Patent Publication Number: US-11648787-B2

Title: Supply device, processing device, control method and program

Description:
The present application is based on, and claims priority from JP Application Serial Number 2020-091262, filed May 26, 2020, the disclosure of which is hereby incorporated by reference herein in its entirety. 
     BACKGROUND 
     1. Technical Field 
     The present disclosure relates to a supply device, a processing device, a control method, and a program, for example. 
     2. Related Art 
     JP-A-2006-021851 describes a supply device configured to supply a medium to a processing unit. The supply device includes an accommodating unit configured to accommodate a medium, and a blowing device configured to blow air onto the medium accommodated in the accommodating unit. The accommodating unit is configured to accommodate a plurality of the media in a state of being stacked therein. Dust is removed from the medium by the blowing device blowing air on the medium. 
     In the supply device described in JP-A-2006-021851, air is blown by the blowing device to a top medium on the plurality of media to be stacked. Therefore, while the dust is removed from the top medium of the plurality of media, the dust may be insufficiently removed from the other medium. 
     SUMMARY 
     A supply device for solving the above-described problems includes a supply device configured to supply a medium to a processing unit configured to perform processing on the medium, the supply device including an accommodating unit configured to accommodate a plurality of the media in a state of being stacked therein and a vibration imparting unit configured to contact ends of the plurality of media accommodated in the accommodating unit to impart vibration to the medium. 
     A processing device for solving the above-described problem includes the above-described supply device and the processing unit. 
     A control method for solving the above-described problems includes a control method for a supply device configured to supply a medium to a processing unit, the supply device including an accommodating unit configured to accommodate a plurality of the media in a state of being stacked therein and a vibration imparting unit configured to contact ends of the plurality of media accommodated in the accommodating unit to impart vibration to the medium, wherein the method includes imparting vibration to the medium by the vibration imparting unit when the medium is accommodated in the accommodating unit. 
     A program for solving the above-described problems includes a program for causing a control unit to execute control of a supply device configured to supply a medium to a processing unit, the supply device including an accommodating unit configured to accommodate a plurality of the media in a state of being stacked therein and a vibration imparting unit configured to contact ends of the plurality of media accommodated in the accommodating unit to impart vibration to the medium, wherein the program causes the vibration imparting unit to impart vibration to the medium when the medium is accommodated in the accommodating unit. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a front view schematically illustrating a processing device including a supply device according to a first embodiment. 
         FIG.  2    is a plan view of the processing device. 
         FIG.  3    is a cross-sectional view of a removal cassette. 
         FIG.  4    is a cross-sectional view of the removal cassette being cut at a different location than in  FIG.  3   . 
         FIG.  5    is a perspective view of the removal cassette. 
         FIG.  6    is a perspective view of the removal cassette viewed from a different angle than in  FIG.  5   . 
         FIG.  7    is a plan view of the removal cassette. 
         FIG.  8    is a perspective view of a first edge guide. 
         FIG.  9    is a perspective view of a second edge guide. 
         FIG.  10    is a perspective view of a third edge guide. 
         FIG.  11    is a perspective view of a first wall. 
         FIG.  12    is a cross-sectional view when a rotating body rotates in the state illustrated in  FIG.  3     
         FIG.  13    is a cross-sectional view when the rotating body rotates in the state illustrated in  FIG.  4     
         FIG.  14    is a flowchart illustrating an example of a first process. 
         FIG.  15    is a perspective view illustrating an accommodating cassette included in a supply device according to a second embodiment. 
         FIG.  16    is a cross-sectional view of the accommodating cassette. 
         FIG.  17    is a plan view of the accommodating cassette. 
         FIG.  18    is a flowchart illustrating an example of a second process. 
         FIG.  19    is a perspective view illustrating a holding cassette included in a supply device according to a third embodiment. 
         FIG.  20    is a perspective view of the state illustrated in  FIG.  19    with a first arm and a second arm being displaced downward. 
         FIG.  21    is a perspective view illustrating a holding cassette included in a supply device according to a fourth embodiment. 
         FIG.  22    is a perspective view of the state illustrated in  FIG.  21    with a holding unit being displaced downward. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, an embodiment of a supply device will be described with reference to the accompanying drawings. 
     First Embodiment 
     A supply device of a first embodiment configures a processing device. The processing device includes, for example, an ink jet-type printer that prints an image such as characters and photographs on a medium such as a sheet by discharging ink, which is an example of a liquid. 
     As illustrated in  FIG.  1   , a processing device  11  includes a housing  12 . The processing device  11  includes a processing unit  13 , a support portion  14 , a transport unit  15 , a transport path  16 , and a processing control unit  17 . The processing device  11  of the first embodiment further includes a supply device  18 . 
     The housing  12  accommodates various configurations of the processing device  11 . The housing  12  has a loading surface  19 . In the first embodiment, the loading surface  19  configures an upper surface of the housing  12 . A medium  99  is processed to be loaded on the loading surface  19 . 
     The processing unit  13  is configured to perform processing on the medium  99 . The processing unit  13  of the first embodiment performs processing on the medium  99  by performing printing on the medium  99 . The processing unit  13  of the first embodiment includes a head  21  and a holder  22 . 
     The head  21  is held by the holder  22 . The head  21  has one or more nozzles  23 . The head  21  performs printing onto the medium  99  by discharging liquid from the nozzles  23 . The head  21  of the first embodiment is a line head capable of discharging liquid simultaneously across the width of the medium  99 . The head  21  may be a serial head that performs scanning with respect to the medium  99 . 
     The support portion  14  is located at a position facing the processing unit  13 . The support portion  14  supports the medium  99 . The processing unit  13  and the support portion  14  are located so as to sandwich a portion of the transport path  16 . The processing unit  13  performs processing on the medium  99  supported by the support portion  14 . 
     The support portion  14  of the first embodiment has a pair of rollers  25  and a belt  26 . The belt  26  is wound onto a pair of the rollers  25 . Rotation of the rollers  25  causes the belt  26  to orbit along the circumference of the rollers  25 . The support portion  14  supports the medium  99  by the outer circumferential surface of the belt  26 . The support portion  14  of the first embodiment supports the medium  99  and transports the medium  99 . The support portion  14  may be configured as a support table for simply supporting the medium  99  without transporting the medium  99 . 
     The transport unit  15  is configured to transport the medium  99 . In the first embodiment, the transport unit  15  transports the medium  99  along the transport path  16 . The transport unit  15  has one or more transport rollers  27 , for example. The transport rollers  27  are located along the transport path  16 . The transport rollers  27  transport the medium  99  by rotating in contact with the medium  99 . 
     The transport path  16  is a path where the medium  99  is transported. The transport path  16  of the first embodiment is a path through which the transport unit  15  transports the medium  99 . The transport path  16  of the first embodiment extends within the housing  12  as illustrated by the two-dot chain line in  FIG.  1   . In the first embodiment, the transport path  16  includes a supply path  31 , an ejection path  32 , a switchback path  33 , and an inversion path  34 . 
     The supply path  31  is a path to which the medium  99  is supplied to the processing unit  13 . As such, the supply path  31  extends from the supply device  18  toward the processing unit  13 . 
     The ejection path  32  is a path through which the processed medium  99  is ejected. In the first embodiment, the ejection path  32  is a path through which the medium  99  processed by the processing unit  13  is ejected to the loading surface  19 . The ejection path  32  extends from the processing unit  13  toward the upper portion of the loading surface  19 . The medium  99  transported through the ejection path  32  is ejected out of the housing  12 . The ejected medium  99  falls to be loaded on the loading surface  19 . 
     The switchback path  33  is a path where the medium  99  is switched back. In the first embodiment, for example, the medium  99  printed on one side thereof is transported through the switchback path  33 . When the medium  99  is switched back in the switchback path  33 , the transport orientation of the medium  99  is reversed. In the first embodiment, the switchback path  33  extends from the ejection path  32  and extends along the ejection path  32 . The termination of the switchback path  33  fits within the housing  12 , unlike the ejection path  32 . 
     The inversion path  34  is a path where the posture of the medium  99  is inverted. In the first embodiment, the medium  99  transported through the switchback path  33  is transported. The inversion path  34  branches from the switchback path  33  and extends toward the supply path  31 . The inversion path  34  extends through the upper portion of the processing unit  13 . By transporting the medium  99  through the inversion path  34 , the posture of the medium  99  is reversed. In the first embodiment, when the medium  99  is transported through the inversion path  34 , the posture of the medium  99  is reversed vertically. 
     The switchback path  33  and the inversion path  34  are used, for example, when performing printing on both sides of the medium  99 . By being transported through the switchback path  33  and the inversion path  34 , the medium  99  is transported toward the processing unit  13  again with the printed surface facing the support portion  14 . In other words, the medium  99  is transported with the unprinted surface thereof facing the processing unit  13 . This causes the processing device  11  to perform printing on both sides of the medium  99 . 
     The processing control unit  17  is a control unit that controls various configurations of the processing device  11 . The processing control unit  17  can be configured as a circuit including a: one or more processors that execute various processing according to a computer program, one or more dedicated hardware circuits such as an application specific integrated circuit that executes at least a part of various processing, or y: a combination thereof. The processor includes a CPU and a memory such as a RAM and a ROM. The memory stores a program code or a command configured to cause the CPU to execute the processing. The memory, or a computer readable medium includes any medium accessible by a general purpose or special purpose computer. 
     The supply device  18  is a device that supplies the medium  99  to the processing unit  13 . In the first embodiment, the supply device  18  is embedded in the processing device  11 , but may also be externally attached to the processing device  11 . In the first embodiment, the supply device  18  is located below the processing device  11 . The supply device  18  is located below the processing unit  13 , for example. 
     The supply device  18  includes a housing  41 , a cassette  42 , a pickup roller  43 , a separation roller  44 , a clamping member  45 , a delivery path  46 , a sensor  47 , and a supply control unit  48 . 
     The housing  41  is configured so that the cassette  42  can be mounted thereto. In the first embodiment, the housing  41  of the supply device  18  is integrally configured with the housing  12  of the processing device  11 , but may also be configured as a separate body. 
     One or more cassettes  42  are provided. In the first embodiment, four cassettes  42  are provided. The four cassettes  42  are provided so as to be stacked vertically. 
     The cassettes  42  is configured to accommodate the medium  99 . Specifically, the cassettes  42  each accommodate a plurality of the media  99  in a stacked state. In this regard, the cassettes  42  are an accommodating unit that accommodates the medium  99 . The medium  99  accommodated in the cassettes  42  is, for example, sheet-like and rectangular. The medium  99  is not limited to paper, and may be a fabric or a plastic film. The cassettes  42  of the first embodiment each accommodates the plurality of media  99  in landscape orientation. 
     As illustrated in  FIG.  2   , in the first embodiment, the cassettes  42  vertically overlaps the processing unit  13 . The “vertically” indicates a direction orthogonal to an installation surface at which the processing device  11  is installed, for example. The cassettes  42  are detachable relative to the housing  41 . The cassettes  42  accommodating the medium  99  are mounted to the housing  41 , whereby the supply device  18  can supply the medium  99  toward the processing unit  13 . A detailed configuration of the cassettes  42  will be described later. 
     As illustrated in  FIG.  1   , the pickup roller  43  is provided in the housing  41 . The pickup roller  43  is a roller that picks up the medium  99  accommodated in the cassettes  42 . As such, the pickup roller  43  is provided for each cassette  42 . The pickup roller  43  contacts the top medium  99  of the plurality of media  99  accommodated in the cassette  42 . At this time, the pickup roller  43  clamps the medium  99  from above. In this regard, the pickup roller  43  is a clamping unit that clamps the medium  99 . The pickup roller  43  rotates while clamping the medium  99 , to feed the top medium  99 . 
     The separation roller  44  is provided in the housing  41 . The separation roller  44  is a roller that separates the medium  99  fed by the pickup roller  43  one by one. As such, the pickup roller  43  is provided for each cassette  42 . The separation roller  44  separates the medium  99  fed by the pickup roller  43  one by one, for example, by the friction force thereof. 
     The clamping member  45  is provided in the housing  41 . The clamping member  45  is a member for clamping the medium  99  accommodated in the cassette  42 . The clamping member  45  clamps the medium  99  accommodated in the cassette  42  from above. In this regard, the clamping member  45  is a clamping unit that clamps the medium  99 . The clamping member  45  clamps the medium  99  to hold the medium  99  in the cassette  42 . 
     The clamping member  45  is configured to be vertically displaced. As a result, the clamping member  45  rises and falls. The clamping member  45  contacts, by being displaced downward, the top medium  99  of the medium  99  accommodated in the cassette  42 . At this time, the clamping member  45  clamps the medium  99 . The clamping member  45  is displaced upward, thereby preventing contact with the medium  99  accommodated in the cassette  42 . 
     The clamping member  45  is, for example, a plate-like member. The clamping member  45  is formed of a material having a relatively small coefficient of friction with respect to the medium  99 . Specifically, the coefficient of friction of the clamping member  45  with respect to the medium  99  is smaller than the coefficient of friction of the pickup roller  43  with respect to the medium  99 . In the first embodiment, the clamping member  45  is formed of POM. The POM is a polyacetal resin. As a result, the clamping member  45  can clamp the medium  99  while reducing the load applied to the medium  99 . In addition, even when the clamping member  45  clamps the medium  99 , the pickup roller  43  can feed the medium  99 . 
     As illustrated in  FIGS.  3  and  4   , the clamping member  45  has a shaft  49 . The clamping member  45  rotates about the shaft  49 . The shaft  49  is provided to one end of the clamping member  45 . The clamping member  45  is attached to the housing  41  by the shaft  49 . 
     When the clamping member  45  rotates about the shaft  49 , the other end of the clamping member  45  is vertically displaced, i.e., rises and falls. In this manner, the clamping member  45  rises and falls by rotating about the shaft  49 . As a result, the other end of the clamping member  45  contacts the medium  99 . The clamping member  45  may be configured to move upward and downward by sliding vertically, without being limited to the rotation. 
     As illustrated in  FIG.  1   , the delivery path  46  is a path through which the medium  99  is fed by the pickup roller  43  and the separation roller  44 . As such, the delivery path  46  is provided for each cassette  42 . The delivery path  46  is provided in the housing  41 . One delivery path  46  connects another delivery path  46  corresponding to the cassette  42  adjacent to the cassette  42  corresponding the one delivery path  46 . That is, each of a plurality of the delivery paths  46  is coupled to one another. 
     Among the plurality of delivery paths  46 , the delivery path  46  corresponding to the top cassette  42  is coupled to the supply path  31 . As such, the medium  99  accommodated in the cassette  42  is transported to the transport path  16  through the delivery path  46 . Further, since each of the delivery paths  46  is coupled to one another, the medium  99  can be fed between the plurality of cassettes  42 . For example, the medium  99  accommodated by the bottommost cassette  42  may be fed through the delivery path  46  toward the other cassette  42 . For example, the medium  99  accommodated by the top cassette  42  may be fed through the delivery path  46  toward the other cassette  42 . 
     The sensor  47  is configured to detect that the cassette  42  has been mounted to the housing  41 . In this regard, the sensor  47  is a detecting unit that detects that the cassette  42  has been mounted to the housing  41 . The sensor  47  is an optical sensor, for example. The sensor  47  of the first embodiment sends a signal to the supply control unit  48  when the cassette  42  is mounted to the housing  41 . 
     The supply control unit  48  is a control unit that controls various configurations of the supply device  18 . The supply control unit  48  communicates with the processing control unit  17 . As with the processing control unit  17 , the supply control unit  48  can be configured as a circuit including a: one or more processors that execute various processing according to a computer program, one or more dedicated hardware circuits such as an application specific integrated circuit that executes at least a part of various processing, or y: a combination thereof. The processor includes a CPU and a memory such as a RAM and a ROM. The memory stores a program code or a command configured to cause the CPU to execute the processing. The memory, or a computer readable medium includes any medium accessible by a general purpose or special purpose computer. 
     Next, the cassettes  42  will be described in detail. The cassettes  42  includes a removal cassette  51 . In the first embodiment, the cassettes  42  includes one or more removal cassettes  51  and one or more normal cassettes  52 . That is, the accommodating unit corresponding to the cassettes  42  includes a first accommodating unit that is the removal cassette  51  and a second accommodating unit that is the normal cassette  52 . 
     In the first embodiment, one removal cassette  51  is provided, and three normal cassettes  52  are provided. In the supply device  18 , the one removal cassette  51  and the three normal cassettes  52  are arranged to be stacked vertically. In the first embodiment, the removal cassette  51  is located below the normal cassettes  52 . Thus, the removal cassette  51  is located at the bottommost row of the plurality of cassettes  42 . 
     Next, the configuration of the removal cassette  51  will be described in detail. The removal cassette  51  is different from the normal cassette  52  in that the removal cassette  51  includes a configuration that imparts vibration to the accommodated medium  99 , and other configurations are the same. The configuration that imparts vibration to the medium  99  is, for example, a vibration imparting unit described below. Accordingly, configurations other than the configuration that imparts vibration to the medium  99  are also included in the removal cassette  51  as well as the normal cassette  52 . 
     As illustrated in  FIGS.  3 ,  4 ,  5 ,  6  and  7   , the removal cassette  51  has an accommodating body  53 , a hopper  54 , an ultrasonic element  55 , a lifting member  56 , an edge guide  57 , and a rotating body  58 . 
     The accommodating body  53  is a case that accommodates the medium  99 . The accommodating body  53  has a first wall  61 , a second wall  62 , a third wall  63 , a fourth wall  64 , and a bottom wall  65 . 
     The first wall  61 , the second wall  62 , the third wall  63 , and the fourth wall  64  extend from the bottom wall  65 . The first wall  61 , the second wall  62 , the third wall  63 , and the fourth wall  64  are located so as to surround the medium  99  accommodated in the accommodating body  53 . 
     The first wall  61  faces the second wall  62 . The first wall  61  interfaces with the third wall  63  and the fourth wall  64 . In the first embodiment, the first wall  61  faces a tip of the medium  99  accommodated in the accommodating body  53 . The tip of the medium  99  is a leading end thereof when the medium  99  is fed out. 
     The first wall  61  has a first accommodation port  66  that accommodates the rotating body  58 . The first accommodation port  66  is an accommodation port included in the first wall  61 . The accommodation port is an opening that accommodates the rotating body  58 . The first accommodating port  66  of the first embodiment passes through the first wall  61 . 
     The second wall  62  faces the first wall  61 . The second wall  62  interfaces with the third wall  63  and the fourth wall  64 . In the first embodiment, the second wall  62  faces a back end of the medium  99  accommodated in the accommodating body  53 . The back end of the medium  99  is an end opposite the tip. 
     The third wall  63  faces the fourth wall  64 . The third wall  63  interfaces with the first wall  61  and the second wall  62 . In the first embodiment, the third wall  63  faces a side end of the medium  99  accommodated in the accommodating body  53 . The side end of the medium  99  is a different end than the tip and the back end. 
     The fourth wall  64  faces the third wall  63 . The fourth wall  64  interfaces with the first wall  61  and the second wall  62 . In the first embodiment, the fourth wall  64  faces the side end of the medium  99  accommodated in the accommodating body  53 . The side end of the medium  99  to which the fourth wall  64  faces is an end opposite to the side end of the medium  99  with which the third wall  63  faces. 
     The bottom wall  65  is a wall that configure the bottom of the accommodating body  53 . A groove  67  is provided at the bottom wall  65 . The groove  67  extends from the second wall  62  toward the first wall  61 . 
     In the first embodiment, the medium  99  accommodated in the removal cassette  51  is fed out from the second wall  62  in a direction toward the first wall  61 . In the first embodiment, the removal cassette  51  is mounted to the housing  41  by moving in a direction from the third wall  63  toward the fourth wall  64 . Conversely, the removal cassette  51  is removed from the housing  41  by moving in a direction from the fourth wall  64  toward the third wall  63 . 
     The hopper  54  is provided in the accommodating body  53 . The hopper  54  is provided, for example, in a flat plate shape. The hopper  54  supports, from below, the medium  99  accommodated by the accommodating body  53 . In other words, the medium  99  is placed at the hopper  54 . 
     The hopper  54  is vertically displaced by the lifting member  56 . That is, the hopper  54  rises and falls. The hopper  54  is displaced between a position along the bottom wall  65  and a position that is pushed upward by the lifting member  56 . 
     The hopper  54  is located at the position that is pushed upward by the lifting member  56 . When the hopper  54  is pushed up by the lifting member  56 , the medium  99  placed at the hopper  54  is pushed upward. As a result, the medium  99  placed at the hopper  54  is pressed against the pickup roller  43 . When the clamping member  45  is displaced downward, the medium  99  placed at the hopper  54  is also pressed against the clamping member  45 . The pickup roller  43  and the clamping member  45  contact the medium  99  at a position where the pickup roller  43  and the clamping member  45  overlap the hopper  54  when the removal cassette  51  is viewed in plan view. 
     The hopper  54  is linked to the attachment and detachment of the cassette  42 , for example. The hopper  54  is displaced into the pushed-up position by mounting the removal cassette  51  to the housing  41 . That is, when the removal cassette  51  is mounted to the housing  41 , the lifting member  56  pushes up the hopper  54 . The hopper  54  is displaced to a position along the bottom wall  65  by removing the removal cassette  51  from the housing  41 . The hopper  54  may be configured to move upward and downward at a desired timing, without being linked to the attachment and detachment of the cassette  42 . 
     The hopper  54  has an upper surface  71 , a tip portion  72 , a back end portion  73 , and notches  74 . 
     The upper surface  71  is a surface at which the medium  99  is placed. In this regard, the upper surface  71  is a placement surface at which the medium  99  is placed. The upper surface  71  is located above the bottom wall  65 . 
     The tip portion  72  is a portion where the medium  99  is pressed against the pickup roller  43  by the hopper  54  being pushed up onto the lifting member  56 . As such, the tip portion  72  is a portion located below the pickup roller  43  in the hopper  54 . The tip portion  72  is closer to the first wall  61  than the back end portion  73 . That is, the distance between the tip portion  72  and the first wall  61  is shorter than the distance between the back end portion  73  and the first wall  61 . 
     The back end portion  73  is a portion that is an end opposite to the tip portion  72 . As such, the back end portion  73  is closer to the second wall  62  than the tip portion  72 . That is, the distance between the back end portion  73  and the second wall  62  is shorter than the distance between the tip portion  72  and the second wall  62 . 
     The back end portion  73  is attached to the bottom wall  65 . The hopper  54  is configured to rotate about the back end portion  73  as a fulcrum. The rotation of the hopper  54  about the back end portion  73  displaces the tip portion  72  vertically. As a result, the medium  99  placed at the hopper  54  is pushed up. The hopper  54  is in a posture of extending upward from the back end portion  73  to the tip portion  72  while pushing up the medium  99 . 
     A notch  74  is provided by cutting out a portion of the hopper  54 . The notch  74  is provided so as to cut out a portion corresponding to the edge guide  57 . Therefore, the notch  74  is provided so as to correspond to the edge guide  57 . 
     One or more notches  74  are provided. In the first embodiment, three notches  74  are provided. Thus, in the first embodiment, the notches  74  includes a first notch  75 , a second notch  76 , and a third notch  77 . 
     The first notch  75  and the second notch  76  are provided so as to cut out both side ends of the hopper  54 . Both side ends of the hopper  54  are two ends, excluding the tip and the back end. Both side ends of the hopper  54  include a side end facing the third wall  63  and a side end facing the fourth wall  64 . 
     The first notch  75  and the second notch  76  are provided so as to cut out a portion between the tip portion  72  and the back end portion  73 . The first notch  75  and the second notch  76  cause the hopper  54  to have a shape of H when the hopper  54  is viewed from above. 
     The third notch  77  is provided to cut out the back end portion  73 . The third notch  77  is provided to cut out a central portion of the back end portion  73 . The central portion of the back end portion  73  is a central portion between the third wall  63  and the fourth wall  64  at the back end portion  73 . 
     The ultrasonic element  55  is an element that operates to generate ultrasonic waves. The ultrasonic element  55  operates, for example, by applying a voltage. The ultrasonic element  55  is provided in the hopper  54 . The ultrasonic element  55  is provided to the upper surface  71  of the hopper  54 . The ultrasonic element  55  is provided at the tip portion  72 . The ultrasonic element  55  imparts vibration to the medium  99  placed at the hopper  54  by generating ultrasonic waves. In the first embodiment, in addition to the vibration imparting unit described below, the ultrasonic element  55  is provided only in the removal cassette  51  and is not provided in the normal cassette  52 . The ultrasonic element  55  operates, for example, when the vibration imparting unit imparts vibration to the medium  99 . 
     The lifting member  56  is a member that raises and lowers the hopper  54 . The lifting member  56  is provided below the hopper  54 . One end of the lifting member  56  is attached to the hopper  54 , and the other end opposite to the one end is attached to the bottom wall  65 . The lifting member  56  is configured to be rotatable about the other end thereof as a fulcrum. As a result of the lifting member  56  rotating about the other end thereof as a fulcrum, the one end of the lifting member  56  is vertically displaced. As a result, the hopper  54  is vertically displaced, i.e., rises and falls. 
     The lifting member  56  may vibrate with the hopper  54  being pushed up. In this case, the vibration of the lifting member  56  causes the hopper  54  to vibrate. This imparts vibration to the medium  99  placed at the hopper  54 . The lifting member  56  may vibrate, for example, when the vibration imparting unit described below imparts vibration to the medium  99 . 
     The edge guide  57  is a member that contacts the plurality of media  99  to align the position of the plurality of media  99 . The edge guide  57  contacts the end of the plurality of media  99  placed at the hopper  54  to align the position of the end of the medium  99  placed at the hopper  54 . In this regard, the edge guide  57  is an alignment unit that aligns the medium  99 . 
     One or more edge guides  57  are provided. In the first embodiment, three edge guides  57  are provided. Thus, in the first embodiment, the edge guides  57  includes a first edge guide  81 , a second edge guide  82 , and a third edge guide  83 . 
     The first edge guide  81  is provided to the bottom wall  65 . The first edge guide  81  is configured to be movable over the bottom wall  65 . The first edge guide  81  is movable in a direction from the third wall  63  toward the fourth wall  64  and a direction from the fourth wall  64  toward the third wall  63 . 
     The first edge guide  81  is an edge guide  57  that contacts the side end of the medium  99  placed at the hopper  54 . The first edge guide  81  contacts the side end of the medium  99  by moving closer to the fourth wall  64 . The first edge guide  81  moves closer to the fourth wall  64 , thereby entering the first notch  75 . In this regard, the first edge guide  81  corresponds to the first notch  75 . 
     As illustrated in  FIG.  8   , the first edge guide  81  has a second accommodation port  84  that accommodates the rotating body  58 . The second accommodation port  84  is an accommodation port included in the first edge guide  81 . The second accommodation port  84  faces inward of the accommodating body  53 . In other words, the second accommodation port  84  faces the fourth wall  64 . 
     As illustrated in  FIGS.  3 ,  4 ,  5 ,  6 , and  7   , the second edge guide  82  is provided to the bottom wall  65 . The second edge guide  82  is configured to be movable over the bottom wall  65 . The second edge guide  82  is movable in a direction from the third wall  63  toward the fourth wall  64  and a direction from the fourth wall  64  toward the third wall  63 . 
     The second edge guide  82  is an edge guide  57  that contacts the side end of the medium  99  placed at the hopper  54 . The second edge guide  82  moves closer to the third wall  63  so as to contact a side end that is opposite to the side end of the medium  99  with which the first edge guide  81  comes into contact. The second edge guide  82  moves closer to the third wall  63 , thereby entering the second notch  76 . In this regard, the second edge guide  82  corresponds to the second notch  76 . 
     In the first embodiment, the second edge guide  82  is linked to first edge guide  81 . In other words, the first edge guide  81  and the second edge guide  82  are linked to each other. For example, when the first edge guide  81  moves closer to the third wall  63 , the second edge guide  82  moves closer to the fourth wall  64 . At this time, the distance between the first edge guide  81  and the second edge guide  82  is increased. For example, when the first edge guide  81  moves closer to the fourth wall  64 , the second edge guide  82  moves closer to the third wall  63 . At this time, the distance between the first edge guide  81  and the second edge guide  82  is shortened. As a result, the medium  99  placed at the hopper  54  is sandwiched between the first edge guide  81  and the second edge guide  82 . By bringing the first edge guide  81  and the second edge guide  82  into contact with both side ends of the medium  99 , the positions of both side ends of the medium  99  are aligned. 
     As illustrated in  FIG.  9   , the second edge guide  82  has a third accommodation port  85  that accommodates the rotating body  58 . The third accommodation port  85  is an accommodation port included in the second edge guide  82 . The third accommodation port  85  faces inward of the accommodating body  53 . In other words, the third accommodation port  85  faces the third wall  63 . 
     As illustrated in  FIGS.  3 ,  4 ,  5 ,  6 , and  7   , the third edge guide  83  is provided to the bottom wall  65 . The third edge guide  83  is configured to be movable over the bottom wall  65 . In the first embodiment, the third edge guide  83  is provided so as to fit in the groove  67 . The third edge guide  83  moves along the groove  67  over the bottom wall  65 . That is, the groove  67  is a path of the third edge guide  83 . The third edge guide  83  is movable along the groove  67  in a direction from the first wall  61  toward the second wall  62  and a direction from the second wall  62  toward the first wall  61 . 
     The third edge guide  83  is an edge guide  57  that moves to come into contact with the back end of the medium  99  placed at the hopper  54 . The third edge guide  83  moves closer to the first wall  61  to contact the back end of the medium  99 . The third edge guide  83  moves closer to the first wall  61 , thereby entering the third notch  77 . In this regard, the third edge guide  83  corresponds to the third notch  77 . 
     The third edge guide  83  contacts the back end of the medium  99  placed at the hopper  54  to receive the load of the medium  99 . With the hopper  54  pushing up the medium  99 , the medium  99  placed at the hopper  54  slides down on the hopper  54  from the tip portion  72  toward the back end portion  73  by the action of gravity. As a result, the medium  99  placed at the hopper  54  hits the third edge guide  83 . At this time, the third edge guide  83  receives the load of the medium  99 . Since the third edge guide  83  receives the load of the medium  99 , the position of the back end of the medium  99  is aligned by the third edge guide  83 , and the position of the tip of the medium  99  is aligned. As described above, the medium  99  is aligned by the first edge guide  81 , the second edge guide  82 , and the third edge guide  83 . 
     As illustrated in  FIG.  10   , the third edge guide  83  has a fourth accommodation port  86  that accommodates the rotating body  58 . The fourth accommodation port  86  is an accommodation port included in the third edge guide  83 . The fourth accommodation port  86  faces the first wall  61 . 
     The edge guides  57  are operated by a user, for example. The user aligns the medium  99  by manipulating the edge guides  57  such that the edge guides  57  contact the ends of the medium  99  when the medium  99  is set in the accommodating body  53 . That is, in the first embodiment, the medium  99  is manually aligned. The edge guides  57  may operate by being controlled by the supply control unit  48 . That is, the medium  99  may be automatically aligned. 
     As illustrated in  FIGS.  7 ,  8 ,  9 ,  10 , and  11   , the rotating body  58  is a rotating member. One or more rotating bodies  58  are provided. In the first embodiment, four rotating bodies  58  are provided. Thus, in the first embodiment, the rotating bodies  58  includes a first rotating body  91 , a second rotating body  92 , a third rotating body  93 , and a fourth rotating body  94 . 
     The first rotating body  91 , the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  are each accommodated in the four respective accommodation ports. Each of the first rotating body  91 , the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  contacts respective different ends of the medium  99 . 
     The first rotating body  91 , the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  are provided so as to be vertically displaced, i.e., move upward and downward. The first rotating body  91 , the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  are each provided so as to move upward and downward within the respective accommodation port. The first rotating body  91 , the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  move upward and downward while rotating. 
     The first rotating body  91  is a rotating body  58  accommodated in the first accommodation port  66 . As such, the first rotating body  91  is provided to the first wall  61 . The first rotating body  91  is rotated to contact the plurality of media  99  placed at the hopper  54 . The first rotating body  91  contacts the tip of the medium  99 , for example, by rotating with the hopper  54  pushing up the medium  99 . When the hopper  54  is viewed in plan view, the first rotating body  91  contacts the tip of the medium  99  that pops out of the tip portion  72  of the hopper  54 . In other words, when the hopper  54  is viewed in plan view, the first rotating body  91  contacts a portion of the tip of the medium  99  that does not overlap the hopper  54 . 
     The second rotating body  92  is a rotating body  58  accommodated in the second accommodation port  84 . Thus, the second rotating body  92  is provided to the first edge guide  81 . The second rotating body  92  moves with the second edge guide  82 . 
     The second rotating body  92  is rotated to contact the plurality of media  99  placed at the hopper  54 . The second rotating body  92  contacts the side end of the medium  99 , for example, by rotating with the second edge guide  82  contacting the side end of the medium  99 . When the hopper  54  is viewed in plan view, the second rotating body  92  contacts a portion of the medium  99  corresponding to the first notch  75 . In other words, when the hopper  54  is viewed in plan view, the second rotating body  92  contacts a portion of the side end of the medium  99  that does not overlap the hopper  54 . 
     The third rotating body  93  is a rotating body  58  accommodated in the third accommodation port  85 . Therefore, the third rotating body  93  is provided to the second edge guide  82 . The third rotating body  93  moves with the third edge guide  83 . 
     The third rotating body  93  is rotated to contact the plurality of media  99  placed at the hopper  54 . The third rotating body  93  contacts the side end, which is opposite to the side end of the medium  99  with which the second rotating body  92  comes into contact, for example, by rotating with the third edge guide  83  contacting the side end of the medium  99 . When the hopper  54  is viewed in plan view, the third rotating body  93  contacts a portion of the medium  99  corresponding to the second notch  76 . In other words, when the hopper  54  is viewed in plan view, the third rotating body  93  contacts a portion of the side end of the medium  99  that does not overlap the hopper  54 . 
     The fourth rotating body  94  is a rotating body  58  accommodated in the fourth accommodation port  86 . Thus, the fourth rotating body  94  is provided to the third edge guide  83 . The fourth rotating body  94  moves with the third edge guide  83 . 
     The fourth rotating body  94  is rotated to contact the plurality of media  99  placed at the hopper  54 . The fourth rotating body  94  contacts the back end of the medium  99 , for example, by rotating with the third edge guide  83  contacting the back end of the medium  99 . When the hopper  54  is viewed in plan view, the fourth rotating body  94  contacts a portion of the medium  99  corresponding to the third notch  77 . In other words, when the hopper  54  is viewed in plan view, the fourth rotating body  94  contacts a portion of the back end of the medium  99  that does not overlap the hopper  54 . 
     The first rotating body  91 , the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  have different sizes, while each has a similar configuration. Thus, the configuration of the first rotating body  91 , the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  will be described collectively as the rotating bodies  58 . 
     As illustrated in  FIGS.  3  and  4   , each of the rotating bodies  58  includes a rotating member  95  and a rotary shaft  96 . The rotating member  95  rotates about the rotary shaft  96 . The rotating member  95  has a vane  97 . The vane  97  is formed from a material having elasticity such as rubber, elastomer, etc. The vane  97  extends outwardly in the rotating member  95 . That is, the vane  97  extends radially around the rotary shaft  96 . In other words, the vane  97  may be configured by a member configured of a material having elasticity, with a plurality of elongated members being arranged such that one end thereof is fixed to the rotary shaft  96  and the other end is located on the circumference of the circle centered on the rotary shaft  96 . 
     The rotary shaft  96  extends in a direction along the upper surface  71  of the hopper  54 . In particular, the rotary shaft  96  of the second rotating body  92  and the rotary shaft  96  of the third rotating body  93  extend in a direction along the upper surface  71  with the hopper  54  being pushed up. 
     As illustrated in  FIGS.  12  and  13   , the rotation of the rotating member  95  about the rotary shaft  96  causes the vane  97  to rotate about the rotary shaft  96 . The vane  97  is rotated to spin out of the accommodation port. In this manner, the vane  97  contacts the plurality of media  99  placed at the hopper  54 . At this time, the vane  97  contacts the end of the medium  99 . In other words, the vane  97  of the first rotating body  91  contacts the tip of the medium  99 . The vane  97  of the second rotating body  92  contacts the side end of the medium  99 . The vane  97  of the third rotating body  93  contacts the side end of the medium  99 . The vane  97  of the fourth rotating body  94  contacts the back end of the medium  99 . 
     The vane  97  is in contact with the end of the medium  99  so as to strike the end of the medium  99 . When the vane  97  contacts the end of the medium  99 , the end of the medium  99  vibrates. This imparts vibration to the medium  99 . In the first embodiment, the vane  97  contacts the end of the medium  99  so as to move in a direction orthogonal to the upper surface  71 . Thus, vibration in a direction orthogonal to the upper surface  71  is imparted to the end of the medium  99 . More specifically, vibration in a direction orthogonal to the surface of the medium  99  is imparted to the end of the medium  99 . Thus, in the first embodiment, the rotating bodies  58  function as vibration imparting units that impart vibration to the medium  99 . In the first embodiment, the four rotating bodies  58  impart vibration to the tip, the back end, and the both side ends of the medium  99 . 
     The vane  97  contacts the medium  99  so as to lift up the medium downward to upward. In other words, the rotating member  95  rotates so that the vane  97  comes into contact with the medium  99  from below. In the first embodiment, the first rotating body  91  rotates in a clockwise direction in  FIG.  13   . The second rotating body  92  rotates in a clockwise direction in  FIG.  12   . The third rotating body  93  rotates in a counterclockwise direction in  FIG.  12   . The fourth rotating body  94  rotates in a counterclockwise direction in  FIG.  13   . 
     When the vibration is imparted to the medium  99 , dust adhering to the medium  99  falls due to the vibration. In particular, when the medium  99  is paper, the end of the medium  99  may be a cut surface that has been cut out. As a result, paper powder is easily produced from the end of the medium  99 . Thus, when the vibration is imparted to the medium  99 , dust, paper powder, etc. are removed from the medium  99  by the vibration. By removing dust, paper powder, etc. from the medium  99  by the supply device  18 , the risk of dust, paper powder, etc. adhering to various configurations within the processing device  11  can be reduced. 
     Next, a process in which the supply device  18  of the first embodiment imparts vibration to the medium  99  will be described. In the first embodiment, when the sensor  47  detects that the removal cassette  51  is mounted to the housing  41 , the supply control unit  48  executes a first process as a process for imparting vibration to the medium  99 . 
     As illustrated in  FIG.  14   , the supply control unit  48 , which executes the first process, moves the clamping member  45  downward in step S 11 . As a result, the clamping member  45  clamps the medium  99 . 
     The supply control unit  48  drives the ultrasonic element  55  in step S 12 . This imparts vibration to the medium  99 . In the first embodiment, the ultrasonic element  55  assists in imparting vibration to the medium  99 . At this time, the supply control unit  48  may vibrate the lifting member  56 . 
     The supply control unit  48  rotates the rotating bodies  58  in step S 13 . As a result, the rotating bodies  58  contact the ends of the plurality of media  99 . The rotating bodies  58  impart vibration to the pickup roller  43  and the medium  99  clamped by the clamping member  45 . At this time, the portion clamped by the pickup roller  43  and the clamping member  45  acts as a fixed end, and the ends of the medium  99  contacted by the rotating bodies  58  act as free ends, so that the medium  99  vibrates. 
     The supply control unit  48  moves the rotating bodies  58  downward to upward in step S 14 . 
     The supply control unit  48  stops the ultrasonic element  55  and the rotating bodies  58  in step S 15 . The supply control unit  48  executes step S 15  after a predetermined amount of time has elapsed since executing step S 14 . The predetermined time is, for example, a time until the movement of the rotating bodies  58  is completed. 
     The supply control unit  48  moves the clamping member  45  upward in step S 16 . This causes the clamping member  45  to move away from the medium  99 . When the processing of step S 16  is finished, the supply control unit  48  ends the first process. 
     In this manner, the control method for controlling the supply device  18  includes imparting vibration to the medium  99  by the rotating bodies  58  when the medium  99  is accommodated in the removal cassette  51 . The supply control unit  48  causes the rotating bodies  58  to impart vibration to the medium  99  when the medium  99  is accommodated in the removal cassette  51  by executing a program stored in the memory. The program may be readable from a storage medium such as a CD, USB memory, etc. 
     Next, the functions and effects of the first embodiment will be described. 
     (1) The rotating bodies  58 , which are the vibration imparting units, impart vibration to the medium  99  by contacting the respective ends of the plurality of media  99  accommodated in the removal cassette  51 , which is the accommodating unit. 
     According to the above-described configuration, the rotating bodies  58  contact the ends of the plurality of media  99 , thereby imparting vibration to the plurality of media  99 . Therefore, dust, paper powder, etc. can be removed from the plurality of media  99 . 
     (2) The rotating bodies  58 , which are the vibration imparting unit, impart vibration to the medium  99  in a direction orthogonal to the surface of the medium  99 . 
     Since the medium  99  has a sheet shape, the vibration in a direction orthogonal to the surface is more easily imparted than when the vibration in a direction along the surface thereof is imparted. Thus, according to the above-described configuration, the medium  99  is effectively vibrated. 
     (3) When the upper surface  71 , which is the placement surface, is viewed in plan view, the rotating bodies  58 , which are the vibration imparting units, contact a portion of the end of the medium  99  that does not overlap the upper surface  71 . The portion of the end of the medium  99  that does not overlap the upper surface  71  is not supported by the upper surface  71 , and thus is prone to vibration. Thus, according to the above-described configuration, the medium  99  is effectively vibrated. 
     (4) When the upper surface  71 , which is the placement surface, is viewed in plan view, the pickup roller  43  and the clamping member  45  contact a portion of the medium  99  overlapping the upper surface  71 . The rotating bodies  58 , which are the vibration imparting unit, impart vibration to the medium  99  by contacting the medium  99  clamped by the pickup roller  43  and the clamping member  45 . 
     According to the above-described configuration, the portion clamped by the pickup roller  43  and the clamping member  45  acts as the fixed end, and the portions where the rotating bodies  58  come into contact act as the free ends, so that the medium  99  placed at the upper surface  71  vibrates. In this case, the vibration of the medium  99  has higher frequency in comparison to a case where the medium  99  is not clamped by the pickup roller  43  and the clamping member  45 . In other words, the vibration frequency of the medium  99  is increased. As a result, dust, paper powder, etc. are effectively removed. 
     (5) The pickup roller  43  functions as the clamping unit for clamping the medium  99 . 
     According to the above-described configuration, the pickup roller  43  that feeds the medium  99  also functions as the clamping unit, so the configuration of the supply device  18  can be simplified. 
     (6) The rotating member  95  rotates so that the vane  97  comes into contact, from below, with the end of the medium  99  placed at the upper surface  7 . 
     According to the above-described configuration, the vane  97  contacts the end of the medium  99  so as to lift up the end of the medium  99 . The end of the medium  99  drops downward by the action of gravity after being lifted up by the vane  97 . Conversely, when the rotating member  95  rotates so that the vane  97  comes into contact with the end of the medium  99  from above, the end of the medium  99  is displaced upward by the rigidity of the medium  99  itself after being depressed by the vane  97 . Thus, when the rotating member  95  rotates so that the vane  97  comes into contact, from below, with the end of the medium  99 , the medium  99  vibrates effectively since the gravity acts more effectively than when the rotating member  95  rotates so that the vane  97  contact the end of the medium  99  from above. 
     (7) Among the rotating bodies  58  that are the vibration imparting units, the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  move together with the respective edge guides  57 . 
     According to the above-described configuration, the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  move along with the movement of the respective edge guides  57 . Thus, regardless of the size of the medium  99  accommodated in the removal cassette  51 , the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  can contact the end of the medium  99 . That is, the second rotating body  92 , the third rotating body  93 , and the fourth rotating body  94  can impart vibration to the medium  99  regardless of the size of the medium  99 . 
     (8) Each of the plurality of rotating bodies  58 , which is the vibration imparting unit, contacts respective different ends of the medium  99 . 
     According to the above-described configuration, the medium  99  effectively vibrates compared to a case where only one rotating body  58  is provided. 
     (9) The rotating bodies  58 , which are the vibration imparting unit, move upward and downward. 
     According to the above-described configuration, the rotating bodies  58  can effectively contact the plurality of media  99  to be stacked. 
     (10) One delivery path  46  corresponding to the removal cassette  51 , which is the first accommodating unit, and another delivery path  46  corresponding to the normal cassette  52 , which is the second accommodating unit, are coupled to each other. 
     According to the above-described configuration, the medium  99  from which dust, paper powder, etc. have been removed in the removal cassette  51  can be fed through the delivery path  46  towards the normal cassette  52 . Therefore, even when the rotating bodies  58  are not provided to the normal cassette  52 , dust, paper powder, etc. can be removed from the medium  99  accommodated in the normal cassette  52 . 
     (11) The removal cassette  51 , which is the first accommodating unit, is located below the normal cassette  52 , which is the second accommodating unit. 
     According to the above-described configuration, the risk of dust, paper powder, etc. removed from the medium  99  in the removal cassette  51  reaching the normal cassette  52  is reduced. 
     (12) The cassette  42 , which is the accommodating unit, vertically overlaps the processing unit  13 . 
     According to the above-described configuration, the installation area of the processing device  11  can be reduced compared to a case where the cassette  42  does not overlap the processing unit  13  vertically. 
     Second Embodiment 
     Next, a second embodiment of the supply device will be described. In the second embodiment, features different from the first embodiment will be mainly described. In the second embodiment, descriptions of the configurations common to the first embodiment will be omitted. The supply device of the second embodiment may be embedded in the processing device  11  or may be external to the processing device  11 . 
     As illustrated in  FIGS.  15  and  16   , the supply device  101  of the second embodiment includes an accommodating cassette  102  accommodating the medium  99 . Although not illustrated, the supply device  101  of the second embodiment includes, similar to the first embodiment, the housing  41  at which the accommodating cassette  102  is mounted, the pickup roller  43  that feeds the medium  99  accommodated in the accommodating cassette  102 , the sensor  47  for detecting mounting of the accommodating cassette  102 , the supply control unit  48  that controls the supply device  101 , etc. 
     The accommodating cassette  102  is an accommodating unit that accommodates the medium  99 . The accommodating cassette  102  accommodates the plurality of media  99  in landscape orientation, similar to the first embodiment. The accommodating cassette  102  has a configuration corresponding to the removal cassette  51  of the first embodiment. 
     The accommodating cassette  102  has a casing  103 , a table  104 , a cursor  105 , and a suction unit  106 . 
     The casing  103  supports the table  104  and the cursor  105 , for example. The casing  103  is provided, for example, in a cuboid shape. The casing  103  is coupled to the suction unit  106 . The casing  103  has a support surface  107 , an opening  108 , and an accommodating chamber  109 . 
     The support surface  107  is a surface that supports the table  104  and the cursor  105 . In the second embodiment, the support surface  107  faces upward. 
     The opening  108  is provided to the support surface  107 . As such, the opening  108  opens upward. The opening  108  is passed through the inside of the casing  103  and the outside of the casing  103 . One or more openings  108  are provided. In the second embodiment, a plurality of the openings  108  is provided. The openings  108  may be regularly aligned or unordered. 
     The accommodating chamber  109  is a space being provided inside the casing  103 . The accommodating chamber  109  communicates with the outside of the casing  103  by the openings  108 . The accommodating chamber  109  is coupled to the suction unit  106 . 
     The table  104  is, for example, a plate-like member. The table  104  is provided to the support surface  107  of the casing  103 . The table  104  is provided in a cuboid shape, for example. The table  104  is smaller than the casing  103 . Specifically, when the table  104  is viewed in plan view, the area of the table  104  is smaller than the area of the casing  103 . 
     The table  104  supports, from below, the medium  99  accommodated by the accommodating cassette  102 . In other words, the medium  99  is placed at the table  104 . The table  104  includes a first surface  111 , a second surface  112 , a third surface  113 , a fourth surface  114 , and an upper surface  115 . 
     The first surface  111 , the second surface  112 , the third surface  113 , and the fourth surface  114  are surfaces that interface with the upper surface  115 . The first surface  111  and the second surface  112  are surfaces facing opposite to each other. The first surface  111  and the second surface  112  interface with the third surface  113  and the fourth surface  114 , respectively. The third surface  113  and the fourth surface  114  are surfaces facing opposite to each other. The third surface  113  and the fourth surface  114  interface with the first surface  111  and the second surface  112 , respectively. 
     The upper surface  115  is a surface at which the medium  99  is placed. In this regard, the upper surface  115  is a placement surface at which the medium  99  is placed. The upper surface  115  is located above the casing  103 . The area of the upper surface  115  is smaller than the area of the support surface  107 . 
     The table  104  is configured to be movable over the casing  103 . Specifically, the table  104  is movable in four directions from a normal position. The table  104  is movable in a direction along the upper surface  115 . The normal position is, for example, a position that is the center of the support surface  107  when the casing  103  is viewed in plan view. The table  104  is typically located at the normal position. The table  104  illustrated in  FIGS.  15  and  16    is located at the normal position. 
     The table  104  is movable in two directions orthogonal to the first surface  111  and the second surface  112  when the table  104  is viewed in plan view. In other words, the table  104  is movable in two directions along the third surface  113  and the fourth surface  114  when the table  104  is viewed in plan view. Furthermore, the table  104  is movable in two directions orthogonal to the third surface  113  and the fourth surface  114  when the table  104  is viewed in plan view. In other words, the table  104  is movable in two directions along the first surface  111  and the second surface  112  when the table  104  is viewed in plan view. 
     When the table  104  is viewed in plan view, the medium  99  placed at the table  104  is placed so that the end thereof protrudes from the table  104 . In other words, the area of the table  104  is typically smaller than the area of the medium  99  to be placed. 
     The cursor  105  is a plate-like member. The cursor  105  is a member that aligns the position of the plurality of media  99  by contacting the plurality of media  99 . The cursor  105  aligns the position of the end of the medium  99  placed at the table  104  by contacting the end of the medium  99  placed at the table  104 . In this regard, the cursor  105  is an alignment unit that aligns the medium  99 . 
     One or more cursors  105  are provided. In the first embodiment, three cursors  105  are provided. Thus, in the first embodiment, the cursors  105  includes a first cursor  121 , a second cursor  122 , a third cursor  123 , and a fourth cursor  124 . The first cursor  121 , the second cursor  122 , the third cursor  123 , and the fourth cursor  124  are located to surround the four sides of the table  104 . 
     The first cursor  121  is provided over the casing  103 . The first cursor  121  is configured to be movable over the casing  103 . The first cursor  121  faces the first surface  111  with respect to the table  104 . The first cursor  121  is parallel to the first surface  111 . The first cursor  121  is movable in two directions orthogonal to the first surface  111  in a state parallel with the first surface  111 . The first cursor  121  is movable in a direction away from the first surface  111  and in a direction approaching the first surface  111 . The first cursor  121  contacts an end of the medium  99  placed at the table  104  by moving in a direction approaching the first surface  111 . For example, the first cursor  121  contacts a side end of the medium  99 . 
     The second cursor  122  is provided over the casing  103 . The second cursor  122  is configured to be movable over the casing  103 . The second cursor  122  faces the second surface  112  with respect to the table  104 . The second cursor  122  is parallel to the second surface  112 . The second cursor  122  is movable in two directions orthogonal to the second surface  112  in a state parallel with the second surface  112 . The second cursor  122  is movable in a direction away from the second surface  112  and in a direction approaching the second surface  112 . The second cursor  122  contacts an end that is opposite to the end of the medium  99  contacted by the first cursor  121 , by moving in a direction approaching the second surface  112 . For example, the second cursor  122  contacts a side end that is opposite to the side end of the medium  99  with which the first cursor  121  comes int contact. 
     The third cursor  123  is provided over the casing  103 . The third cursor  123  is configured to be movable over the casing  103 . The third cursor  123  faces the third surface  113  with respect to the table  104 . Third cursor  123  is parallel to the third surface  113 . The third cursor  123  is movable in two directions orthogonal to the third surface  113  in a state parallel with the third surface  113 . The third cursor  123  is movable in a direction away from the third surface  113  and in a direction approaching the third surface  113 . The third cursor  123  contacts an end different from the respective ends of the medium  99  with which the first cursor  121  and the second cursor  122  each come into contact, by moving in a direction approaching the third surface  113 . For example, the third cursor  123  contacts the back end of the medium  99 . 
     The fourth cursor  124  is provided over the casing  103 . The fourth cursor  124  is configured to be movable over the casing  103 . The fourth cursor  124  faces the fourth surface  114  with respect to the table  104 . The fourth cursor  124  is parallel to the fourth surface  114 . The fourth cursor  124  is movable in two directions orthogonal to the fourth surface  114  in a state parallel with the fourth face  114 . The fourth cursor  124  is movable in a direction away from the fourth surface  114  and a direction approaching the fourth surface  114 . The fourth cursor  124  contacts an end that is opposite to the end of the medium  99  contacted by the third cursor  123 , by moving in a direction approaching the fourth surface  114 . For example, the fourth cursor  124  contacts the tip of the medium  99 . 
     The first cursor  121  and the second cursor  122  contact the medium  99  so as to sandwich the medium  99 , thereby aligning the positions of the both side ends of the medium  99 . The third cursor  123  and the fourth cursor  124  contact the medium  99  so as to sandwich the medium  99 , thereby aligning the position of the tip of the medium  99  and aligning the position of the back end of the medium  99 . 
     Movements of the first cursor  121 , the second cursor  122 , the third cursor  123 , and the fourth cursor  124  will be described collectively as a movement of the cursors  105 . The cursors  105  move between a position closest to the table  104  located at the normal position and a position furthest away from the table  104  located at the normal position. Even when located at any position, by the movement of the table  104  from the normal position, the cursors  105  contact the medium  99  placed at the table  104 . 
     As illustrated in  FIG.  17   , the cursors  105  are displaced over the casing  103  to, for example, a first position P 1 , a second position P 2 , a third position P 3 , and a fourth position P 4 . The first position P 1 , the second position P 2 , the third position P 3 , and the fourth position P 4  are positions where each cursors  105  is separated by a predetermined distance from the table  104  located at the normal position. 
     In the first cursor  121 , the first position P 1 , the second position P 2 , the third position P 3 , and the fourth position P 4  are defined by a distance between the first cursor  121  and the first surface  111 . In the second cursor  122 , the first position P 1 , the second position P 2 , the third position P 3 , and the fourth position P 4  are defined by a distance between the second cursor  122  and the second surface  112 . In the third cursor  123 , the first position P 1 , the second position P 2 , the third position P 3 , and the fourth position P 4  are defined by a distance between the third cursor  123  and the third surface  113 . In the fourth cursor  124 , the first position P 1 , the second position P 2 , the third position P 3 , and the fourth position P 4  are defined by a distance between the fourth cursor  124  and the fourth surface  114 . 
     In an example illustrated in  FIG.  17   , the first cursor  121  is at the first position P 1 , the second cursor  122  is at the second position P 2 , the third cursor  123  is at the third position P 3 , and the fourth cursor  124  is at the fourth position P 4 . 
     The first position P 1  is a position at which the cursor  105  contacts the end of the medium  99  placed at the table  104  located at the normal position. For example, the first position P 1  is a position where a distance from the table  104  located at the normal position to the cursor  105  is a first distance D 1 . On the other hand, the second position P 2 , the third position P 3 , and the fourth position P 4  are positions where the cursor  105  do not come into contact with the ends of the medium  99  placed at the table  104  located at the normal position. 
     The second position P 2  is a position further away from the table  104  located at the normal position than the first position P 1 . Thus, a distance between the cursor  105  located at the second position P 2  and the table  104  located at the normal position is greater than the distance between cursor  105  located at first position P 1  and table  104  located at the normal position. For example, the second position P 2  is a position where a distance from the table  104  located at the normal position to the cursor  105  is a second distance D 2 . The second distance D 2  is greater than the first distance D 1 . 
     The third position P 3  is a position further away from the table  104  located at the normal position than the second position P 2 . Thus, a distance between the cursor  105  located at the third position P 3  and the table  104  located at the normal position is greater than the distance between cursor  105  located at second position P 2  and table  104  located at the normal position. For example, the third position P 3  is a position where a distance from the table  104  located at the normal position to the cursor  105  is a third distance D 3 . The third distance D 3  is greater than the second distance D 2 . 
     The fourth position P 4  is a position further away from the table  104  located at the normal position than the third position P 3 . Thus, a distance between the cursor  105  located at the fourth position P 4  and the table  104  located at the normal position is greater than the distance between cursor  105  located at third position P 3  and table  104  located at the normal position. For example, the fourth position P 4  is a position where the distance from the table  104  located at the normal position to the cursor  105  is a fourth distance D 4 . The fourth distance D 4  is greater than the third distance D 3 . 
     The cursor  105  contact the medium  99  placed at the table  104  as the table  104  approaches that cursors  105  away from the table  104 . Specifically, the table  104  approaches the cursor  105  at a predetermined distance from the table  104 , so that ends of the plurality of media  99  collides with that cursor  105 . At this time, vibration is imparted to the end of the plurality of media  99 . In this regard, the cursor  105  is a vibration imparting unit. Accordingly, in the second embodiment, the vibration imparting unit is the alignment unit. Therefore, the vibration imparting unit can move with the alignment unit. 
     The cursor  105  is operated by being controlled by the supply control unit  48 . The cursor  105  imparts vibration in a direction along the surface of the medium  99  to the medium  99  due to the collision of the medium  99 . 
     Hereinafter, a case is considered where the table  104  moves toward the cursor  105  located at the third position P 3 . In this case, an acceleration distance of the table  104  is longer than that of the case where the table  104  moves toward the cursor  105  located at the second position P 2 . When the acceleration distance of the table  104  increases, the speed of the table  104  when the medium  99  collides with the cursor  105  increases. As a result, the impact applied to the medium  99  increases. That is, the impact on the medium  99  when the medium  99  collides with the cursor  105  in the case where the cursor  105  is located at the third position P 3  is larger than that of the case where the cursor  105  is located at the second position P 2 . Similarly, the impact on the medium  99  when the medium  99  collides with the cursor  105  in the case where the cursor  105  is located at the fourth position P 4  is larger than those of the case where the cursor  105  is located at the second position P 2  and the case where the cursor  105  is located at the third position P 3 . The greater the impact on the medium  99 , the greater the vibration imparted to the medium  99 . As a result, the end of the medium  99  greatly vibrates. 
     For the medium  99  placed at the table  104 , vibration is imparted to each of the ends of the medium  99  by sequentially colliding with the first cursor  121 , the second cursor  122 , the third cursor  123 , and the fourth cursor  124 . Finally, all the cursors  105 , i.e., the first cursor  121 , the second cursor  122 , the third cursor  123 , and the fourth cursor  124  are displaced to the first position P 1 . At this time, the table  104  is located at the normal position. Thus, finally, the medium  99  placed at the table  104  contacts all of the first cursor  121 , the second cursor  122 , the third cursor  123 , and the fourth cursor  124 . As a result, the medium  99  is aligned. 
     In the second embodiment, the supply control unit  48  controls the table  104  and the cursor  105  to remove dust, paper powder, etc. and to align the medium  99 . The supply control unit  48  executes a second process when the sensor  47  detects that the accommodating cassette  102  is mounted to the housing  41 . In the second process, by imparting vibration to the medium  99 , dust, paper powder, etc. are removed from the medium  99  as well as the medium  99  is aligned. In other words, in the second embodiment, the supply control unit  48  executes the second process to align the medium  99  while the alignment unit imparts vibration to the medium  99 . 
     As illustrated in  FIG.  18   , the supply control unit  48 , which executes the second process, moves the cursors  105  to the first position P 1  in step S 21 . At this time, the supply control unit  48  moves all of the cursors  105  to the first position P 1 . Furthermore, in step S 21 , the supply control unit  48  moves the table  104  to the normal position. As such, the cursors  105  contact the ends of the medium  99  placed at the table  104 . At this time, the medium  99  is aligned. 
     The supply control unit  48  sets a variable N to 4 in step S 22 . The variable N is a parameter stored by the supply control unit  48 . 
     The supply control unit  48  moves the first cursor  121  to an Nth position in step S 23 . When the supply control unit  48  executes step S 23  immediately after executing step S 22 , the first cursor  121  is moved to the fourth position P 4  since the variable N is 4. At this time, the first cursor  121  is separated from the side end of the medium  99  placed at the table  104 . 
     The supply control unit  48  moves the table  104  toward the first cursor  121  in step S 24 . Specifically, the supply control unit  48  moves the table  104  toward first cursor  121  until the medium  99  collides with the first cursor  121  in step S 24 . When the medium  99  collides with the first cursor  121 , vibration is imparted to the side end of the medium  99  that collides with the first cursor  121 . 
     The supply control unit  48  moves the second cursor  122  to the Nth position in step S 25 . For example, the supply control unit  48  moves the second cursor  122  to the fourth position P 4  in step S 25 . 
     The supply control unit  48  moves the table  104  toward the second cursor  122  in step S 26 . In particular, the supply control unit  48  moves the table  104  toward the second cursor  122  until the medium  99  collides with the second cursor  122  in step S 26 . When the medium  99  collide with the second cursor  122 , vibration is imparted to the side end of the medium  99  that collides with the second cursor  122 . In addition, the supply control unit  48  moves the first cursor  121  to the first position P 1  in step S 26 . 
     The supply control unit  48  moves the second cursor  122  to the first position P 1  in step S 27 . Furthermore, in step S 27 , the supply control unit  48  moves the table  104  to the normal position. At this time, the medium  99  is aligned. 
     The supply control unit  48  moves the third cursor  123  to the Nth position in step S 28 . For example, the supply control unit  48  moves the third cursor  123  to the fourth position P 4  in step S 28 . 
     The supply control unit  48  moves the table  104  toward the third cursor  123  in step S 29 . Specifically, the supply control unit  48  moves the table  104  toward the third cursor  123  until the medium  99  collides with the third cursor  123  in step S 29 . When the medium  99  collide with the third cursor  123 , vibration is imparted to the back end of the medium  99  that collides with the third cursor  123 . 
     The supply control unit  48  moves the fourth cursor  124  to the Nth position in step S 30 . For example, the supply control unit  48  moves the fourth cursor  124  to the fourth position P 4  in step S 30 . 
     The supply control unit  48  moves the table  104  toward the fourth cursor  124  in step S 31 . Specifically, the supply control unit  48  moves the table  104  toward the fourth cursor  124  until the medium  99  collides with the fourth cursor  124  in step S 31 . When the medium  99  collide with the fourth cursor  124 , vibration is imparted to the tip of the medium  99  that collides with the fourth cursor  124 . In addition, the supply control unit  48  moves the third cursor  123  to the first position P 1  in step S 31 . 
     The supply control unit  48  moves the fourth cursor  124  to the first position P 1  in step S 32 . Furthermore, in step S 32 , the supply control unit  48  moves the table  104  to the normal position. At this time, the medium  99  is aligned. 
     The supply control unit  48  subtracts the variable N by one in step S 33 . In other words, the supply control unit  48  decrements the variable N in step S 33 . 
     The supply control unit  48  determines whether or not the variable N is 1 in step S 34 . When the variable N is 1, the supply control unit  48  ends the second process. When the variable N is not 1, the supply control unit  48  returns processing back to step S 23 . 
     When the process returns to step S 23 , the supply control unit  48  repeatedly executes processing from step S 23  to step S 34  again. In other words, in this case, for processing from step S 23  to step S 34 , the supply control unit  48  transitions to the second loop of processing after ending the first loop of processing. 
     In the second loop of processing, the variable N is 3. Thus, in step S 23 , step S 25 , step S 28  and step S 30  of the second loop, unlike the first loop, the first cursor  121 , the second cursor  122 , the third cursor  123  and the fourth cursor  124  move to the third position P 3 . That is, the acceleration distance of the table  104  at the second loop is shorter than the acceleration distance of the table  104  in the first loop. Therefore, the impact applied to the medium  99  at the second loop becomes smaller than the impact applied to the medium  99  in the first loop. 
     When processing from step S 23  to step S 34  of the second loop of processing is completed, the supply control unit  48  transitions to the third loop of processing. In the third loop of processing, the variable N is 2. Thus, in steps S 23 , S 25 , S 28  and S 30 , the first cursor  121 , the second cursor  122 , the third cursor  123  and the fourth cursor  124  move to the second position P 2 . That is, the acceleration distance of the table  104  at the third loop is shorter than the acceleration distance of the table  104  at the second loop. Thus, the impact on the medium  99  at the third loop becomes smaller than the impact on the medium  99  in the second loop. In step S 34  of the third loop, N is 1. Thus, when processing from step S 23  to step S 34  of the third loop of processing is completed, the supply control unit  48  ends the second process. 
     In the second embodiment, the distance between the cursors  105  and the table  104  at which the medium  99  collides is controlled to be gradually reduced as the processing from step S 23  to step S 34  proceeds with the first, second, and third loops. In this manner, the cursors  105  imparts vibration to the medium  99  by moving the table  104  toward the cursors  105  from a state in which the medium  99  placed at the table  104  is not in contact with the cursor  105  to cause the medium  99  to contact the cursors  105  a plurality of times. Dust, paper powder, etc. are effectively removed by imparting vibration to the medium  99  a plurality of times. 
     A process of repeating the processing from step S 23  to step S 34  is a process in which vibration is imparted to the medium  99  a plurality of times by moving the table  104  to cause the medium  99  to contact the cursors  105  a plurality of times. In the second embodiment, during this process, a distance between the table  104  and the cursors  105  in a state with the medium  99  placed at the table  104  being not in contact with the cursors  105  when the table  104  moves toward the cursors  105 , is larger than a distance between the table  104  and the cursors  105  in a state with the medium  99  placed at the table  104  being not in contact with the cursors  105  when the table  104  subsequently moves toward the cursors  105 . 
     As illustrated in  FIG.  16   , the suction unit  106  includes a pump, for example. The suction unit  106  has a connecting tube  125  coupled to the casing  103 . When being driven, the suction unit  106  sucks the accommodating chamber  109 . The accommodating chamber  109  is brought to negative pressure by being suctioned into the suction unit  106 . As a result, dust, paper powder, etc. removed from the medium  99  accommodated in the accommodating cassette  102  is suctioned into the openings  108 . As a result, dust, paper powder, etc. removed from the medium  99  is sucked into the suction unit  106 . Thus, the risk of dust, paper powder, etc. removed from the medium  99  floating within the accommodating cassette  102  is reduced. 
     According to the second embodiment, the following effects can be obtained in addition to the effects of the first embodiment. (13) The cursors  105  align the medium  99  while imparting vibration to the medium  99 . In other words, the cursors  105  are the vibration imparting units, and are also the alignment units. 
     According to the above-described configuration, the cursors  105  can efficiently impart vibration to the medium  99  and align the medium  99 . 
     (14) The medium  99  placed at the upper surface  115 , which is the placement surface, is brought into contact with the cursors  105  a plurality of times, thereby imparting vibration to the medium  99  a plurality of times. By imparting vibration a plurality of times, dust, paper powder, etc. are effectively removed from the medium  99 . 
     (15) In the process in which vibration is imparted to the medium  99  a plurality of times by moving the upper surface  115 , which is the placement surface, to cause the medium  99  to contact the cursors  105 , which are the alignment units, a plurality of times, a distance between the upper surface  115  and the cursors  105  in a state with the medium  99  placed at the upper surface  115  being not in contact with the cursors  105  when the upper surface  115  moves toward the cursors  105 , is larger than a distance between the upper surface  115  and the cursors  105  in a state with the medium  99  placed at the upper surface  115  being not in contact with the cursors  105  when the upper surface  115  subsequently moves toward the cursors  105 . 
     According to the above-described configuration, in the process in which vibration is imparted to the medium  99  a plurality of times, the distance between the upper surface  115  and the cursors  105  gradually decreases. Compared to a case where the distance between the upper surface  115  and the cursors  105  is constant, the time required to remove dust, paper powder, etc. can be reduced. In addition, the distance between the upper surface  115  and the cursors  105  is gradually reduced, thereby reducing the magnitude of vibration imparted to the medium  99 . This imparts vibration of different magnitudes to the medium  99 . By imparting different magnitudes of vibration to the medium  99 , dust, paper powder, etc. are effectively removed from the medium  99 . 
     (16) The casing  103  has the openings  108  and the accommodating chamber  109  leading to the openings  108 . The suction unit  106  sucks the accommodating chamber  109 . According to the above-described configuration, the dust falling from the medium  99  is collected in the accommodating chamber  109  through the openings  108 . As a result, the risk of dust, paper powder, etc. removed from the medium  99  flying up can be reduced. 
     Third Embodiment 
     Next, a third embodiment will be described. In the third embodiment, features different from the first embodiment will be mainly described. In the third embodiment, descriptions of the configurations common to the first embodiment will be omitted. The supply device of the third embodiment may be embedded in the processing device  11  or may be external to the processing device  11 . 
     As illustrated in  FIGS.  19  and  20   , the supply device  131  of the third embodiment includes a holding cassette  132  accommodating the medium  99 . Although not illustrated, the supply device  131  of the third embodiment includes, similar to the first embodiment, the housing  41  at which the holding cassette  132  is mounted, the pickup roller  43  that feeds the medium  99  accommodated in the holding cassette  132 , the sensor  47  for detecting mounting of the holding cassette  132 , the supply control unit  48  that controls the supply device  131 , etc. 
     The holding cassette  132  is an accommodating unit that accommodates the medium  99 . The holding cassette  132  holds the medium  99  in portrait orientation rather than landscape orientation, unlike the cassette  42  of the first embodiment and the accommodating cassette  102  of the second embodiment. 
     The holding cassette  132  has a first side surface  133 , a second side surface  134 , a third side surface  135 , a fourth side surface  136 , and a bottom surface  137 . The holding cassette  132  has a first rail  141 , a second rail  142 , a first arm  143 , and a second arm  144 . 
     The first side surface  133 , the second side surface  134 , the third side surface  135 , and the fourth side surface  136  are surfaces that interface with the bottom surface  137 . The first side surface  133 , the second side surface  134 , the third side surface  135 , and the fourth side surface  136  extend upward from the bottom surface  137 . The first side surface  133  and the second side surface  134  face each other. The first side surface  133  and the second side surface  134  interface with the third side surface  135  and the fourth side surface  136 , respectively. The third side surface  135  and the fourth side surface  136  face each other. The third side surface  135  and the fourth side surface  136  interface with the first side surface  133  and the second side surface  134 , respectively. 
     The bottom surface  137  is a bottom surface of the holding cassette  132 . The bottom surface  137  contacts the plurality of media  99  accommodated in portrait orientation. That is, the bottom surface  137  contacts ends of the plurality of media  99  to be stacked. The bottom surface  137  is a placement surface at which the medium  99  is placed. 
     The first rail  141  and the second rail  142  are provided to the first side surface  133  and the second side surface  134 , respectively. The first rail  141  and the second rail  142  face each other. The first rail  141  and the second rail  142  extend vertically. 
     The first arm  143  and the second arm  144  are attached to the first rail  141  and the second rail  142 , respectively. The first arm  143  and the second arm  144  move along the first rail  141  and the second rail  142 . In other words, the first arm  143  and the second arm  144  are vertically displaced. The first arm  143  extends from the first rail  141  toward the second rail  142 . That is, the first arm  143  extends toward the first side surface  133 . The second arm  144  extends from the second rail  142  toward the first rail  141 . That is, the second arm  144  extends toward the second side surface  134 . 
     The first arm  143  and the second arm  144  include a first pressing member  145  and a second pressing member  146  at the tips thereof, respectively. 
     The first pressing member  145  and the second pressing member  146  are, for example, plate-like members. The first pressing member  145  and the second pressing member  146  face each other. The first pressing member  145  and the second pressing member  146  mutually press the medium  99  accommodated in the holding cassette  132 . 
     The first pressing member  145  and the second pressing member  146  contact the front surface and the back surface of the plurality of media  99  to be stacked. The first pressing member  145  and the second pressing member  146  sandwich the plurality of media  99  by pressing the front surface and the back surface of the plurality of media  99  to be stacked against each other. Thus, the first arm  143  and the second arm  144  hold the plurality of media  99  therebetween. 
     The first arm  143  and the second arm  144  move vertically while holding the plurality of media  99  therebetween. Specifically, the first arm  143  and the second arm  144  move upward to downward with the plurality of the mediums  99  being held therebetween. As the first arm  143  and the second arm  144  move downwardly, the lower end of the medium  99  collides with the bottom surface  137 . This imparts vibration to the lower end of the medium  99 . In this regard, the bottom surface  137  is a vibration imparting unit. In the third embodiment, the supply control unit  48  imparts vibration to the medium  99  by operating the first arm  143  and the second arm  144  when the sensor  47  detects that the holding cassette  132  is mounted to the housing  41 . Dust, paper powder, etc. are removed from the medium  99  by causing the lower end of the medium  99  to collide with the bottom surface  137  once or a plurality of times. 
     When the lower end of the medium  99  contacts the bottom surface  137 , the position of the lower end of the medium  99  is aligned. When the position of the lower end of the medium  99  is aligned, the position of the upper end of the medium  99  is also aligned. In this regard, the bottom surface  137  is an alignment unit that aligns the medium  99 . 
     According to the third embodiment, the following effects are obtained in addition to the effects of the first embodiment and the second embodiment. 
     (17) The bottom surface  137 , which is the placement surface, contacts the end of the plurality of media  99  to be stacked. 
     According to the above-described configuration, the supply device  131  can be miniaturized in a direction along the bottom surface  137 . 
     Fourth Embodiment 
     Next, a fourth embodiment will be described. In the fourth embodiment, features different from the third embodiment will be mainly described. In the fourth embodiment, the same reference numerals are given to the configurations common to those in the third embodiment, and the description thereof will be omitted. The supply device of the fourth embodiment may be embedded in the processing device  11  or may be external to the processing device  11 . 
     As illustrated in  FIGS.  21  and  22   , the supply device  151  of the fourth embodiment includes a holding cassette  152  accommodating the medium  99 . Although not illustrated, the supply device  151  of the fourth embodiment includes, similar to the first embodiment, the housing  41  at which the holding cassette  152  is mounted, the pickup roller  43  that feeds the medium  99  accommodated in the holding cassette  152 , the sensor  47  for detecting mounting of the holding cassette  152 , the supply control unit  48  that controls the supply device  151 , etc. 
     The holding cassette  152  is an accommodating unit that accommodates the medium  99 . The holding cassette  152  of the fourth embodiment holds the medium  99  in portrait orientation, similar to the holding cassette  132  of the third embodiment. The holding cassette  152 , similar to the third embodiment, includes the first side surface  133 , the second side surface  134 , the third side surface  135 , the fourth side surface  136 , and the bottom surface  137 . The holding cassette  152  has the first rail  141  and the second rail  142 , similar to the third embodiment. The holding cassette  152 , unlike the third embodiment, has a holding unit  153 . 
     The holding unit  153  is attached to the first rail  141  and the second rail  142 . The holding unit  153  moves along the first rail  141  and the second rail  142 . In other words, the holding unit  153  is vertically displaced. 
     The holding unit  153  includes a holding member  154 , a first gripping member  155 , and a second gripping member  156 . The holding member  154  is, for example, a plate-like member. The holding member  154  has a holding surface  157 . The holding surface  157  is in contact with the plurality of media  99  accommodated in portrait orientation. In other words, the holding surface  157  contacts ends of the plurality of media  99  to be stacked. As described above, the holding surface  157  is a placement surface at which the medium  99  is placed. 
     The first gripping member  155  and the second gripping member  156  are, for example, plate-like members. The first gripping member  155  and the second gripping member  156  are provided to the holding surface  157 . The first gripping member  155  and the second gripping member  156  face each other. The first gripping member  155  and the second gripping member  156  mutually press the medium  99  accommodated in the holding cassette  152 . 
     The first gripping member  155  and the second gripping member  156  contact the front surface and the back surface of the plurality of media  99  to be stacked. The first gripping member  155  and the second gripping member  156  sandwich the plurality of media  99  by pressing the front surface and the back surface of the plurality of media  99  to be stacked against each other. In this manner, the first gripping member  155  and the second gripping member  156  hold the plurality of media  99  therebetween. As a result, the holding unit  153  holds the plurality of media  99 . 
     The holding unit  153  moves vertically while holding the plurality of media  99 . Specifically, the holding unit  153  moves upward to downward with the plurality of the mediums  99  being held. At this time, the holding unit  153  accelerates downward at an acceleration that is faster than gravitational acceleration. In this case, when the holding unit  153  moves downward, the lower end of the medium  99  moves away from the holding surface  157 . When the holding unit  153  is decelerated by approaching the bottom surface  137 , the lower end of the medium  99  collides with the holding surface  157 . This imparts vibration to the lower end of the medium  99 . In this regard, the holding unit  153  is a vibration imparting unit. In the fourth embodiment, the supply control unit  48  imparts vibration to the medium  99  by operating the holding  153  when the sensor  47  detects that the holding cassette  152  is mounted to the housing  41 . Dust, paper powder, etc. are removed from the medium  99  by causing the lower end of the medium  99  to collide with the holding surface  157  once or a plurality of times. 
     When the lower end of the medium  99  contacts the holding surface  157 , the position of the lower end of the medium  99  is aligned. When the position of the lower end of the medium  99  is aligned, the position of the upper end of the medium  99  is also aligned. In this regard, the holding unit  153  is an alignment unit that aligns the medium  99 . 
     According to the fourth embodiment, the same effects as those of the third embodiment can be obtained. 
     The above-mentioned first to fourth embodiments can be modified and implemented as follows. The first embodiment, the second embodiment, the third embodiment, the fourth embodiment, and the following modified examples can be implemented in combination with each other in combination within a range in which a technical contradiction does not arise.
         The processing executed by the processing unit  13  on the medium  99  may include reading of an image of the medium  99 , or stapling of the medium  99 . In other words, the processing device  11  according to the first to fourth embodiments is a printing device that prints an image on the medium  99 , however, the processing device  11  may be a reading device that reads an image of the medium  99 , or may be a post-processing device that performs post-processing on the medium  99 .   The accommodating unit is not limited to the cassette  42  that is attached to and detached from the housing  41 , and may simply be a case for accommodating the medium  99 .   The supply device  18  of the first embodiment may include a configuration for collecting dust, paper powder, etc., such as the casing  103  and the suction unit  106  provided in the supply device  101  of the second embodiment.   The rotating bodies  58  may repeatedly move upward and downward when imparting vibration to the medium  99 .   In the second process, the medium  99  may be operated so as to only collide with the first cursor  121  and the second cursor  122 . In other words, in the second process, processing from step S 28  to step S 32  may be skipped.   In the second process, the medium  99  may be operated so as to only collide with the third cursor  123  and the fourth cursor  124 . In other words, in the second process, processing from step S 23  to step S 27  may be skipped.       

     In step S 22  of the second process, the variable N may be set to 3 or may be set to 2. That is, processing from step S 23  to step S 34  may end in the first loop or end in the second loop.
         In step S 26  and step S 31  of the second process, the table  104  may be returned to the normal position, and then the table  104  may be moved toward the cursors  105 . In this manner, the acceleration distances of the table  104  when moving toward the first cursor  121 , the second cursor  122 , the third cursor  123 , and the fourth cursor  124  are equal, so that the impact applied to the medium  99  is equalized.   The rotating bodies  58  may be provided in the cursors  105 .   In the third embodiment, the medium  99  may collide with the third side surface  135  and the fourth side surface  136 .   The liquid discharged by the head  21  is not limited to ink, and may be, for example, a liquid material in which particles of functional materials are dispersed or mixed in the liquid. For example, the head  21  may discharge a liquid material containing a material such as an electrode material or a pixel material used in manufacture of liquid crystal display, an electroluminescent display, and a surface emitting display, etc. in a dispersed or dissolved form.       

     Hereinafter, technical concepts and effects thereof that are understood from the above-described exemplary embodiments and modified examples will be described. 
     (A) A supply device is configured to supply a medium to a processing unit configured to perform processing on the medium, the supply device including an accommodating unit configured to accommodate a plurality of the media in a state of being stacked therein and a vibration imparting unit configured to contact ends of the plurality of media accommodated in the accommodating unit to impart vibration to the medium. 
     According to the above-described configuration, the vibration imparting unit contacts the end of the plurality of media, thereby imparting vibration to the plurality of media. Thus, dust can be removed from the plurality of media. 
     (B) In the above-described supply device, the accommodating unit may include a placement surface at which the medium to be accommodated is placed, and the vibration imparting unit may impart vibration in a direction orthogonal to a front surface of the medium placed at the placement surface. 
     The vibration in a direction orthogonal to the surface is more easily imparted to the medium than when the vibration in a direction along the surface thereof is imparted. Thus, according to the above-described configuration, the medium is effectively vibrated. 
     (C) In the above-described supply device, the vibration imparting unit may be configured to contact a portion of an end of the medium, the portion not configured to overlap the placement surface when the placement surface is viewed in plan view. 
     The portion of the end of the medium that does not overlap the placement surface is not supported by the placement surface, and thus is prone to vibration. Thus, according to the above-described configuration, the medium is effectively vibrated. 
     (D) The above-described supply device may include a clamping unit configured to contact a portion of the medium to clamp the medium, the portion configured to overlap the placement surface when the placement surface is viewed in plan view, wherein the vibration imparting unit may be configured to contact the medium clamped by the clamping unit to impart vibration to the medium. 
     According to the above-described configuration, the portion clamped by the clamping unit acts as the fixed end, and the portion where the vibration imparting unit comes into contact acts as the free end, so that the medium placed at the placement surface vibrates. In this case, the vibration of the medium has higher frequency in comparison to a case where the medium is not clamped by the clamping unit. In other words, the vibration frequency of the medium is increased. As a result, dust is effectively removed. 
     (E) In the above-described supply device, the clamping unit may include a pickup roller configured to feed the medium placed at the placement surface. 
     According to the above-described configuration, the pickup roller that feeds the medium also functions as the clamping unit, so the configuration of the supply device can be simplified. 
     (F) In the above-described supply device, the vibration imparting unit may include a rotary shaft and a rotating member configured to rotate about the rotary shaft, the rotating member may include a vane configured to extend outward, and the vane may be configured to rotate to come into contact, from below, with the end of the medium placed at the placement surface. 
     According to the above-described configuration, the vane contacts the end of the medium so as to lift up the end of the medium. The end of the medium drops downward by the action of gravity after being lifted up by the vane. Conversely, when the rotating member rotates so that the vane comes into contact with the end of the medium from above, the end of the medium is displaced upward by the rigidity of the medium itself after being depressed by the vane. Thus, when the rotating member rotates so that the vane comes into contact, from below, with the end of the medium, the medium vibrates effectively since the gravity acts more effectively than when the rotating member rotates so that the vane contact the end of the medium from above. 
     (G) The above-described supply device may include an alignment unit configured to contact the medium accommodated in the accommodating unit to align the medium, wherein the alignment unit may be configured to move to contact the medium, and the vibration imparting unit may be configured to move together with the alignment unit. 
     According to the above-described configuration, the vibration imparting unit moves as the alignment unit moves. Therefore, regardless of the size of the medium accommodated in the accommodating unit, the vibration imparting unit can contact the end of the medium. That is, the vibration imparting unit can impart vibration to the medium regardless of the size of the medium. 
     (H) In the above-described supply device, the alignment unit may include the vibration imparting unit, and the alignment unit may be configured to align the medium while imparting vibration to the medium. 
     According to the above-described configuration, it is possible to efficiently impart vibration to the medium and align the medium. 
     (I) In the above-described supply device, the accommodating unit may include a placement surface at which the medium is placed, the placement surface may be configured to move in a direction along the placement surface, the alignment unit may be configured, by moving the placement surface toward the alignment unit to cause the medium to come into contact with the alignment unit from a state with the medium placed at the placement surface being not in contact with the alignment unit, to impart vibration to the medium, and in a process of imparting vibration to the medium a plurality of times by moving the placement surface to cause the medium to contact the alignment unit a plurality of times, a distance between the placement surface and the alignment unit in a state with the medium placed at the placement surface being not in contact with the alignment unit when the placement surface moves toward the alignment unit, may be longer than a distance between the placement surface and the alignment unit in a state with the medium placed at the placement surface being not in contact with the alignment unit when the placement surface subsequently moves toward the alignment unit. 
     According to the above-described configuration, the alignment unit repeatedly contacts the medium placed at the placement surface, thereby imparting vibration to the medium repeatedly. In the process in which vibration is imparted to the medium a plurality of times, the distance between the placement surface and the alignment unit gradually decreases. In other words, the magnitude of the vibration imparted to the medium is reduced. By imparting different magnitudes of vibration, dust can be effectively removed from the medium. 
     (J) In the above-described supply device, a plurality of the vibration imparting units may be provided, and each of the plurality of vibration imparting units may be configured to contact respective different ends with respect to the medium. According to the above-described configuration, the medium effectively vibrates compared to a case where only one vibration imparting unit is provided. 
     (K) In the above-described supply device, the vibration imparting unit may be configured to move upward and downward. 
     According to the above-described configuration, the vibration imparting unit can effectively contact the plurality of media to be stacked. (L) In the above-described supply device, the accommodating unit may include a placement surface at which the medium is placed, the supply device may include a casing located below the placement surface and a suction unit coupled with the casing, the casing may include an opening and an accommodating chamber leading to the opening, and the suction unit may be configured to perform suction from the accommodating chamber. 
     According to the above-described configuration, the dust falling from the medium by imparting vibration to the vibration imparting unit is collected in the accommodating chamber through the opening. The risk of dust removed from the medium flying up can be reduced. 
     (L) In the above-described supply device, the accommodating unit may include a first accommodating unit, the supply device may include a second accommodating unit configured to accommodate a plurality of the media in a state of being stacked therein and a plurality of delivery paths respectively corresponding to the first accommodating unit and the second accommodating unit, the medium being fed toward the processing unit, and each of the plurality of delivery paths may be coupled to one another. 
     According to the above-described configuration, the medium from which dust has been removed in the first accommodating unit can be fed through the delivery path toward the second accommodating unit. Therefore, even when the vibration imparting unit is not able to impart vibration to the medium accommodated in the second accommodating unit, dust can be removed from the medium accommodated in the second accommodating unit. 
     (K) In the above-described supply device, the first accommodating unit may be located below the second accommodating unit. 
     According to the above-described configuration, the risk of dust removed from the medium by the first accommodating unit reaching the second accommodating unit is reduced. 
     (O) In the above-described supply device, the accommodating unit may include a placement surface at which the medium is placed, and the placement surface may be configured to contact ends of the plurality of media to be stacked. According to the above-described configuration, the supply device can be miniaturized in a direction along the placement surface. 
     (P) The processing device includes the above-described supply device and the processing unit. 
     According to the above-described configuration, the same effects as those of the supply device can be obtained. 
     (Q) In the above-described processing device, the accommodating unit may be configured to vertically overlap the processing unit. 
     According to the above-described configuration, the installation area of the processing device can be reduced compared to a case where the accommodating unit does not overlap the processing unit vertically. Note that the vertical direction in which the accommodating unit and the processing unit overlap each other may be a direction orthogonal to the installation surface of the processing device. 
     (R) A control method for a supply device configured to supply a medium to a processing unit, the supply device including an accommodating unit configured to accommodate a plurality of the media in a state of being stacked therein and a vibration imparting unit configured to contact ends of the plurality of media accommodated in the accommodating unit to impart vibration to the medium, wherein the method includes imparting vibration to the medium by the vibration imparting unit when the medium is accommodated in the accommodating unit. 
     According to the method described above, the same effects as those of the supply device can be obtained. 
     (S) A program for causing a control unit to execute control of a supply device configured to supply a medium to a processing unit, the supply device including an accommodating unit configured to accommodate a plurality of the media in a state of being stacked therein and a vibration imparting unit configured to contact ends of the plurality of media accommodated in the accommodating unit to impart vibration to the medium, wherein the program causes the vibration imparting unit to impart vibration to the medium when the medium is accommodated in the accommodating unit. 
     According to the program described above, the same effects as those of the supply device can be obtained.