Russell body  131  can be changed between the conveyance-enabled orientation and the retracted orientation ( FIG. 7A  to  FIG. 7D ). 
     According to the above configuration, the bundle conveyance unit  103  of the second exemplary embodiment moves the Scott-Russell section  130  toward the front or toward the rear while moving the posts  36  along the slide grooves  157 . In the bundle conveyance unit  103  when this is performed, the banknote bundle SB is conveyed forward along the bundle conveyance path  103 Y, after which the Scott-Russell body  131  is caused to transition from the conveyance-enabled orientation to the retracted orientation, and the banknote bundle SB is then conveyed toward the rear by the lower conveyor belt  24  and the like before restoring the Scott-Russell body  131  to the conveyance-enabled orientation, thereby enabling conveyance of the banknote bundle SB along the bundle conveyance path  103 Y toward the rear. Similarly to in the first exemplary embodiment, the bundle conveyance unit  103  is accordingly capable of switching the conveyance direction of the banknote bundle SB from the forward direction to the rearward direction without providing a motive power source to the Scott-Russell section  130 , which moves in the front-rear direction. 
     3. Third Exemplary Embodiment 
     3-1. Scott-Russell Section and Moving Section Configuration 
     In a third exemplary embodiment, the banknote bundle SB is conveyed in the front-rear direction along a bundle conveyance path  203 Y by a bundle conveyance unit  203  illustrated in  FIG. 8A  and  FIG. 8B , instead of by the bundle conveyance unit  3  of the first exemplary embodiment. The bundle conveyance unit  203  differs from the bundle conveyance unit  3  in the points that the upper conveyor belt  21  and the lower conveyor belt  24  are omitted, and a fixed conveyance guide  223 , a pay-out port  226 , and a Scott-Russell mechanism  228  are provided instead of the fixed conveyance guide  23 , the pay-out port  26 , and the Scott-Russell mechanism  28 . 
     The fixed conveyance guide  223  is configured so as to extend further toward the front than the fixed conveyance guide  23 . An upper face of the fixed conveyance guide  223  is formed with claw-guide grooves  223 D. The Scott-Russell mechanism  228  is configured by a Scott-Russell section  230  and a moving section  250  instead of the Scott-Russell section  30  and the moving section  50  of the Scott-Russell mechanism  28  ( FIGS. 2  and  FIG. 3 ). 
     The Scott-Russell section  230  is configured by a Scott-Russell body  231  instead of the Scott-Russell body  31 , and by a support body  41  configured similarly to that of the first exemplary embodiment. As illustrated in  FIG. 8A  and  FIG. 8B , the Scott-Russell body  231  is configured by a Scott-Russell plate  232 , a left arm  233 , a right arm  234 , swing shafts  235 , and posts  236 . Note that the support body  41  is omitted from illustration in  FIG. 8A  and  FIG. 8B . 
     The Scott-Russell plate  232  is configured similarly to the Scott-Russell plate  32  of the first exemplary embodiment ( FIGS. 2  and  FIG. 3 ), and includes claw-shaped portions  232 C. The left arm  233  is provided instead of the left side plate  33  of the first exemplary embodiment, and is formed in a rod shape that is long in the front-rear direction and short in the vertical and left-right directions, and is provided so as to extends forward and perpendicular to a left upper edge of the Scott-Russell plate  232 . The right arm  234  is provided instead of the right side plate  34  of the first exemplary embodiment, and is configured with left-right symmetry to the left arm  233 . 
     The swing shafts  235  have the same shape as the swing shafts  35  of the first exemplary embodiment, and extend outward toward the left and right from the vicinity of front ends of the left arm  233  and the right arm  234  respectively. The swing shafts  235  are swingably supported by the support body  41  ( FIGS. 2 , etc.). The posts  236  have the same shape as the posts  36  of the first exemplary embodiment, and extend outward toward the left and right from the vicinity of lower ends of both left and right edges of the Scott-Russell plate  232 . 
     The moving section  250  differs from the moving section  50  of the first exemplary embodiment ( FIGS. 2 ,  FIG. 3 , etc.) in the point that it includes a left guide plate  251  and a right guide plate  252  instead of the left guide plate  51  and the right guide plate  52 . The moving section  250  is similar to the moving section  50  in other respects. 
     As illustrated in  FIG. 9A , the left guide plate  251  includes a switch  258  in addition to a slide groove  257  provided instead of the slide groove  57 . The left guide plate  251  also includes a rail  56  ( FIG. 3 , etc.) similar to that of the first exemplary embodiment. The slide groove  257  is broadly divided into five regions of a movement region  257 A, an inclined region  257 B, a separation region  257 C, a lowering region  257 D, and a retracted region  257 E. 
     The movement region  257 A and the inclined region  257 B are configured similarly to the movement region  57 A and the inclined region  57 B of the first exemplary embodiment, respectively. However, the movement region  257 A is disposed slightly lower than a bundle conveyance face  203 S, this being an upper face of the fixed conveyance guide  223 . The separation region  257 C corresponds to the separation region  57 C of the first exemplary embodiment, and the front-rear direction length of the separation region  257 C is longer than the front-rear direction length of the banknote bundle SB. 
     The lowering region  257 D is formed from a front end of the separation region  257 C downward as far as a height equivalent to that of the movement region  257 A. The retracted region  257 E advances from a lower end of the lowering region  257 D toward the rear, and is connected to a location where the movement region  257 A and the inclined region  257 B are connected together, forming a three-way junction with the movement region  257 A and the inclined region  257 B. In other words, the retracted region  257 E is configured so as to resemble an extension of the movement region  257 A toward the front. 
     The slide groove  257  is thus formed with a quadrilateral shaped circuit path, by the inclined region  257 B, the separation region  257 C, the lowering region  257 D, and the retracted region  257 E, which is connected to a front end of the movement region  257 A. 
     The switch  258  is formed in a triangular shape as viewed from along the left-right direction, and is attached to the left guide plate  251  through a swing shaft  258 X, so as to be capable of swinging. The switch  258  is biased in the arrow R 1  direction (namely, in the clockwise direction in the drawings) by a spring, not illustrated in the drawings. The range in which the switch  258  is capable of swinging is restricted by a stopper, not illustrated in the drawings. 
     Accordingly, in a state in which the switch  258  is not applied with external force, as illustrated in  FIG. 9A , a tip  258 P of the switch  258  faces upward, and a bottom edge of the movement region  257 A is connected to a front edge of the inclined region  257 B by a rear edge  258 R of the switch  258  (this is referred to below as the incline guidance mode). At this point, the retracted region  257 E is blocked off from the movement region  257 A by the switch  258 . 
     Moreover, when an external force in the direction of arrow R 2  (namely, counterclockwise in the drawings) is temporarily applied to a front edge  258 F of the switch  258 , for example, the switch  258  swings such that the tip  258 P is pushed over to the rear and downward as illustrated in  FIG. 9B , and substantially the entire switch  258 , including the tip  258 P, is pulled back flush with or lower than the lower edge of the movement region  257 A, thus connecting the retracted region  257 E and movement region  257 A together (this is referred to below as the horizontal guidance mode). The switch  258  then returns from the incline guidance mode ( FIG. 9A ) to the horizontal guidance mode under the action of the spring when the application of the external force is released. 
     The right guide plate  252  includes the slide groove  257  and switch  258 , similarly to the left guide plate  251 . 
     3-2. Banknote Bundle Conveyance Operation 
     Next, explanation follows regarding a conveyance operation of the banknote bundle SB by the bundle conveyance unit  203 . As illustrated in  FIGS. 8 , in a pay-out conveyance operation the bundle conveyance unit  203  uses the moving section  250  to move the Scott-Russell section  230  toward the front in a state in which the banknote bundle SB has been placed on the fixed conveyance guide  223 . 
     When this is performed, the left and right posts  236  of the Scott-Russell body  231  of the Scott-Russell section  230  are in the movement regions  257 A of the slide grooves  257 , and a state is adopted in which a front face  232 F of the Scott-Russell plate  232  faces toward the front, and a portion of the front face  232 F abuts the banknote bundle SB, similarly to in the first exemplary embodiment. In the present exemplary embodiment, such an orientation in which the front face  232 F of the Scott-Russell plate  232  faces toward the front and the Scott-Russell body  231  is capable of conveying the banknote bundle SB is referred to hereafter as the conveyance-enabled orientation. Moreover, in the present exemplary embodiment, a state in which the Scott-Russell body  231  is in the conveyance-enabled orientation, and the Scott-Russell plate  232  is positioned at the rear side of the banknote bundle SB and is capable of conveying the banknote bundle SB toward the front is referred to as the forward conveyance state. 
     As illustrated in  FIG. 10A , corresponding to  FIG. 8A  and  FIG. 9A , in the bundle conveyance unit  203 , the posts  236  reach the front end of the movement regions  257 A and the posts  236  abut the rear edges  258 R of the switches  258  that are in the incline guidance mode. Note that the upper part of  FIG. 10A  illustrates the Scott-Russell body  231 , and the lower part of  FIG. 10A  illustrates part of the left guide plate  251 . At this point, although the rear edges  258 R of the switches  258  are being applied with force toward the front by the posts  236 , the switches  258  are restricted from swinging by stoppers, not illustrated in the drawings, such that the incline guidance mode is maintained. 
     The bundle conveyance unit  203  ends the pay-out conveyance operation at this stage, and the banknote bundle SB placed on the fixed conveyance guide  223  in the pay-out port  226  can be taken by the user. Note that when a user forgets to take the banknote bundle SB, the bundle conveyance unit  203  commences the banknote bundle SB take-in conveyance operation. 
     First, the bundle conveyance unit  203  uses the moving section  250  to move the Scott-Russell section  230  toward the front. The posts  236  are thereby guided into the inclined regions  257 B whilst sliding against the rear edges  258 R of the switches  258  that are in the incline guidance mode. The posts  236  move diagonally upward and toward the front along the inclined regions  257 B, and reach the front end of the separation regions  257 C, as illustrated in  FIG. 10B . At this point, the Scott-Russell body  231  swings about the swing shafts  235  in the clockwise direction in the drawings, and the lower edge of the Scott-Russell plate  232  is lifted further toward the upper side than the upper face of the banknote bundle SB so as to be pulled back from the banknote bundle SB. In the present exemplary embodiment, this orientation is referred to below as the retracted orientation. 
     The bundle conveyance unit  203  then uses the moving section  250  to move the Scott-Russell section  230  further toward the front. Accordingly, the posts  236  move along the separation regions  257 C toward the front, while maintaining the retracted orientation, and reach the front end of the separation regions  257 C, namely the upper end of the lowering regions  257 D, as illustrated in  FIG. 10C . At this point, the posts  236 , together with the lower edge portion of the Scott-Russell plate  232 , reach further to the front side than the banknote bundle SB that is stationary on the fixed conveyance guide  223 . 
     Next, the bundle conveyance unit  203  uses the moving section  250  to move the Scott-Russell section  230  slightly toward the rear. Accordingly, the posts  236  move downward along the lowering regions  257 D, and reach the lower end of the lowering regions  257 D, namely the front end of the retracted regions  257 E, as illustrated in  FIG. 11A . At this point, the posts  236 , together with the lower edge portion of the Scott-Russell plate  232 , are positioned at a height slightly lower than the upper face of the fixed conveyance guide  223 . Accordingly, the Scott-Russell body  231  returns to an orientation in which a rear face  232 R of the Scott-Russell plate  232  faces toward the rear, namely the conveyance-enabled orientation, and the rear face  232 R faces the front side face of the banknote bundle SB. In the present exemplary embodiment, this state in which the Scott-Russell body  231  is in the conveyance-enabled orientation and Scott-Russell plate  232  is positioned at the front side of the banknote bundle SB and is capable of conveying the banknote bundle SB toward the rear is referred to below as the rearward conveyance state. 
     From another perspective, the inclined regions  257 B, the separation regions  257 C, and the lowering regions  257 D of the slide grooves  257  configure regions for causing the Scott-Russell body  231  to transition from the conveyance-enabled orientation to the retracted orientation, and then to return the Scott-Russell body  231  to the conveyance-enabled orientation. In the following explanation, the inclined region  257 B, the separation region  257 C, and the lowering region  257 D are also referred to collectively as the retraction region. 
     The bundle conveyance unit  203  then uses the moving section  250  to move the Scott-Russell section  230  further toward the rear. When this is performed, the Scott-Russell section  230  moves the posts  236  rearward along the retracted region  257 E, and the rear face  232 R of the Scott-Russell plate  232  is abutted against the banknote bundle SB with the Scott-Russell body  231  maintained in the conveyance-enabled orientation, and the banknote bundle SB is pushed and conveyed toward the rear. 
     When the posts  236  moving toward the rear finally abut the front edges  258 F of the switches  258  disposed in an inclined guide mode ( FIG. 9A ), the front edges  258 F are applied with a force toward the rear, as illustrated in  FIG. 11B . Accordingly, the switches  258  continue to receive force from the posts  236  as the posts  236  slide against the front edges  258 F, and the switches  258  swing under this force about the swing shafts  258 X in the arrow R 2  direction, namely in the counterclockwise direction in the drawings, such that the switches  258  transition to the horizontal guidance mode ( FIG. 9B ). 
     When the posts  236  move into the movement regions  257 A and the location against which the posts  236  are sliding reaches the tips  258 P, the switches  258  no longer receive force from the posts  236 , and return from the horizontal guidance mode to the incline guidance mode ( FIG. 9A ) under the action of the springs (not illustrated in the drawings). 
     The bundle conveyance unit  203  then continues to use the moving section  250  to move the Scott-Russell section  230  toward the rear. When this is performed, the Scott-Russell section  230  moves the posts  236  toward the rear in the movement regions  257 A, thereby moving the banknote bundle SB toward the rear with the rear face  232 R of the Scott-Russell plate  232  maintained in a state abutting the banknote bundle SB. 
     When the bundle conveyance unit  203  finally brings the banknote bundle SB as far as the rear end of the fixed conveyance guide  223 , the banknote bundle SB is caused to fall into the intake hole  17 H ( FIG. 1 ), to be stored inside the reject storage box  17 . The bundle conveyance unit  203  then moves the Scott-Russell section  230  to the rearmost position so as to be prepared for the next pay-out conveyance operation, and the take-in conveyance operation is ended. 
     Note that if the banknote bundle SB is taken by the user in the state illustrated in  FIG. 10A , the bundle conveyance unit  203  moves the Scott-Russell section  230  toward the rear side with the Scott-Russell body  231  maintained in the conveyance-enabled orientation, thereby preparing for the next pay-out conveyance operation. 
     In the above configuration, in the bundle conveyance unit  203  according to the third exemplary embodiment, the slide grooves  257  that are at a different height from the bundle conveyance face  203 S in each region are provided to the left guide plate  251  and the right guide plate  252 , and the posts  236  provided at substantially the same height as the lower edge of the Scott-Russell plate  232  are inserted through the slide grooves  257 . Moreover, the slide groove  257  is formed with a quadrilateral ring-shaped path at the rear end of the straight line shape movement region  257 A by the inclined region  257 B, the separation region  257 C, the lowering region  257 D, and the retracted region  257 E, with the switch  258  provided at the connection location between the movement region  257 A, the inclined region  257 B, and the retracted region  257 E. 
     The bundle conveyance unit  203  uses the moving section  250  to move the Scott-Russell section  230  toward the front, thereby moving the posts  236  from the movement regions  257 A through the inclined regions  257 B and the separation regions  257 C to the lowering regions  257 D. When this is performed, the lower edge of the Scott-Russell plate  232  of the Scott-Russell section  230  is lifted to above the banknote bundle SB by the inclined regions  257 B, and moved toward the front of the banknote bundle SB by the separation regions  257 C, and the lower edge (namely, the claw-shaped portions  232 C) is then moved downward, further to the lower side than the lower face of the banknote bundle SB by the lowering regions  257 D. In other words, the Scott-Russell plate  232  transitions from the conveyance-enabled orientation, through the retracted orientation, and back to the conveyance-enabled orientation so as to pass over the banknote bundle SB, thereby moving from the rear side to the front side of the banknote bundle SB. 
     From another perspective, the bundle conveyance unit  203  is capable of moving the Scott-Russell plate  232  from the rear side to the front side of the banknote bundle SB, namely of switching between the forward conveyance state and the rearward conveyance state and switching the conveyance direction of the banknote bundle SB from toward the front to toward the rear, simply by moving the Scott-Russell section  230  toward the front and toward the rear. When this is performed, the bundle conveyance unit  203  is capable of moving the posts  236  upward along the inclined regions  257 B of the slide grooves  257 , forward along the separation regions  257 C, and downward along the lowering regions  257 D respectively, such that there is no need to provide the Scott-Russell section  230  with another motive power source to move the Scott-Russell plate  232  in the vertical direction. 
     Accordingly, similarly to in the first exemplary embodiment, the bundle conveyance unit  203  enables suppression to a lower weight and configuration to be made simpler in comparison to a case in which a motive power source such as a motor is incorporated in the moving Scott-Russell section  230 . Moreover, the need to raise the rigidity of the respective sections of the moving section  250  is eliminated, enabling a reduction in size of the motor incorporated therein, and thereby enabling the overall configuration to be simplified. This enables a contribution to be made to reducing the size and reducing the power consumption. 
     Moreover, by combining the slide grooves  257  with the switches  258 , the moving section  250  is capable of guiding the posts  236  from the movement regions  257 A into the inclined regions  257 B when moving the Scott-Russell section  230  toward the front, and is capable of guiding the posts  236  from the retracted regions  257 E to the movement regions  257 A when moving the Scott-Russell section  230  toward the rear. Namely, in the bundle conveyance unit  203 , there is no need to actively switch the swing angle of the switch  258 , and the posts  236  can be guided to appropriate regions according to their direction of progress using a simple configuration that utilizes the force applied from the posts  236  and force from the action of springs (not illustrated in the drawings). 
     Moreover, in the bundle conveyance unit  203 , the banknote bundle SB is placed in a state on the fixed conveyance guide  223  in the pay-out port  226  to be taken by the user. Accordingly, the upper conveyor belt  21  and the lower conveyor belt  24  ( FIG. 1 ) provided in the first exemplary embodiment can be omitted from the bundle conveyance unit  203 , enabling the configuration to be simplified. 
     According to the above configuration, in the bundle conveyance unit  203  according to the third exemplary embodiment, the Scott-Russell section  230  is moved toward the front and toward the rear while moving the posts  236  along the slide grooves  257 . When this is performed, the bundle conveyance unit  203  conveys the banknote bundle SB along the bundle conveyance path  203 Y toward the front, and then causes the Scott-Russell body  231  to transition from the conveyance-enabled orientation to the retracted orientation, and then returns the Scott-Russell body  231  to the conveyance-enabled orientation at the front side of the banknote bundle SB, thereby switching from the forward conveyance state to the rearward conveyance state, enabling the banknote bundle SB to be moved along the bundle conveyance path  203 Y toward the rear. Accordingly, the bundle conveyance unit  203  enables the conveyance direction of the banknote bundle SB to be switched from forward to rearward without providing a motive power source to the Scott-Russell section  230 , which moves in the front-rear direction. 
     4. Fourth Exemplary Embodiment 
     4-1. Scott-Russell Section and Moving Section Configuration 
     In a fourth exemplary embodiment, the banknote bundle SB is conveyed in the front-rear direction along a bundle conveyance path  303 Y by a bundle conveyance unit  303  illustrated in  FIG. 12A  and  FIG. 12B , corresponding to  FIG. 8A  and  FIG. 8B , instead of by the bundle conveyance unit  203  of the third exemplary embodiment. The bundle conveyance unit  303  differs from the bundle conveyance unit  203  in the point that a Scott-Russell mechanism  328  is provided instead of the Scott-Russell mechanism  128 . The Scott-Russell mechanism  328  is configured by a Scott-Russell section  330  and a moving section  350  instead of the Scott-Russell section  230  and the moving section  250  ( FIGS. 8  and  FIGS. 9 ) of the Scott-Russell mechanism  128 . 
     The Scott-Russell section  330  is configured by a Scott-Russell body  331  instead of the Scott-Russell body  231 , and a support body  41  configured similarly to in the first and third exemplary embodiments. As illustrated in  FIG. 12A  and  FIG. 12B , the Scott-Russell body  331  is configured by a Scott-Russell plate  332 , a left arm  333 , a right arm  334 , swing shafts  335 , and posts  336 . Note that the support body  41  is omitted from illustration in  FIG. 12A  and  FIG. 12B . 
     The Scott-Russell plate  332  extends further in the vertical direction than the Scott-Russell plate  232  according to the third exemplary embodiment ( FIG. 8 ) so as to be approximately twice as long in the vertical direction. The Scott-Russell plate  332  includes claw-shaped portions  332 C at a lower edge, similarly to the Scott-Russell plate  232  of the third exemplary embodiment, and also includes claw-shaped portions  332 C at an upper edge. 
     In other words, the Scott-Russell plate  332  has a shape that would be obtained by producing two of the Scott-Russell plates  232 , inverting one of the Scott-Russell plate  232  from top-to-bottom, and joining it to the upper edge of the other. In the following explanation, a face on the front side of the Scott-Russell plate  332  in the state illustrated in  FIG. 12A  and  FIG. 12B  is referred to as the abutting face  332 T. 
     Similarly to the left arm  233  in the third exemplary embodiment, the left arm  333  is formed in a rod shape that is long in the front-rear direction and short in the vertical and left-right directions, and is positioned so as to extend forward and perpendicular to an vertical direction substantially central portion of the left end of the Scott-Russell plate  332 . The right arm  334  is configured with left-right symmetry to the left arm  333 . 
     The swing shafts  335  have the same shape as the swing shafts  235  according to the third exemplary embodiment, and extend outward toward the left and right from substantially the center of the left arm  333  and the right arm  334  in the front-rear direction. The swing shafts  335  are swingably supported by the support body  41  ( FIGS. 2 , etc.). The posts  336  have the same shape as the posts  236  according to the third exemplary embodiment, and extend outward toward the left and right from the vicinity of respective front ends of the left arm  333  and the right arm  334 . 
     The moving section  350  differs from the moving section  250  of the third exemplary embodiment ( FIG. 9 , etc.) in the point that it includes a left guide plate  351  and a right guide plate  352  instead of the left guide plate  251  and the right guide plate  252 . The moving section  350  is similar to the moving section  250  in other respects. As illustrated in  FIG. 13 , the left guide plate  351  includes a slide groove  357  instead of the slide groove  257 . The slide groove  357  is broadly divided into five regions of a movement region  357 A, an inclined region  357 B, a lift-up region  357 C, an inclined region  357 D, and a lift-up region  357 E. 
     The movement region  357 A is configured similarly to the movement region  57 A according to the first exemplary embodiment and the movement region  257 A according to the third exemplary embodiment. However, the movement region  357 A is disposed so as to be slightly higher than a bundle conveyance face  303 S, this being the upper face of the fixed conveyance guide  223 . The inclined region  357 B is connected to a front end of the movement region  357 A, and is formed shorter, and lower at a front end, than the inclined region  257 B of the third exemplary embodiment, for example, with the vertical incline inverted. 
     The lift-up region  357 C is connected to a front lower end of the inclined region  357 B, and is formed so as to head downward. The length of the lift-up region  357 C in the vertical direction is, for example, the same as or longer than the length from the swing shaft  335  of the left arm  333  to the post  336 . The inclined region  357 D is connected to a rear end of the movement region  357 A. The inclined region  357 D and the lift-up region  357 E are formed with front-rear symmetry to the inclined region  357 B and the lift-up region  357 C respectively. 
     Accordingly, in the slide groove  357 , the front end of the movement region  357 A running along the front-rear direction and an upper end of the lift-up region  357 C running along the vertical direction are connected together by the inclined region  357 B, and the rear end of the movement region  357 A and an upper end of the lift-up region  357 E running along the vertical direction are connected together by the inclined region  357 D. Namely, the slide groove  357  has an overall shape resembling a letter U that has been stretched out along the left-right direction and turned upside-down. The right guide plate  352  includes a slide groove  357  similarly to the left guide plate  351 . 
     4-2. Banknote Bundle Conveyance Operation 
     Next, explanation follows regarding a conveyance operation of the banknote bundle SB by the bundle conveyance unit  303 . As illustrated in  FIGS. 12 , in a pay-out conveyance operation the bundle conveyance unit  303  uses the moving section  350  to move the Scott-Russell section  330  toward the front in a state in which the banknote bundle SB has been placed on the fixed conveyance guide  223 , the Scott-Russell plate  332  has been positioned at the rear side of the banknote bundle SB, and the abutting face  332 T of the Scott-Russell plate  332  faces toward the front. 
     When this is performed, the left and right posts  336  of the Scott-Russell body  331  of the Scott-Russell section  330  are in the movement regions  357 A of the slide grooves  357 , and since the abutting face  332 T of the Scott-Russell plate  332  faces forward, a portion of the abutting face  332 T abuts the banknote bundle SB so as to convey the banknote bundle SB toward the front by applying force toward the front. In the following, such an orientation of the Scott-Russell body  331  in which the abutting face  332 T of the Scott-Russell plate  332  faces toward the front and is capable of conveying the banknote bundle SB toward the front is referred to as the forward conveyance-enabled orientation. Moreover, in the present exemplary embodiment, a state in which the Scott-Russell body  331  is in the forward conveyance-enabled orientation, and the Scott-Russell plate  332  is positioned at the rear side of the banknote bundle SB and is capable of conveying the banknote bundle SB toward the front is referred to as the forward conveyance state. 
     As illustrated in  FIG. 14A , in the bundle conveyance unit  303 , the posts  336  reach the front end of the movement regions  357 A. Note that similarly to in  FIG. 10A  and the like, the upper part of  FIG. 14A  illustrates the Scott-Russell body  331 , and the lower part of  FIG. 14A  illustrates part of the left guide plate  351 . At this stage, the bundle conveyance unit  303  ends the pay-out conveyance operation, and the banknote bundle SB placed on the fixed conveyance guide  223  in the pay-out port  226  can be taken by the user. Note that when a user forgets to take the banknote bundle SB, the bundle conveyance unit  303  commences the banknote bundle SB take-in conveyance operation. 
     First, the bundle conveyance unit  303  uses the moving section  350  to apply the Scott-Russell section  330  with force toward the front. When this is performed, the Scott-Russell body  331  of the Scott-Russell section  330  applies the swing shafts  335  with force toward the front, and this force is transmitted to the posts  336 . 
     Accordingly, the posts  336  gradually descend along the inclined regions  357 B of the slide grooves  357 , and reach the upper end of the lift-up regions  357 C, as illustrated in  FIG. 14B . Namely, the posts  336  are positioned lower than the swing shafts  335 . In the Scott-Russell body  331 , since the height of the support body  41  ( FIGS. 2 , etc.) is constant, the height of the swing shafts  335  is also constant. Accordingly, the Scott-Russell body  331  swings about the swing shafts  335  in the clockwise direction in the drawings, and the lower edge of the Scott-Russell plate  332  is lifted slightly up from the bundle conveyance face  303  S. 
     The bundle conveyance unit  303  then uses the moving section  350  to apply the Scott-Russell section  330  with further force toward the front. When this is performed, although force from the support body  41  ( FIGS. 2 , etc.) side is transmitted to the Scott-Russell body  331  of the Scott-Russell section  330  through the swing shafts  335 , since the lift-up region  357 C of the slide grooves  357  runs in the vertical direction, the posts  336  are caused to descend so as to escape along the lift-up region  357 C. Accordingly, since the posts  336  descend with respect to the swing shafts  335 , the overall Scott-Russell body  331  swings in the clockwise direction in the drawings, and as illustrated in  FIG. 14C , the Scott-Russell plate  332  adopts a state lifted so as to be substantially horizontal when the swing shafts  335  reach substantially directly above the posts  336  in the lift-up regions  357 C. In the present exemplary embodiment, such an orientation in which the Scott-Russell plate  332  of the Scott-Russell body  331  is retracted from the bundle conveyance path  303 Y is referred to hereafter as the retracted orientation. 
     The bundle conveyance unit  303  continues to use the moving section  350  to apply the Scott-Russell section  330  with force further toward the front. When this is performed, in the Scott-Russell body  331  of the Scott-Russell section  330 , the swing shafts  335  are now positioned further toward the front than the posts  336 , such that the posts  336  are pulled upward along the lift-up regions  357 C accompanying the movement of the swing shafts  335  toward the front. The Scott-Russell body  331  accordingly further swings overall in the clockwise direction in the drawings, and as illustrated in  FIG. 15A , at the stage that the posts  336  reach the upper ends of the lift-up regions  357 C, the Scott-Russell plate  332  is positioned at the front side of the banknote bundle SB, and the abutting face  332 T faces toward the rear. 
     In other words, in the Scott-Russell body  331 , the swing shafts  335  are moved from the rear side to the front side of the posts  336  while movement of the posts  336  in the front-rear direction is restricted such that the posts  336  move only in the vertical direction. The Scott-Russell plate  332  can thus be moved from the rear side to the front side of the banknote bundle SB while performing half a rotation so as to stride over the banknote bundle SB. 
     Next, the bundle conveyance unit  303  uses the moving section  350  to apply the Scott-Russell section  330  with force toward the rear. When this is performed, the posts  336  reach the movement regions  357 A via the inclined regions  357 B, before moving further toward the rear. The overall Scott-Russell body  331  of the Scott-Russell section  330  accordingly moves toward to the rear in a state in which the claw-shaped portions  332 C provided at the lower edge have been caused to enter the claw-guide grooves  223 D ( FIG. 12 ) of the fixed conveyance guide  223 . The abutting face  332 T abuts the front face of the banknote bundle SB, conveying the banknote bundle SB toward the rear. In the following explanation, this orientation, in which the abutting face  332 T of the Scott-Russell plate  332  of the Scott-Russell body  331  faces toward the rear and is capable of conveying the banknote bundle SB toward the rear is referred to as the rearward conveyance-enabled orientation. Moreover, in the present exemplary embodiment, this state in which the Scott-Russell body  331  is in the rearward conveyance-enabled orientation and the Scott-Russell plate  332  is positioned at the rear side of the banknote bundle SB and is capable of conveying the banknote bundle SB toward the rear is referred to as the rearward conveyance state. 
     In this manner, the bundle conveyance unit  303  is capable of utilizing the lift-up region  357 C to switch the Scott-Russell body  331  from the forward conveyance state to the rearward conveyance state, and switch the conveyance direction of the banknote bundle SB from toward the front to toward the rear. From another perspective, the inclined region  357 B and the lift-up region  357 C of the slide groove  357  configure regions to cause the Scott-Russell body  331  to transition from the forward conveyance-enabled orientation to the retracted orientation, and then to the rearward conveyance-enabled orientation. The inclined region  357 B and the lift-up region  357 C are also referred to collectively as the retraction region hereafter. 
     When the bundle conveyance unit  303  finally brings the banknote bundle SB as far as the rear end of the fixed conveyance guide  223 , the banknote bundle SB is caused to fall into the intake hole  17 H ( FIG. 1 ), to be stored inside the reject storage box  17 . The bundle conveyance unit  303  then moves the Scott-Russell section  330  further toward the rear, and moves the posts  336  as far as the rear ends of the movement region  357 A. Note that the bundle conveyance unit  303  utilizes the inclined region  357 D and the lift-up region  357 E to perform an operation with front-rear symmetry to when utilizing the inclined region  357 B and the lift-up region  357 C, such that the Scott-Russell plate  332  of the Scott-Russell body  331  is rotated halfway in the counterclockwise direction, to return to the forward conveyance-enabled orientation in which the abutting face  332 T faces toward the front. The bundle conveyance unit  303  is thus in a state prepared for the next pay-out conveyance operation, and ends the take-in conveyance operation. 
     Note that if the banknote bundle SB is taken by the user in the state illustrated in  FIG. 14A , the bundle conveyance unit  303  moves the Scott-Russell section  330  toward the rear side while still in the forward conveyance-enabled orientation, thus preparing for the next pay-out conveyance operation. 
     In the above configuration, in the bundle conveyance unit  303  according to the fourth exemplary embodiment the left guide plate  351  and the right guide plate  352  are provided with the slide grooves  357 . The posts  336  provided on the opposite side of the swing shafts  335  to the Scott-Russell plate  332  are inserted through the slide grooves  357 . The slide grooves  357  are provided with the inclined regions  357 B and  357 D at both the front and rear ends of the movement region  357 A that runs along the front-rear direction, and the lift-up regions  357 C and  357 E that run along the vertical direction are connected at the lower sides. 
     The bundle conveyance unit  303  uses the moving section  350  to move the Scott-Russell section  330  toward the front, thereby moving the posts  336  from the movement regions  357 A through the inclined regions  357 B and into the lift-up regions  357 C. When this is performed, the relative positions of the posts  336  with respect to the swing shafts  335  change from the front side to the rear side in the Scott-Russell section  330 , accompanying which the Scott-Russell plate  332  is rotated halfway so as to be lifted up and moved from the rear side to the front side of the banknote bundle SB. 
     Namely, the bundle conveyance unit  303  is capable of moving the Scott-Russell plate  332  from the rear side to the front side of the banknote bundle SB, namely is capable of switching from the forward conveyance state to the rearward conveyance state and switching the conveyance direction of the banknote bundle SB from toward the front to toward the rear, simply by moving the Scott-Russell section  330  toward the front. When this is performed, the bundle conveyance unit  303  is capable of moving the posts  336  in the vertical direction along the lift-up region  357 C of the slide groove  357 , such that there is no need to provide the Scott-Russell section  330  with another motive power source to lift up and place the Scott-Russell plate  332  in the retracted orientation. 
     Similarly to in the first and the third exemplary embodiments, the bundle conveyance unit  303  enables suppression to a lower weight and configuration to be made simpler in comparison to a case in which a motive power source such as a motor is incorporated in the moving Scott-Russell section  330 . Moreover, the need to raise the rigidity of the respective sections of the moving section  350  is eliminated, enabling a reduction in size of the motor incorporated therein, and thereby enabling the overall configuration to be simplified. This enables a contribution to be made to reducing the size and reducing the power consumption. 
     According to the above configuration, the bundle conveyance unit  303  according to the fourth exemplary embodiment moves the Scott-Russell section  330  toward the front or toward the rear while moving the posts  336  along the slide groove  357 . When this is performed, the bundle conveyance unit  303  conveys the banknote bundle SB along the bundle conveyance path  303 Y toward the front, after which the Scott-Russell body  331  is caused to transition from the forward conveyance-enabled orientation to the rearward conveyance-enabled orientation, and then caused to further transition to the rearward conveyance-enabled orientation at the front side of the banknote bundle SB so as to switch from the forward conveyance state to the rearward conveyance state, enabling the banknote bundle SB to be conveyed along the bundle conveyance path  303 Y toward the rear. The bundle conveyance unit  303  is thereby capable of switching the conveyance direction of the banknote bundle SB from toward the front to toward the rear without providing a motive power source to the Scott-Russell section  330  that moves along the front-rear direction. 
     5. Fifth Exemplary Embodiment 
     5-1. Scott-Russell Section and Moving Section Configuration 
     In a fifth exemplary embodiment the banknote bundle SB is conveyed in the front-rear direction along a bundle conveyance path  403 Y by a bundle conveyance unit  403  instead of by the bundle conveyance unit  3  of the first exemplary embodiment. As illustrated in  FIG. 16A  to  FIG. 16C , the bundle conveyance unit  403  differs from the bundle conveyance unit  3  in the points that upper conveyor belts  421  and a Scott-Russell mechanism  428  are provided instead of the upper conveyor belts  21  and the Scott-Russell mechanism  28 . 
     The upper conveyor belt  421  ( FIG. 16A ) is shorter in the front-rear direction than the upper conveyor belt  21  of the first exemplary embodiment ( FIGS. 2 ), and is similar in length to the lower conveyor belt  24 , and disposed substantially directly above the lower conveyor belt  24 . The Scott-Russell mechanism  428  is configured by a Scott-Russell section  430  and a moving section  450  instead of the Scott-Russell section  30  and the moving section  50  of the Scott-Russell mechanism  28  ( FIGS. 2 , etc.). 
     The Scott-Russell section  430  differs greatly from the first to the fourth exemplary embodiments in that it covers the entire banknote bundle SB from the upper side. Specifically, the Scott-Russell section  430  is configured around a base  431  having a plate shape that is thin in the vertical direction. The length of the base  431  in the left-right direction is shorter than the long edge of a banknote, and the length of the base  431  in the front-rear direction is longer than the short edge of a banknote. Rear Scott-Russell plates  432  are respectively provided in the vicinity of both left and right ends of a rear edge of the base  431 , and front Scott-Russell plates  433  are respectively provided in the vicinity of both left and right ends of a front edge of the base  431 . 
     The rear Scott-Russell plates  432  are formed in thin plate shapes that are thin in the front-rear direction, have a left-right direction length sufficiently shorter than that of the base  431 , and extend downward from the rear edge of the base  431 . The front Scott-Russell plates  433  are configured with front-rear symmetry to the rear Scott-Russell plates  432 , and extend downward from the front edge of the base  431 . Note that the rear Scott-Russell plates  432  and the front Scott-Russell plates  433  correspond to the Scott-Russell plate  32  of the first exemplary embodiment ( FIGS. 2 ,  FIG. 3 , etc.). 
     A shaft bearing portion  434  is provided in the vicinity of the front-rear and left-right center of an upper face of the base  431 . The shaft bearing portion  434  is formed in a rectangular block shape with sufficiently shorter lengths in the front-rear direction and the left-right direction than those of the base  431 . Circular shaft holes  434 H are provided penetrating both left and right side faces of the shaft bearing portion  434  in the left-right direction in the vicinity of the center of the left and right side faces. A swing shaft  435  is inserted through the shaft holes  434 H. 
     The swing shaft  435  is formed in a circular column shape with its center axis along the left-right direction, and has a longer length in the left-right direction than the fixed conveyance guide  23 . The external diameter of the swing shaft  435  is slightly smaller than the diameter of the shaft holes  434 H. Accordingly, the Scott-Russell section  430  is capable of swinging about the swing shaft  435  in the arrow R 3  direction and the arrow R 4  direction, namely in the clockwise direction and the counterclockwise direction in  FIG. 16A . 
     A friction block  436  is attached to an upper face of the shaft bearing portion  434 . The friction block  436  is configured by an elastic, high friction body such as rubber, and an upper curved face  436 S is formed at an upper side of the friction block  436 . As illustrated in  FIG. 16A , the upper curved face  436 S is formed in a circular arc shape with a common center to the shaft holes  434 H and the swing shaft  435 , as seen from the left-right direction. The upper curved face  436 S of the friction block  436  is thereby capable of maintaining a constantly uniform height at its uppermost location, even when the Scott-Russell section  430  has swung about the swing shaft  435 . 
     The moving section  450  is configured by a left guide plate  451 , a right guide plate  452 , drive belt sections  454 , and an upper guide plate  458 , as well as by a motor, gears, and the like, not illustrated in the drawings. The left guide plate  451  corresponds to the left guide plate  51  according to the first exemplary embodiment, and is formed in a plate shape that is thin in the left-right direction and long in the front-rear direction, and is provided with a slide groove  457 . The slide groove  457  is formed in a straight line shape running along the front-rear direction, and has a groove width that is slightly larger than the external diameter of the swing shaft  435 . The right guide plate  452  is configured with left-right symmetry to the left guide plate  451 . 
     The drive belt sections  454  are disposed at the left side of the left guide plate  451  and at the right side of the right guide plate  452  respectively, and are configured similarly to the drive belt section  54  ( FIG. 2 ) of the first exemplary embodiment so as to drive belts  454 B. The swing shafts  435  are fixed to predetermined locations on the belts  454 B through fixing members  441 . Accordingly, the moving section  450  is capable of moving the swing shafts  435  in the front-rear direction, accompanying which the Scott-Russell section  430  is moved in the front-rear direction, by driving the respective belts  454 B in the front-rear direction using the left and right drive belt sections  454 . 
     The upper guide plate  458  is formed in a plate shape that is thin in the vertical direction and long in the front-rear direction. A lower face  458 L of the upper guide plate  458  is substantially parallel to a bundle conveyance face  403 S, this being the upper face of the fixed conveyance guide  23 , and the separation between the lower face  458 L and the bundle conveyance face  403 S is substantially uniform between each location. In the Scott-Russell section  430 , the height of a lower face  458 L, serving as a guide face, or more specifically the position thereof in the vertical direction with respect to the slide grooves  457 , is adjusted so as to abut an upper end of the friction block  436 , namely the highest location on the upper curved face  436 S. 
     In the moving section  450 , the lower face  458 L of the upper guide plate  458  is thus capable of abutting an apex portion of the friction block  436  in the Scott-Russell section  430 , namely the highest location on the upper curved face  436 S, at any position to which the Scott-Russell section  430  has been moved in the front-rear direction. 
     Note that as described above, the friction block  436  is configured from a high friction body, and so when the Scott-Russell section  430  is moved in the front-rear direction by the moving section  450 , friction arises between the friction block  436  and the lower face  458 L of the upper guide plate  458 , and the overall Scott-Russell section  430  is swung by this friction. 
     For example, when the Scott-Russell section  430  is moved toward the front by the moving section  450 , friction arises between the friction block  436  and the lower face  458 L, and the friction block  436  attempts to rotate in the arrow R 3  direction in  FIG. 16A , namely in the counterclockwise direction. Accordingly, as illustrated in  FIG. 17A , in the Scott-Russell section  430 , lower ends of the rear Scott-Russell plates  432  are caused to enter the claw-guide grooves  23 D, and front faces of the rear Scott-Russell plates  432  abut the rear side of the banknote bundle SB. This orientation of the Scott-Russell section  430  is referred to hereafter as the forward conveyance orientation. When the Scott-Russell section  430  is moved further toward the front, swinging in the arrow R 3  direction is restricted by a stopper, not illustrated in the drawings, and the Scott-Russell section  430  conveys the banknote bundle SB toward the front along the bundle conveyance path  403 Y while maintaining the forward conveyance orientation. 
     Moreover, when the Scott-Russell section  430  is moved toward the rear by the moving section  450 , friction arises between the friction block  436  and the lower face  458 L, and the friction block  436  attempts to rotate in the arrow R 4  direction in  FIG. 16A , namely in the clockwise direction. Accordingly, as illustrated in  FIG. 17B , in the Scott-Russell section  430 , lower ends of the front Scott-Russell plates  433  are caused to enter the claw-guide grooves  23 D, and rear faces of the front Scott-Russell plates  433  abut the front side of the banknote bundle SB. This orientation of the Scott-Russell section  430  is referred to hereafter as the rearward conveyance orientation. When the Scott-Russell section  430  is moved further toward the rear, swinging in the arrow R 4  direction is restricted by a stopper, not illustrated in the drawings, and the Scott-Russell section  430  conveys the banknote bundle SB toward the rear along the bundle conveyance path  403 Y while maintaining the rearward conveyance orientation. 
     In this manner, when the Scott-Russell section  430  is moved toward the front or toward the rear by the moving section  450  in a state positioned substantially directly above the banknote bundle SB, the Scott-Russell section  430  is swung by friction arising between the friction block  436  and the lower face  458 L so as to adopt the forward conveyance orientation or the rearward conveyance orientation, enabling the banknote bundle SB to be conveyed toward the front or toward the rear. Note that for as long as the Scott-Russell section  430  is moving in the same direction, the Scott-Russell section  430  moves while maintaining its orientation (forward conveyance orientation or rearward conveyance orientation) due to the friction arising between the friction block  436  and the lower face  458 L. 
     5-2. Banknote Bundle Conveyance Operation 
     Next, explanation follows regarding a conveyance operation of the banknote bundle SB by the bundle conveyance unit  403 . As illustrated in  FIG. 17A , in a pay-out conveyance operation of the bundle conveyance unit  303 , the banknote bundle SB is placed on the fixed conveyance guide  23 , and the Scott-Russell section  430  is positioned at the upper side of the banknote bundle SB in the forward conveyance orientation. 
     The bundle conveyance unit  403  uses the moving section  450  to move the Scott-Russell section  430  toward the front, such that as illustrated in  FIG. 18A , the banknote bundle SB is conveyed toward the front by the rear Scott-Russell plates  432  with the Scott-Russell section  430  maintained in the forward conveyance orientation. 
     When the bundle conveyance unit  403  detects with a sensor, not illustrated in the drawings, that a front side portion of the banknote bundle SB is sandwiched between the upper conveyor belt  421  and the lower conveyor belt  24 , as illustrated in  FIG. 18B , the bundle conveyance unit  403  stops the movement of the Scott-Russell section  430  by the moving section  450 . 
     Next, the bundle conveyance unit  403  drives the upper conveyor belt  421  and the lower conveyor belt  24  toward the front respectively, thereby conveying the banknote bundle SB toward the front. The bundle conveyance unit  403  thus grips the rear side of the banknote bundle SB with the upper conveyor belt  421  and the lower conveyor belt  24 , as illustrated in  FIG. 18C  which corresponds to  FIG. 4C , to adopt a state in which the front side of the banknote bundle SB is exposed in the pay-out port  26 , and the user is prompted to take the banknote bundle SB. 
     Note that when a user forgets to take the banknote bundle SB, the bundle conveyance unit  403  commences the banknote bundle SB take-in conveyance operation. First, the bundle conveyance unit  403  drives the upper conveyor belt  421  and the lower conveyor belt  24  toward the rear, thereby conveying the banknote bundle SB toward the rear along the bundle conveyance path  403 Y, and the banknote bundle SB is moved to substantially directly below the Scott-Russell section  430 , similarly to as illustrated in  FIG. 18B . 
     Next, the bundle conveyance unit  403  uses the moving section  450  to apply the Scott-Russell section  430  in the forward conveyance orientation with force toward the rear. When this is performed, the Scott-Russell section  430  is applied with force toward the rear by the swing shaft  435 , and swings in the arrow R 4  direction ( FIG. 16A ) due to the friction arising between the friction block  436  and the lower face  458 L to adopt the rearward conveyance orientation, as illustrated in  FIG. 19 . 
     The bundle conveyance unit  403  then uses the moving section  450  to move the Scott-Russell section  430  toward the rear, such that the banknote bundle SB is conveyed toward the rear by the front Scott-Russell plates  433  with the Scott-Russell section  430  maintained in the rearward conveyance orientation. 
     When the bundle conveyance unit  403  finally brings the banknote bundle SB as far as the rear end of the fixed conveyance guide  23 , the banknote bundle SB is caused to fall into the intake hole  17 H ( FIG. 1 ), to be stored inside the reject storage box  17 . The bundle conveyance unit  403  then moves the Scott-Russell section  430  to the rearmost position and then moves the Scott-Russell section  430  slightly toward the front side. The Scott-Russell section  430  is thereby returned to the forward conveyance orientation ( FIG. 17A ) and prepared for the next pay-out conveyance operation, and the take-in conveyance operation is then ended. 
     Note that if the banknote bundle SB is taken by the user in the state illustrated in  FIG. 18C , similarly to when the banknote bundle SB has been forgotten, the bundle conveyance unit  403  moves the Scott-Russell section  430  to the rearmost position and then moves the Scott-Russell section  430  slightly toward the front side. The Scott-Russell section  430  is thereby returned to the forward conveyance orientation and prepared for the next pay-out conveyance operation, and the take-in conveyance operation is then ended. 
     In the above configuration, the bundle conveyance unit  403  according to the fifth exemplary embodiment is provided with the rear Scott-Russell plates  432  and the front Scott-Russell plates  433  at the rear side and the front side of the Scott-Russell section  430  respectively, such that the entire Scott-Russell section  430  is swung about the swing shaft  435 , and the friction block  436  is caused to abut the lower face  458 L of the upper guide plate  458 . 
     The bundle conveyance unit  403  uses the friction arising between the upper curved face  436 S of the friction block  436  and the lower face  458 L of the upper guide plate  458  to change the orientation of the Scott-Russell section  430  to the forward conveyance orientation or the rearward conveyance orientation ( FIG. 17 ) accompanying the movement direction of the Scott-Russell section  430  by the moving section  450 , and conveys the banknote bundle SB toward the front or toward the rear. 
     Namely, the bundle conveyance unit  403  changes the orientation of the Scott-Russell section  430 , enabling the conveyance direction of the banknote bundle SB to be switched to toward the front or toward the rear, simply by switching the direction in which the Scott-Russell section  430  is moved by the moving section  450 . When this is performed, the bundle conveyance unit  403  utilizes the friction arising between the upper curved face  436 S and the lower face  458 L, such that there is no need to provide a separate motive power source to swing the Scott-Russell section  430 . 
     Similarly to in the first to the fourth exemplary embodiments, the bundle conveyance unit  403  enables suppression to a lower weight and configuration to be made simpler in comparison to a case in which a motive power source such as a motor is incorporated in the moving Scott-Russell section  430 . Moreover, the need to raise the rigidity of the respective sections of the moving section  450  is eliminated, enabling a reduction in size of the motor incorporated therein, and thereby enabling the overall configuration to be simplified. This enables a contribution to be made to size reduction and power consumption reduction. 
     In particular, in the bundle conveyance unit  403 , the shape of the upper curved face  436 S of the friction block  436  of the Scott-Russell section  430  as viewed along the left-right direction is configured in a circular arc shape centered on the swing shaft  435 , and the lower face  458 L of the upper guide plate  458  is formed so as to be flattened along the front-rear direction. 
     Accordingly, in the bundle conveyance unit  403 , the upper curved face  436 S of the friction block  436  is capable of abutting the lower face  458 L of the upper guide plate  458  at all times, irrespective of the orientation of the Scott-Russell section  430  when the Scott-Russell section  430  is being moved in the front-rear direction by the moving section  450 . Accordingly, the bundle conveyance unit  403  can be maintained in a fixed orientation for a duration in which the movement direction of the Scott-Russell section  430  by the moving section  450  remains unchanged, thereby enabling stable conveyance of the banknote bundle SB by the rear Scott-Russell plates  432  or the front Scott-Russell plates  433 . 
     Moreover, in the bundle conveyance unit  403 , as long as the upper curved face  436 S is abutting the lower face  458 L, no matter what the position, the orientation of the Scott-Russell section  430  can be switched to the forward conveyance orientation or to the rearward conveyance orientation simply by reversing the movement direction of the Scott-Russell section  430 . Accordingly, if, for example, an issue occurs partway through pay-out conveyance processing, the bundle conveyance unit  403  is capable of switching the conveyance direction of banknotes being conveyed along the bundle conveyance path  403 Y at any location thereof, so as to convey the banknotes toward the rear without having to convey the banknotes toward the front as far as the pay-out port  26 . 
     Moreover, when the Scott-Russell section  430  is conveying the banknote bundle SB in the forward conveyance orientation ( FIG. 17A ), the rear Scott-Russell plates  432  abut the rear side of the banknote bundle SB, the base  431  is tilted at the upper side of the banknote bundle SB, and the front Scott-Russell plates  433  is positioned diagonally in front of and above the banknote bundle SB. The Scott-Russell section  430  can thereby restrain floating up of any banknotes from the banknote bundle SB during conveyance to within a certain range. The similar applies when in the rearward conveyance orientation ( FIG. 17B ). 
     According to the above configuration, the bundle conveyance unit  403  according to the fifth exemplary embodiment is provided with the rear Scott-Russell plates  432  and front Scott-Russell plates  433  at the rear side and the front side of the Scott-Russell section  430 , respectively, and the upper curved face  436 S of the friction block  436  disposed at the upper side of the swing shaft  435  abuts the lower face  458 L of the upper guide plate  458 . Accordingly, the bundle conveyance unit  403  is capable of using the friction arising between the upper curved face  436 S and the lower face  458 L to change the Scott-Russell section  430  to the forward conveyance orientation or the rearward conveyance orientation according to the direction of movement by the moving section  450 , enabling the banknote bundle SB to be conveyed toward the front or toward the rear. The bundle conveyance unit  403  is thereby capable of switching the conveyance direction of the banknote bundle SB to toward the front or toward the rear without providing a motive power source to the Scott-Russell section  430 , which moves in the front-rear direction. 
     6. Sixth Exemplary Embodiment 
     In a sixth exemplary embodiment, the banknote bundle SB is conveyed in the front-rear direction along a bundle conveyance path  503 Y by a bundle conveyance unit  503  as illustrated in  FIG. 20 , which corresponds to  FIG. 16A , instead of by the bundle conveyance unit  403  of the fifth exemplary embodiment. The bundle conveyance unit  503  differs from the bundle conveyance unit  403  in the point that a Scott-Russell mechanism  528  is provided instead of the Scott-Russell mechanism  428 . The Scott-Russell mechanism  528  includes a Scott-Russell section  530  and a moving section  550  instead of the Scott-Russell section  430  and the moving section  450 . 
     The Scott-Russell section  530  differs from the Scott-Russell section  430  according to the fifth exemplary embodiment in the point that the Scott-Russell section  530  includes a roller  536  and a roller support section  537  at the upper side of the shaft bearing portion  434  instead of the friction block  436 . The Scott-Russell section  530  is configured similarly to the Scott-Russell section  430  in other respects. 
     The roller  536  is formed in a small circular column shape with its center axis running in the left-right direction. The roller support section  537  is attached to an upper face of the shaft bearing portion  434  and rotatably supports the roller  536 . Note that the height of an upper end portion of the roller  536  is slightly higher than the highest location of the friction block  436  ( FIG. 16A ) of the fifth exemplary embodiment when the base  431  of the Scott-Russell section  530  is substantially horizontal ( FIG. 20 ; referred to below as the horizontal orientation). 
     The shape, attachment position, and the like of the roller support section  537  are adjusted such that the roller  536  is positioned substantially directly above the swing shaft  435  when the Scott-Russell section  530  is in the horizontal orientation. Accordingly, the height of the highest location of the roller  536  is highest when the Scott-Russell section  530  is in the horizontal orientation, and becomes lower than this when, for example, the base  431  is tilted in the forward conveyance orientation or the rearward conveyance orientation. 
     Moreover, the Scott-Russell section  530  is assembled with a spring, not illustrated in the drawings, in the vicinity of the swing shaft  435  and shaft bearing portion  434 . Force from this spring acts in a direction to return the Scott-Russell section  530  to the horizontal orientation when the Scott-Russell section  530  has been swung away from the horizontal orientation. 
     The moving section  550  differs from the moving section  450  according to the fifth exemplary embodiment in the point that an upper guide plate  558  is provided instead of the upper guide plate  458 . The moving section  550  is configured similarly to the moving section  450  in other respects. The upper guide plate  558  is, in addition to configuration similar to the upper guide plate  458 , further formed with respective cavities  561  and  562  in the vicinity of a front end, and in the vicinity of a rear end, of a lower face  558 L. When the Scott-Russell section  530  is in the horizontal orientation, an upper end of the roller  536  is higher than the lower face  558 L of the upper guide plate  558 , and lower than lower faces  561 B and  562 B of the cavities  561  and  562 . 
     Accordingly, when the roller  536  is directly below the lower face  558 L, namely positioned directly below a portion other than the cavity  561  or  562 , the roller  536  abuts the lower face  558 L and the Scott-Russell section  530  swings away from the horizontal orientation about the swing shaft  435 . The Scott-Russell section  530  accordingly adopts the forward conveyance orientation illustrated in  FIG. 21A  or the rearward conveyance orientation illustrated in  FIG. 21B . When this occurs, the upper end of the roller  536  abuts the lower face  558 L. Moreover, in the Scott-Russell section  530 , when the swing shaft  435  is positioned directly below the cavity  561  or  562 , the upper end of the roller  536  is positioned inside the cavity  561  or  562 , enabling the base  431  to become substantially horizontal. 
     For example, in the bundle conveyance unit  503 , in a state in which the Scott-Russell section  530  is positioned substantially directly below the cavity  561  and the upper end of the roller  536  has been caused to enter the cavity  561 , namely in the horizontal orientation, the Scott-Russell section  530  is moved toward the front by the moving section  550 . When this is performed, in the Scott-Russell section  530 , the roller  536  abuts a front side edge  561 F of the cavity  561 , such that the roller  536  swings about the swing shaft  435  to tilt in a direction downward and toward the rear, and the rear Scott-Russell plates  432  descend to adopt the forward conveyance orientation ( FIG. 21A ). 
     Moreover, when the Scott-Russell section  530  has been moved further toward the front by the moving section  550  in this state, due to the action of the spring, not illustrated in the drawings, the upper edge of the roller  536  that is being rotated continues to abut the lower face  558 L, and moves toward the front while maintaining the forward conveyance orientation. When this occurs, if the banknote bundle SB is substantially directly below the Scott-Russell section  530 , then as illustrated in  FIG. 21A , the rear Scott-Russell plates  432  abut the rear side of the banknote bundle SB, and the banknote bundle SB can be conveyed toward the front. 
     Moreover, in the bundle conveyance unit  503 , in a state in which the Scott-Russell section  530  is positioned substantially directly below the cavity  562  and the upper end of the roller  536  has been caused to enter the cavity  562 , namely in the horizontal orientation, the Scott-Russell section  530  is moved toward the rear by the moving section  550 . When this is performed, in the Scott-Russell section  530 , the roller  536  abuts a rear side edge  562 R of the cavity  562 , such that the roller  536  swings downward toward the front in a tilting-over direction about the swing shaft  435 , and the front Scott-Russell plates  433  descend to adopt the rearward conveyance orientation ( FIG. 21B ). 
     Moreover, when the Scott-Russell section  530  has been moved further toward the rear by the moving section  550  in this state, due to the action of the spring, not illustrated in the drawings, the upper edge of the roller  536  that is being rotated continues to abut the lower face  558 L, and moves toward the rear while maintaining the rearward conveyance orientation. When this occurs, if the banknote bundle SB is substantially directly below the Scott-Russell section  530 , then as illustrated in  FIG. 21B , the front Scott-Russell plates  433  abut the front side of the banknote bundle SB, and the banknote bundle SB can be conveyed toward the rear. 
     Namely, in the bundle conveyance unit  503 , in a state in which the roller  536  is positioned in the cavity  561  or  562 , when the direction of progress of the Scott-Russell section  530  has been switched by the moving section  550 , the orientation of the Scott-Russell section  530  is changed to the forward conveyance orientation or the rearward conveyance orientation, enabling the conveyance direction of the banknote bundle SB to be switched and enabling the banknote bundle SB to be conveyed in this state. 
     In the bundle conveyance unit  503 , similarly to as illustrated in  FIGS. 17  and  FIGS. 18  for the bundle conveyance unit  403  of the fifth exemplary embodiment, the Scott-Russell section  530  is moved toward the front or toward the rear by the moving section  550 , enabling pay-out conveyance processing and take-in conveyance processing to be performed. 
     In the above configuration, the bundle conveyance unit  503  according to the sixth exemplary embodiment is formed with the two cavities  561  and  562  in the lower face  558 L of the upper guide plate  558 , and the upper end of the roller  536  is higher than the lower face  558 L when the Scott-Russell section  530  is in the horizontal orientation. 
     Accordingly in the bundle conveyance unit  503 , when the roller  536  is abutting the lower face  558 L, the Scott-Russell section  530  can be moved while maintaining the forward conveyance orientation or the rearward conveyance orientation, enabling the banknote bundle SB to be conveyed along the bundle conveyance path  503 Y toward the front or toward the rear. Moreover in the bundle conveyance unit  503 , the Scott-Russell section  530  is moved toward the front or toward the rear, and when the upper end of the roller  536  is positioned inside the cavity  561  or  562 , the Scott-Russell section  530  returns to the horizontal orientation ( FIG. 20 ). Moreover, reversing the direction of progress enables switching between the forward conveyance orientation and the rearward conveyance orientation. 
     When this is performed, in the bundle conveyance unit  503 , the roller  536  abuts the front side edge  561 F of the cavity  561  or the rear side edge  562 R of the cavity  562  and a force acts on the Scott-Russell section  530 , and so these is no need to provide a separate motive power source to swing the Scott-Russell section  530 . Accordingly, similarly to in the first to the fifth exemplary embodiments, the bundle conveyance unit  503  enables suppression to a lower weight and configuration to be made simpler in comparison to a case in which a motive power source such as a motor is incorporated in the moving Scott-Russell section  530 . Moreover, the need to raise the rigidity of the respective sections of the moving section  550  is eliminated, enabling a reduction in size of the motor incorporated therein, and thereby enabling the overall configuration to be simplified. This enables a contribution to be made to size reduction and power consumption reduction. 
     In particular, in the Scott-Russell section  530 , the roller  536  is rotatably supported by the roller support section  537 , and the roller  536  causes hardly any friction against the lower face  558 L of the upper guide plate  558 . Accordingly, the Scott-Russell section  530  can be moved smoothly while maintaining the orientation in which the roller  536  abuts the lower face  558 L, namely the forward conveyance orientation or the rearward conveyance orientation ( FIG. 21 ), and there is barely any need to consider age-related deterioration such as abrasion, thereby enabling stable conveyance of the banknote bundle SB. 
     Moreover, a force due to a spring, not illustrated in the drawings, acts on the Scott-Russell section  530  so as to attempt to return the Scott-Russell section  530  to the horizontal orientation. Accordingly, the roller  536  of the Scott-Russell section  530  can be actively made to abut the lower face  558 L, enabling the forward conveyance orientation or the rearward conveyance orientation to be stably maintained. Moreover, the roller  536  of the Scott-Russell section  530  is actively caused to enter the cavity  561  or  562  due to the action of the spring, enabling the orientation to be reliably switched between the forward conveyance orientation and the rearward conveyance orientation when the direction of progress is switched. 
     According to the above configuration, in the bundle conveyance unit  503  of the sixth exemplary embodiment, the roller  536  positioned at the upper side of the swing shaft  435  of the Scott-Russell section  530  is made to abut the lower face  558 L of the upper guide plate  558 , or the upper end of the roller  536  is made to enter the cavity  561  or  562 . The Scott-Russell section  530  is moved toward the front and rear with the roller  536  abutting the lower face  558 L, thereby enabling the banknote bundle SB to be conveyed while maintaining the forward conveyance orientation or the rearward conveyance orientation. Moreover, the forward conveyance orientation and the rearward conveyance orientation can be changed by causing the roller  536  to enter the cavity  561  or  562  and switching the direction of progress. The bundle conveyance unit  503  is thereby capable of switching the conveyance direction of the banknote bundle SB to toward the front or toward the rear without providing a motive power source to the Scott-Russell section  530 , which moves in the front-rear direction. 
     7. Seventh Exemplary Embodiment 
     In a seventh exemplary embodiment, the banknote bundle SB is conveyed in the front-rear direction along a bundle conveyance path  603 Y by a bundle conveyance unit  603  instead of by the bundle conveyance unit  3  of the first exemplary embodiment. As illustrated in  FIG. 22A  and  FIG. 22B  that correspond to  FIG. 2A  and  FIG. 2B , the bundle conveyance unit  603  differs from the bundle conveyance unit  3  in the point that the upper conveyor belt  21  and the lower conveyor belt  24  are omitted, and a fixed conveyance guide  623  and a Scott-Russell mechanism  628  are provided instead of the fixed conveyance guide  23  and the Scott-Russell mechanism  28 . 
     The fixed conveyance guide  623  is configured similarly to the fixed conveyance guide  223  according to the third exemplary embodiment, and an upper face of the fixed conveyance guide  623  is formed with claw-guide grooves  623 D. The Scott-Russell mechanism  628  is configured by a Scott-Russell belt  631  and Scott-Russell plates  632 . The Scott-Russell belt  631  is configured similarly to the upper conveyor belts  21 , and is entrained around rollers respectively disposed in the vicinity of a rear end and in the vicinity of a front end of the Scott-Russell belt  631 . Similarly to the upper conveyor belts  21 , when the rollers are rotated by a predetermined motor (not illustrated in the drawings) under the control of the controller  4 , a lower face of the Scott-Russell belt  631  runs along the front-rear direction. In the following explanation, similarly to the upper conveyor belts  21 , the direction of travel of the lower face portion of the Scott-Russell belt  631  is taken as the direction of travel of the Scott-Russell belt  631 . 
     Each Scott-Russell plate  632  is formed in a plate shape that is thin in the front-rear direction and long in the vertical direction, and is provided so as to extend perpendicularly from the outside of an outer peripheral face of the Scott-Russell belt  631 , such that the plate faces face along the direction of progress, for example, such that the plate faces face toward the front and rear for a lower face portion of the Scott-Russell belt  631 . Accordingly, by running the Scott-Russell belt  631 , the Scott-Russell mechanism  628  is capable of moving the Scott-Russell plates  632  toward the front or toward the rear, particularly along the bundle conveyance path  603 Y formed at the lower side of the Scott-Russell belt  631 . 
     Moreover, when positioned at a lower side of the Scott-Russell belt  631 , a lower edge of each Scott-Russell plate  632  is caused to enter into the claw-guide grooves  22 D and  623 D respectively formed in the upper faces of the moving conveyance guide  22  and the fixed conveyance guide  623 . Accordingly, in a state in which the banknote bundle SB is placed at either the front side or the rear side of the Scott-Russell plate  632 , by driving the Scott-Russell belt  631  and moving the Scott-Russell plates  632  along the front-rear direction, the Scott-Russell mechanism  628  is capable of conveying the banknote bundle SB toward the front or toward the rear along the bundle conveyance path  603 Y. 
     Plural of the Scott-Russell plates  632  are disposed discretely on the outer peripheral face, around the peripheral direction of the Scott-Russell belt  631 . A peripheral direction spacing between the Scott-Russell plates  632  is longer than the front-rear direction length of the banknote bundle SB on the bundle conveyance path  603 Y. 
     In the above configuration, the bundle conveyance unit  603  is capable of conveying the banknote bundle SB toward the front or toward the rear with the Scott-Russell plates  632  by driving the Scott-Russell belt  631  of the Scott-Russell mechanism  628  toward the front or toward the rear. Moreover, the bundle conveyance unit  603  is capable of switching the conveyance direction of the banknote bundle SB simply by switching the run direction of the Scott-Russell belt  631 , since respective Scott-Russell plates  632  are positioned at the front and rear of the banknote bundle SB on the bundle conveyance path  603 Y. 
     Moreover, since plural of the Scott-Russell plates  632  are provided to the Scott-Russell belt  631 , there is no need for the bundle conveyance unit  603  to return the Scott-Russell plate  632  that was used to convey the banknote bundle SB to the rear when pay-out conveyance processing of the banknote bundle SB has ended, for example, since another of the Scott-Russell plates  632  can perform the pay-out conveyance processing for the next banknote bundle SB. 
     8. Other Exemplary Embodiments 
     Note that in the first exemplary embodiment described above, explanation has been given regarding a case in which the Scott-Russell body  31  is swingably supported by the support body  41 , and the Scott-Russell plate  32  is retracted from the bundle conveyance path  3 Y by swinging the Scott-Russell body  31 . However, the present disclosure is not limited thereto, and the Scott-Russell plate  32  may be retracted from the bundle conveyance path  3 Y by various methods, such as supporting the Scott-Russell body  31  by the support body  41  so that the Scott-Russell body  31  is capable of moving in the vertical direction, and retracting the Scott-Russell plate  32  from the bundle conveyance path  3 Y by moving the Scott-Russell body  31  upward, or the like. Similar also applies in the third exemplary embodiment. 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the left guide plate  51  and the right guide plate  52  are formed with the slide grooves  57 , and the posts  36  of the Scott-Russell section  30  are inserted through the slide grooves  57 . However, the present disclosure is not limited thereto, and, for example, the portions of the left guide plate  51  and the right guide plate  52  further to the upper side of the slide grooves  57  may be omitted, such that upper edges of the left guide plate  51  and the right guide plate  52  are shaped similarly to lower side portions of the slide grooves  57 , and the posts  36  may be made to run along the upper edges of the left guide plate  51  and the right guide plate  52 . In short, it is sufficient that an upward force can be applied to the posts  36  as appropriate according to the position of the Scott-Russell section  30  in the front-rear direction. Similar also applies in the third and the fourth exemplary embodiments. 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the inclined region  57 B and the separation region  57 C of the slide groove  57  are both formed in straight line shapes. However, the present disclosure is not limited thereto, and at least a portion thereof may be configured with a curved profile. Similar also applies in the third and the fourth exemplary embodiments. Moreover, there is no limitation to the groove width of the entire slide groove  57  being substantially uniform, and, for example, the groove width may be locally enlarged. Similarly also applies in the third and the fourth exemplary embodiments. 
     Moreover, in the second exemplary embodiment described above, explanation has been given regarding a case in which the posts  36  are disposed in front of and below the swing shafts  35  in the Scott-Russell body  131  ( FIG. 6A ). However, the present disclosure is not limited thereto, and, for example, the posts  36  may be disposed at the rear of and below of the swing shafts  35 . In short, it is sufficient that the posts  36  are at a position that is not directly below the swing shafts  35  when the Scott-Russell body  131  is in the conveyance-enabled orientation. 
     Moreover, in the second exemplary embodiment described above, explanation has been given regarding a case in which the slide groove  157  is provided with the lowering region  157 B and the pull-back region  157 C, such that the posts  36  are temporarily positioned substantially directly below the swing shafts  35  when the Scott-Russell body  131  is being transitioned from the conveyance-enabled orientation to the retracted orientation. However, the present disclosure is not limited thereto, and, for example, the lowering region  157 B and the pull-back region  157 C may be omitted, similarly to in the slide groove  57  of the first exemplary embodiment. In such cases, an orientation in which the Scott-Russell body  131  has been swung such that the front face  32 F of the Scott-Russell plate  32  faces upward may be employed as the retracted orientation. 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the upper conveyor belts  21  are provided in a range including the upper sides of the moving conveyance guide  22  and the fixed conveyance guide  23  ( FIG. 1 ,  FIG. 2 , etc.). However, the present disclosure is not limited thereto, and, for example, configuration may be made in which the upper conveyor belts  21  shortened in the front-rear direction are provided only at a portion facing the lower conveyor belts  24 , as in the fifth exemplary embodiment ( FIG. 16 ), or the upper conveyor belts  21  may be omitted altogether. Alternatively, both the upper conveyor belts  21  and the lower conveyor belts  24  may be omitted, as in the second and the fourth exemplary embodiments. This thereby enables the configuration of the bundle conveyance unit  3  and the like to be simplified. 
     Conversely, the third and the fourth exemplary embodiments may be provided with upper conveyor belts  21  and lower conveyor belts  24  similarly to in the first exemplary embodiment. Moreover, in the fifth and the sixth exemplary embodiments, the upper conveyor belts  421  may be extended toward the rear, similarly to the upper conveyor belts  21  of the first exemplary embodiment. Moreover, instead of the respective belts, plural rollers may be arranged and rotated, or an appropriate combination of both rollers and belts may be provided. This thereby enables stable conveyance of the banknote bundle SB, such as along the bundle conveyance path  203 Y. 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which two of the upper conveyor belts  21  are disposed side-by-side to the left and right in the bundle conveyance unit  3 . However, the present disclosure is not limited thereto, and one, or three or more, of the upper conveyor belts  21  may be provided in the bundle conveyance unit  3 . Similar applies to the lower conveyor belts  24 , and similar also applies in the fifth, sixth, and seventh exemplary embodiments. 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the claw-shaped portions  32 C are formed projecting out further downward than their surroundings at the lower edge of the Scott-Russell plate  32 , and the claw-guide grooves  22 D and  23 D are respectively formed in the upper faces of the moving conveyance guide  22  and the fixed conveyance guide  23 . However, the present disclosure is not limited thereto, and, for example, in cases in which a gap between the lower edge of the Scott-Russell plate  32  and the upper faces of the moving conveyance guide  22  and the fixed conveyance guide  23  is small, for example, the claw-shaped portions  32 C and the claw-guide grooves  22 D and  23 D may be omitted. Moreover, the number of the claw-shaped portions  32 C and the claw-guide grooves  22 D and  23 D disposed in the left-right direction is not limited to two, and one or three or more may be provided. Similar also applies in the second to the seventh exemplary embodiments. 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the Scott-Russell section  30  is configured by the support body  41  that moves along the slide shaft  53  and the rail  56  in the front-rear direction only, and the Scott-Russell body  31  that swings with respect to the support body. However, the present disclosure is not limited thereto, and, for example, configuration may be made in which a Scott-Russell section configured as a single body receives drive force from the moving section  50 , is moved in the front-rear direction so as to be swung or moved in the vertical direction according to the shape of the slide groove  57  etc., until a portion of the Scott-Russell plate  32  is in an orientation retracted from the bundle conveyance path  3 Y. Similar also applies in the third and the fourth exemplary embodiments. 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the moving section  50  is provided with the drive belt section  54 , and the belt  54 B is driven so as to move the Scott-Russell section  30  in the front-rear direction. However, the present disclosure is not limited thereto, and, for example, the moving section  50  may be provided with drive mechanisms of various configurations, for example a combination of a motor and worm gears etc., with this drive mechanism moving the Scott-Russell section  30  in the front-rear direction. Similar also applies in the second to the sixth exemplary embodiments. 
     Moreover, in the third exemplary embodiment described above, explanation has been given regarding a case in which the posts  236  are provided in the vicinity of the lower edge of the Scott-Russell plate  232 , and the left arm  233  and the right arm  234  are provided in the vicinity of the upper edge of the Scott-Russell plate  232 . However, the present disclosure is not limited thereto, and the posts  236 , the left arm  233 , and the right arm  234  may be provided at various locations of the Scott-Russell plate  232 . In such cases, the height of the slide grooves  257  formed in the left guide plate  251  and the right guide plate  252  should be adjusted to match to the height of the posts  236 . 
     Moreover, in the third exemplary embodiment described above, explanation has been given regarding a case in which the swing shafts  235  are provided in the vicinity of the front ends of the left arm  233  and the right arm  234 . However, the present disclosure is not limited thereto, and, for example, similarly to in the first exemplary embodiment, the swing shafts  235  may be provided almost directly above the posts  236 . In such cases, the left arm  233  and the right arm  234  may be shortened in the front-rear direction, or may be omitted. 
     Moreover, in the fourth exemplary embodiment described above, explanation has been given regarding a case in which the length of the Scott-Russell plate  332  in the vertical direction is extended to approximately twice that of the Scott-Russell plate  232  of the third exemplary embodiment, and the portion that abuts the banknote bundle SB differs depending on the conveyance direction of the banknote bundle SB. However, the present disclosure is not limited thereto, and, for example, the length of the Scott-Russell plate  332  in the vertical direction may be approximately the same as that of the Scott-Russell plate  232 , with a substantially constant location abutting the banknote bundle SB, irrespective of the conveyance direction of the banknote bundle SB. 
     In the fifth exemplary embodiment described above, explanation has been given regarding a case in which friction between the friction block  436  and the lower face  458 L of the upper guide plate  458  is utilized to set the orientation of the Scott-Russell section  430  to the forward conveyance orientation or the rearward conveyance orientation, and the Scott-Russell section  430  is moved toward the front or toward the rear while being maintained in this orientation. However, the present disclosure is not limited thereto, and various other forces may be utilized. 
     For example, as illustrated in  FIG. 23A  corresponding to  FIG. 16A , a Scott-Russell section  730  of a bundle conveyance unit  703  includes an elastic portion  736  that is capable of elastic deformation instead of the friction block  436 . Moreover, a lower face of an upper guide plate  758  is provided with multiple cavities  761 , similar to the cavities  561  and  562  of the sixth exemplary embodiment, each disposed at a comparatively short spacing. In the bundle conveyance unit  703 , when the Scott-Russell section  730  is moved in the front-rear direction, similarly to in the sixth exemplary embodiment, the elastic portion  736  is applied with force from side edges of the cavities  761 , and as illustrated in  FIG. 23B , the entire Scott-Russell section  730  is swung, and then the elastic portion  736  undergoes elastic deformation and springs back into the next cavity  761  in sequence, enabling the banknote bundle SB to be conveyed while maintaining the Scott-Russell section  730  in that orientation. Moreover, in the bundle conveyance unit  703  when the direction of progress of the Scott-Russell section  730  is switched, an upper end of the elastic portion  736  escapes into the cavity  761  and the entire Scott-Russell section  730  is swung in the opposite direction to hitherto, enabling the conveyance direction of the banknote bundle SB to be switched. 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the reject storage box  17  is disposed at the front side of the storage casing  10 , and the intake hole  17 H is placed in communication with the bundle conveyance path  3 Y by moving the moving conveyance guide  22  toward the rear. However, the present disclosure is not limited thereto, and, for example, in cases in which the storage unit  2  is assembled to the bundle conveyance unit  3  so as to be reversed in the front-rear direction, with the reject storage box  17  disposed at the rear side of the storage casing  10 , the intake hole  17 H may be placed in communication with the bundle conveyance path  3 Y by moving the moving conveyance guide  22  toward the front. Similar also applies in the second to the seventh exemplary embodiments. 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the fixed conveyance guide  23  is provided at the front side of the moving conveyance guide  22 , and the lower conveyor belts  24  are provided at the front side of the moving conveyance guide  22 . However, the present disclosure is not limited thereto, and, for example, the fixed conveyance guide  23  may be omitted, and the lower conveyor belts  24  may be extended toward the rear so as to reach the vicinity of the front end of the moving conveyance guide  22 . Similar also applies in the fourth to the sixth exemplary embodiments. Moreover, in the third and the fourth exemplary embodiments, a lower conveyor belt may be provided instead of the fixed conveyance guide  223 . 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the present disclosure is applied to the bundle conveyance unit  3  that conveys a banknote bundle configured by stacked banknotes as a medium in the banknote pay-out device  1  that pays out banknotes. However, the present disclosure is not limited thereto, and, for example, the present disclosure may be applied to a location that conveys a stacked medium in various devices handling paper sheet shaped media, such as cash vouchers, securities, various types of tickets, or postcards, in a stacked state. 
     Moreover, the present disclosure is not limited to the respective exemplary embodiments and the other exemplary embodiments described above. Namely, the present disclosure encompasses application to exemplary embodiments arrived at by appropriately combining each exemplary embodiment described above with part or all of other exemplary embodiments described above, and to exemplary embodiments arrived at by extracting a part thereof 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the bundle conveyance unit  3 , serving as a medium conveyance device, is configured by the moving conveyance guide  22  and the fixed conveyance guide  23  serving as a placement body, the Scott-Russell body  31  serving as a Scott-Russell body, the moving section  50  serving as a moving section, and the posts  36  and the slide grooves  57  serving as a conveyance state switching section. However, the present disclosure is not limited thereto, and the medium conveyance device may be configured by various other configurations of placement body, Scott-Russell body, moving section, and conveyance state switching section. 
     Moreover, in the first exemplary embodiment described above, explanation has been given regarding a case in which the banknote pay-out device  1 , serving as a medium transaction device, is configured by the stacking section  16  serving as a stacking section, the moving conveyance guide  22  and the fixed conveyance guide  23  serving as a placement body, the Scott-Russell body  31  serving as a Scott-Russell body, the moving section  50  serving as a moving section, and the posts  36  and the slide grooves  57  serving as a conveyance state switching section. However, the present disclosure is not limited thereto, and the medium transaction device may be configured by various other configurations of stacking section, placement body, Scott-Russell body, moving section, and conveyance state switching section. 
     INDUSTRIAL APPLICABILITY 
     The present disclosure may, for example, be employed in a banknote pay-out device that pays out banknote bundles of plural stacked banknotes according to user operation. 
     The disclosure of Japanese Patent Application No. 2015-009468 is incorporated in its entirety in the present specification by reference. 
     All cited documents, patent applications, and technical standards mentioned in the present specification are incorporated by reference in the present specification to the same extent as if the individual cited document, patent application, or technical standard was specifically and individually indicated to be incorporated by reference.