JP2019059110A - Printer - Google Patents

Abstract

To improve replacement workability of an ink ribbon in a printer.SOLUTION: A printer makes prints on a print medium by using an ink ribbon and includes: a ribbon shaft for detachably attaching the ink ribbon to the printer; an attachment/detachment mechanism which shifts one end part side of the ribbon shaft to a state in which the one end part side is attached to the printer or a state in which the one end part side can be removed from the printer; and a holding mechanism which holds the other end part side of the ribbon shaft and causes the other end part side of the ribbon shaft to engage with the printer in a state in which the one end part side of the ribbon shaft is attached and a state in which the one end part side can be removed in the attachment/detachment mechanism.SELECTED DRAWING: Figure 5

Description

The present invention relates to a printer.

  Patent Document 1 includes a ribbon supply shaft for holding the ink ribbon supplied to the printing section in a roll, and a ribbon winding shaft for winding up the used ink ribbon, and heating the ink ribbon to form an ink ribbon. A thermal transfer printer has been disclosed that transfers ink to a print medium for printing.

  In the printer of Patent Document 1, when replacing the ink ribbon, the insertion path of the ink ribbon is expanded so that a new ink ribbon can be easily bridged from the supply shaft to the take-up shaft.

JP, 2009-179010, A

  In the printer of Patent Document 1, both ends of the spool shaft around which the ink ribbon is wound are held by the spool shaft mounting portion. The spool shaft mounting portion includes a coil spring and biases the spool shaft inward from both ends.

  For this reason, when replacing the spool shaft, it is necessary to remove the spool shaft after moving one end of the spool shaft in the direction in which the coil spring is contracted and separating the other end from the spool shaft mounting portion It is.

  According to the printer of Patent Document 1, although the user can easily carry out the work of bridging the ink ribbon by the user, the user can use the spool shaft as described above by using the limited space in the open state of the printing unit. You must do the removal operation. For this reason, there is still room for improvement in the attaching / detaching operation of the spool shaft.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a printer capable of improving the operability of replacing an ink ribbon.

  According to an aspect of the present invention, there is provided a printer for printing on a printing medium using an ink ribbon, the ribbon shaft for detachably attaching the ink ribbon to the printer, and one end side of the ribbon shaft And a holding mechanism for shifting to a state where it is mounted in the printer or in a state where it can be removed from the printer, and the other end side of the ribbon shaft is held, and one end side of the ribbon shaft in the mounting mechanism A printer is provided, comprising: a holding mechanism that engages the other end of the ribbon shaft and the printer in a mounted state and in a removable state.

  According to the present invention, the operability of replacing the ink ribbon in the printer can be improved.

FIG. 1 is a perspective view of a printer 100 according to an embodiment of the present invention. FIG. 2 is a schematic block diagram of the printer 100 according to the embodiment of the present invention. FIG. 3 is a schematic configuration view showing a state in which the cover 11 and the printing unit 30 of the printer 100 according to the embodiment of the present invention are opened. FIG. 4 is a front view of the partition member 35 in the ribbon replacement position. FIG. 5 is a perspective view for explaining the partition member 35. As shown in FIG. FIG. 6 is a perspective view for explaining the ribbon shaft 310 (ribbon supply shaft 33). FIG. 7 is a perspective view for explaining a state in which the ribbon shaft 310 (the ribbon supply shaft 33) is removed. FIG. 8 is a front view of a partition member 400 shown as another embodiment.

  Hereinafter, a printer 100 according to an embodiment of the present invention will be described with reference to the attached drawings.

  FIG. 1 is a perspective view of a printer 100 according to an embodiment of the present invention. FIG. 2 is a schematic configuration diagram of the printer 100 according to the embodiment of the present invention.

  The printer 100 is a thermal transfer type printer that performs printing by heating the ink ribbon R to transfer the ink of the ink ribbon R onto the print medium M. The print medium M is, for example, a label continuum in which a plurality of labels are temporarily and successively attached to a band-shaped backing sheet.

  As shown in FIGS. 1 and 2, the printer 100 includes a housing 10 and a cover 11 that covers the opening of the housing 10. Here, the case 10 also includes a part of the internal structure that constitutes the printer 100 main body.

  As shown in FIG. 2, the print medium M is held by the medium supply shaft 12 in a rolled state. As the print medium M, a pasteless label or a fanfold type medium can be used.

  The cover 11 has an end on one end side pivotally supported by a support shaft 13 provided on the housing 10. The cover 11 can be switched between a closed state (see FIG. 2) for closing the opening of the housing 10 and an open state (see FIG. 3) for opening by pivoting the support shaft 13 as a fulcrum. .

  The housing 0 is provided with a lock mechanism (not shown) for keeping the cover 11 in the closed state. The lock mechanism is released by operating the lever 14 shown in FIG.

  Between the end on the other end side of the cover 11 and the housing 10, a discharge port 16 is formed where the print medium M printed by the print unit 15 shown in FIG.

  The cutter 17 facing the discharge port 16 is attached to the cover 11 of the present embodiment. Thereby, the printed print medium M discharged from the discharge port 16 can be cut. In addition, it can replace with the cutter 17 and can attach various other units, such as a peeling unit and a verification machine, to the cover 11. FIG.

  In addition, the cover 11 is provided with an operation unit 19 for operating the printer 100. The operation unit 19 includes various operation buttons, a display, a short distance wireless communication module, an LED, and the like. The display may be a touch panel.

  Inside the printer 100, a printing unit 30 for printing on the printing medium M, a controller 40 for controlling the operation of the printer 100, and the like are accommodated.

  The printing unit 30 includes a main body 31 whose one end is pivotally supported by the support shaft 13 and a thermal head 32 attached to the main body 31.

  The thermal head 32 and the platen roller 20 provided in the housing 10 constitute a printing unit 15 that prints on the printing medium M.

  The printing unit 30 further includes a ribbon supply shaft 33 for holding the ink ribbon R supplied to the printing unit 15 in a roll, a ribbon winding shaft 34 for winding the used ink ribbon R, and the ink ribbon R and printing. A partition member 35 for partitioning the medium M, a guide shaft 36 defining a transport path of the ink ribbon R from the ribbon supply shaft 33 to the printing unit 15, and an ink ribbon R from the printing unit 15 to the ribbon winding shaft 34 And a guide shaft 37 which defines a transport path of The ribbon supply shaft 33 is detachably attached to the partition member 35. Note that the ink ribbon R of the present embodiment is a front wound ink crib with the surface to which the ink is applied being the outside.

  The print medium M is supplied from the medium supply shaft 12 to the print unit 15 and is nipped between the thermal head 32 and the platen roller 20 together with the ink ribbon R.

  When the heating elements of the thermal head 32 are energized while the printing medium M and the ink ribbon R are held between the thermal head 32 and the platen roller 20, the ink of the ink ribbon R is printed by the heat of the heating elements. The image is transferred to the medium M, and printing on the printing medium M is performed.

  When the platen roller 20 is rotated forward by a platen drive motor (not shown), the print medium M and the ink ribbon R are transported to the downstream side in the transport direction, and the print medium M is discharged from the discharge port 16 to the outside of the printer 100. Exhausted.

  Further, as shown in FIG. 2, the printer 100 includes a reflection sensor 21. The reflection sensor 21 is a sensor that detects an eye mark printed in advance at a predetermined interval on the surface of the print medium M opposite to the surface on which printing is performed. Thereby, the position in the conveyance direction of the print medium M can be detected.

  The printer 100 further includes a transmission sensor 22 that detects the position of the print medium M in the transport direction.

  The transmission sensor 22 receives a light emitting unit 22a as a light emitting unit that emits a predetermined light, and a light receiving unit that receives light emitted from the light emitting unit 22a and outputs an electric signal corresponding to the intensity of the received light. And a unit 22b.

  For example, in the case where the print medium M is a label continuum in which a plurality of labels are temporarily attached to a band-like backing at a predetermined interval, only a part of the backing is present between two adjacent labels. Do.

  The transmission amount of the light emitted from the light emitting unit 22a is different between the portion where the label is present and the portion where only the mount is present, so the intensity of the light received by the light receiving unit 22b changes. Thus, the transmission sensor 22 can detect the position of the print medium M in the transport direction.

  As shown in FIG. 2, the partition member 35 supports the base portion 35a, the shaft portion 35b provided on one end side of the base portion 35a, and the ribbon supply shaft 33 parallel to the shaft portion 35b and rotatably supported. It has the part 35c and the engaging part 35e formed in the center part of the axial part 35b.

  The partition member 35 is swingably supported by the main body 31 by the shaft 35 b.

  Further, as shown in FIG. 2, the base portion 35 a of the partition member 35 extends to a position facing the reflection sensor 21 provided in the housing 10. Thus, the transport path of the print medium M is formed between the reflection sensor 21 and the portion of the partition member 35 facing the reflection sensor 21.

  The reflection sensor 21 is a sensor that detects an eye mark printed in advance at a predetermined interval on the surface of the print medium M opposite to the surface on which printing is performed. Thereby, the position in the conveyance direction of the print medium M can be detected.

  The engaging portion 35e is configured to engage with the engaged portion 11a provided on the cover 11 as shown in FIG. When the partition member 35 is in the position (closing position) where the engaging portion 35 e engages with the engaged portion 11 a, the ribbon supply shaft 33 is accommodated in the main body portion 31. As a result, the ribbon supply shaft 33 is at the ribbon supply position for supplying the ink ribbon R to the printing unit 15.

  When printing is performed by the printer 100, the cover 11 is closed, and the engaging portion 35e of the partition member 35 is engaged with the engaged portion 11a of the cover 11.

  In the present embodiment, the partition member 35 guides the print medium M, whereby the print medium M is stably transported within a predetermined distance from the reflection sensor 21. Thereby, the detection accuracy of the reflection sensor 21 can be improved.

  When the printer 100 is in a printable state, that is, in the state shown in FIG. 2, the partition member 35 automatically guides the print medium M.

  As described above, since the print medium M is guided by the partition member 35, there is no need to additionally provide a guide member for conveying the print medium M within a certain distance from the reflection sensor 21. The operation of inserting the print medium M is also unnecessary.

  Further, when the cover 11 is changed from the closed state to the open state, the printing unit 30 is swung integrally with the cover 11, and the opening of the housing 10 is opened.

  Thereby, the setting of the print medium M to the printer 100 and the maintenance of each part in the housing 10 can be performed.

  Furthermore, when the engagement between the engaging portion 35e and the engaged portion 11a is released from the state where the opening of the housing 10 is opened, and the partitioning member 35 is swung toward the housing 10, the partitioning member 35 is in the open position shown in FIG.

  As the partition member 35 is in the open position, the roll-shaped ink ribbon R held by the ribbon supply shaft 33 and the ribbon supply shaft 33 moves relative to the ribbon winding shaft 34, and the printing medium M Exposed to the outlet 16 side.

  As a result, the ribbon supply shaft 33 is at the ribbon replacement position where it can be detached from the printer 100, and the ink ribbon R can be replaced.

  The controller 40 includes a microprocessor, a storage device such as a ROM or a RAM, an input / output interface, a bus connecting these, and the like. Print data from an external computer, a signal from the transmission sensor 22, a signal from the reflection sensor 21 and the like are input to the controller 40 via the input / output interface.

  The controller 40 causes the microprocessor to execute a printing control program stored in the storage device, and controls the energization of the heating elements of the thermal head 32, the energization of the platen drive motor, and the like.

[Description of partition member to which ink ribbon is set]
Subsequently, in the printer 100 according to the present embodiment, the partition member 35 in which the ink ribbon R is set will be described.

  FIG. 4 is a front view of the partition member 35 in the ribbon replacement position. FIG. 5 is a perspective view for explaining the partition member 35. As shown in FIG. FIG. 6 is a perspective view for explaining the ribbon shaft 310 (ribbon supply shaft 33). FIG. 7 is a perspective view for explaining a state in which the ribbon shaft 310 (the ribbon supply shaft 33) is removed.

  The printer 100 includes an attachment / detachment mechanism 320 for attaching / detaching the ribbon shaft 310 to / from the partition member 35, and a holding mechanism 330 for holding the ribbon shaft 310 on the partition member 35.

  As shown in FIG. 4, in the partition member 35, the attaching / detaching mechanism 320 is in a state where one end 311 side of the ribbon shaft 310 for attaching the ink ribbon R to the printer 100 in a detachable manner is attached to the printer 100 or the printer 100. It is made to shift to the state which makes it removable from.

  In addition, the holding mechanism 330 holds the other end 312 side of the ribbon shaft 310, and the ribbon shaft in a state where one end 311 side of the ribbon shaft 310 is attached and removed in the attaching / detaching mechanism 320. The other end 312 side of 310 and the printer 100 are engaged.

  The ribbon shaft 310 shown in FIG. 4 corresponds to the ribbon supply shaft 33 in FIGS. 2 and 3.

  Then, each part of the partition member 35 is demonstrated.

  As shown in FIG. 6, the ribbon shaft 310 has one end 311 and the other end 312. The outer periphery 311 r of the end portion 311 is detachably attached to the partition member 35 by an attaching / detaching mechanism 320 described later.

  Further, a groove 342 is formed on the outer periphery 312 r of the end portion 312 of the ribbon shaft 310. The groove 342 is formed at a position corresponding to a second notch 323 described later, and the extension 341 formed in the second notch 323 is fitted.

  A gear 314 to which a driving force for rotating the ribbon shaft 310 is transmitted is provided on the end portion 312 side of the ribbon shaft 310 on the axially outer side of the ribbon shaft 310 of the groove 342.

  A spool shaft on which an ink ribbon R is wound, for example, a paper spool shaft is attached to the ribbon shaft 310, and a necessary amount is fed out by the rotational drive transmitted by the gear 314. ing.

  As shown in FIG. 7, in the attachment / detachment mechanism 320, a first notch 321 and a first opening 322 are formed at positions where the end 311 of the ribbon shaft 310 corresponds.

  The first notch portion 321 is formed in a shape in which the outer periphery 311 r of the end portion 311 of the ribbon shaft 310 abuts. Further, the first opening 322 is formed in the first notch 321, and is formed with a width that allows the outer periphery 311r of one end 311 of the ribbon shaft 310 to pass through.

  Further, in the holding mechanism 330, a second cutout 323 and a second opening 324 are formed at positions where the end portions 312 of the ribbon shaft 310 correspond.

  The second notch portion 323 is formed in a shape in which the outer periphery 312 r of the end portion 312 of the ribbon shaft 310 abuts. In addition, the second opening 324 is formed in the second notch portion 323, and is formed with a width through which the outer periphery 312r of the ribbon shaft 310 can pass.

  That is, the first notch 321 and the first opening 322, and the second notch 323 and the second opening 324 are each formed in a C-shape.

  The second notch portion 323 is formed with an extension portion 341 which stands up toward the opening center of the second notch portion 323.

  The extension part 341 is formed so as to be rotatably fitted in the groove part 342 formed in the ribbon shaft 310 described above.

  The width of the first opening 322, which is the opening of the first notch 321, allows the outer diameter of the end 311 of the ribbon shaft 310 to pass, but the width of the first opening 322 is the end of the ribbon shaft 310 It is formed slightly smaller than the diameter of 311.

  Therefore, when the end 311 of the ribbon shaft 310 is accommodated in the first notch 321, the elasticity of the material in which the first opening 322 is formed is used to make the first opening by the end 311 of the ribbon shaft 310. While spreading the space of the part 322, it is made to pass and it makes it position in the 1st notch 321.

  Similarly, the width of the second opening 324, which is the opening of the second cutout 323, is formed in a size that allows passage while the extension 341 is fitted into the groove 342 formed in the end 312 of the ribbon shaft 310. However, it is formed to be slightly smaller than the outer diameter of the extension part 341.

  In the printer 100 according to the present embodiment, as the attaching / detaching mechanism 320, the pushing portion 331 that pushes the ribbon shaft 310 attached to the first notch 321 toward the first opening 322 and the pushing portion 331 by the user And an operation unit 332 for performing the operation of

  The pushing portion 331 is configured to move in the direction opposite to the pushing direction of the operation portion 332 when the operation portion 332 is pushed. That is, when the operation portion 332 is pushed, the pushing portion 331 moves the end portion 311 of the ribbon shaft 310 in the direction of pushing the end portion 311 of the ribbon shaft 310 from the first cutout portion 321 to the first opening portion 322 side.

  Further, the printer 100 according to the present embodiment includes, as the holding mechanism 330, the extension portion 341, and the groove portion 342 formed on the outer periphery 312r of the end portion 312 and receiving the extension portion 341. That is, in the printer 100 according to the present embodiment, the holding mechanism 330 is configured by the extending portion 341 and the groove portion 342 formed in the ribbon shaft 310.

[effect]
The printer 100 according to the embodiment of the present invention includes a mounting / dismounting mechanism 320 provided on one end 311 side of the ribbon shaft 310 for mounting or dismounting the end 311 and the other end 312 side of the ribbon shaft 310. And a holding mechanism 330 for holding the ribbon shaft 310 which has been released.

  Thereby, the ribbon shaft 310 detached from the mounting and demounting mechanism 320 is held by the holding mechanism 330 at the time of the replacement operation of the ink ribbon R by the user. Therefore, the ribbon shaft 310 does not fall, and the mounting and demounting operation of the ink ribbon R in the limited space of the printer 100 can be easily performed. Therefore, the workability of replacing the ink ribbon R can be improved.

  In the printer 100 according to the present embodiment, in the holding mechanism 330, the extending portion 341 is formed so as to enter the groove portion 342 formed in the ribbon shaft 310, and is rotatably fitted.

  Therefore, when one end 311 of the ribbon shaft 310 is detached from the first notch portion 321, the ribbon shaft 310 is inclined to the printing operation position by the weight of the ribbon shaft 310. At this time, the extension portion 341 abuts on the inner wall of the groove portion 342 formed in the ribbon shaft 310, and is held by the holding mechanism 330.

  Therefore, when the ribbon shaft 310 is removed from the attaching / detaching mechanism 320 at the ribbon replacing position of the partition member 35, the ribbon shaft 310 does not immediately come out of the attaching / detaching mechanism 320 and falls.

  Furthermore, since the portion holding the ribbon shaft 310 is formed in a C shape by the second notch portion 323 and the second opening portion 324, the end portion 312 of the ribbon shaft 310 is naturally removed from the second notch portion 323. It can stay in the second cutout 323 until it is removed by the user without being detached.

  In the present embodiment, when the operation unit 332 is pushed by the user in the attaching / detaching mechanism 320, the end 311 of the ribbon shaft 310 is pushed toward the first opening 322. The first opening 322 is formed such that the outer diameter of the end 311 of the ribbon shaft 310 can pass through, but slightly smaller than the outer diameter of the end 311.

  Therefore, when the end portion 311 of the ribbon shaft 310 is pushed out by the extruding portion 331, the end portion 311 of the ribbon shaft 310 utilizes the elasticity of the material in which the first opening portion 322 is formed. The first opening 322 is passed while widening the gap.

  As a result, when the end 311 of the ribbon shaft 310 finishes passing through the first opening 322, the end 311 of the ribbon shaft 310 becomes the first opening due to the urging force that causes the distance between the first openings 322 to return. It is repelled from the portion 322 and pops out in the opening direction of the first opening 322.

  In this embodiment, in the present embodiment, as described above, since the ribbon shaft 310 is held by the holding mechanism 330 at the other end 312 of the ribbon shaft 310, the ribbon shaft 310 falls immediately. There is no

  That is, in the present embodiment, when the user presses the operation unit 332 when separating the ribbon shaft 310 from the printer 100, the end portion 311 of the ribbon shaft 310 jumps toward the user while the end portion 312 is the holding mechanism 330. Will be held by

  Thus, the user can remove the ribbon shaft 310 simply by pressing the operation unit 332, and can remove the spool shaft. Therefore, when replacing the spool shaft attached to the ribbon shaft 310, as in the prior art, one end of the spool shaft is moved in the direction to compress the coil spring and the other end is released from the spool shaft mounting portion After that, there is no need to pull out the spool shaft.

  As described above, according to the present embodiment, the workability of replacing the ink ribbon R in the printer 100 can be greatly improved.

Another Embodiment of Holding Mechanism
Next, another embodiment of the present invention will be described. FIG. 8 is a front view of a partition member 400 shown as another embodiment of the present invention.

  As shown in FIG. 8, the ribbon shaft 410 has one end 411 and the other end 412. The outer periphery 411 r of the end 411 is attached by the attachment / detachment mechanism 430.

  In the holding mechanism 440, a second notch 423 and a second opening 424 are formed at a position where the end 412 of the ribbon shaft 410 corresponds.

  Further, the outer periphery 412 r of the end portion 412 of the ribbon shaft 410 is provided with an extending portion 413 which is erected in a direction intersecting the axis. In addition, the ribbon shaft 410 includes a gear 414 for transmitting a driving force for rotating the ribbon shaft 410 on the axial direction outer side of the ribbon shaft 410 at the end portion 412 than the extension portion 413.

  In addition, a groove portion 415 for receiving the extension portion 413 of the ribbon shaft 410 is formed at an inner edge portion of the second notch portion 423.

  That is, in the present embodiment, the holding mechanism 440 is configured by the groove portion 415 formed in the second notch portion 423 and the extension portion 413 formed in the ribbon shaft 410.

  When the partition member 400 is used, the holding mechanism 440 is formed such that the extension portion 413 formed on the ribbon shaft 410 enters the groove portion 415.

  Therefore, when one end 411 of the ribbon shaft 410 is removed from the first notch 321, the ribbon shaft 410 is inclined from the printing operation position by the weight of the ribbon shaft 410.

  As a result, the extension 413 formed on the ribbon shaft 410 abuts on the inner wall of the groove 415, and the ribbon shaft 410 is held.

  Therefore, even when the ribbon shaft 410 is detached from the mounting and demounting mechanism 320 at the ribbon replacing position, the ribbon shaft 410 does not immediately detach from the printer 100 and drop.

  Therefore, the user can easily perform the attaching / detaching operation of the ink ribbon R in the limited space of the printer 100. Thereby, the exchange workability of the ink ribbon R can be improved.

Other Embodiments
As mentioned above, although embodiment of this invention was described, the said embodiment is only what showed one of the application examples of this invention, and the meaning which limits the technical scope of this invention to the specific structure of the said embodiment is not.

  The structure including the extrusion part 331 and the operation part 332 which extrude the ribbon shaft 310 is not limited to the illustrated structure. It is applicable if it is the structure which can remove ribbon axis 310.

  In addition, the ink ribbon R of the present embodiment may be a back-wound link ribbon whose inner surface is the surface on which the ink is applied.

DESCRIPTION OF SYMBOLS 10 housing 11 cover 11a engaged part 12 medium supply shaft 13 support shaft 14 lever 15 printing part 16 discharge port 17 cutter 19 operation unit 20 platen roller 21 reflection sensor 22 transmission sensor 22a light emitting unit 22b light receiving unit 30 printing unit 31 main body Part 32 Thermal head 33 Ribbon supply shaft 34 Ribbon take-up shaft 35 Partition member 35a Base part 35b Shaft part 35c Support part 35e Engaging part 36 Guide shaft 37 Guide shaft 40 Controller 100 Printer 310 Ribbon shaft 311 End 311r Outer circumference 312 End 312r outer periphery 314 gear 320 attachment / detachment mechanism 321 first cutout 322 first opening 323 second cutout 324 second opening 330 holding mechanism 331 extrusion part 332 operation part 341 extension part 342 groove part 400 partition member 10 ribbon shaft 411 ends 411r periphery 412 ends 412r periphery 413 extending portion 414 gear 415 groove 423 second notch 424 the second opening 430 detaching mechanism 440 holding mechanism

Claims (5)

A printer for printing on a print medium using an ink ribbon, comprising:
A ribbon shaft for removably attaching the ink ribbon to the printer;
An attachment / detachment mechanism for shifting to a state where one end side of the ribbon shaft is attached to the printer or a state where it can be detached from the printer;
The other end side of the ribbon shaft is held in a state in which the other end side of the ribbon shaft is held and the one end side of the ribbon shaft is mounted in the attaching / detaching mechanism and in a removable state. A holding mechanism that engages with the printer and
With a printer. The printer according to claim 1, wherein
The holding mechanism is
A notch formed to abut the outer periphery of the other end of the ribbon shaft;
And an opening formed in the notch so as to allow the outer periphery of the ribbon shaft to pass therethrough,
An extending portion extending toward the opening center of the notch at a position where the outer periphery of the ribbon shaft in the notch abuts;
A groove formed on the other end of the ribbon shaft and rotatably engaged with the extension;
Have a printer. The printer according to claim 2, wherein
The printer, wherein the ribbon axis has a gear for transmitting a driving force for rotating the ribbon axis to the outside in the axial direction of the ribbon axis than the groove. The printer according to claim 1, wherein
The holding mechanism is
A notch formed to abut the outer periphery of the other end of the ribbon shaft;
An opening formed in the notch so as to allow the outer periphery of the ribbon shaft to pass therethrough, and
An extension portion extending from the outer periphery on the other end side of the ribbon axis in a direction intersecting the ribbon axis;
A groove portion formed at a position where the outer periphery of the ribbon shaft in the cutout portion abuts and rotatably engaged with the extension portion;
Have a printer. The printer according to claim 4, wherein
The printer, wherein the ribbon axis has a gear for transmitting a driving force for rotating the ribbon axis to the outside in the axial direction of the ribbon axis than the extension.

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