Patent Publication Number: US-10787007-B2

Title: Printing device

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims priority from Japanese Patent Application No. 2018-066366 filed on Mar. 30, 2018, the contents of which are incorporated herein by reference in their entirety. 
     TECHNICAL FIELD 
     Aspects of the disclosure relate to a printing device. 
     BACKGROUND 
     A known printing device prints on a print medium being transported. One example is a recording device described in Japanese Unexamined Patent Application Publication No. 2012-46299, which transports a sheet with a transport device and prints on the transported sheet with a recording head. The recording device includes a first roller and a second roller downstream from the recording head in a sheet transport direction. The first roller is coupled to a discharge motor, and the second roller is coupled to a clamping motor. The recording device drives the clamping motor to move the second roller toward the first roller until the sheet is held between the first and second rollers. In this state, the recording device drives the discharge motor to rotate the first roller. The first and second rollers thus transport the sheet. 
     SUMMARY 
     This known recording device accommodates the clamping motor and the discharge motor, and thus must be sized accordingly. 
     One or more aspects of the present disclosure are directed to a printing device that avoids upsizing requirements associated with known printing devices. 
     A printing device according to one aspect of the present disclosure includes a transporting unit that transports a print medium, a printing unit that prints on the print medium that is transported by the transporting unit, a roller located downstream from the printing unit in a transport direction of the print medium, an opposing member opposing the roller, a motor rotatable in a forward direction and a reverse direction opposite to the forward direction, a first coupling mechanism that couples the motor and the roller in a manner drivable together, and rotates the roller in a first direction, which is a rotation direction in which the print medium is transported downstream in the transport direction, when the motor rotates in the forward direction, a moving mechanism that moves the roller to a first position at which the roller holds the print medium between the roller and the opposing member, and a second position at which the roller is spaced from the print medium, and a second coupling mechanism that couples the motor and the moving mechanism in a manner drivable together, and includes a first switching mechanism that couples the motor and the moving mechanism in a manner drivable together when the motor rotates in the reverse direction and decouples the motor from the moving mechanism when the motor rotates in the forward direction. 
     In the printing device according to the above aspect, the roller does not move between the first position and the second position when the motor rotates in the forward direction. The printing device may thus rotate the roller in the first direction while maintaining the roller at a predetermined position. More specifically, the printing device controls the rotation direction of the single motor to control rotation of the roller in the first direction and movement of the roller between the first position and the second position. The sizing requirements of the printing device may therefore be reduced. 
     In the printing device according to one aspect of the present disclosure, the first coupling mechanism may include a first gear coupled to and drivable together with the motor, and a second gear located on a rotation shaft of the roller and meshable with the first gear. The moving mechanism may move the rotation shaft of the roller along a toothed peripheral surface of the first gear to move the roller to the first position and the second position. In this aspect, when the roller is moved to the first or second position, the rotation shaft of the roller moves along the peripheral surface of the first gear. The second gear remains meshed with the first gear. The driving force of the motor is thus transmitted to the roller at the first or second position via the first and second gears in this order. The printing device may thus rotate the roller at the first or second position in the first direction by driving the motor. 
     The printing device according to one aspect of the present disclosure may further include a first guide having a guide hole extending along the peripheral surface or a guide groove to receive the rotation shaft of the roller. In this aspect, when the roller is moved to the first or second position, the guide hole or the guide groove guides the rotation shaft of the roller along the peripheral surface of the first gear. The printing device may reliably have the second gear meshing with the first gear when the roller is moved to the first or second position. 
     In the printing device according to one aspect of the present disclosure, the moving mechanism may include a rotator coupled to the motor by the second coupling mechanism, an eccentric member fixed to the rotator in a manner eccentric to a rotation shaft of the rotator, and a holder including a first support supporting the eccentric member and a second support rotatably supporting the rotation shaft of the roller. In this aspect, the eccentric member moves the holder as the motor rotates the rotator. Thus, the moving mechanism may move the roller to the first or second position. 
     In the printing device according to one aspect of the present disclosure, the first support may have a hole to support the eccentric member in a manner movable in a second direction perpendicular to a direction in which the rotation shaft of the rotator extends and to a direction in which the holder moves, and the second support may have a hole to support the rotation shaft of the roller in a manner movable in the second direction. In this aspect, the printing device may not rotate the holder as the eccentric member rotates about the rotation shaft of the rotator and the rotation shaft of the roller rotates about the rotation shaft of the first gear. Thus, the printing device may be provided with a holder with increased freedom of design. 
     The printing device according to one aspect of the present disclosure may further include a second guide that guides the holder to move linearly when the roller moves between the first position and the second position. In this aspect, the printing device may reduce the distance by which the holder moves when the roller moves to the first or second position. The sizing requirements of the printing device may therefore be reduced. 
     The printing device according to one aspect of the present disclosure may further include a first urging member that urges the rotator to maintain the roller at the first position. In this aspect, the motor rotates in the reverse direction to transmit a driving force to the rotator. The printing device may maintain the roller at the first position under the urging force of the first urging member when receiving the driving force of the motor transmitted to the rotator. 
     The printing device according to one aspect of the present disclosure may further include a second urging member that urges the rotator to maintain the roller at the second position. In this aspect, the motor rotates in the reverse direction to transmit a driving force to the rotator. The printing device may maintain the roller at the second position under the urging force of the second urging member when receiving the driving force of the motor transmitted to the rotator. 
     In the printing device according to one aspect of the present disclosure, the first urging member may urge the rotator to maintain the roller at the second position. In this aspect, the motor rotates in the reverse direction to transmit a driving force to the rotator. The printing device may maintain the roller at the second position under the urging force of the first urging member when receiving the driving force of the motor transmitted to the rotator. 
     In the printing device according to one aspect of the present disclosure, the holder may include a first member including the first support, a second member including the second support, and supported by the first member in a manner movable toward and away from the opposing member, and a third urging member located between the first member and the second member to urge the first member toward the opposing member. In this aspect, the printing device may adjust, in accordance with the thickness of the print medium, the holding load with which the roller and the opposing member hold the print medium between them under the urging force of the third urging member. 
     The printing device according to one aspect of the present disclosure may further include a detection unit that detects the roller at the first position or at the second position. In this aspect, the printing device may reliably detect the roller at the first or second position. 
     The printing device according to one aspect of the present disclosure may further include a detection unit that detects the roller at the first position or at the second position. The detection unit may detect the roller at the first position or at the second position by detecting a position of the first member. In this aspect, the printing device may reliably detect the roller at the first or second position. When the roller moves to the first or second position, the first member moves by a longer distance than the roller. Thus, the printing device may more easily detect the position of the roller by detecting the position of the first member than when directly detecting the position of the roller. 
     In the printing device according to one aspect of the present disclosure, the first coupling mechanism may include a second switching mechanism that couples the motor and the roller in a manner drivable together when the motor rotates in the forward direction, and decouples the motor from the roller when the motor rotates in the reverse direction. In this aspect, the roller does not rotate as the motor rotates in the reverse direction. Thus, the printing device may move the roller to the first or second position while the roller is not rotating. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective front view of a printing device as viewed from left above. 
         FIG. 2  is a sectional view taken along line II-II in  FIGS. 1 and 13  as viewed in the direction of the arrows. 
         FIGS. 3A and 3B  are perspective views of a receptor tape and a die-cut tape, respectively. 
         FIG. 4  is a perspective front view of a cutter unit in an initial state as viewed from right above. 
         FIG. 5  is a perspective view of the cutter unit shown in  FIG. 4  excluding a second frame, and coupling gears. 
         FIG. 6  is a front view of a cutter unit in the initial state. 
         FIG. 7  is an enlarged front view of a second link with a cutter unit in the initial state. 
         FIG. 8  is a perspective rear view of a cutter unit with a full-cut blade at a separate position as viewed from right above. 
         FIG. 9  is a perspective front view of a cutter unit during partial cutting as viewed from right above. 
         FIG. 10  is a front view of a cutter unit performing a partial cutting operation. 
         FIG. 11  is an enlarged front view of a second link during the partial cutting operation. 
         FIG. 12  is a perspective rear view of a full-cut blade at a full-cut position as viewed from right above. 
         FIG. 13  is a perspective front view of a discharging unit with a discharging roller at a nip position as viewed from left below. 
         FIG. 14  is a perspective rear view of a discharging unit with a discharging roller at a release position as viewed from left below. 
         FIG. 15  is a perspective front view of a roller holder as viewed from left below. 
         FIG. 16  is an enlarged view of an area W in  FIG. 2  with the discharging roller at a nip position. 
         FIG. 17  is an enlarged view of the area W in  FIG. 2  with the discharging roller at a release position. 
         FIG. 18  is a block diagram of the printing device. 
         FIG. 19  is a flowchart of a portion of a main process. 
         FIG. 20  is a flowchart of a portion of the main process continued from  FIG. 19 . 
         FIG. 21  is a flowchart of a portion of the main process continued from  FIG. 20 . 
         FIG. 22  is a flowchart of a first tape-end detection. 
         FIG. 23  is a flowchart of a second tape-end detection. 
         FIG. 24  is a conceptual diagram of a rotation determination table. 
         FIG. 25  is a perspective rear view of a discharging unit according to a first modification as viewed from left below. 
         FIG. 26  is a perspective front view of a discharging unit according to a second modification as viewed from left below. 
         FIG. 27  is a flowchart of a first tape-end detection according to the second modification. 
         FIG. 28  is a perspective front view of a discharging unit according to a third modification as viewed from left below. 
         FIG. 29  is a flowchart of a portion of a main process according to a fourth modification. 
         FIG. 30  is a flowchart of a portion of the main process according to the fourth modification continued from  FIG. 29 . 
         FIG. 31  is a flowchart of a portion of the main process according to the fourth modification continued from  FIG. 30 . 
         FIG. 32  is a flowchart of a first tape-end detection according to the fourth modification. 
         FIG. 33  is a flowchart of a second tape-end detection according to the fourth modification. 
         FIG. 34  is a perspective rear view of a discharging unit according to a fifth modification as viewed from left below. 
     
    
    
     DETAILED DESCRIPTION 
     One embodiment of the present disclosure will now be described with reference to the drawings. The drawings are referred to in describing technical features in one or more embodiments of the present disclosure. The illustrated components of the printing device are mere examples, and do not limit the present disclsoure to those components. To simplify the drawings, the gears are shown without teeth. 
     The schematic structure of a printing device  1  will now be described with reference to  FIGS. 1 and 2 . In  FIG. 1 , the lower left, upper right, lower right, upper left, top, and bottom are defined as the left, right, front, rear, and upper and lower sides of the printing device  1 . The printing device  1  is a general-purpose printing device that can receive a variety of cassettes (e.g., receptor, thermal, and laminate cassettes).  FIG. 2  schematically shows a receptor cassette  7 . The cassette can accommodate an elongated print medium selected from, for example, a receptor tape  5 , a die-cut tape  9 , a thermal tape, a stencil tape, a double-sided adhesive tape, and a transparent film tape, which are collectively referred to as tapes. The printing device  1  is connectable to an external terminal (not shown) through, for example, a network or a cable (not shown). Examples of the external terminal include a personal computer and a smartphone. For example, the printing device  1  prints characters on a tape based on print data transmitted from the external terminal. Examples of the characters include letters, numerals, symbols, and figures. 
     As shown in  FIG. 1 , the printing device  1  includes a casing  2  and a cover  3 . The casing  2  is a substantially rectangular prism. The cover  3  is pivotably supported at a rear end portion of the upper surface of the casing  2  to open or close at the upper surface of the casing  2 . The printing device  1  includes an input unit  4  at an upper left corner on the front surface of the casing  2 . The input unit  4  includes buttons with which various items of information are input into the printing device  1 . The printing device  1  has an outlet slit  11  in the front surface of the casing  2  on the right of the input unit  4 . The outlet slit  11  extends vertically, and allows communication inside and outside the casing  2 . The printing device  1  includes a receiving unit  6  in the upper surface of the casing  2 . The receiving unit  6  is recessed from the upper surface of the casing  2  to receive the cassette  7  in a removable manner. 
     As shown in  FIG. 2 , the receiving unit  6  includes a thermal head  60 , a tape driving shaft  61 , a ribbon winding shaft  62 , and a mark sensor  31 . The thermal head  60  is on the left surface of a head holder  69 , and includes a plurality of heating elements arranged vertically. The head holder  69  is a plate extending perpendicularly in the lateral direction in a left portion of the receiving unit  6 . The tape driving shaft  61 , which is rotatable, extends vertically in front of the head holder  69 . The ribbon winding shaft  62 , which is rotatable, extends vertically on the right of the head holder  69 . The mark sensor  31 , which is a transmission photosensor, detects marks  99  (refer to  FIG. 3B ) on the die-cut tape  9  (described later). 
     The receiving unit  6  further includes a platen holder  63  in its left portion. The platen holder  63  has its rear end portion rotatably supported by a shaft  64 , which extends vertically. The platen holder  63  supports a platen roller  65  and a transport roller  66  in a manner rotatable clockwise and counterclockwise in a plan view. The platen roller  65  opposes the thermal head  60  from the left. The transport roller  66  is located in front of the platen roller  65  and opposes the tape driving shaft  61  from the left. As a front end portion of the platen holder  63  swings about the shaft  64  in substantially the lateral direction, the platen roller  65  moves toward (as shown in  FIG. 2 ) and away from (not shown) the thermal head  60 , and the transport roller  66  toward and away from the tape driving shaft  61 . 
     The tape driving shaft  61 , the ribbon winding shaft  62 , the platen roller  65 , and the transport roller  66  are coupled to a transport motor  68  (refer to  FIG. 18 ) via gears (not shown). The transport motor  68  can be driven to rotate in the forward and reverse directions. The forward direction and the reverse direction are the rotation directions opposite to each other. 
     The casing  2  has an internal unit  10  around the rear of the outlet slit  11 . The internal unit  10  includes a cutter unit  100  and a discharging unit  200 . The cutter unit  100  cuts a tape across its width at least partially in the thickness direction. The discharging unit  200  holds the tape that is cut by the cutter unit  100  and discharges the tape out of the printing device  1  through the outlet slit  11 . The cutter unit  100  and the discharging unit  200  will be described in detail later. 
     The cassette  7  will now be described with reference to  FIG. 2 . The cassette  7  includes a case  70  as a box. The case  70  includes a tape driving roller  72  and support holes  75  to  78 . The tape driving roller  72  is cylindrical and extends vertically at a left front corner of the case  70 , and is rotatably supported by the case  70 . The tape driving roller  72  has its left end portion exposed outside from the case  70 . 
     The support hole  75  extends vertically through the case  70  to rotatably support a first tape spool  41 . The first tape spool  41  extends vertically, and receives a first tape wound around the spool. The support hole  77  extends vertically through the case  70  to rotatably support a ribbon spool  43 . The ribbon spool  43  extends vertically, and receives an ink ribbon  8  wound around the spool before printing. The support hole  78  extends vertically through the case  70  to rotatably support a ribbon winding spool  45 . The ribbon winding spool  45  is cylindrical and extends vertically, and receives the ink ribbon  8  wound around the spool after printing. The support hole  76  extends vertically through the case  70  to rotatably support a second tape spool (not shown). The second tape spool extends vertically, and receives a second tape wound around the spool. 
     The case  70  has a head opening  71  and a pair of holes  79 . The head opening  71  extends vertically through a left portion of the case  70 . The tape is exposed in a left front portion of the head opening  71 . The pair of holes  79  extend vertically through the case  70 . The holes  79  oppose each other to have the tape fed from the first tape spool  41  between them. 
     The cassette  7  may accommodate a selected one of the tapes in the case  70  and contain or remove the ink ribbon  8  to be any of the above thermal, receptor, laminate, and tube cassettes. 
     For the receptor cassette  7 , the support hole  75  supports the first tape spool  41  around which the receptor tape  5  or the die-cut tape  9  as a first tape is wound. The receptor cassette  7  does not use a second tape, and thus the support hole  76  does not support the second tape spool. The support hole  77  supports the ribbon spool  43 . 
     For a thermal cassette (not shown), the support hole  75  supports the first tape spool  41  around which a thermal tape or a stencil tape as a first tape is wound. The support hole  76  does not support a second tape. The support hole  77  does not support the ribbon spool  43 . 
     For a laminate cassette (not shown), the support hole  75  supports the first tape spool  41  around which a transparent film tape as a first tape is wound. The support hole  76  supports a second tape spool around which a double-sided adhesive tape as a second tape is wound. The support hole  77  supports the ribbon spool  43 . 
     Such tapes including the receptor tape  5 , the die-cut tape  9 , the thermal tape (not shown), the transparent film tape (not shown), and the double-sided adhesive tape (not shown) will now be described with reference to  FIGS. 3A and 3B . As shown in  FIG. 3A , the receptor tape  5  includes a backing  51  and a release paper  52 . The backing  51  includes an adhesive layer  53 . The adhesive layer  53  is a layer of an adhesive (the same for an adhesive layer  93  described later). The surface of the backing  51  opposite to the adhesive layer  53  is a print surface on which characters are to be printed. The release paper  52  is releasably bonded to the backing  51  with the adhesive layer  53  between the release paper  52  and the backing  51 . 
     As shown in  FIG. 3B , the die-cut tape  9  includes a plurality of backings  91  and a release paper  92 . The plurality of backings  91  each include an adhesive layer  93 . The release paper  92  is elongated. The backings  91 , which are bonded to the release paper  92  in a releasable manner, are at regular intervals in the longitudinal direction of the release paper  92 , with the adhesive layers  93  between the backings  91  and the release paper  92 . The surface of each backing  91  opposite to the adhesive layer  93  is a print surface on which characters are to be printed. The marks  99  are on the release paper  92  without overlapping the backings  91 . The marks  99  are through-holes at regular intervals in the longitudinal direction. The receptor tape  5  and the die-cut tape  9  have characters printed with the ink of the ink ribbon  8  thermally transferred to the print surfaces of the backings  51  and  91  by the thermal head  60 . 
     The thermal tape (not shown) has characters printed with heat applied from the thermal head  60 . The stencil tape (not shown) forms holes shaped as characters with heat applied by the thermal head  60 . Printing in the present embodiment includes forming holes shaped as characters in the tape. 
     The transparent film tape has characters printed with the ink of the ink ribbon  8  thermally transferred to the print surface by the thermal head  60 . A double-sided adhesive tape is bonded to the print surface of the printed transparent film tape. The tape including the double-sided adhesive tape bonded to the printed transparent film tape is hereafter also referred to as a laminate tape. 
     In the present embodiment, the die-cut tape  9  is more flexible than the receptor tape  5  and the thermal tape. The receptor tape  5  and the thermal tape are more flexible than the laminate tape. The laminate tape is more flexible than the stencil tape. The flexibility is determined by, for example, the thickness or the Young&#39;s modulus of the tape. For example, a tape with a larger thickness or a higher Young&#39;s modulus bends less. The receptor tape  5 , the thermal tape, the stencil tape, and the laminate tape are more fragile than the die-cut tape  9 . The fragility is determined by, for example, the surface material of the tape (including with or without a coating) or the surface profile of the tape (including with or without irregularity). For example, the tape with a harder surface is less fragile. The tape is not limited to those listed above, and may be, for example, a tube tape. The flexibility and the fragility of the tapes are described in mere examples. 
     For example, the printing of the printing device  1  with the receptor cassette  7  will now be described with reference to  FIGS. 1 and 2 . With the cover  3  open, the platen roller  65  is spaced from the thermal head  60  to the left, and the transport roller  66  from the tape driving shaft  61  to the left. In this state, a user attaches the cassette  7  to the receiving unit  6 . When the cassette  7  is attached to the receiving unit  6 , the ribbon winding shaft  62  is positioned in the ribbon winding spool  45 . The tape driving shaft  61  is positioned in the tape driving roller  72 . The head holder  69  is positioned in the head opening  71 . A light emitter and a light receiver of the mark sensor  31  enter the case  70  through the holes  79 . The light emitter and the light receiver of the mark sensor  31  oppose each other with the tape fed from the first tape spool  41  between them. The receptor tape  5  and the ink ribbon  8  are placed to have their width in the vertical direction. 
     With the cover  3  closed, the platen roller  65  moves toward the thermal head  60  and the transport roller  66  toward the tape driving shaft  61  from the left. Thus, the platen roller  65  places the ink ribbon  8  over the print surface of the backing  51  of the receptor tape  5  and presses the ink ribbon  8  against the thermal head  60 . The transport roller  66  presses the receptor tape  5  against the tape driving roller  72 . The state where the cassette  7  is attached to the receiving unit  6  with the cover  3  closed is referred to as a print ready state. 
     The position of the platen roller  65  holding the tape together with the thermal head  60  in a transport direction is referred to as a print position P 1 . The position of the transport roller  66  holding the tape together with the tape driving roller  72  in the transport direction is referred to as a first holding position P 2 . The load with which the platen roller  65  and the thermal head  60  hold the tape between them is referred to as a holding load at the print position P 1 . The load with which the transport roller  66  and the tape driving roller  72  hold the tape between them is referred to as a holding load at the first holding position P 2 . The first holding position P 2  is downstream from the print position P 1  in the transport direction. The holding load at the first holding position P 2  is smaller than the holding load at the print position P 1 . 
     The printing device  1  can transport the tape by rotating the tape driving shaft  61 , the platen roller  65 , and the transport roller  66 . To transport in the present embodiment includes forward transport and reverse transport. The forward transport refers to transporting the tape downstream in the transport direction. More specifically, the forward transport is to transport the tape by pulling it out of the first tape spool  41 . The reverse transport refers to transporting the tape upstream in the transport direction. 
     To transport the tape forward, the printing device  1  drives the transport motor  68  (refer to  FIG. 18 ) forward, to rotate the tape driving shaft  61  counterclockwise in a plan view, and to rotate the platen roller  65  and the transport roller  66  clockwise in a plan view. In this case, the tape driving roller  72  rotates counterclockwise in a plan view. The tape is transported forward between the transport roller  66  and the tape driving roller  72  (or transported downstream in the transport direction). The receptor tape  5  is transported forward between the platen roller  65  and the thermal head  60 . 
     To transport the tape reversely, the printing device  1  drives the transport motor  68  reversely, to rotate the tape driving shaft  61  clockwise in a plan view, and to rotate the platen roller  65  and the transport roller  66  counterclockwise in a plan view. In this case, the tape driving roller  72  rotates clockwise in a plan view. The tape is reversely transported between the transport roller  66  and the tape driving roller  72  (or transported upstream in the transport direction). The receptor tape  5  is reversely transported between the platen roller  65  and the thermal head  60 . Transporting the tape forward is hereafter also referred to as forward transport, and transporting the tape reversely is also referred to as reverse transport. 
     The printing device  1  detects the tape end before starting printing. To detect the tape end, the printing device  1  controls the transport motor  68  to at least transport the tape reversely, selectively from the forward and reverse transports. Thus, the tape end is detected. 
     The printing device  1  detecting the tape end starts printing. The printing device  1  prints on the tape while transporting the tape forward. More specifically, the printing device  1  heats the ink ribbon  8  with heat from the thermal head  60 . The ink of the ink ribbon  8  is thermally transferred to the print surface of the backing  51  of the receptor tape  5  to print the characters at the print position P 1 . The printing device  1  drives the transport motor  68  forward to rotate the ribbon winding shaft  62 , the tape driving shaft  61 , the platen roller  65 , and the transport roller  66 . In response to rotation of the ribbon winding shaft  62 , the ribbon winding spool  45  rotates to wind the ink ribbon  8  around the spool. In response to rotation of the tape driving shaft  61 , the tape driving roller  72  rotates counterclockwise in a plan view. In response to rotation of the tape driving roller  72  and the transport roller  66 , the receptor tape  5  is transported forward between the transport roller  66  and the tape driving roller  72  at the first holding position P 2 . In response to rotation of the platen roller  65 , the receptor tape  5  is transported forward between the platen roller  65  and the thermal head  60 . 
     The printed portion of the receptor tape  5  is discharged from the cassette  7 , and cut by the cutter unit  100  (described later). The cut piece of the receptor tape  5  is discharged through the outlet slit  11  out of the printing device  1  by the discharging unit  200 . 
     The structure of the cutter unit  100  will now be described in detail with reference to  FIGS. 4 to 8 . In  FIGS. 5 and 6 , a second frame  109  and coupling gears  105 B,  125 , and  126  included in the cutter unit  100  are not shown (also in  FIGS. 9 and 10 ). The cutter unit  100  is accommodated in the casing  2  at the rear of the outlet slit  11  and in front of the transport roller  66 . 
     As shown in  FIG. 4 , the cutter unit  100  includes a fixing frame  106 . The fixing frame  106  is fixed inside the casing  2  (refer to  FIG. 1 ). The fixing frame  106  includes a first frame  118  and a second frame  109 . The second frame  109  is rectangular in a rear view, and drawn with two-dot chain lines. The first frame  118  is arranged in front of the second frame  109 , and includes a first slit  118 A. The first slit  118 A extends through the first frame  118  in a front-rear direction, and is arranged behind a second slit  201  (described later). The tape passes through the first slit  118 A. A guide  147  is arranged at a left opening end of the first slit  118 A. The guide  147  includes a plurality of ribs protruding rightward and arranged vertically. The guide  147  guides the tape transported forward toward the second slit  201 . 
     A mount base  173  is fixed to the first frame  118 . The mount base  173  is a plate. The mount base  173  has a lower end  173 A below the first slit  118 A. The lower end  173 A includes a protrusion  178 . The protrusion  178  protrudes forward from the lower end  173 A. The protrusion  178  has a fixing hole. The fixing hole is circular in a front view. A shaft  177  is fixed to the fixing hole. The shaft  177  extends in the front-rear direction. The mount base  173  includes an elongated portion  173 C and a mount board  173 D. The elongated portion  173 C extends between the lower end  173 A and an upper end  173 B of the mount base  173 . The elongated portion  173 C is fixed to the first frame  118  with two screws  176  on the left of the first slit  118 A. The mount board  173 D protrudes forward from the right end of the elongated portion  173 C, and is rectangular and long vertically in a right side view. The tape upstream from (or at the rear of) the guide  147  in the transport direction is placed on the mount board  173 D. 
     A cutter motor  105  is fixed to the lower end of the second frame  109  on the right of the first slit  118 A. The cutter motor  105  has an output shaft  105 A extending upward in the cutter motor  105 . A coupling gear  105 B is fixed to the output shaft  105 A. 
     A rotator  150  is located on the lower right and behind the cutter motor  105 . The rotator  150  is located rightward from the shaft  177 , and has a circular shape in a front view. The rotator  150  is rotatably supported by a shaft  159  (refer to  FIG. 8 ). The shaft  159  extends through the first frame  118  in the front-rear direction, and is fixed to the first frame  118 . 
     A gear train  124  is located rightward from the output shaft  105 A. The gear train  124  includes coupling gears  125  to  127  and a cam gear  128 . The coupling gears  125  to  127  and the cam gear  128  are arranged from the above vertically, and axially rotatable in the front-rear direction. The coupling gears  125  to  127  are double gears. The coupling gears  125  and  126  are rotatably supported by the second frame  109 . The coupling gear  125  meshes with the coupling gear  105 B. The coupling gear  127  is rotatably supported by the first frame  118 . The cam gear  128  is driven lastly in the gear train  124 , and integral with the peripheral surface of the rotator  150 . The coupling gears  125  to  127  and the cam gear  128  mesh with one another. The driving force of the cutter motor  105  is thus transmitted to the rotator  150  via the coupling gear  105 B and the gear train  124 . 
     As shown in  FIGS. 5 and 6 , the rotator  150  has groove cams  151  and  152 . The groove cams  151  and  152  are open to the front and are continuous and integral with each other. The groove cam  151  extends between its two ends, or from a starting end  151 A to a terminal end  151 B, toward the shaft  159 . The groove cam  152  extends from the starting end  151 A in an arc about the shaft  159  clockwise in a front view. The groove cams  151  and  152  are hereafter collectively referred to as a groove cam  153 . 
     A support shaft  119  is located on the upper left of the rotator  150 . The support shaft  119  protrudes forward from the first frame  118  to swingably support a first link  110 . The first link  110  opposes the first frame  118  with a space in the front-rear direction, and extends vertically. The first link  110  has a portion extending forward, and then being bent downward below the support shaft  119 . The first link member  110  has a vertically extending portion above the support shaft  119 . The first link member  110  has a lower end portion  116  arranged in front of the rotator  150 . A pin  111  is arranged on the lower end portion  116 . The pin  111  protrudes rearward from the lower end portion  116  and is engaged with the groove cam  153 . As the rotator  150  rotates, the groove cam  151  slides on the pin  111  to allow the first link  110  to swing about the support shaft  119 . 
     A pin  112  and a recess  139  are arranged on an upper end portion  117  of the first link  110 . The pin  112  protrudes rearward from the upper end portion  117  into a through-hole  197  (refer to  FIG. 8 ). The through-hole  197  extends through the first frame  118  in the front-rear direction. The recess  139  is recessed clockwise about the support shaft  119  in a front view. 
     A second link  120  is arranged between the first link  110  and the first frame  118 . The second link  120  is swingably supported by a support shaft  129 . The support shaft  129  protrudes forward from the first frame  118  rightward from the upper end  173 B. The second link  120 , which is a sector-shaped plate about the support shaft  129 , opposes and is in contact with the front of the first frame  118 . An end portion  121  of the second link  120  away from the support shaft  129  opposes the rear of the upper end portion  117 . 
     As shown in  FIG. 7 , the end portion  121  has a groove cam  122 . The groove cam  122  is engaged with the pin  112 , and has cams  122 A and  122 B. The cams  122 A and  122 B are continuous and integral grooves and are arranged in this order from the support shaft  129 . The cam  122 A extends away from the support shaft  129 , and the cam  122 B extends from the cam  122 A further away from the support shaft  129 . The cams  122 A and  122 B extend in directions crossing each other. As the first link  110  swings, the pin  112  slides on the groove cam  122  to allow the second link  120  to swing about the support shaft  129 . A pin  113  is arranged at the end portion  121 . The pin  113  shown in  FIG. 7  protrudes forward from the end portion  121  and is arranged inward from the recess  139 . 
     As shown in  FIGS. 5 and 6 , a movable holder  130  is arranged in front of the second link  120 . The movable holder  130  is swingably supported by the shaft  177 . The movable holder  130  has a lower end portion  137  swingably coupled to the shaft  177  in front of the lower end  173 A of the mount base  173 . The movable holder  130  has an upper end portion  138  opposing the front of the upper end portion  117  of the first link  110 . 
     The movable holder  130  includes a fastening portion  134 , a partial-cut blade  103 , and an extension  131 . The fastening portion  134  extends between the lower end portion  137  and the upper end portion  138 , and opposes the rear of the cutter motor  105  (refer to  FIG. 4 ). The partial-cut blade  103  is a plate having a thickness in the front-rear direction, and fastened to the rear surface of the fastening portion  134 . The left end of the partial-cut blade  103  is a sharp cutting edge  103 A. The cutting edge  103 A protrudes leftward in a swing direction of the movable holder  130  to protrude slightly from the elongated portion  173 C. The cutting edge  103 A opposes the mount board  173 D of the mount base  173  in the swing direction of the movable holder  130 . The extension  131  protrudes from the upper end portion  138  leftward in the swing direction of the movable holder  130 , and opposes the mount board  173 D in the swing direction of the movable holder  130 . The distal end (or the left end) of the extension  131  slightly extends leftward from the cutting edge  103 A. 
     As shown in  FIG. 7 , the upper end portion  138  has a groove cam  133 . The groove cam  133  is engaged with the pin  113 , and has grooves  133 A and  133 B. The grooves  133 A and  133 B are continuous and integral with each other. The groove  133 A extends away from the shaft  177  (refer to  FIG. 6 ). The groove  133 B extends from the groove  133 A further away from the shaft  177 . The grooves  133 A and  133 B extend in different directions. 
     As the second link  120  swings, the pin  113  slides on the groove cam  133  to allow the movable holder  130  to swing about the shaft  177  between the partial-cut position (refer to  FIG. 9 ) and a retracted position (refer to  FIG. 5 ). The partial-cut position is a swing position of the movable holder  130  at which the distal end of the extension  131  abuts against the mount board  173 D. The retracted position is a swing position of the movable holder  130  retracted rightward from the partial-cut position. At the retracted position, the movable holder  130  has its cutting edge  103 A spaced to the right from the tape on the mount board  173 D. The cutting edge  103 A is rightward from the distal end of the extension  131 . Thus, a gap forms between the cutting edge  103 A and the mount base  173  when the movable holder  130  is at the partial-cut position. The gap in the swing direction of the movable holder  130  is smaller than the thickness of the tape. 
     As shown in  FIG. 8 , a fixed blade  179  and a full-cut blade  140  are to at the rear of the first frame  118 . The fixed blade  179  is fixed to the first frame  118  on the right of the first slit  118 A. The fixed blade  179  is a rectangular plate extending vertically in a rear view. The fixed blade  179  has a lower end  179 A to which a shaft  199  is fixed. The shaft  199  extends in the front-rear direction and protrudes rearward from the first frame  118 . The fixed blade  179  includes an edge  179 C. The edge  179 C is at the left end of the fixed blade  179  and extends vertically. The tape is placed on the edge  179 C between the lower end  179 A and an upper end  179 B of the fixed blade  179 . 
     The full-cut blade  140  is swingably supported by the shaft  199  between the first frame  118  and the fixed blade  179  in the front-rear direction. The full-cut blade  140  is an L-shaped plate in a front view. The full-cut blade  140  includes arms  141  and  142 . The arm  141  extends upward from the shaft  199 . The arm  142  extends rightward from the shaft  199 . A sharpened edge  141 A extends in the longitudinal direction of the arm  141  at the end of the arm  141  in the direction counterclockwise about the shaft  199  in a rear view. The edge  141 A opposes the edge  179 C of the fixed blade  179  in the swing direction of the full-cut blade  140 . 
     The arm  142  has a groove cam  144  in its right portion. The groove cam  144  is open in the front-rear direction and engaged with a pin  114 . The pin  114  protrudes rearward from the rotator  150  into an insertion hole  115 . The insertion hole  115  extends through the first frame  118  in the front-rear direction, and extends in an arc about the shaft  159 . 
     The groove cam  144  has an arc-shaped cam  145  and an elongated cam  146 . The arc-shaped cam  145  and the elongated cam  146  are continuous and integral grooves. The arc-shaped cam  145  extends between its two ends, or from a starting end  145 A to a terminal end  145 B counterclockwise in an arc about the shaft  159  in a rear view. The elongated cam  146  linearly extends toward the shaft  199  from the starting end  145 A of the arc-shaped cam  145 . 
     As the rotator  150  rotates, the pin  114  slides on the elongated cam  146  to allow the full-cut blade  140  to swing about the shaft  199  between the full-cut position (refer to  FIG. 12 ) and a separate position (refer to  FIG. 8 ). The full-cut position is a swing position of the full-cut blade  140  at which the edge  141 A is located rightward beyond the edge  179 C of the fixed blade  179 . The separate position is a swing position of the full-cut blade  140  at which the edge  141 A is spaced from the tape on the edge  179 C leftward. The swing direction of the full-cut blade  140  is parallel to the swing direction of the movable holder  130 . 
     Partial cutting by the cutter unit  100  will now be described with reference to  FIGS. 6, and 9 to 11 . Partial cutting is to cut a tape across its width at least partially in the thickness direction. Before partial cutting is started, the tape is placed on the mount board  173 D after transported by a plurality of rollers of the printing device  1  to the position passing the first slit  118 A. Before partial cutting is started, the cutter unit  100  is in an initial state (refer to  FIGS. 6 and 8 ). When the cutter unit  100  is in the initial state, the pin  111  is in contact with the starting end  151 A. The pin  112  is in contact with the upper end of the cam  122 A. The pin  113  is in contact with the lower portion of the groove  133 A. The movable holder  130  is at the retracted position. The pin  114  is in contact with the starting end  145 A. The full-cut blade  140  is at the separate position. 
     When the cutter motor  105  (refer to  FIG. 4 ) starts being driven, the coupling gear  105 B rotates together with the output shaft  105 A. The gear train  124  transmits the driving force of the cutter motor  105  to the rotator  150  to allow the rotator  150  to rotate clockwise in a front view (arrow H 0 ). The groove cam  151  of the rotator  150  rotates while pressing the pin  111  rightward (refer to  FIGS. 6 and 10 ). Thus, the first link  110  swings counterclockwise in a front view (arrow H 1 ). As the first link  110  swings, the pin  112  swings while pressing the cam  122 A of the groove cam  122  leftward. Thus, the second link  120  swings clockwise in a front view while sliding on the first frame  118  (arrow H 2 ). The pin  112  swings relative to the second link  120  upward from the recess  139 . As the second link  120  swings, the pin  113  presses the groove  133 A of the groove cam  133  leftward. Thus, the movable holder  130  swings from the retracted position toward the partial-cut position (arrow H 3 ). The pin  113  slides from one end of the groove cam  133  in the longitudinal direction (direction of arrow V 1  in  FIGS. 7 and 11 ) to another end in the longitudinal direction (direction of arrow V 2 ). 
     While the movable holder  130  is swinging toward the partial-cut position, the pin  114  (refer to  FIG. 8 ) slides from the starting end  145 A to the terminal end  145 B of the arc-shaped cam  145  without pressing the full-cut blade  140 . Thus, the full-cut blade  140  remains stationary at the separate position. 
     As shown in  FIGS. 9 to 11 , while the pin  111  is sliding toward the terminal end  151 B as the rotator  150  rotates, the pin  112  slides on the cam  122 B in place of the cam  122 A, and the pin  113  slides on the groove  133 B in place of the groove  133 A. As the movable holder  130  swings continuously, the cutting edge  103 A starts cutting the tape gradually from below. 
     When the cutting edge  103 A starts cutting the tape, the sliding pin  112  slides on the cam  122 B while swinging in the direction away from the support shaft  129 . After the tape is cut up to the upper end and the extension  131  abuts against the mount board  173 D, the movable holder  130  reaches the partial-cut position. The portion of the tape located in the clearance between the cutting edge  103 A and the mount base  173  (or a portion of the tape in the width direction) remains uncut. Thus, the partial-cut blade  103  partially cuts the tape across the width with the cutting edge  103 A. The cutter motor  105  stops being driven. The position in the transport direction at which the partial-cut blade  103  partially cuts the tape across the width is hereafter referred to as a second cut position P 4  (refer to  FIG. 2 ). The second cut position P 4  is downstream from a first cut position P 3  (described later) in the transport direction. 
     The cutter motor  105  is driven in the opposite direction from the start of partial cutting. The rotator  150 , the first link  110 , the second link  120 , and the movable holder  130  operate in the opposite direction from the start of partial cutting. The pin  113  returns inward from the recess  139  of the upper end portion  117 . The cutter unit  100  returns to the initial state. The partial cutting is complete when the cutter motor  105  stops being driven. 
     Full cutting by the cutter unit  100  will now be described with reference to  FIGS. 6, 8, and 12 . Full cutting is to cut a tape across its width fully in the thickness direction. Before full cutting is started, the cutter unit  100  is in the initial state. 
     The cutter motor  105  starts rotating in the opposite direction from the start of partial cutting. Thus, the rotator  150  rotates counterclockwise in a front view (arrow F 0 ). The pin  111  slides on the groove cam  152  in the groove cam  153  (refer to  FIG. 6 ) without being pressed. The groove cam  153  has the groove cam  152  (refer to  FIG. 6 ) sliding on the pin  111  without pressing the pin  111 . Thus, the movable holder  130  remains stationary at the retracted position. 
     As the rotator  150  rotates, the pin  114  slides on the elongated cam  146  while pressing the elongated cam  146  downward. Thus, the full-cut blade  140  starts swinging toward the full-cut position (arrow F 1 ). As the pin  114  slides on the elongated cam  146 , the edge  141 A of the full-cut blade  140  holds the tape gradually from below together with the edge  179 C of the fixed blade  179  between the edges  141 A and  179 C. The tape is cut gradually from its lower edge into two pieces. After the tape is cut across in the vertical direction, the full-cut blade  140  reaches the full-cut position. The full-cut blade  140  fully cuts the tape with the edges  141 A and  179 C. The cutter motor  105  stops being driven. The position at which the full-cut blade  140  fully cuts the tape in the transport direction is hereafter referred to as a first cut position P 3 . The first cut position P 3  is downstream from the first holding position P 2  in the transport direction. 
     The cutter motor  105  is driven in the opposite direction from the start of full cutting. The rotator  150  and the full-cut blade  140  operate in the opposite direction from the start of full cutting, and the cutter unit  100  returns to the initial state. Full cutting is complete when the cutter motor  105  stops being driven. 
     The structure of the discharging unit  200  will now be described in detail with reference to  FIGS. 13 to 17 .  FIG. 14  does not show a third frame  213 , a guide frame  214 , and a position sensor  295  included in the discharging unit  200 . The discharging unit  200  is accommodated in the casing  2  at the rear of the outlet slit  11  and downstream from (or, in front of) the cutter unit  100  in the transport direction (refer to  FIG. 2 ). 
     As shown in  FIGS. 13 and 14 , the discharging unit  200  includes a fixing frame  210 , a discharging roller  220 , opposing rollers  230 , a discharge motor  299 , a first coupling mechanism  280 , a moving mechanism  250 , a second coupling mechanism  240 , and a position sensor  295 . The fixing frame  210  is fixed inside the casing  2  at the rear of the outlet slit  11 , and includes a first frame  211 , a second frame  212 , and a third frame  213 . 
     The first frame  211  is arranged in a lower portion of the discharging unit  200 , and extends in a direction perpendicular to the vertical direction. The second frame  212  and the third frame  213  extend upward from the first frame  211  in a direction perpendicular to the lateral direction. The third frame  213  is on the left of the second frame  212 , and opposes the second frame  212  with a predetermined clearance between the frames  212  and  213 . The clearance between the second frame  212  and the third frame  213  defines the second slit  201 . The second slit  201  is arranged in front of the first slit  118 A, and at the rear of the outlet slit  11  (refer to  FIGS. 16 and 17 ). The tape is transported forward in the order of the first slit  118 A, the second slit  201 , and the outlet slit  11  from upstream (from the rear) to downstream (to the front) in the transport direction. 
     In one example, the receptor tape  5  passes through the first slit  118 A, the second slit  201 , and the outlet slit  11  with the backing  51  facing rightward and the release paper  52  facing leftward. In another example, the die-cut tape  9  passes through the first slit  118 A, the second slit  201 , and the outlet slit  11  with the backing  91  facing rightward and the release paper  92  facing leftward. 
     The discharging roller  220  is on the left of the second slit  201  downstream from (in front of) the transport roller  66  and the tape driving shaft  61  in the transport direction (refer to  FIGS. 16 and 17 ). More specifically, the discharging roller  220  faces the release paper  52  of the receptor tape  5 . The discharging roller  220  is a cylindrical elastic member extending vertically and is arranged in a hole  213 A (refer to  FIGS. 16 and 17 ). The hole  213 A extends through a rear end portion of the third frame  213  in the lateral direction, and is rectangular and long vertically in a side view. 
     The opposing rollers  230  are on the right of the second slit  201  downstream from (in front of) the transport roller  66  and the tape driving shaft  61  in the transport direction (refer to  FIGS. 16 and 17 ). More specifically, the opposing rollers  230  face the backing  51  of the receptor tape  5 . The opposing rollers  230  are on the right of the discharging roller  220  and oppose the discharging roller  220  with the second slit  201  between the roller  220  and the opposing rollers  230 . The opposing rollers  230  are a plurality of cylindrical elastic members extending vertically and are arranged in a hole  212 A. The plurality of cylindrical elastic members are vertically arranged at regular intervals. The hole  212 A extends through the rear end portion of the second frame  212  in the lateral direction, and is rectangular and long vertically in a side view. A left end portion of each opposing roller  230  is located leftward beyond the left surface of the second frame  212 . A rotation shaft  230 A is rotatably received in a center hole of each opposing roller  230 . The rotation shaft  230 A is columnar and extends vertically. The two ends of the rotation shaft  230 A are fixed to the inner walls above and below the hole  212 A. 
     The discharge motor  299 , which is a DC motor, is fixed to the left end portion of the first frame  211 . The discharge motor  299  has an output shaft  299 A extending downward in the discharge motor  299 . The discharge motor  299  can rotate the output shaft  299 A counterclockwise (arrow R 1 ) and clockwise (arrow R 2 ) in a bottom view. Rotating the output shaft  299 A counterclockwise by the discharge motor  299  in a bottom view refers to forward rotation. Rotating the output shaft  299 A clockwise by the discharge motor  299  in a bottom view refers to reverse rotation. 
     The first coupling mechanism  280  is arranged in a lower portion of the discharging unit  200  to couple the discharge motor  299  and the discharging roller  220  in a manner drivable together. The first coupling mechanism  280  includes coupling gears  281  to  284 , a moving gear  285 , and a rotation shaft  285 A. The rotation axes of the coupling gears  281  to  284  and the moving gear  285  extend vertically. The coupling gear  281  is a spur gear fixed to a lower end portion of the output shaft  299 A. 
     The coupling gear  282 , which is a double gear including a large-diameter gear and a small-diameter gear, is on the front right of the coupling gear  281 . The large-diameter gear of the coupling gear  282  has its rear left end meshing with a front right end of the coupling gear  281 . A rotation shaft  282 A is rotatably received in the center hole of the coupling gear  282 . The rotation shaft  282 A is cylindrical and fixed to the first frame  211  and extending downward from the first frame  211 . The coupling gear  283 , which is a double gear including a large-diameter gear and a small-diameter gear, is on the front right of the coupling gear  282 . The large-diameter gear of the coupling gear  283  has its rear left end meshing with the front right end of the small-diameter gear of the coupling gear  282 . A rotation shaft  283 A has a lower end portion received and fixed in the center hole of the coupling gear  283 . The rotation shaft  283 A extends vertically and through the first frame  211 . The rotation shaft  283 A has an upper end portion extending upward from the upper surface of the first frame  211 . The rotation shaft  283 A is rotatably supported by the first frame  211 . The rotation shaft  283 A has a columnar portion above the first frame  211 . The rotation shaft  283 A has a D-shaped portion below the first frame  211 . 
     The coupling gear  284 , which is a double gear including a large-diameter gear and a small-diameter gear, is on the right of the coupling gear  283 . The large-diameter gear of the coupling gear  284  has its left end meshing with a right end of the small-diameter gear of the coupling gear  283 . A rotation shaft  284 A is rotatably received in the center hole of the coupling gear  284 . The rotation shaft  284 A is columnar and fixed to the first frame  211  and extends downward from the first frame  211 . The moving gear  285  is a spur gear arranged at the rear of the coupling gear  284 . The moving gear  285  has its front end meshing with a rear end of the small-diameter gear of the coupling gear  284 . The rotation shaft  285 A extends parallel to the rotation shaft  230 A. The rotation shaft  285 A has a D-shaped lower end portion. The portion of the rotation shaft  285 A other than the lower end portion is columnar. The lower end portion of the rotation shaft  285 A extends downward from the first frame  211 , and is received and fixed in the center hole of the moving gear  285 . The rotation shaft  285 A has an upper end portion extending to the upper end of the hole  213 A, and is received and fixed in the center hole of the discharging roller  220 . 
     The first frame  211  has a guide hole  211 A. The guide hole  211 A extends vertically through a portion of the first frame  211  at the rear of the coupling gear  284 , and extends in an arc (refer to  FIG. 17 ) along a peripheral surface  284 B having the teeth of the coupling gear  284  in a plan view. In  FIG. 17 , the broken lines indicate a portion of the guide hole  211 A covered by components including the discharging roller  220 . The rotation shaft  285 A has a portion received in the guide hole  211 A above the moving gear  285 . The rotation shaft  285 A is movable inside and along the guide hole  211 A. 
     The moving mechanism  250  moves the discharging roller  220  toward or away from the opposing rollers  230 . In the present embodiment, the moving mechanism  250  moves the discharging roller  220  to a position on the left of and adjacent to the opposing rollers  230  (hereafter referred to as a nip position; refer to  FIGS. 13 and 16 ) and to a position spaced leftward from the opposing rollers  230  (hereafter referred to as a release position; refer to  FIGS. 14 and 17 ). 
     The moving mechanism  250  includes a rotator  251 , an eccentric member  252 , and a roller holder  255 . The rotator  251  is cylindrical and arranged on the side of the first frame  211  opposite to the coupling gear  283 . The upper end portion of the rotation shaft  283 A is rotatably received in the center hole of the rotator  251 . The eccentric member  252  is columnar and extends upward from a portion of the rotator  251  eccentric to the rotation shaft  283 A. The eccentric member  252  thus rotates about the rotation shaft  283 A in a plan view as the rotator  251  rotates. 
     An enlarged-diameter portion  253  is arranged on the lower end portion of the eccentric member  252  to fix the eccentric member  252  to the upper surface of the rotator  251 . The enlarged-diameter portion  253  has a larger diameter than the eccentric member  252 , and is semicircular in a plan view. The enlarged-diameter portion  253  has a recess  253 A (refer to  FIG. 13 ). The recess  253 A is recessed from the arc of the enlarged-diameter portion  253  toward the rotation shaft  283 A (or toward the rotation center of the eccentric member  252 ). An urging member  297  is engageable with the recess  253 A. The urging member  297  is a torsion spring fixed to a fixing portion  213 B. The fixing portion  213 B is arranged on the upper surface of the third frame  213  adjacent to the upper front of the rotator  251 . The urging member  297  has its two ends extending rearward. The enlarged-diameter portion  253  on the right of the rotation shaft  283 A has the recess  253 A open rightward, with which the end of the urging member  297  is engaged from the right (refer to  FIG. 13 ). The enlarged-diameter portion  253  on the left of the rotation shaft  283 A has the recess  253 A open leftward, from which the end of the urging member  297  is spaced (not shown). 
     As shown in  FIG. 15 , the roller holder  255  includes a first member  260 , a second member  270 , and an urging member  256  (refer to  FIG. 14 ). The first member  260  is U-shaped, and open rightward in a front view. An upper wall  260 A and a lower wall  260 B of the first member  260  each have an engagement hole  262 . The engagement hole  262  in the upper wall  260 A is not shown. Each engagement hole  262  extends vertically through the left end portion of the wall  260 A or  260 B and is rectangular and long in the lateral direction in a plan view. The wall  260 B has a recess  263 . The recess  263  is recessed leftward from the right end of the wall  260 B. 
     A protrusion  265  and a detection piece  269  are arranged on a left wall  260 C of the first member  260 . The protrusion  265  protrudes forward from the right end of the front surface of the wall  260 C. The protrusion  265  has a first support hole  266 . The first support hole  266  extends vertically through the protrusion  265  and is long in the front-rear direction. The eccentric member  252  (refer to  FIG. 13 ) is received in the first support hole  266 . The first support hole  266  supports the eccentric member  252  in a manner movable in the front-rear direction. The detection piece  269  extends leftward from the upper end of the left surface of the wall  260 C and then upward. 
     The second member  270  is U-shaped, and open rightward in a front view, and smaller than the first member  260 . The second member  270  is arranged in the recess of the first member  260 . The discharging roller  220  (refer to  FIG. 14 ) is arranged in the recess of the second member  270 , or between an upper wall  270 A and a lower wall  270 B of the second member  270 . The right end of the second member  270  is the right end of the roller holder  255 . The right end of the discharging roller  220  is located rightward beyond the right end of the roller holder  255 . The walls  270 A and  270 B each have a second support hole  271 . The second support hole  271  extends vertically through the right end portion of the corresponding wall  270 A or  270 B, and is long in the front-rear direction. The rotation shaft  285 A is received in the second support holes  271 . The second support holes  271  support the rotation shaft  285 A in a manner rotatable and movable in the front-rear direction. 
     Each of the walls  270 A and  270 B includes an engagement tab  274 . The engagement tab  274  in the wall  270 A is not shown. The engagement tabs  274  protrude leftward from the left ends of the walls  270 A and  270 B as hooks that face away from each other. The hook of each engagement tab  274  is engaged with the corresponding engagement hole  262  movably in the lateral direction. Thus, the second member  270  is supported by the first member  260  in a manner movable in the lateral direction (or toward or away from the opposing rollers  230 ). 
     As shown in  FIG. 14 , the urging member  256  is arranged between the right surface of the wall  260 C and the left surface of a left wall  270 C of the second member  270 . The urging member  256  is a helical compression spring that urges the second member  270  rightward toward the opposing rollers  230  from the first member  260 . The second member  270 , while receiving no leftward force, is maintained by the urging force of the urging member  256  at the position at which the hook of each engagement tab  274  is in contact with the right end of the corresponding engagement hole  262 . 
     As shown in  FIGS. 13, 16, and 17 , the roller holder  255  is arranged inside the guide frame  214  on a rear portion of the left surface of the third frame  213 . The guide frame  214  extends leftward from the third frame  213 , and is substantially rectangular conforming to the shape of the roller holder  255  in a left side view. The guide frame  214  has openings  214 A and  214 B. The opening  214 A is open forward at a lower front corner of the guide frame  214 . The protrusion  265  protrudes forward through the opening  214 A. The opening  214 B is open leftward at the left end of the guide frame  214 . The detection piece  269  protrudes leftward through the opening  214 B. The guide frame  214  guides the roller holder  255  to move linearly in the lateral direction. 
     As shown in  FIGS. 13 and 14 , the second coupling mechanism  240  is arranged in a lower portion of the discharging unit  200  to couple the discharge motor  299  and the moving mechanism  250  in a manner drivable together. The second coupling mechanism  240  includes a plurality of coupling gears  281  to  283 , a rotation shaft  283 A, and a one-way clutch  290 . More specifically, the plurality of coupling gears  281  to  283  couple the discharge motor  299  and the discharging roller  220  in a manner drivable together, and couple the discharge motor  299  and the moving mechanism  250  in a manner drivable together. 
     The one-way clutch  290  is arranged between the inner wall of the rotator  251  and the upper end portion of the rotation shaft  283 A. In  FIG. 13 , the broken lines indicate the portion of the rotation shaft  283 A arranged inside the coupling gear  283 , the first frame  211 , and the rotator  251 , and the one-way clutch  290 . 
     The one-way clutch  290  couples the discharge motor  299  and the rotator  251  in a manner drivable together when the discharge motor  299  rotates reversely, and decouples the discharge motor  299  from the rotator  251  when the discharge motor  299  rotates forward. In the present embodiment, when the discharge motor  299  rotates reversely (arrow R 2 ), the rotation shaft  283 A is rotated clockwise in a bottom view via the coupling gears  281  to  283 . The one-way clutch  290  rotates the rotator  251  together with the rotation shaft  283 A as the rotation shaft  283 A rotates clockwise in a bottom view. When the discharge motor  299  rotates forward (arrow R 1 ), the rotation shaft  283 A is rotated counterclockwise in a bottom view via the coupling gears  281  to  283 . The one-way clutch  290  causes the rotator  251  to rotate without meshing with the rotation shaft  283 A as the rotation shaft  283 A is rotated counterclockwise in a bottom view. 
     As shown in  FIG. 13 , the position sensor  295  is fixed to the left surface of the third frame  213  above the guide frame  214 . The position sensor  295  is a switch sensor and includes a movable piece  295 A. The movable piece  295 A is located on the right of the upper end portion of the detection piece  269 . The movable piece  295 A is constantly urged leftward and engaged at a predetermined engagement position. As the movable piece  295 A swings rightward to a predetermined movable position, the position sensor  295  outputs a detection signal. The position sensor  295  detects whether the discharging roller  220  is at the nip position. 
     The operation of each component of the discharging unit  200  performed when the discharge motor  299  rotates forward will now be described with reference to  FIGS. 13 and 14 . The driving force in forward rotation (arrow R 1 ) of the discharge motor  299  (hereafter referred to as a forward rotation force of the discharge motor  299 ) is transmitted by the first coupling mechanism  280  from the output shaft  299 A via the coupling gears  281 ,  282 ,  283 , and  284 , the moving gear  285 , and the rotation shaft  285 A to the discharging roller  220  in this order. Thus, in the forward rotation of the discharge motor  299 , the discharging roller  220  rotates counterclockwise (hereafter referred to as a discharge direction; indicated by arrow R 3 ) in a bottom view. The tape is transported forward while being in contact with the discharging roller  220  rotating in the discharge direction. 
     The forward rotation force of the discharge motor  299  is further transmitted by the second coupling mechanism  240  from the output shaft  299 A via the coupling gears  281 ,  282 , and  283  to the rotation shaft  283 A in this order. The one-way clutch  290  decouples the discharge motor  299  from the rotator  251 , and thus the forward rotation force of the discharge motor  299  is not transmitted from the rotation shaft  283 A to the rotator  251 . Thus, the rotator  251  does not rotate when the discharge motor  299  rotates forward. Thus, the printing device  1  drives the discharge motor  299  forward to rotate the discharging roller  220  at the same position in the discharge direction. More specifically, the printing device  1  drives the discharge motor  299  forward to rotate the discharging roller  220  in the discharge direction without the discharging roller  220  moving between the nip position (refer to  FIGS. 13 and 16 ) and the release position (refer to  FIGS. 14 and 17 ). 
     The operation of each component of the discharging unit  200  when the discharge motor  299  rotates reversely will now be described with reference to  FIGS. 13, 14, 16, and 17 . As shown in  FIGS. 13 and 14 , the driving force in reverse rotation (arrow R 2 ) of the discharge motor  299  (hereafter referred to as a reverse rotation force of the discharge motor  299 ) is transmitted by the first coupling mechanism  280  from the output shaft  299 A via the coupling gears  281 ,  282 ,  283 , and  284 , the moving gear  285 , and the rotation shaft  285 A to the discharging roller  220  in this order. Thus, in the reverse rotation of the discharge motor  299 , the discharging roller  220  rotates clockwise in a bottom view, or in the direction opposite to the discharge direction (hereafter referred to as a return direction; indicated by arrow R 4 ). 
     The reverse rotation force of the discharge motor  299  is further transmitted by the second coupling mechanism  240  from the output shaft  299 A via the coupling gears  281 ,  282 , and  283  to the rotation shaft  283 A in this order. The one-way clutch  290  couples the discharge motor  299  and the rotator  251  in a manner drivable together, and thus the reverse rotation force of the discharge motor  299  is transmitted from the rotation shaft  283 A to the rotator  251 . Thus, as the discharge motor  299  rotates reversely, the rotator  251  rotates clockwise about the rotation shaft  283 A in a bottom view. The eccentric member  252  rotates clockwise about the rotation shaft  283 A in a bottom view. 
     As shown in  FIGS. 16 and 17 , the eccentric member  252  presses the protrusion  265  leftward or rightward while moving in the first support hole  266  in the front-rear direction. Thus, the roller holder  255  moves leftward or rightward along the guide frame  214 . As the roller holder  255  moves leftward or rightward, the inner wall of the second support hole  271  (refer to  FIG. 15 ) or the recess  263  (refer to  FIG. 15 ) presses the rotation shaft  285 A leftward or rightward. As the rotation shaft  285 A moves leftward or rightward, the discharging roller  220  moves between the nip position and the release position. Thus, the printing device  1  drives the discharge motor  299  reversely to move the discharging roller  220  to the nip position (refer to  FIG. 16 ) or to the release position (refer to  FIG. 17 ) by the moving mechanism  250 . 
     When the discharging roller  220  moves between the nip position and the release position, the rotation shaft  285 A moves along the guide hole  211 A in the second support hole  271  (refer to  FIG. 15 ) in the front-rear direction. More specifically, the rotation shaft  285 A moves along the peripheral surface  284 B of the coupling gear  284 . When the discharging roller  220  moves from the release position to the nip position, the discharging roller  220  approaches the opposing rollers  230  slightly obliquely from the left front (refer to  FIG. 17 ). The moving gear  285  moves along the peripheral surface  284 B of the coupling gear  284  together with the rotation shaft  285 A. Thus, the moving gear  285  moves while meshing with the coupling gear  284 . Thus, the discharging roller  220  moves between the nip position and the release position while the discharge motor  299  remains coupled to the discharging roller  220  by the first coupling mechanism  280  in a manner drivable together. More specifically, the discharge motor  299  is coupled to the discharging roller  220  by the first coupling mechanism  280  in a manner drivable together when the discharging roller  220  is at either the nip position or the release position. 
     The discharging roller  220  at the nip position holds the tape between the discharging roller  220  and the opposing rollers  230 . Without the tape, the discharging roller  220  comes in contact with the opposing rollers  230 . The discharging roller  220  may oppose the opposing rollers  230  with a distance smaller than the thickness of the tape between the roller  220  and the opposing rollers  230 . The discharging roller  220  at the release position is spaced leftward from the tape. The position of the discharging roller  220  in the transport direction at which the discharging roller  220  holds the tape between the roller  220  and the opposing rollers  230  is referred to as a second holding position P 5 . The load with which the discharging roller  220  holds the tape between the roller  220  and the opposing rollers  230  is referred to as a holding load at the second holding position P 5 . The second holding position P 5  is downstream from the second cut position P 4  in the transport direction. The holding load at the second holding position P 5  is smaller than the holding load at the first holding position P 2 . 
     More specifically, as shown in  FIG. 17 , the eccentric member  252  on the left of the rotation shaft  283 A is at the left end of the movable range of the eccentric member  252  in the lateral direction. The roller holder  255  is at the left end of the movable range of the roller holder  255  in the lateral direction, and the discharging roller  220  is at the release position. In this state, as the eccentric member  252  rotates counterclockwise about the rotation shaft  283 A in a plan view, the eccentric member  252  presses the protrusion  265  rightward while moving rearward in the first support hole  266 . The first member  260 , the second member  270 , and the discharging roller  220  move integrally rightward until the discharging roller  220  is at the nip position, or until the discharging roller  220  is positioned to hold the tape between the roller  220  and the opposing rollers  230 . 
     As shown in  FIG. 16 , in the present embodiment, before the eccentric member  252  is located at the right end of the movable range of the eccentric member  252  in the lateral direction, the discharging roller  220  is at the position (nip position) to hold the tape between the roller  220  and the opposing rollers  230 . When the eccentric member  252  further moves to the right end of the movable range of the eccentric member  252  in the lateral direction after the discharging roller  220  is positioned at the nip position, the first member  260  moves rightward. The second member  270  and the discharging roller  220  are restricted by the opposing rollers  230  moving rightward. More specifically, the first member  260  moves toward the second member  270  and the discharging roller  220  against the urging force of the urging member  256 . When the eccentric member  252  moves between the left and right ends of the movable range of the eccentric member  252  in the lateral direction, the first member  260  moves by a longer distance in the lateral direction than the discharging roller  220  and the second member  270  in the lateral direction. 
     When the first member  260  moves toward the second member  270  and the discharging roller  220  against the urging force of the urging member  256 , the urging member  256  applies a greater urging force to the discharging roller  220  toward the opposing rollers  230 . Thus, the printing device  1  can adjust the holding load at the second holding position P 5  in accordance with the position of the eccentric member  252  in the lateral direction. When the discharging roller  220  is at the nip position, the opposing rollers  230  moves toward or away from the first member  260  in accordance with the thickness of the tape. In this case, the second member  270  moves closer to the first member  260  as the tape has a larger thickness, and the urging member  256  applies a greater urging force accordingly. Thus, the printing device  1  can change the holding load at the second holding position P 5  in accordance with the thickness of the tape. 
     As shown in  FIG. 13 , when the discharging roller  220  is at the nip position, the enlarged-diameter portion  253  is located on the right of the rotation shaft  283 A. Thus, the urging member  297  is engaged with the recess  253 A. In this case, the urging member  297  urges the enlarged-diameter portion  253  obliquely to the left front. More specifically, the urging member  297  urges the rotator  251  counterclockwise in a bottom view. The urging member  297  restricts the discharging roller  220  moving from the nip position to the release position with the rotator  251  rotating clockwise in a bottom view. The urging force of the urging member  297  is smaller than the force used to rotate the rotator  251  counterclockwise in a bottom view. This maintains the discharging roller  220  at the nip position under the urging force of the urging member  297 . 
     When the discharging roller  220  is at the release position, the detection piece  269  is spaced leftward from the movable piece  295 A (not shown). While the discharging roller  220  is moving from the release position to the nip position, the detection piece  269  presses the movable piece  295 A rightward. When the discharging roller  220  moves to the nip position, the movable piece  295 A swings to the movable position while being pressed rightward by the detection piece  269 . In the present embodiment, when the eccentric member  252  is located on the right end of the movable range of the eccentric member  252  in the lateral direction, the detection piece  269  is arranged at the right end of the movable range of the detection piece  269  in the lateral direction. In this state, the movable piece  295 A is at the movable position. The position sensor  295  can thus detect whether the discharging roller  220  is at the nip position by detecting whether the detection piece  269  (or the first member  260 ) is at the right end of the movable range of the detection piece  269  in the lateral direction. 
     The electrical configuration of the printing device  1  will now be described with reference to  FIG. 18 . The printing device  1  includes a central processing unit (CPU)  81 . The CPU  81  functions as a processor that performs main processing (described later) to collectively control the printing device  1 . The CPU  81  is connected to a flash memory  82 , a read-only memory (ROM)  83 , a random-access memory (RAM)  84 , the thermal head  60 , the transport motor  68 , the cutter motor  105 , the discharge motor  299 , the input unit  4 , the position sensor  295 , the mark sensor  31 , and a tape sensor  32 . The flash memory  82  is a non-transitory storage medium that stores, for example, a program to be executed by the CPU  81  to implement the main processing. The ROM  83  is a non-transitory storage medium that stores a variety of parameters used by the CPU  81  to execute various programs. The RAM  84  is a temporary storage medium, and stores temporary data from, for example, a timer or a counter. 
     The tape sensor  32  is located downstream from the tape driving shaft  61  and the transport roller  66  and upstream from the discharging roller  220  in the transport direction. The tape sensor  32  is a transmissive photosensor that detects whether the tape is located at a predetermined detection position (not shown) between the first holding position P 2  and the second holding position P 5  in the transport direction. The tape sensor  32  outputs a detection signal when detecting a tape at the detection position. 
     The main processing will now be described with reference to  FIGS. 19 to 24 . A user sets the printing device  1  in a print-ready state, and powers on the printing device  1 . When the printing device  1  is powered on, the CPU  81  starts the main processing by loading the program stored in the flash memory  82  into the RAM  84 . 
     As shown in  FIG. 19 , the CPU  81  performs initial processing (S 11 ). In the initial processing, the CPU  81  controls the cutter motor  105  to set the cutter unit  100  to an initial state. The CPU  81  drives the discharge motor  299  reversely to set the discharging unit  200  to the initial state. When the discharging unit  200  is in the initial state, the discharging roller  220  is at the release position. The CPU  81  determines that the discharging unit  200  is in the initial state in response to no detection signal output from the position sensor  295 . The discharging roller  220  at the nip position may be defined as the discharging unit  200  in the initial state. The CPU  81  clears the information stored in the RAM  84 . In particular, the CPU  81  sets zero as a value K of a counter indicating the print count. The counter indicating the print count is stored into the RAM  84  and counts the number of times the printing is performed. 
     The CPU  81  receives tape information (S 12 ). The tape information indicating the tape type (selected from the receptor tape  5 , the die-cut tape  9 , a thermal tape, a transparent film tape, or a double-sided adhesive tape) is input by the user to the CPU  81  through the input unit  4 . The user inputs the tape information associated with the type of the tape accommodated in the cassette used. The received tape information is stored into the RAM  84 . 
     The CPU  81  determines whether the tape indicated by the received tape information is the die-cut tape  9  (S 13 ). When the tape is not the die-cut tape  9  (No in S 13 ), the CPU  81  advances to S 21 . 
     The die-cut tape  9  has different thicknesses between its portions including the backings  91  and its portions including no backings  91  in the longitudinal direction (transport direction), and thus has steps between the portions including the backings  91  and the portions including no backings  91 . When the die-cut tape  9  has its front end (downstream end in the transport direction) swinging in the thickness direction in the cassette attached to the receiving unit  6 , the edge  179 C or another part of the fixed blade  179  may come into contact with any of the steps of the die-cut tape  9 . When the edge  179 C or another part of the fixed blade  179  comes in contact with the adhesive layer  93  exposed to the step of the die-cut tape  9 , the backing  91  may separate from the release paper  92 . The die-cut tape  9  may thus be unintendedly discharged from the cassette with its weight when the printing device  1  does not drive the transport motor  68  forward. 
     For the die-cut tape  9  (Yes in S 13 ), the CPU  81  starts driving the discharge motor  299  reversely to start moving the discharging roller  220  to the nip position (refer to  FIG. 16 ) (S 14 ). In response to a detection signal from the position sensor  295 , the CPU  81  stops driving the discharge motor  299  reversely to stop the discharging roller  220  at the nip position (S 15 ). Thus, the printing device  1  prevents the front end of the die-cut tape  9  from swinging by holding the die-cut tape  9  between the discharging roller  220  and the opposing rollers  230 . The printing device  1  thus prevents the backings  91  in the die-cut tape  9  from separating from the release paper  92 . The printing device  1  can restrict the die-cut tape  9  moving downstream in the transport direction by holding the die-cut tape  9  at the second holding position P 5  between the discharging roller  220  and the opposing rollers  230 . Thus, the printing device  1  prevents the die-cut tape  9  from being unintendedly discharged from the cassette. As described above, the position sensor  295  outputs a detection signal when the discharging roller  220  is at the nip position. Thus, the CPU  81  can reliably stop the discharging roller  220  at the nip position based on the detection signal from the position sensor  295 . 
     The CPU  81  receives an intended number of prints (S 21 ). The intended number of prints refers to the number of times the printing is to be repeated. The intended number of prints is input to the CPU  81  by a user through the input unit  4 . The received intended number of prints is stored into the RAM  84 . The CPU  81  receives a print instruction (S 22 ). The print instruction is input to the CPU  81  by a user through the input unit  4 . The print instruction includes print data. The CPU  81  calculates a discharge stop time based on the print data (S 23 ). The discharge stop time is a time difference between the printing time taken from the start to the end of the printing and a predetermined reference time. The reference time is shorter than a motor driving time. The motor driving time is a period of time for which the discharge motor  299  rotates reversely to move the discharging roller  220  from the nip position to the release position. Specifically, the motor driving time is a period of time for which the discharge motor  299  rotates reversely to allow the eccentric member  252  to move from the right end to the left end (or from the left end to the right end) within a movable range of the eccentric member  252  in the lateral direction. The reference time and the motor driving time are prestored in the ROM  83 . The reference time may be changeable within the length of the motor driving time. The calculated discharge stop time is stored into the RAM  84 . 
     The CPU  81  determines whether the type of the tape indicated by the tape information received in S 12  is the die-cut tape  9  (S 24 ). When the tape is determined not to be the die-cut tape  9  (No in S 24 ), the CPU  81  performs first tape-end detection (S 25 ). When the tape is determined to be the die-cut tape  9  (Yes in S 24 ), the CPU  81  performs second tape-end detection (S 26 ). After performing the first tape-end detection or the second tape-end detection, the CPU  81  advances to S 61  (refer to  FIG. 20 ). 
     The first tape-end detection will now be described with reference to  FIG. 22 . In the first tape-end detection, the end of the tape other than the die-cut tape  9  (e.g., the receptor tape  5 , a thermal tape, a stencil tape, or a laminate tape) is detected. 
     The CPU  81  starts driving the transport motor  68  reversely to start transporting the tape reversely (S 31 ). This shortens a portion of the tape located downstream from the thermal head  60  in the transport direction. After transporting the tape reversely by a predetermined amount, the CPU  81  stops driving the transport motor  68  to stop transporting the tape reversely (S 32 ). The CPU  81  determines whether the tape is at the detection position based on the detection signal from the tape sensor  32  (S 33 ). When the tape has its front end (downstream end in the transport direction) located downstream from the detection position in the transport direction, the tape sensor  32  outputs a detection signal (Yes in S 33 ). The CPU  81  returns to the main processing (refer to  FIG. 19 ). 
     When the tape has its front end located upstream from the detection position in the transport direction, the tape sensor  32  does not output a detection signal (No in S 33 ). The CPU  81  starts driving the discharge motor  299  forward to start rotating the discharging roller  220  in the discharge direction (S 34 ). Thus, the discharging roller  220  at the release position rotates in the discharge direction (arrow R 3 ; refer to  FIG. 17 ). The tape held at the first holding position P 2  is prevented from being transported forward when coming in contact with the discharging roller  220 . 
     The CPU  81  starts driving the transport motor  68  forward to start transporting the tape forward (S 35 ). The tape is not prevented from being transported forward when coming in contact with the discharging roller  220  rotating in the discharge direction (arrow R 3 ; refer to  FIG. 17 ). The CPU  81  stops driving the transport motor  68  in response to the detection signal from the tape sensor  32  to stop transporting the tape forward (S 36 ). Thus, the tape has its front end located at the detection position of the tape sensor  32  or downstream from the detection position in the transport direction. The CPU  81  stops driving the discharge motor  299  forward to stop rotating the discharging roller  220  (S 37 ). The CPU  81  returns to the main processing. 
     The first tape-end detection shortens a portion of the tape located downstream from the print position P 1  in the transport direction. The printing device  1  can thus reduce the area of the tape with no characters to be printed. The front end of the tape is located at least at the detection position of the tape sensor  32  or downstream from the detection position in the transport direction. The detection position is downstream from the first holding position P 2  in the transport direction. Thus, the printing device  1  can reduce tape transport errors caused by the tape failing to be held at the first holding position P 2 . 
     The second tape-end detection will now be described with reference to  FIG. 23 . In the second tape-end detection, the end of the die-cut tape  9  is detected. Processing of the second tape-end detection different from the first tape-end detection will be mainly described. 
     The CPU  81  starts driving the discharge motor  299  reversely to start moving the discharging roller  220  to the release position (S 41 ). The CPU  81  drives the discharge motor  299  reversely for the motor driving time, and then stops driving the discharge motor  299  reversely to stop the discharging roller  220  at the release position (S 42 ). The discharge motor  299  may be a stepping motor. The CPU  81  can stop the discharging roller  220  at the release position by controlling the amount of rotation of the reversely driven discharge motor  299  when the discharging roller  220  is at the nip position. 
     The processing in S 43  to S 49  is the same as the processing in S 31  to S 37 . The CPU  81  determines whether the mark sensor  31  has detected the mark  99  (S 51 ) during transportation of the die-cut tape  9 , or during reverse transportation of the die-cut tape  9  (S 43  and S 44 ) or forward transportation of the die-cut tape  9  (S 47  and S 48 ). The mark sensor  31  outputs a detection signal when detecting the mark  99 . When the CPU  81  has received a detection signal from the mark sensor  31  during transportation of the die-cut tape  9  (Yes in S 51 ), the CPU  81  advances to S 56 . 
     When the CPU  81  receives no detection signal from the mark sensor  31  during transportation of the die-cut tape  9  (No in S 51 ), the CPU  81  starts driving the discharge motor  299  forward to start rotating the discharging roller  220  in the discharge direction (S 52 ). Thus, the discharging roller  220  at the release position rotates in the discharge direction (arrow R 3 ; refer to  FIG. 17 ). The CPU  81  starts driving the transport motor  68  forward to start transporting the die-cut tape  9  forward (S 53 ). In response to a detection signal from the mark sensor  31 , the CPU  81  stops driving the transport motor  68  forward to stop transporting the die-cut tape  9  forward (S 54 ). The CPU  81  stops driving the discharge motor  299  forward to stop rotating the discharging roller  220  (S 55 ). 
     The CPU  81  calculates a correction amount in forward transportation (S 56 ). The correction amount in forward transportation is the amount of the die-cut tape  9  to be transported forward to place any of the backings  91  in the die-cut tape  9  at the print position P 1 . The backings  91  and the marks  99  in the die-cut tape  9  are arranged at regular intervals. Thus, the CPU  81  can calculate the correction amount in forward transportation with respect to the position of the die-cut tape  9  in the transport direction when the mark  99  is detected by the mark sensor  31 . The calculated correction amount in forward transportation is stored into the RAM  84 . 
     The CPU  81  starts driving the discharge motor  299  forward to start rotating the discharging roller  220  in the discharge direction (S 57 ). Thus, the discharging roller  220  at the release position rotates in the discharge direction (arrow R 3 ; refer to  FIG. 17 ). The CPU  81  starts driving the transport motor  68  forward to start transporting the die-cut tape  9  forward (S 58 ). The CPU  81  transports the die-cut tape  9  forward by the correction amount in forward transportation calculated in S 56 , and then stops driving the transport motor  68  to stop transporting the die-cut tape  9  forward (S 59 ). Thus, one of the backings  91  in the die-cut tape  9  is located at the print position P 1 . A portion between adjacent backings  91  in the die-cut tape  9  (or the release paper  92 ) is thus prevented from having characters printed. The CPU  81  stops driving the discharge motor  299  forward to stop rotating the discharging roller  220  (S 60 ). The CPU  81  returns to the main processing (refer to  FIG. 19 ). 
     As shown in  FIG. 20 , the CPU  81  starts driving the discharge motor  299  forward to start rotating the discharging roller  220  in the discharge direction (S 61 ). Thus, the discharging roller  220  at the release position rotates in the discharge direction (arrow R 3 ; refer to  FIG. 17 ). In this state, the CPU  81  starts the printing (S 62 ). Specifically, the CPU  81  starts driving the transport motor  68  forward. The CPU  81  selectively heats a plurality of heater elements in the thermal head  60 . Thus, the tape has characters printed per line while being transported forward. 
     The CPU  81  determines whether the discharge stop time calculated in S 23  has elapsed after the start of the printing in S 62  (S 63 ). When the discharge stop time has not elapsed (No in S 63 ), the CPU  81  waits until the discharge stop time elapses. After the discharge stop time elapses (Yes in S 63 ), the CPU  81  stops driving the discharge motor  299  forward to stop rotating the discharging roller  220  (S 64 ). Thus, the discharging roller  220  stops rotating in the discharge direction during the printing. The CPU  81  starts driving the discharge motor  299  reversely to start moving the discharging roller  220  to the nip position (refer to  FIG. 16 ; S 65 ). Specifically, the discharging roller  220  starts moving to the nip position during the printing. The discharging roller  220  does not move to the nip position during the printing with the reference time shorter than the motor driving time. 
     The CPU  81  stops the printing (S 66 ). Specifically, the CPU  81  stops driving the transport motor  68  after stopping the control over the thermal head  60 . This stops the printing on the tape and then stops the forward transportation of the tape. More specifically, for full-cutting after the printing, the CPU  81  stops transporting the tape forward to place a portion of the tape to be cut at the first cut position P 3 . For partial-cutting after the printing, the CPU  81  stops transporting the tape forward to place a portion of the tape to be cut at the second cut position P 4 . For full-cutting after the printing for the die-cut tape  9 , the CPU  81  determines the position of the mark  99  in the transport direction based on the detection signal from the mark sensor  31 . The CPU  81  stops transporting the die-cut tape  9  forward to place a portion of the die-cut tape  9  to be cut between adjacent backings  91  at the first cut position P 3  based on the determined mark  99  in the transport direction. 
     The CPU  81  increments the value K of the counter indicating the print count by one (S 67 ). In response to a detection signal from the position sensor  295 , the CPU  81  stops driving the discharge motor  299  reversely to stop the discharging roller  220  at the nip position (S 68 ). 
     As shown in  FIG. 21 , the CPU  81  determines a preset rotation amount of the discharging roller  220  by referring to a rotation determination table  30  (refer to  FIG. 24 ; S 71 ). The preset rotation amount of the discharging roller  220  is the amount by which the discharging roller  220  rotates in S 75  and S 76  (described later). 
     As shown in  FIG. 24 , the rotation determination table  30  shows the preset rotation amount of the discharging roller  220  associated with the type of each tape. For convenience,  FIG. 24  shows the preset rotation amount of the discharging roller  220  labeled either as large, intermediate, small, and none. The preset rotation amount of the discharging roller  220  decreases in the order of large, intermediate, and small. The small amount is greater than zero. The amount labeled as none refers to the preset rotation amount of the discharging roller  220  being zero, meaning no control being performed to rotate the discharging roller  220 . 
     In the present embodiment, the receptor tape  5  and the thermal tape are labeled as large. The laminate tape is labeled as intermediate. The stencil tape is labeled as small. The die-cut tape  9  is labeled as none. Specifically, the rotation determination table  30  has a larger preset rotation amount of the discharging roller  220  for a more flexible tape, except the die-cut tape  9 . In S 71 , the CPU  81  refers to the rotation determination table  30  to determine the preset rotation amount of the discharging roller  220  associated with the type of the tape based on the tape information received in S 12 . The determined preset rotation amount of the discharging roller  220  is stored into the RAM  84 . 
     As shown in  FIG. 21 , the CPU  81  determines whether the preset rotation amount of the discharging roller  220  is determined to be none in S 71  (S 72 ). For example, the preset rotation amount of the discharging roller  220  for the die-cut tape  9  is determined to be none (Yes in S 72 ). The CPU  81  advances to S 81 . 
     For example, the preset rotation amount of the discharging roller  220  for the receptor tape  5 , a thermal tape, a stencil tape, and a laminate tape is not determined to be none (No in S 72 ). Then, the CPU  81  determines whether the value K of the counter indicating the print count is one (S 73 ). As described above, the value K of the counter indicating the print count is incremented by one in S 67  (refer to  FIG. 20 ) every after a single printing operation. Thus, the value K of the counter indicating the print count is one after the first printing and before the second printing (Yes in S 73 ). The CPU  81  advances to S 75 . 
     After the second printing, the value K of the counter indicating the print count is larger than or equal to two (No in S 73 ). The CPU  81  corrects the preset rotation amount of the discharging roller  220  (S 74 ). Specifically, the CPU  81  sets a rotation amount that is a predetermined amount smaller than the preset rotation amount of the discharging roller  220  determined in S 71 . The predetermined amounts associated with large, intermediate, and small are prestored in the ROM  83 . The predetermined amounts associated with large, intermediate, and small are smaller than the preset rotation amounts associated with large, intermediate, and small. The corrected rotation amount is stored into the RAM  84  as the preset rotation amount of the discharging roller  220 . 
     The CPU  81  starts driving the discharge motor  299  forward to start rotating the discharging roller  220  in the discharge direction (S 75 ). Thus, the discharging roller  220  at the nip position rotates in the discharge direction (arrow R 3 ; refer to  FIG. 16 ). The tape is not transported forward because the holding load at the second holding position P 5  is smaller than the holding load at the first holding position P 2 . Thus, the tape creased in S 68  (refer to  FIG. 20 ) is held under tension applied downstream in the transport direction and held between the discharging roller  220  and the opposing rollers  230 , and thus is smoothed. The tape thus has its width in the vertical direction, and is cut accurately by the printing device  1  in S 83  or S 91  (described later). For the die-cut tape  9 , as described above, the processing in S 75  and S 76  is not performed. The die-cut tape  9  has the release paper  92  cut between adjacent backings  91 , and thus accurate cutting may not be needed. The die-cut tape  9  thus allows creases that may not be smoothed. 
     The CPU  81  rotates the discharging roller  220  by the preset rotation amount determined in S 71  and corrected in S 74  (or the preset rotation amount stored in the RAM  84 ), and then stops driving the discharge motor  299  forward to stop rotating the discharging roller  220  (S 76 ). 
     The CPU  81  determines whether the value K of the counter indicating the print count is equal to the intended number of prints received in S 21  (refer to  FIG. 19 ; S 81 ). Before the printing is repeated by the intended number of prints, the value K of the counter indicating the print count is smaller than the intended number of prints (No in S 81 ). The CPU  81  determines whether the type of the tape indicated by the tape information received in S 12  (refer to  FIG. 19 ) is the die-cut tape  9  (S 82 ). When the tape is the die-cut tape  9  (Yes in S 82 ), the CPU  81  returns to S 24  (refer to  FIG. 19 ). 
     When the tape is not the die-cut tape  9  (No in S 82 ), the CPU  81  controls the cutter motor  105  to partially cut the tape (S 83 ). The tape is partially cut between the discharging roller  220  and the opposing rollers  230 . The CPU  81  starts driving the discharge motor  299  reversely to start moving the discharging roller  220  to the release position (S 84 ). After driving the discharge motor  299  reversely for the motor driving time, the CPU  81  stops driving the discharge motor  299  reversely to stop the discharging roller  220  at the release position (S 85 ). The CPU  81  returns to S 24 . Thus, the processing in S 24  to S 76  is performed repeatedly until the value K of the counter indicating the print count reaches the intended number of prints, or before the printing is repeated by the intended number of prints. 
     In S 81 , when the printing is repeated by the intended number of prints, the value K of the counter indicating the print count reaches the intended number of prints (Yes in S 81 ). The CPU  81  controls the cutter motor  105  to fully cut the tape (S 91 ). The tape is fully cut between the discharging roller  220  and the opposing rollers  230 . The cut tape (tape piece cut from the original roll) at the second holding position P 5  downstream from the first cut position P 3  in the transport direction is held between the discharging roller  220  and the opposing rollers  230 . The CPU  81  starts driving the discharge motor  299  forward to start rotating the discharging roller  220  in the discharge direction (S 92 ). Thus, the discharging roller  220  at the nip position rotates in the discharge direction (arrow R 3 ; refer to  FIG. 16 ). The cut tape is thus transported forward and discharged out of the printing device  1  through the outlet slit  11 . 
     In accordance with the length of the cut tape, the CPU  81  stops driving the discharge motor  299  forward to stop rotating the discharging roller  220  (S 93 ). Specifically, when the cut tape has its upstream end in the transport direction at the second holding position P 5 , the CPU  81  stops driving the discharge motor  299  forward. Thus, the cut tape has its upstream end in the transport direction held between the discharging roller  220  and the opposing rollers  230 . Thus, the cut tape has its front end (downstream end in the transporting direction) coming out of the outlet slit  11  without falling off the printing device  1  through the outlet slit  11 . 
     The CPU  81  starts driving the discharge motor  299  to rotate reversely to start moving the discharging roller  220  to the release position (S 94 ). After driving the discharge motor  299  to rotate reversely for the motor driving time, the CPU  81  stops driving the discharge motor  299  reversely to stop the discharging roller  220  at the release position (S 95 ). Thus, the cut tape falls off the printing device  1  through the outlet slit  11 . After S 93  and before S 94 , the user may remove the cut tape having its front end (downstream end in the transport direction) coming out of the outlet slit  11 . The CPU  81  returns to S 11  (refer to  FIG. 19 ). 
     As described above, the printing device  1  includes the transport roller  66 , the thermal head  60 , the discharging roller  220 , the opposing rollers  230 , the discharge motor  299 , the first coupling mechanism  280 , the moving mechanism  250 , and the second coupling mechanism  240 . The transport roller  66  transports a tape. The thermal head  60  prints on the tape transported by the transport roller  66 . The discharging roller  220  is located downstream from the thermal head  60  in the tape transport direction. The opposing rollers  230  oppose the discharging roller  220 . The discharge motor  299  rotates forward (arrow R 1 ) and reversely (arrow R 2 ). The reverse direction and the forward direction are opposite to each other. The first coupling mechanism  280  couples the discharge motor  299  and the discharging roller  220  in a manner drivable together. The first coupling mechanism  280  rotates the discharging roller  220  in the discharge direction (arrow R 3 ) when the discharge motor  299  rotates forward. The discharge direction is the rotation direction in which the tape is transported downstream in the transport direction. The moving mechanism  250  moves the discharging roller  220  to the nip position and the release position. The discharging roller  220  at the nip position holds the tape between the roller  220  and the opposing rollers  230 . The discharging roller  220  at the release position is spaced from the tape. The second coupling mechanism  240  couples the discharge motor  299  and the moving mechanism  250  in a manner drivable together. The second coupling mechanism  240  includes the one-way clutch  290 . The one-way clutch  290  couples the discharge motor  299  and the moving mechanism  250  in a manner drivable together when the discharge motor  299  rotates reversely. The second coupling mechanism  240  decouples the discharge motor  299  from the moving mechanism  250  when the discharge motor  299  rotates forward. 
     The one-way clutch  290  decouples the discharge motor  299  from the moving mechanism  250  when the discharge motor  299  rotates forward. Thus, the moving mechanism  250  restricts the discharging roller  220  moving between the nip position and the release position. Thus, the printing device  1  can rotate the discharging roller  220  at a predetermined position in the discharge direction (arrow R 3 ). Specifically, the printing device  1  controls the rotation direction of the single discharge motor  299  to control rotation of the discharging roller  220  in the discharge direction and the movement of the discharging roller  220  between the nip position and the release position. Thus, the printing device  1  may not include two motors for rotating the discharging roller  220  in the discharge direction and for moving the discharging roller  220  to the nip position and the release position. The sizing requirements of the printing device  1  may therefore be reduced. 
     The first coupling mechanism  280  includes the coupling gear  284  and the moving gear  285 . The coupling gear  284  is coupled to and drivable together with the discharge motor  299 . The moving gear  285  is arranged on the rotation shaft  285 A of the discharging roller  220  and meshes with the coupling gear  284 . To move the discharging roller  220  to the nip position and the release position, the moving mechanism  250  moves the rotation shaft  285 A of the discharging roller  220  along the toothed peripheral surface  284 B of the coupling gear  284 . Thus, the discharging roller  220  moves to the nip position and the release position while the moving gear  285  is meshing with the coupling gear  284 . Thus, the driving force of the discharge motor  299  is transmitted to the discharging roller  220  at the nip position or the release position via the coupling gear  284  and the moving gear  285  in this order. The printing device  1  can thus rotate the discharging roller  220  at the nip position or the release position in the discharge direction (arrow R 3 ) by driving the discharge motor  299 . 
     The printing device  1  includes the first frame  211 . The first frame  211  has the guide hole  211 A. The guide hole  211 A extends along the peripheral surface  284 B. The rotation shaft  285 A of the discharging roller  220  is received in the guide hole  211 A. Thus, while moving to the nip position and the release position, the discharging roller  220  has the rotation shaft  285 A guided by the guide hole  211 A along the peripheral surface  284 B of the coupling gear  284 . Thus, whether the discharging roller  220  is at the nip position or the release position, the printing device  1  can reliably maintain the moving gear  285  meshing with the coupling gear  284 . 
     The moving mechanism  250  includes the rotator  251 , the eccentric member  252 , and the roller holder  255 . The rotator  251  is coupled to the discharge motor  299  by the second coupling mechanism  240 . The eccentric member  252  is fixed to the rotator  251  in a manner eccentric to the rotation shaft  283 A of the rotator  251 . The roller holder  255  has the first support hole  266  and the second support hole  271 . The first support hole  266  supports the eccentric member  252 . The second support hole  271  rotatably supports the rotation shaft  285 A of the discharging roller  220 . Thus, the roller holder  255  supports the discharging roller  220 . When the rotator  251  is rotated by the discharge motor  299 , the eccentric member  252  moves laterally. Thus, the eccentric member  252  moves the roller holder  255  laterally. As the roller holder  255  moves laterally, the discharging roller  220  also moves laterally. Thus, the moving mechanism  250  can move the discharging roller  220  to the nip position and the release position. 
     The first support hole  266  supports the eccentric member  252  in a manner movable in the front-rear direction. The second support hole  271  supports the rotation shaft  285 A of the discharging roller  220  in a manner movable in the front-rear direction. The front-rear direction of the printing device  1  is perpendicular to the direction in which the rotation shaft  283 A of the rotator  251  extends (vertical direction of the printing device  1 ) and the direction in which the roller holder  255  moves (lateral direction of the printing device  1 ). Thus, the rotation shaft  283 A of the rotator  251  and the rotation shaft  285 A of the discharging roller  220  can move in the front-rear direction with respect to the roller holder  255  when the eccentric member  252  rotates about the rotation shaft  283 A and when the rotation shaft  285 A of the discharging roller  220  rotates about the rotation shaft  284 A of the coupling gear  284 . To move the discharging roller  220  between the nip position and the release position, the printing device  1  does not change the manner of moving the roller holder  255  in accordance with the manner of moving the discharging roller  220  and the eccentric member  252 . The printing device  1  thus has increased design freedom of the roller holder  255 . 
     The printing device  1  includes the guide frame  214 . The guide frame  214  guides the roller holder  255  to move linearly in the lateral direction when the discharging roller  220  moves to the nip position and the release position. The printing device  1  can thus reduce the distance by which the roller holder  255  moves when the discharging roller  220  moves to the nip position and the release position. Thus, the sizing requirements of the printing device  1  may therefore be reduced. 
     The printing device  1  includes the urging member  297 . The urging member  297  urges the rotator  251  to maintain the discharging roller  220  at the nip position. The printing device  1  can maintain the discharging roller  220  at the nip position under the urging force of the urging member  297  when receiving a reverse driving force of the discharge motor  299  transmitted to the rotator  251 . 
     In the printing device  1 , the roller holder  255  includes the first member  260 , the second member  270 , and the urging member  256 . The first member  260  has the first support hole  266 . The second member  270  has the second support hole  271 . The second member  270  is supported by the first member  260  in a manner movable in the direction toward or away from the opposing rollers  230  (lateral direction of the printing device  1 ). The urging member  256  is arranged between the first member  260  and the second member  270 , and urges the first member  260  toward the opposing rollers  230 . As the tape has a larger thickness, the second member  270  moves closer to the first member  260 , and the urging member  256  urges the first member  260  with a greater urging force. Thus, the printing device  1  can change the holding load at the second holding position P 5  in accordance with the thickness of the tape. Thus, the printing device  1  can adjust the holding load at the second holding position P 5  in accordance with the thickness of the tape under the urging force of the urging member  256 . 
     The printing device  1  includes the position sensor  295 . The position sensor  295  detects the discharging roller  220  at the nip position by detecting the position of the first member  260 . In response to a detection signal from the position sensor  295 , the printing device  1  can reliably determine that the discharging roller  220  is at the nip position. When the discharging roller  220  moves to the nip position and the release position, the first member  260  moves by a longer distance than the discharging roller  220 . Thus, the printing device  1  can detect the position of the discharging roller  220  by detecting the position of the first member  260  more easily than when directly detecting the position of the discharging roller  220 . 
     The above embodiment also has the advantages described below. The printing device (printing device  1 ) includes a transporting unit (transport roller  66 ) that transports a print medium (tape), a printing unit (thermal head  60 ) that prints on a tape transported by the transport roller  66 , a roller (discharging roller  220 ) located downstream from the thermal head  60  in a transport direction of the tape, an opposing member (opposing rollers  230 ) opposing the discharging roller  220 , a motor (discharge motor  299 ), a coupling mechanism (first coupling mechanism  280 ) that couples the discharge motor  299  and the discharging roller  220  in a manner drivable together, and rotates the discharging roller  220  in a first direction (discharge direction indicated by arrow R 3 ) that is a rotation direction in which the tape is transported downstream in the transport direction when the discharge motor  299  is driven, and a moving mechanism (moving mechanism  250 ) that moves the discharging roller  220  to a first position (nip position) and a second position (release position). The discharging roller  220  at the nip position is coupled to the discharge motor  299  by the first coupling mechanism  280  in a manner drivable together and holds the tape between the discharging roller  220  and the opposing rollers  230 . The discharging roller  220  at the release position is coupled to the discharge motor  299  by the first coupling mechanism  280  in a manner drivable together and is spaced from the tape. 
     In this structure, the discharging roller  220  at the nip position or the release position is coupled to the discharge motor  299  by the first coupling mechanism  280  in a manner drivable together. Specifically, the discharge motor  299  can rotate the discharging roller  220  at the nip position or the release position in the discharge direction. Thus, the tape remains transported downstream in the transport direction when coming in contact with the discharging roller  220  rotating in the discharge direction at, for example, the release position. The tape is not prevented from being transported forward. The printing device  1  thus reduces jamming of the tape. 
     The printing device  1  includes a first control unit (CPU  81  implementing S 62 ) that controls printing in which the thermal head  60  prints on the tape transported by the transport roller  66  while the discharging roller  220  is at the release position, and a second control unit (CPU  81  implementing S 61 ) that drives the discharge motor  299  to rotate the discharging roller  220  in the discharge direction (arrow R 3 ) when printing is performed in S 62 . Thus, the discharging roller  220  rotates in the discharge direction at the release position during printing. Thus, the tape is not prevented from being transported forward when moving up and coming in contact with the discharging roller  220 . The printing device  1  thus reduces jamming of the tape during printing. 
     In the above embodiment, the tape corresponds to a print medium; the transport roller  66  corresponds to a transporting unit; the thermal head  60  corresponds to a printing unit; the discharging roller  220  corresponds to a roller; the opposing rollers  230  each correspond to an opposing member; the forward rotation direction (arrow R 1 ) corresponds to a forward rotation direction; the reverse rotation direction (arrow R 2 ) corresponds to a reverse rotation direction; the discharge motor  299  corresponds to a motor; the discharge direction (arrow R 3 ) corresponds to a first direction; the first coupling mechanism  280  corresponds to a first coupling mechanism; the nip position corresponds to a first position; the release position corresponds to a second position; the moving mechanism  250  corresponds to a moving mechanism; the one-way clutch  290  corresponds to a first switching mechanism; and the second coupling mechanism  240  corresponds to a second coupling mechanism. 
     The coupling gear  284  corresponds to a first gear. The rotation shaft  285 A corresponds to a rotation shaft of the roller. The moving gear  285  corresponds to a second gear. The peripheral surface  284 B corresponds to a peripheral surface. The guide hole  211 A corresponds to a guide hole. The first frame  211  corresponds to a first guide. The rotator  251  corresponds to a rotator. The rotation shaft  283 A corresponds to a rotation shaft of the rotator. The eccentric member  252  corresponds to an eccentric member. The first support hole  266  corresponds to a first support. The second support hole  271  corresponds to a second support. The roller holder  255  corresponds to a holder. The front-rear direction of the printing device  1  corresponds to a second direction. The guide frame  214  corresponds to a second guide. The urging member  297  corresponds to a first urging member. The first member  260  corresponds to a first member. The second member  270  corresponds to a second member. The urging member  256  corresponds to a third urging member. The position sensor  295  corresponds to a detection unit. 
     The print device according to the present disclosure can be variously modified from the above embodiment. For example, when the discharging roller  220  moves between the nip position and the release position in the above embodiment, the rotation shaft  285 A moves along the peripheral surface  284 B of the coupling gear  284 . In some embodiments, the rotation shaft  285 A may not move along the peripheral surface  284 B when the discharging roller  220  moves between the nip position and the release position. A discharging unit  200 A according to a first modification will now be described with reference to  FIG. 25 . The components with the same shapes and functions as those in the above embodiment and also the same processes as in the above embodiment are given the same or corresponding reference numerals, and will not be described or will be described briefly. In the first modification, the printing device  1  includes the same components as in the above embodiment except the discharging unit  200 A (the same applies to second, third, fourth, and fifth modifications described later). 
     The discharging unit  200 A differs from the discharging unit  200  of the above embodiment in including a first coupling mechanism  280 A in place of the first coupling mechanism  280 . The first coupling mechanism  280 A is arranged in a lower portion of the discharging unit  200 A to couple the discharge motor  299  and the discharging roller  220  in a manner drivable together. The first coupling mechanism  280 A includes coupling gears  281  to  284 , a moving gear  285 , a rotation shaft  285 A, and further a coupling gear  286 . The rotation axes of the coupling gears  281  to  284  and  286 , and the moving gear  285  extend vertically. 
     The coupling gear  286  is arranged at the rear of the coupling gear  283  and is a double gear including a large-diameter gear and a small-diameter gear. The large-diameter gear of the coupling gear  286  has its front end meshing with the rear end of the small-diameter gear of the coupling gear  283 . A rotation shaft  286 A is rotatably received in the center hole of the coupling gear  286 . The rotation shaft  286 A is columnar and extends downward from a fourth frame  215 . The fourth frame  215  extends rearward from the left end of the first frame  211 . The moving gear  285  is arranged at the rear of the coupling gear  284  and rightward from the coupling gear  286 . 
     The first frame  211  has a guide hole  211 B replacing the guide hole  211 A of the above embodiment. The guide hole  211 B extends vertically through a portion of the first frame  211  at the rear of the coupling gear  284 , and is long in the lateral direction. The rotation shaft  285 A has a portion received in the guide hole  211 B above the moving gear  285 . The rotation shaft  285 A is movable inside and along the guide hole  211 B in the lateral direction. 
     When the rotation shaft  285 A is at the right end of the guide hole  211 B, the front end of the moving gear  285  meshes with the rear end of the small-diameter gear of the coupling gear  284  (refer to  FIG. 25 ). The moving gear  285  is spaced rightward from the small-diameter gear of the coupling gear  286 . More specifically, the left end of the moving gear  285  does not mesh with the right end of the small-diameter gear of the coupling gear  286 . When the rotation shaft  285 A is at the left end of the guide hole  211 B, the left end of the moving gear  285  meshes with the right end of the small-diameter gear of the coupling gear  286  (not shown). The moving gear  285  is spaced from the small-diameter gear of the coupling gear  284 . More specifically, when the rotation shaft  285 A is at the left end of the guide hole  211 B, the front end of the moving gear  285  does not mesh with the rear end of the small-diameter gear of the coupling gear  284 . 
     The operation of each component of the discharging unit  200 A performed when the discharge motor  299  rotates forward will now be described focusing on its differences from the above embodiment. When the front end of the moving gear  285  meshes with the rear end of the small-diameter gear of the coupling gear  284 , the forward rotation force of the discharge motor  299  is transmitted by the first coupling mechanism  280 A from the output shaft  299 A via the coupling gears  281 ,  282 ,  283 , and  284 , the moving gear  285 , and the rotation shaft  285 A to the discharging roller  220  in this order. This rotates the discharging roller  220  in the discharge direction (arrow R 3 ). When the left end of the moving gear  285  meshes with the right end of the small-diameter gear of the coupling gear  286 , the forward rotation force of the discharge motor  299  is transmitted by the first coupling mechanism  280 A from the output shaft  299 A via the coupling gears  281 ,  282 ,  283 , and  286 , the moving gear  285 , and the rotation shaft  285 A to the discharging roller  220  in this order. This rotates the discharging roller  220  in the discharge direction (arrow R 3 ). 
     The operation of each component of the discharging unit  200 A performed when the discharge motor  299  rotates reversely will now be described focusing on its differences from above embodiment. When the front end of the moving gear  285  meshes with the rear end of the small-diameter gear of the coupling gear  284 , the reverse rotation force of the discharge motor  299  is transmitted by the first coupling mechanism  280 A from the output shaft  299 A via the coupling gears  281 ,  282 ,  283 , and  284 , the moving gear  285 , and the rotation shaft  285 A to the discharging roller  220  in this order. This rotates the discharging roller  220  clockwise in a bottom view, or in the return direction (arrow R 4 ). 
     The reverse rotation force of the discharge motor  299  is also transmitted, as in the above embodiment, by the second coupling mechanism  240  from the output shaft  299 A via the coupling gears  281 ,  282 , and  283  to the rotation shaft  283 A in this order. Thus, the moving mechanism  250  moves the discharging roller  220  to the nip position (not shown) or to the release position (refer to  FIG. 25 ), as in the above embodiment. 
     When the discharging roller  220  moves between the nip position and the release position, the rotation shaft  285 A moves along the guide hole  211 B in the lateral direction. When the discharging roller  220  moves from the release position to the nip position, the discharging roller  220  approaches the opposing rollers  230  from the left (or in a direction perpendicular to the transport direction). The moving gear  285  moves in the lateral direction together with the rotation shaft  285 A. When the discharging roller  220  is at the nip position, the rotation shaft  285 A is at the right end of the guide hole  211 B. When the discharging roller  220  is at the release position, the rotation shaft  285 A is at the left end of the guide hole  211 B. Thus, when the discharging roller  220  moves between the nip position and the release position, the moving gear  285  moves between the position at which the moving gear  285  meshes with the coupling gear  284  and the position at which the moving gear  285  meshes with the coupling gear  286 . The first coupling mechanism  280 A couples the discharge motor  299  and the discharging roller  220  in a manner drivable together when the discharging roller  220  is at either the nip position or the release position. 
     For the discharging unit  200 A, when the discharging roller  220  moves between the nip position and the release position, the rotation shaft  285 A moves linearly in the lateral direction. The second support hole  271  thus may not be long in the front-rear direction. More specifically, the second support hole  271  may simply rotatably support the rotation shaft  285 A. 
     In the first modification, the first coupling mechanism  280 A may include no coupling gear  286 . In this example, when the discharging roller  220  is at the release position, the moving gear  285  meshes with none of the coupling gears. Thus, the discharging roller  220  does not rotate when the discharge motor  299  is driven. 
     In the above embodiment, the single discharge motor  299  is switched between the forward rotation and the reverse rotation to switch both the rotation of the discharging roller  220  and the movement of the discharging roller  220  between the nip position and the release position. In some embodiments, different motors may be used to rotate the discharging roller  220  and move the discharging roller  220  between the nip position and the release position. A discharging unit  200 B according to a second embodiment will now be described with reference to  FIG. 26 . The discharging unit  200 B differs from the discharging unit  200  of the above embodiment in further including a discharge motor  298 , a first coupling mechanism  280 B replacing the first coupling mechanism  280 , and a second coupling mechanism  240 B replacing the second coupling mechanism  240 . The discharge motor  298  is fixed to the right side of the second frame  212  at the right end of the first frame  211  to connect to the CPU  81  (refer to  FIG. 18 ). The discharge motor  298  has an output shaft  298 A extending downward from the discharge motor  298 . The discharge motor  298  can rotate the output shaft  298 A clockwise (arrow R 5 ) and counterclockwise (arrow R 6 ) in a bottom view. 
     The first coupling mechanism  280 B is arranged in a lower portion of the discharging unit  200 B to couple the discharge motor  298  and the discharging roller  220  in a manner drivable together. The first coupling mechanism  280 B includes the coupling gear  284 , the moving gear  285 , the rotation shaft  285 A, and further coupling gears  287  to  289  replacing the coupling gears  281  to  283 . The rotation axes of the coupling gears  284  and  287  to  289 , and the moving gear  285  extend vertically. The coupling gear  287  is a spur gear fixed to a lower end portion of the output shaft  298 A. 
     The coupling gear  288 , which is a spur gear, is arranged on the left rear of the coupling gear  287 . The coupling gear  288  has its front right end meshing with a rear left end of the coupling gear  287 . A rotation shaft  288 A is rotatably received in the center hole of the coupling gear  288 . The rotation shaft  288 A is columnar and fixed to the first frame  211  and extends downward from the first frame  211 . The coupling gear  289 , which is a spur gear, is arranged on the left front of the coupling gear  288 . The coupling gear  289  has its rear right end meshing with a front left end of the coupling gear  288 . A rotation shaft  289 A is rotatably received in the center hole of the coupling gear  289 . The rotation shaft  289 A is columnar and fixed to the first frame  211  and extends downward from the first frame  211 . The coupling gear  284  is arranged on the left of the coupling gear  289 . The coupling gear  284  has its right end meshing with the left end of the coupling gear  289 . 
     Although not shown in  FIG. 26 , the moving gear  285  is arranged at the rear of the coupling gear  284  as in the above embodiment. The rotation shaft  285 A has the lower end portion received and fixed in the coupling gear  284 . The first frame  211  has the guide hole  211 A. 
     The second coupling mechanism  240 B is arranged in a lower portion of the discharging unit  200 B to couple the discharge motor  299  and the moving mechanism  250  in a manner drivable together. The second coupling mechanism  240 B includes a plurality of coupling gears  281  and  282 , the rotation shaft  283 A, and a coupling gear  241  replacing the coupling gear  283 . The second coupling mechanism  240 B includes no one-way clutch  290 . The coupling gear  241 , which is a spur gear, is arranged on the right front of the coupling gear  282 . The coupling gear  241  has its rear left end meshing with the front right end of the small-diameter gear of the coupling gear  282 . The rotation shaft  283 A has the lower end portion received and fixed in the center hole of the coupling gear  241 . Unlike the coupling gear  283  in the above embodiment, the coupling gear  241  does not mesh with the coupling gear  284 . 
     The operation of each component of the discharging unit  200 B performed when the discharge motor  298  is driven will now be described. The driving force of the discharge motor  298  is transmitted by the first coupling mechanism  280 B from the output shaft  298 A via the coupling gears  287 ,  288 ,  289 , and  284 , the moving gear  285 , and the rotation shaft  285 A to the discharging roller  220  in this order. Thus, when the discharge motor  298  rotates clockwise (arrow R 5 ) in a bottom view, the discharging roller  220  rotates in the discharge direction (arrow R 3 ). When the discharge motor  298  rotates counterclockwise (arrow R 6 ) in a bottom view, the discharging roller  220  rotates in the return direction (arrow R 4 ). The printing device  1  drives the discharge motor  298  to rotate the discharging roller  220  at the same position in the discharge direction and in the return direction. More specifically, the printing device  1  drives the discharge motor  298  to rotate the discharging roller  220  in the discharge direction and in the return direction without the discharging roller  220  moving between the nip position and the release position. 
     The operation of each component of the discharging unit  200 B performed when the discharge motor  299  is driven will now be described. The driving force of the discharge motor  299  is transmitted by the second coupling mechanism  240 B from the output shaft  299 A via the coupling gears  281 ,  282 , and  241 , and the rotation shaft  283 A to the rotator  251  in this order. Thus, when the discharge motor  299  rotates reversely (arrow R 2 ), the rotator  251  rotates clockwise about the rotation shaft  283 A in a bottom view. The moving mechanism  250  moves the discharging roller  220  to the nip position or the release position, as in the above embodiment. 
     The printing device  1  including the discharging unit  200 B according to the second modification drives the discharge motors  298  and  299  at the same time to rotate the discharging roller  220  in the discharge direction and in the return direction when the discharging roller  220  moves between the nip position and the release position. In this case, the CPU  81  according to the second modification may perform first tape-end detection described below in place of the first tape-end detection performed in the above embodiment. 
     The first tape-end detection according to the second modification will now be described with reference to  FIG. 27 . The CPU  81  starts driving the discharge motor  298  counterclockwise (arrow R 6 ) in a bottom view to start rotating the discharging roller  220  in the return direction (arrow R 4 ) (S 131 ). The CPU  81  starts driving the transport motor  68  reversely to start transporting the tape reversely (S 31 ). The CPU  81  stops driving the transport motor  68  to stop transporting the tape reversely (S 32 ). The CPU  81  stops driving the discharge motor  298  to stop rotating the discharging roller  220  (S 132 ). The processing in S 33  and subsequent steps is the same as the processing in the first tape-end detection according to the above embodiment, and will not be described. In the second tape-end detection, the CPU  81  may perform the same processing as in S 131  after S 42  and before S 43 , and the same processing as in S 132  after S 44  and before S 45 . 
     In the first tape-end detection according to the second modification, the discharging roller  220  rotates in the return direction during the reverse transport. The tape in contact with the discharging roller  220  during the reverse transport is not prevented from being transported reversely. The printing device  1  thus reduces jamming of the tape during the reverse transport. 
     The moving mechanism  250  according to the second modification may include a rack and pinion mechanism in place of the rotator  251  and the eccentric member  252 . For example, a pinion may be arranged on the upper end portion of the rotation shaft  283 A. A rack extends in the lateral direction to mesh with the pinion. The rack includes a vertical rod, which is received in the first support hole  266 . The printing device  1  switches the discharge motor  299  between the forward rotation and the reverse rotation to move the roller holder  255  in the lateral direction with the rack and pinion mechanism. The first support hole  266  may not be long in the front-rear direction. 
     In the above embodiment, the discharging roller  220  is moved to the nip position or the release position, and is driven to rotate by the discharge motor  299 . In some embodiments, the discharging roller  220  may not be driven to rotate by the discharge motor  299 . A discharging unit  200 C according to a third modification will now be described with reference to  FIG. 28 . The discharging unit  200 C differs from the discharging unit  200  of the above embodiment in further including a discharge motor  296 , a first coupling mechanism  280 C replacing the first coupling mechanism  280 , and a second coupling mechanism  240 C replacing the second coupling mechanism  240 . The discharge motor  296  is fixed to the right side of the second frame  212  at the right end of the first frame  211  to connect to the CPU  81  (refer to  FIG. 18 ). The discharge motor  296  has an output shaft  296 A extending downward from the discharge motor  296 . The discharge motor  296  can rotate the output shaft  296 A clockwise (arrow R 7 ) and counterclockwise (arrow R 8 ) in a bottom view. 
     The first coupling mechanism  280 C is arranged in a lower portion of the discharging unit  200 C to couple the discharge motor  296  and the opposing rollers  230  in a manner drivable together. The first coupling mechanism  280 C includes coupling gears  243  to  246  and a rotation shaft  230 B. The rotation axes of the coupling gears  243  to  246  extend vertically. The coupling gear  243  is a spur gear fixed to a lower end portion of the output shaft  296 A. 
     The coupling gear  244 , which is a spur gear, is arranged on the left rear of the coupling gear  243 . The coupling gear  244  has its front right end meshing with a rear left end of the coupling gear  243 . A rotation shaft  244 A is rotatably received in the center hole of the coupling gear  244 . The rotation shaft  244 A is columnar and fixed to the first frame  211  and extending downward from the first frame  211 . The coupling gear  245 , which is a double gear including a large-diameter gear and a small-diameter gear, is arranged on the left front of the coupling gear  244 . The small-diameter gear of the coupling gear  245  has its rear right end meshing with a front left end of the coupling gear  244 . A rotation shaft  245 A is rotatably received in the center hole of the coupling gear  245 . The rotation shaft  245 A is columnar and fixed to the first frame  211  and extending downward from the first frame  211 . The coupling gear  246 , which is a spur gear, is arranged on the left front of the coupling gear  245 . The coupling gear  246  has its rear right end meshing with a front left end of the large-diameter gear of the coupling gear  245 . 
     The rotation shaft  230 B is used in place of the rotation shaft  230 A of the above embodiment. The rotation shaft  230 B extends parallel to the rotation shaft  285 A. In  FIG. 28 , the broken lines indicate a portion of the rotation shaft  230 B below the lower end of the opposing rollers  230 . The rotation shaft  230 B has a D-shaped lower end portion. The portion of the rotation shaft  230 B other than the lower end portion is columnar. The rotation shaft  230 B has a lower end portion extending below the first frame  211 , and received and fixed in the center hole of the coupling gear  246 . The rotation shaft  230 B has an upper end portion extending to the upper end of the hole  212 A, and received and fixed in the center hole of the opposing rollers  230 . The rotation shaft  230 B is rotatably supported by the inner walls above and below the hole  212 A. The second coupling mechanism  240 C has the same mechanism as the second coupling mechanism  240 B according to the second modification, and will not be described. 
     The operation of each component of the discharging unit  200 C performed when the discharge motor  296  is driven will now be described. The driving force of the discharge motor  296  is transmitted by the first coupling mechanism  280 C from the output shaft  296 A via the coupling gears  243 ,  244 ,  245  and  246 , and the rotation shaft  230 B to the opposing rollers  230  in this order. Thus, when the discharge motor  296  rotates counterclockwise (arrow R 7 ) in a bottom view, the opposing rollers  230  rotate counterclockwise in a bottom view. The tape is transported forward while being in contact with the opposing rollers  230  rotating counterclockwise in a bottom view. When the discharge motor  296  rotates clockwise (arrow R 8 ) in a bottom view, the opposing rollers  230  rotate clockwise in a bottom view. The tape is transported reversely while being in contact with the opposing rollers  230  rotating clockwise in a bottom view. The operation of each component of the discharging unit  200 C performed when the discharge motor  299  is driven is the same as the operation of each component of the discharging unit  200 B performed when the discharge motor  299  is driven, and will not be described. 
     In the above embodiment, the eccentric member  252  at the left end of the movable range of the eccentric member  252  in the lateral direction is spaced from the tape. More specifically, the discharging roller  220  is at the release position. In some embodiments, the discharging roller  220  is not moved to the release position. More specifically, when the eccentric member  252  is at the left end of the movable range of the eccentric member  252  in the lateral direction, the discharging roller  220  may hold the tape between the discharging roller  220  and the opposing rollers  230 . A discharging unit according to a fourth modification (not shown) will now be described. The discharging unit according to the fourth modification may have the eccentric member  252  at a radially smaller distance to the rotation shaft  283 A than the eccentric member  252  of the above embodiment. More specifically, when the eccentric member  252  is at the left end of the movable range of the eccentric member  252  in the lateral direction, the distance between the right end of the discharging roller  220  and the left ends of the opposing rollers  230  may be smaller than the thickness of the tape. When the eccentric member  252  is at the left end of the movable range of the eccentric member  252  in the lateral direction, the right end of the discharging roller  220  and the left ends of the opposing rollers  230  may come in contact with each other with no tape being held. 
     The above structure allows the printing device  1  according to the fourth modification to adjust the holding load at the second holding position P 5  in accordance with the position of the eccentric member  252  in the lateral direction. The printing device  1  can adjust the holding load at the second holding position P 5  to one of three levels, namely, a first load, a third load, and a fourth load. The third load and the fourth load may be hereafter collectively referred to as a second load. The printing device  1  may adjust the holding load at the second holding position P 5  to one of the two levels including the first load and the second load, or to one of at least four levels. 
     The second load is smaller than the first load. The fourth load is smaller than the third load. For the printing device  1  according to the fourth modification, the first load is a holding load at the second holding position P 5  applied when the eccentric member  252  is at the right end of the movable range of the eccentric member  252  in the lateral direction. The third load is a holding load at the second holding position P 5  applied when the eccentric member  252  is at the center of the movable range of the eccentric member  252  in the lateral direction. The fourth load is a holding load at the second holding position P 5  applied when the eccentric member  252  is at the left end of the movable range of the eccentric member  252 . In this modification, the CPU  81  may perform main processing described below. 
     The main processing according to the fourth modification will now be described with reference to  FIGS. 29 to 33  focusing on its differences from the above embodiment. 
     As shown in  FIG. 29 , the CPU  81  performs initial processing (S 211 ). The initial processing S 211  differs from the initial processing in the above embodiment (S 11 ) in adjusting the holding load at the second holding position P 5  to the fourth load. More specifically, the CPU  81  drives the discharge motor  299  reversely to move the eccentric member  252  to the left end of the movable range of the eccentric member  252  in the lateral direction. The CPU  81  advances to S 12 . 
     In S 13 , when the tape is the die-cut tape  9  (Yes in S 13 ), the CPU  81  adjusts the holding load at the second holding position P 5  to the first load (S 212 ). More specifically, the CPU  81  drives the discharge motor  299  reversely until receiving a detection signal from the position sensor  295 . This moves the eccentric member  252  to the right end of the movable range of the eccentric member  252  in the lateral direction. The CPU  81  advances to S 21 . In S 25  and S 26 , first tape-end detection and second tape-end detection described below will be performed. 
     The first tape-end detection according to the fourth modification will now be described with reference to  FIG. 32 . The CPU  81  starts driving the transport motor  68  to rotate reversely to start transporting the tape reversely (S 31 ). This transports the tape reversely under the fourth load as the holding load at the second holding position P 5 . The CPU  81  determines whether an adjustment time has elapsed (S 231 ). The adjustment time is prestored in the ROM  83 . The adjustment time is shorter than the time taken to transport the tape reversely (specifically, the time taken before S 32  after S 31 ). When the adjustment time has not elapsed (No in S 231 ), the CPU  81  waits until the adjustment time elapses. 
     When the adjustment time has elapsed (Yes in S 231 ), the CPU  81  adjusts the holding load at the second holding position P 5  to the third load (S 232 ). More specifically, the CPU  81  drives the discharge motor  299  reversely for a predetermined time to move the eccentric member  252  to the center of the movable range of the eccentric member  252  in the lateral direction. This transports the tape reversely under the third load as the holding load at the second holding position P 5 . The CPU  81  stops driving the transport motor  68  to stop transporting the tape reversely (S 32 ). 
     The second tape-end detection according to the fourth modification will now be described with reference to  FIG. 33 . The CPU  81  adjusts the holding load at the second holding position P 5  to the fourth load (S 241 ). More specifically, the CPU  81  drives the discharge motor  299  reversely for a predetermined time to move the eccentric member  252  to the left end of the movable range of the eccentric member  252  in the lateral direction. The processing in S 242  is the same as the processing in S 231 , and the processing in S 243  is the same as the processing in S 232 . 
     As shown in  FIG. 30 , subsequent to the first tape-end detection or the second tape-end detection, the CPU  81  drives the discharge motor  299  reversely to adjust the holding load at the second holding position P 5  to the fourth load (S 261 ). The CPU  81  performs the processing in S 64 , S 66 , and S 67  in this order before advancing to S 271  (refer to  FIG. 31 ). In other words, the CPU  81  skips the processing in S 65  and S 68  (refer to  FIG. 20 ) in the main processing according to the above embodiment. 
     As shown in  FIG. 31 , the CPU  81  drives the discharge motor  299  reversely to adjust the holding load at the second holding position P 5  to the first load (S 271 ). The CPU  81  advances to S 71 . After S 83 , the CPU  81  drives the discharge motor  299  reversely to adjust the holding load at the second holding position P 5  to the fourth load (S 281 ). The CPU  81  returns to S 24  (refer to  FIG. 29 ). After S 93 , the CPU  81  drives the discharge motor  299  reversely to adjust the holding load at the second holding position P 5  to the fourth load (S 291 ). The CPU  81  returns to S 211  (refer to  FIG. 29 ). 
     A discharging unit  200 D according to a fifth modification will now be described with reference to  FIG. 34 . The discharging unit  200 D differs from the above embodiment in including a first coupling mechanism  280 D in place of the first coupling mechanism  280 . The first coupling mechanism  280 D includes the coupling gears  281  to  284 , the moving gear  285 , the rotation shaft  285 A, and further a one-way clutch  291 . The one-way clutch  291  is arranged between the center hole of the moving gear  285  and the lower end portion of the rotation shaft  285 A. In  FIG. 34 , the broken lines indicate the portion of the rotation shaft  285 A arranged inside the moving gear  285  and the first frame  211 , and the one-way clutch  291 . The rotation shaft  285 A has the lower end portion rotatably received in the center hole of the moving gear  285 . The one-way clutch  291  may be arranged between the upper end portion of the rotation shaft  285 A and the center hole of the discharging roller  220 . 
     The one-way clutch  291  couples the discharge motor  299  and the rotation shaft  285 A (discharging roller  220 ) in a manner drivable together when the discharge motor  299  rotates forward, and decouples the discharge motor  299  from the rotation shaft  285 A (discharging roller  220 ) when the discharge motor  299  rotates reversely. When the discharge motor  299  rotates forward (arrow R 1 ), the moving gear  285  is rotated counterclockwise in a bottom view via the coupling gears  281  to  284 . The one-way clutch  291  rotates the rotation shaft  285 A together with the moving gear  285  as the moving gear  285  rotates counterclockwise in a bottom view. When the discharge motor  299  rotates reversely (arrow R 2 ), the moving gear  285  is rotated clockwise in a bottom view via the coupling gears  281  to  284 . The one-way clutch  291  causes the rotation shaft  285 A to rotate without meshing with the moving gear  285  as the moving gear  285  rotates clockwise in a bottom view. 
     The first coupling mechanism  280 D includes a second switching mechanism (one-way clutch  291 ) that couples the discharge motor  299  and the discharging roller  220  in a manner drivable together when the discharge motor  299  rotates forward, and decouples the discharge motor  299  from the discharging roller  220  when the discharge motor  299  rotates reversely. 
     In this case, the reverse rotation force of the discharge motor  299  is not transmitted from the moving gear  285  to the discharging roller  220 . Thus, the discharging roller  220  does not rotate in the return direction (arrow R 4 ) when the discharge motor  299  rotates reversely. Thus, the printing device  1  drives the discharge motor  299  reversely to move the discharging roller  220  to the nip position or the release position while the discharging roller  220  stops rotating. The printing device  1  according to the fifth modification prevents the tape from being transported reversely when the tape comes in contact with the discharging roller  220  that is moving to the nip position and the release position. The one-way clutch  291  corresponds to the second switching mechanism. 
     The above embodiment may further be modified in the following forms. For example, the urging member  297 , which is a torsion spring in the above embodiment, may be a different spring, such as a helical compression spring, a disc spring, and a leaf spring, or an elastic member such as a rubber member. The urging member  256 , which is a helical compression spring, may be a different spring, such as a disc spring and a leaf spring, or an elastic member such as a rubber member. 
     The printing device  1  may include another urging member (not shown). The urging member is, for example, a torsion spring fixed to a fixing portion. Similarly to the urging member  297 , this urging member is not limited to a torsion spring. The fixing portion is arranged around the lower rear of the rotator  251 . The urging member has its two ends extending frontward. When the discharging roller  220  is at the nip position, the enlarged-diameter portion  253  is located on the right of the rotation shaft  283 A. At this position, the recess  253 A is open rightward, and is spaced from the end of the urging member. When the discharging roller  220  is at the release position, the enlarged-diameter portion  253  is located on the left of the rotation shaft  283 A. At this position, the recess  253 A is open leftward, with which the end of the urging member is engaged from the left. The urging member urges the enlarged-diameter portion  253  obliquely to the right rear. More specifically, the urging member urges the rotator  251  counterclockwise in a bottom view. The urging member restricts the discharging roller  220  moving from the release position to the nip position with the rotator  251  rotating counterclockwise in a bottom view. The urging force of the urging member is smaller than the force to rotate the rotator  251  counterclockwise in a bottom view. This maintains the discharging roller  220  at the release position under the urging force of the urging member. In other words, the printing device  1  may include an urging member that urges the rotator  251  to maintain the discharging roller  220  at the release position. In this case, the printing device  1  prevents the discharging roller  220  from unintendedly moving from the release position to the nip position. The urging member corresponds to a second urging member. This urging member and the urging member  297  may be integral. More specifically, the urging member  297  may urge the rotator  251  to maintain the discharging roller  220  at the release position. 
     The structure of the cutter unit  100  is not limited to the structure described in the above embodiment. For example, the cutter unit  100  may perform either full cutting or partial cutting. The cutter unit  100  may include a single cut-blade that can fully or partially cut the tape. The cutter unit  100  may be a disk-shaped rotary cutter that rotates to cut a tape. The cutter unit  100  may be a slide cutter that moves in the width direction of a tape to cut the tape. The cutter unit  100  may include no cutter motor  105 , but may include a manual cutter. The cutter unit  100  may perforate the tape in the width direction for partial cutting. 
     The number of coupling gears  281  to  284  is not limited to the number in the above embodiment. The first coupling mechanism  280  and the second coupling mechanism  240  may each include, for example, a belt or a pulley. The printing device  1  may use, for example, a belt in place of the transport roller  66  to transport the tape. 
     In the above embodiment, the roller holder  255  moves linearly in the lateral direction along the guide frame  214 . In some embodiments, the printing device  1  may include, in place of the guide frame  214 , a member that guides the roller holder  255  to move along the peripheral surface  284 B of the coupling gear  284 . In this case, the second support hole  271  may not be long in the front-rear direction. More specifically, the second support hole  271  may simply rotatably support the rotation shaft  285 A. 
     The first frame  211  may be located below the moving gear  285 . In this case, the first frame  211  may have a guide groove in place of the guide hole  211 A. The guide groove is recessed downward from the first frame  211 . The lower end portion of the rotation shaft  285 A slides in the guide groove. The first support hole  266  and the second support hole  271  may be each replaced by protrusions. In this case, the eccentric member  252  and the rotation shaft  285 A may each have their upper ends recessed. The recesses receive the protrusions to support the eccentric member  252  and the rotation shaft  285 A. 
     In the above embodiment, the holding load at the second holding position P 5  is smaller than the holding load at the first holding position P 2 . The holding load at the first holding position P 2  is smaller than the holding load at the print position P 1 . In some embodiments, the holding load at the second holding position P 5  may be equal to or greater than the holding load at the first holding position P 2  or the holding load at the print position P 1 . The holding load at the first holding position P 2  may be equal to or greater than the holding load at the print position P 1 . 
     The mark sensor  31  and the tape sensor  32 , which are transmissive photosensors in the above embodiment, may include reflective photosensors or other sensors. The position sensor  295 , which is a switch sensor in the above embodiment, may be a photosensor or another sensor. In the above embodiment, the position sensor  295  detects the discharging roller  220  at the nip position by detecting the position of the first member  260 . In some embodiments, the position sensor  295  may directly detect the position of the discharging roller  220 . For example, the position sensor  295  may have the movable piece  295 A located on a pathway along which the rotation shaft  285 A moves. The position sensor  295  may detect the discharging roller  220  at the release position. The marks  99  are not limited to through-holes, and may include any marks, such as irregularity, colored portions, detectable by the mark sensor  31 . The marks  99  may not be on the release paper  92  between the adjacent backings  91 , and may be on the backings  91  or on the side of the release paper  92  opposite to the backings  91 . 
     The plurality of cylindrical opposing rollers  230  may be replaced by a single cylindrical opposing roller. The single cylindrical discharging roller  220  may be replaced by a plurality of cylindrical discharging rollers. The elastic discharging roller  220  and the opposing rollers  230  may be replaced by nonelastic members made of, for example, metal. The opposing rollers  230  may be nonrotatable, and may be replaced by, for example, an elastic plate. 
     The printing device  1  may be operable without the discharge motor  299 . More specifically, the discharging roller  220  and the opposing rollers  230  may rotate while in contact with the tape being transported. The discharging roller  220  may be manually moved to the nip position or the release position. 
     In the above embodiment, the rotation determination table  30  shows four levels of the preset rotation amount of the discharging roller  220 , namely, large, intermediate, small, and none. The preset rotation amount may also be one of five or more levels or three or less levels. For example, the die-cut tape  9  may be associated with a level other than none, and the tapes other than the die-cut tape  9  may be associated with none. The rotation determination table  30  may include the preset rotation amount of the discharging roller  220  associated with other types of tape (e.g., a tube tape). 
     In the above embodiment, the printing device  1  is a general-purpose printing device that can receive a variety of cassettes. In some embodiments, the printing device  1  may be a special-purpose printing device that can receive one specific type of cassette. In this case, the printing device  1  may not obtain tape information. For example, the CPU  81  included in the printing device dedicated to a cassette accommodating the die-cut tape  9  may move the discharging roller  220  to the nip position in the initial processing. The printing device  1  more reliably prevents the backings  91  in the die-cut tape  9  from separating from the release paper  92 . The printing device  1  more reliably prevents the die-cut tape  9  from being unintendedly discharged from the cassette. 
     In the above embodiment, the CPU  81  obtains the tape information input through the input unit  4 . In some embodiments, the CPU  81  may obtain the tape information input through an external terminal to the printing device  1 . The cassette  7  may include an identifier indicating tape information. The printing device  1  may include a sensor for reading the tape information from the identifier. Examples of the identifier include, for example, irregularity including a pattern associated with a tape type, a quick response (QR) code (registered trademark), and an integrated circuit (IC) chip. The CPU  81  may obtain the tape information read by the sensor. 
     In the above embodiment, the CPU  81  receives the print instruction input through the input unit  4 . In some embodiments, the CPU  81  may receive the print instruction input to the printing device  1  through an external terminal. 
     The printing device  1  may print on a tape while transporting the tape reversely. In this case, the printing device  1  may have the discharging roller  220  at the release position to print on a tape while transporting the tape reversely. 
     In the above embodiment, the preset rotation amount of the discharging roller  220  is smaller when the value K of the print counter is two or more than when the value K is one. In some embodiments, the preset rotation amount of the discharging roller  220  may be the same when the value K is two or more and when the value K is one, or may be larger when the value K is two or more than when the value K is one. More specifically, the printing device  1  may skip S 73  and S 74 . 
     In the above embodiment, the CPU  81  starts rotating the discharging roller  220  in the discharge direction in S 61  before starting printing in S 62 . In some embodiments, the CPU  81  may start rotating the discharging roller  220  in the discharge direction after starting printing in S 62  and determining that the tape has the front end transported forward to the second holding position P 5 . When the tape has its front end upstream from the second holding position P 5  in the transport direction, the tape does not come in contact with the discharging roller  220 . In this case, the printing device  1  may not drive the discharge motor  299  to reduce power consumption. 
     In the above embodiment, the CPU  81  stops printing in S 66  after starting to move the discharging roller  220  to the nip position in S 65 . In some embodiments, the CPU  81  may stop printing in S 66  before starting to move the discharging roller  220  to the nip position. In this case, the printing device  1  holds the tape so as not to be transported between the discharging roller  220  and the opposing rollers  230 . Thus, the printing device  1  prevents the tape from coming in contact with the discharging roller  220  during transportation, and thus the tape is not prevented from being transported. In this case, the CPU  81  may stop rotating the discharging roller  220  in the discharge direction before starting to move the discharging roller  220  to the nip position after stopping the printing in S 66 . This rotates the discharging roller  220  in the discharge direction during the printing. Thus, the printing device  1  does not prevent transporting of the tape in contact with the discharging roller  220  during printing. 
     In the above embodiment, after the discharge stop time elapses (Yes in S 63 ), the CPU  81  stops rotating the discharging roller  220  (S 64 ). The discharging roller  220  during the printing may be stopped at any other time point. For example, the CPU  81  may stop rotating the discharging roller  220  after stopping controlling the thermal head  60  and before stopping rotating the transport motor  68 . To print a plurality of characters, the CPU  81  may stop rotating the discharging roller  220  once completely printing a character(s) with a predetermined number of characters remaining unprinted before the last character. The CPU  81  may stop rotating the discharging roller  220  after printing a line(s) with a predetermined number of lines remaining unprinted before the last line of total lines. For example, the CPU  81  may perform printing with a lower transportation speed in the middle of printing. The printing with a lower transportation speed refers to printing on a tape by controlling the transport motor  68  to lower the transportation speed of the tape and thus by controlling the thermal head  60 . The CPU  81  may stop rotating the discharging roller  220  in response to the start of such printing with a lower transportation speed. 
     The CPU  81  transports the die-cut tape  9  forward until detecting the mark  99  in S 54 . In some embodiments, the CPU  81  may transport the die-cut tape  9  forward by a predetermined amount. In this modification, the CPU  81  may determine whether the mark sensor  31  has outputted the detection signal after transporting the die-cut tape  9  forward by the predetermined amount. When receiving no detection signal from the mark sensor  31 , the CPU  81  may notify an error message through, for example, a speaker (not shown) or a display screen (not shown). 
     In the second tape-end detection according to the above embodiment, the CPU  81  moves the discharging roller  220  to the release position in S 41  and S 42  before transporting the die-cut tape  9  reversely in S 43  and S 44 . In some embodiments, the CPU  81  may transport the die-cut tape  9  reversely before moving the discharging roller  220  to the release position. In other words, the CPU  81  may start the second tape-end detection in the order of S 43 , S 44 , S 41 , and S 42 . The tape is not limited to the die-cut tape  9 . The CPU  81  may determine, in accordance with the type of the tape, whether to move the discharging roller  220  to the release position before transporting the tape reversely. For example, the CPU  81  may not determine to move the discharging roller  220  to the release position before reversely transporting the tape that is less flexible. 
     The CPU  81  may be replaced by a processor such as a microcomputer, an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA). The main processing may be performed by a plurality of processors in a distributed manner. The non-transitory storage medium is a storage medium that can simply store information for any duration. The non-transitory storage medium may not include a transitory storage medium (e.g., transmission signals). The program may be downloaded from, for example, a server connected to the network (specifically, transmitted as transmission signals) and stored in the flash memory  82 . The programs may be stored simply in a non-transitory storage medium, such as a hard disk drive included in the server.