Printer device and movable blade unit

Abstract

To provide a printer having a cutter and allowing easy exchange of a movable blade or the like.SOLUTION: A printer which cuts a recording sheet to which printing is performed by a print head, by a stationary blade and a movable blade, comprises a movable blade unit including a slider to which the movable blade is fitted. The slider comprises: a contact part coming into contact with the movable blade; a flexible part which is formed thinner than the contact part; and a first protrusion provided on the flexible part. The movable blade has a first opening, and a second opening is engaged to the first protrusion.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a printer device and a movable blade unit. [Background technology]

[0002] Printers that issue receipts and the like are widely used in applications such as cash registers in stores, ATMs (Automated Teller Machines) and CDs (Cash Dispensers) in banks, etc. Printers that issue such receipts print, etc., on thermal paper that serves as recording paper using a thermal head or the like while transporting the recording paper, and after transporting the recording paper to a predetermined length, cut the recording paper to the predetermined length with a cutter.

[0003] In such a printer device, for example, a printer body and a lid rotatably supported on the body are provided, and a roll of recording paper can be placed on the body by opening the lid. In this case, the thermal head is attached to the body and the platen roller is attached to the lid, and when the lid is closed, the recording paper is sandwiched between the thermal head and the platen roller. With the recording paper sandwiched between the thermal head and the platen roller in this manner, the thermal head prints on the recording paper.

[0004] The cutter installed in such a printer device cuts the recording paper using a movable blade and a fixed blade. When the recording paper is between the movable blade and the fixed blade, the movable blade moves to the side where the fixed blade is located, thereby cutting the recording paper. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2004-106489 A [Patent Document 2] JP 2004-090255 A [Patent Document 3] Patent No. 6293439 [Patent Document 4] Patent No. 5292114 Summary of the Invention [Problem to be solved by the invention]

[0006] The cutter may become damaged after repeatedly cutting the recording paper. In this state, the recording paper cannot be cut, so the cutter must be replaced periodically. However, it is not easy for the user to replace only the movable blade that constitutes the cutter, and it is done by a professional using special tools. The cutter also needs to be replaced when it wears out.

[0007] Therefore, there is a demand for a printer device having a cutter that allows easy replacement of the movable blade. [Means for solving the problem]

[0008] According to one aspect of this embodiment, a printer device that cuts recording paper printed by a print head using a fixed blade and a movable blade has a movable blade unit including a slider to which the movable blade is attached, the slider has a contact portion that contacts the movable blade, a flexible portion that is formed thinner than the contact portion, and a first protrusion provided on the flexible portion, the movable blade has a first opening, and the first opening of the movable blade engages with the first protrusion.

[0009] According to one aspect of this embodiment, a movable blade unit that can be attached to a printer device that cuts recording paper printed by a print head using a fixed blade and a movable blade has a slider to which the movable blade is attached, the slider has a contact portion that contacts the movable blade, a flexible portion that is formed thinner than the contact portion, and a first protrusion provided on the flexible portion, the movable blade has a first opening that engages with the first protrusion. Effect of the Invention

[0010] According to the present invention, in a printer device having a cutter, it becomes possible to easily replace the movable blade. [Brief description of the drawings]

[0011] [Figure 1] 1 is a cross-sectional view of a printer device according to an embodiment of the present invention; [Diagram 2] FIG. 1 is a perspective view of a printer device according to an embodiment of the present invention; [Diagram 3] 1 is an exploded view of a movable blade unit of a printer device according to an embodiment of the present invention; [Figure 4] FIG. 1 shows an example of a slider. [Diagram 5] FIG. 13 shows another example of a slider [Figure 6] FIG. 13 is a perspective view showing the movement of the movable blade and the slider when the movable blade is attached or detached. [Figure 7] A perspective view of the movable blade unit from the rear side. [Figure 8] Diagram showing the attachment of the movable blade to the slider [Figure 9] Illustration showing removal of movable blade from slider DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings, in which: FIG.

[0013] In the drawings shown below, when directions are indicated by the X-axis, Y-axis, and Z-axis, the X-direction along the X-axis indicates the longitudinal direction of the movable blade of the printer device according to this embodiment, the Y-direction along the Y-axis indicates the lateral direction of the movable blade, and the Z-direction along the Z-axis indicates the direction perpendicular to both the X-axis and the Y-axis.

[0014] The X direction is the +X direction, the opposite direction of the +X direction is the -X direction, the Y direction is the +Y direction, the opposite direction of the +Y direction is the -Y direction, the Z direction is the +Z direction, the opposite direction of the +Z direction is the -Z direction. The X direction corresponds to the left and right direction.

[0015] Fig. 1 is a cross-sectional view of a printer device in this embodiment, and Fig. 2 is a perspective view of the printer device in this embodiment. The printer device in this embodiment has a thermal head 10 (print head) that prints on recording paper P such as thermal paper, a platen roller 20 that transports the recording paper P, and a movable blade 31 and a fixed blade 41 that cut the recording paper P. In this embodiment, printing is performed on the recording paper P with the recording paper P sandwiched between the thermal head 10 and the platen roller 20.

[0016] The printer device in this embodiment has a printer main body (hereinafter referred to as "main body") 50 and a movable blade unit 70 that is detachable from the main body 50. The main body 50 is attached to a housing (not shown), and the movable blade unit 70 is detachably attached to a lid 60 that is rotatably attached to the housing. By opening the lid 60, the movable blade unit 70 is removed from the main body 50, and recording paper P can be placed between the main body 50 and the movable blade unit 70, and by closing the lid 60, the thermal head 10 is ready to print on the recording paper P. Note that FIG. 1 shows a state in which the lid 60 is closed, and FIG. 2 shows a state in which the movable blade unit 70 is removed from the main body 50.

[0017] In this embodiment, the thermal head 10 and the fixed blade 41 are mounted in a main body 50, and the platen roller 20, the movable blade 31 and the slider 32 are mounted in a movable blade unit .

[0018] In FIG. 1, the movable blade 31 and the fixed blade 41 constitute a cutter. The movable blade 31 moves in the -Y direction together with the slider 32 and passes over the fixed blade 41, thereby cutting the recording paper P.

[0019] The fixed blade 41 is placed on a spring portion 42 that biases the fixed blade 41 in the +Z direction.

[0020] The fixed blade 41 is pressed towards the movable blade 31 by a spring portion 42, and the recording paper P is cut when the movable blade 31 passes over the fixed blade 41. A recording paper guide 43 that forms the transport path and guides the recording paper is provided on the printing surface side upstream of the thermal head 10 in the transport path of the recording paper P, and a heat sink 11 that dissipates heat generated in the thermal head 10 is provided on the back of the thermal head 10.

[0021] (Movable blade unit 70) 3 is an exploded view of the movable blade unit of the printer device in this embodiment. The movable blade unit 70 has a movable blade 31, a slider 32, a frame 33, a platen roller 20, a reinforcing metal fitting 34, and a mounting plate 35.

[0022] The movable blade 31 is made of a material such as metal, and the blade portion of the movable blade 31 is formed in a V-shape. In addition, second openings 311 are provided near both ends of the movable blade 31, and first openings 312 are provided closer to the center than both ends.

[0023] The second opening 311 is a through hole having a substantially rectangular shape in a plan view, and the first opening 312 is a through hole having a substantially circular shape in a plan view. However, the shape of each opening is not limited to this, and both the second opening 311 and the first opening 312 may be through holes having a substantially circular or rectangular shape, or may be through holes having a substantially elliptical or elongated shape in a plan view.

[0024] A notch 313 is provided near the center of the movable blade 31 on the opposite side of the blade. By providing the notch 313, at least a portion of the movable blade 31 is formed asymmetrically.

[0025] In a printer device, in order to reduce the contact area between the movable blade 31 and the fixed blade 41 and improve the cutting power of the recording paper P, the movable blade 31 and the fixed blade 41 may each be slightly warped in the longitudinal direction so that their convex sides face each other. For this reason, if the front and back of the movable blade 31 are incorrectly assembled when assembling the movable blade 31 to the slider 32, there is a concern that the convex sides of the movable blade 31 and the fixed blade 41 will not face each other, reducing the cutting power of the cutter. By forming at least a portion of the movable blade 31 asymmetrically, it is possible to prevent the front and back of the movable blade 31 from being incorrectly assembled to the slider 32, and to prevent a reduction in the cutting power of the cutter.

[0026] The slider 32 is made of a resin material or the like. A rack 320 is provided on each of the left and right sides of the -Z side of the slider 32, and can be connected to a pinion (not shown) that is connected via a gear or the like to a motor for driving the movable blade. By rotating the motor, the pinion (not shown) rotates, and this rotation is transmitted to the rack 320, allowing the slider 32 to move in the Y direction.

[0027] The movable blade 31 is attached to a slider 32, and the movable blade 31 can be moved by moving the slider 32. The movable blade 31 and the slider 32 are attached to the +Z side of a frame 33 so that the movable blade 31 is sandwiched between the slider 32 and the frame 33. A metal fitting 34 and a mounting plate 35 are provided to cover the movable blade 31 and the slider 32. The metal fitting 34 and the mounting plate 35 are made of a material such as metal. The platen roller 20 is rotatably attached to the frame 33. Note that the metal fitting 34 is not shown in FIG. 2 described above.

[0028] (Slider 32) Next, the slider 32 will be described. Figure 4 shows an example of the slider 32, where Figure 4(a) is a perspective view from the -Z side, Figure 4(b) is a partially enlarged view of region A in Figure 4(a), and Figure 4(c) is a cross-sectional view along the line BB in Figure 4(a).

[0029] As shown in FIG. 4, the slider 32 is provided with a second protrusion 321, a hole portion 322, a flexible portion 323, a first protrusion 324, a housing portion 325, and a guide portion 326.

[0030] The second protrusions 321 are provided near both ends of a surface on the -Z side corresponding to one surface of the slider 32, and are protrusions having a substantially rectangular shape in a plan view.

[0031] The second protrusion 321 is preferably formed in a substantially rectangular shape with the same length of long and short sides as the shape of the second opening 311 of the paired movable blade 31, or in a substantially rectangular shape with the lengths of long and short sides slightly smaller than those of the shape of the second opening 311 of the paired movable blade 31. In this way, the paired second protrusion 321 can be easily engaged with the second opening 311 when the movable blade 31 is attached to the slider 32. Alternatively, the second opening 311 can be easily removed from the paired second protrusion 321 when the movable blade 31 is removed from the slider 32.

[0032] 4(c), a first inclined portion 321a is formed on each of the second protrusions 321. The first inclined portion 321a is inclined at an inclination angle θ1 so that the -Y side is higher and the +Y side is lower.

[0033] The hole 322 is provided closer to the center than the ends on both sides of the slider 32. The hole 322 in Fig. 4 is a through hole provided so as not to come into contact with the movable blade 31. The hole 322 is provided with a flexible portion 323 consisting of a beam portion spanning the hole 322. A first protrusion 324 is provided on the -Z side surface of the flexible portion 323 corresponding to one surface of the slider 32. The first protrusion 324 is a protrusion that is approximately circular in plan view.

[0034] The first protrusions 324 are preferably formed in a substantially circular shape that is substantially the same as the shape of the paired first opening 312, or in a substantially circular shape with a slightly smaller diameter. With such a shape, the pair of second protrusions 321 can be easily engaged with the second openings 311 when the movable blade 31 is attached to the slider 32. Alternatively, the second openings 311 can be easily removed from the second protrusions 321 when the movable blade 31 is removed from the slider 32.

[0035] 4(c), a second inclined portion 324a is provided on the first protrusion 324. The second inclined portion 324a is inclined at an inclination angle θ2 so that the +Y side is higher and the -Y side is lower.

[0036] The contact portion 329 is a portion of the slider 32 with which the movable blade 31 comes into contact when the movable blade 31 is attached to the slider 32. The thickness t1 of the flexible portion 323 is formed to be thinner than the thickness t0 of the slider 32 at the contact portion 329, and is more flexible than the contact portion 329.

[0037] In order to ensure the mechanical strength of the flexible portion 323, it is preferable to make the thickness t1 of the flexible portion 323 thick. On the other hand, in order to ensure the flexibility of the flexible portion 323 required when attaching and detaching the movable blade 31 to and from the slider 32, it is preferable to make the thickness t1 thin. For example, when the thickness t0 of the contact portion 329 is 1.0 [mm], it is preferable to set the thickness t1 of the flexible portion 323 to, for example, 0.7 [mm] or more and 0.8 [mm] or less.

[0038] By configuring flexible portion 323 with a beam portion spanning hole portion 322, flexible portion 323 becomes more flexible. From the viewpoint of flexibility, the narrower the width of the beam portion, the easier it is to bend. For example, it is preferable to make the width of the beam portion approximately equal to the width of first protrusion 324 in the Y direction.

[0039] The accommodation portion 325 is provided in the vicinity of the outer side of each of the holes 322 so as to be capable of accommodating a part of the movable blade 31 installed on the -Z side of the slider 32. The accommodation portion 325 is formed in a box shape, and the inner wall in the X direction and the -Y side wall are each open.

[0040] The accommodation section 325 has an abutment surface 327 against which the surface of the movable blade 31 opposite to the surface facing the slider 32 can abut when the movable blade 31 is attached to the slider 32. The accommodation section 325 accommodates the movable blade 31 inside through a portion where the wall is opened, and the surface on the -Z side of the movable blade 31 can abut against the abutment surface 327.

[0041] The guide portion 326 is provided on the outer side of the storage portion 325 in the X direction, and is a long hole with the Y direction as the longitudinal direction. By inserting a protrusion 331 (see FIG. 7) provided on the frame 33 into the guide portion 326, the movement of the movable blade 31 and the slider 32 relative to the frame 33 in the Y direction can be guided.

[0042] 4 illustrates an example in which the flexible portion 323 is made of a beam portion spanning the hole portion 322 which is a through hole, but the present invention is not limited to this. Fig. 5 illustrates another example of the slider 32, in which Fig. 5(a) is a perspective view from the -Z side, Fig. 5(b) is a partially enlarged perspective view of region C in Fig. 5(a), and Fig. 5(c) is a cross-sectional view taken along the cutting line DD in Fig. 5(a).

[0043] 5, the slider 32 has recesses, which are an example of holes 322, formed on the +Z and -Z sides of the slider 32. The recesses are thinner than the contact parts 329, and these parts serve as flexible parts 328. By forming the recesses on both sides of the slider 32, it is possible to prevent the flexible parts 328 from contacting the movable blade 31.

[0044] (Attachment and detachment of movable blade 31 to slider 32) Next, the operation of attaching and detaching the movable blade 31 to the slider 32 in the movable blade unit 70 will be described with reference to Fig. 6 to Fig. 9. Fig. 6 is a perspective view showing the movement of the movable blade 31 and the slider 32 when attaching and detaching the movable blade 31 to and from the slider 32, Fig. 6(a) is a perspective view showing the state before the movement, and Fig. 6(b) is a perspective view showing the state after the movement. Fig. 7 is a perspective view from the rear side of the movable blade unit, showing the state with the metal fitting 34 and the mounting plate 35 removed.

[0045] 8A and 8B are diagrams showing the attachment of the movable blade 31 to the slider 32, with FIG. 8(a) showing the state during installation, FIG. 8(b) being a cross-sectional view along the EE cutting line in FIG. 8(a), FIG. 8(c) being a diagram showing the state after installation, and FIG. 8(d) being a cross-sectional view along the FF cutting line in FIG. 8(c).

[0046] Figure 9 shows the removal of the movable blade 31 from the slider 32, where Figure 9(a) shows the state during removal, Figure 9(b) is a cross-sectional view along the line GG in Figure 9(a), and Figure 9(c) shows the state when it is ready to be removed.

[0047] 6, a drive gear 36 for driving the movable blade is provided on the frame 33. The drive gear 36 is driven by a motor provided in the main body 50, and meshes with an intermediate gear (not shown) provided inside the movable blade unit 70, which in turn meshes with a rack 320 provided on the slider 32. The movable blade 31 and the slider 32 move in the -Y direction in conjunction with the rotation of the drive gear 36, thereby cutting the recording paper P.

[0048] When the drive gear 36 is rotated in the direction of the arrow 81 while the lid 60 is open, the movable blade 31 and the slider 32 move in the -Y direction via the intermediate gear. As a result, as shown in Fig. 6(b), the slider 32 protrudes from the movable blade unit 70 with the movable blade 31 attached, making the first protrusion 324 visible, and after the movable blade 31 and the slider 32 are stopped, the movable blade 31 can be attached to or detached from the slider 32.

[0049] As shown in Fig. 7, the frame 33 is provided with a protrusion 331. The protrusion 331 is inserted into the guide portion 326. By providing the guide portion 326, when the drive gear 36 is rotated to move the movable blade 31 and the slider 32, the movement of the movable blade 31 and the slider 32 in the Y direction can be smoothed and the range of movement can be limited. Also, in Fig. 7, a metal fitting 34 (see Fig. 3) is provided on the +Z side of the slider 32, so that the movable blade 31 and the slider 32 can be prevented from coming off the frame 33.

[0050] When attaching the movable blade 31 to the slider 32, as shown in Fig. 8(a), the movable blade 31 is disposed slightly on the -Y side of the slider 32, and the +Z side surface of the movable blade 31 faces the -Z side surface of the slider 32. In this state, as shown in Fig. 8(b), the first protrusion 324 is pressed by the +Z side surface of the movable blade 31, so that the flexible portion 323 is bent to the +Z side.

[0051] Thereafter, the movable blade 31 is moved in the +Y direction. When the first opening 312 reaches a position where it overlaps with the first protrusion 324 in a plan view, the flexible portion 323 is restored from the bent state, and the first opening 312 enters each of the paired first protrusions 324, as shown in FIG. 8(d). This causes the movable blade 31 to be fixed to the slider 32.

[0052] The second inclined portion 324a provided on the first protrusion 324 is inclined at an inclination angle θ2 so that the +Y side is higher, so that compared to a case where there is no inclination, the movable blade 31 can easily move in the +Y direction and the first opening 312 can easily enter the first protrusion 324. Furthermore, when the movable blade 31 is attached to the slider 32, the movable blade 31 can be reliably fixed.

[0053] After the first opening 312 reaches a position where the first opening 312 overlaps with the first protrusion 324 in a plan view due to the movement of the movable blade 31 in the +Y direction, the first protrusion 324 is inserted into the first opening 312. This makes it possible to easily position the movable blade 31 relative to the slider 32 in the X direction and the Y direction, i.e., in the in-plane direction of the movable blade 31.

[0054] After a part of the movable blade 31 reaches the position of the accommodation portion 325 by moving the movable blade 31 in the +Y direction, the part of the movable blade 31 is accommodated in the accommodation portion 325. At this time, the -Z side surface of the movable blade 31 abuts against the abutment surface 327, so that the movable blade 31 can be easily positioned with respect to the slider 32 in the Z direction, i.e., in the out-of-plane direction of the movable blade 31.

[0055] In other words, the first protrusion 324 entering the first opening 312 serves to position the movable blade 31 relative to the slider 32 in the XY plane, and the second protrusion 321 entering the second opening 311 serves as a stopper function that prevents the movable blade 31 from escaping when pressed by the paper as the movable blade 31 moves to cut the paper. Also, the accommodation of a part of the movable blade 31 in the accommodation portion 325 serves to position the movable blade 31 in the Z direction relative to the slider 32. In this way, the positioning function and the stopper function in each direction are shared by each configuration.

[0056] In this embodiment, one of the two first openings 312, the first opening 312 on the +X side, is an elongated hole with the X direction as the longitudinal direction. If both of the two first openings 312 are made into substantially circular openings, the two first protrusions 324 may not smoothly enter the paired first openings 312 due to manufacturing errors, etc., and this is to suppress this. However, it is not essential that one of the two first openings 312 is made into an elongated hole, and both may be formed into substantially circular shapes.

[0057] When removing the movable blade 31 from the slider 32, as shown in Figures 9(a) and 9(b), the first protrusion 324 engaged with the first opening 312 is pushed toward the +Z side, and the flexible portion 323 is bent in the pushed direction, causing the first protrusion 324 to come out of the first opening 312. This makes the movable blade 31 removable from the slider 32. In this state, the second protrusion 321 is removed from the second opening 311, and the movable blade 31 is moved toward the -Y side, whereby the movable blade 31 can be removed from the slider 32, as shown in Figure 9(c).

[0058] Since the first inclined portion 321a provided on the second protrusion 321 is inclined at an inclination angle θ1 so that the -Y side is higher, the movable blade 31 can move more easily in the -Y direction and the second protrusion 321 can more easily come out of the second opening 311 compared to a case where there is no inclination. Furthermore, when the movable blade 31 is attached to the slider 32, the movable blade 31 can be reliably fixed.

[0059] When the cover is closed, the movable blade 31 is pushed toward the slider 32 by the spring 42 which pushes the fixed blade 41 upward. Therefore, even if the movable blade 31 moves out of the movable blade unit, the second opening 311 does not come off the second protrusion 321, and the first opening 312 does not come off the first protrusion 324. Therefore, the recording paper P can be cut by the movable blade 31 and the fixed blade 41 without the movable blade 31 coming off.

[0060] As described above, in this embodiment, slider 32 has a contact portion 329 that contacts movable blade 31, a flexible portion 323 formed thinner than contact portion 329, and a first protrusion 324 provided on flexible portion 323, and movable blade 31 has a first opening 312, which engages with first protrusion 324.

[0061] This configuration allows the movable blade 31 to be reliably fixed to the slider 32, and also allows the first protrusion 324 to be easily engaged with the first opening 312. Furthermore, compared to a method of installing the movable blade on the slider by applying pressure to the opening to press the movable blade into the protrusion, or a method of fixing the movable blade and slider to a frame, this configuration allows the movable blade 31 to be easily attached to the slider 32. Also, the movable blade 31 can be easily removed from the slider 32. Therefore, in a printer device having a cutter, the user can easily replace the movable blade, etc.

[0062] The printer device according to this embodiment has a main body 50 and a lid 60 that is openably and closably connected to the main body 50. A fixed blade 41 is provided on the main body 50, and a movable blade unit 70 equipped with a movable blade 31 is provided on the lid 60. When the lid 60 is open, the movable blade 31 can be easily attached and detached from the slider 32.

[0063] In addition, in this embodiment, the slider 32 is provided with a flexible portion 323, and a first protrusion 324 is provided on the flexible portion 323. When the movable blade 31 is attached to or detached from the slider 32, the first protrusion 324 is pressed, causing the flexible portion 323 to bend locally.

[0064] If the slider is configured to bend as a whole when the movable blade is attached to or detached from the slider, the movable blade may bend in response to the slider bending, which may cause stress to be applied to the movable blade. However, by locally bending the slider using the flexible portion 323, it is possible to prevent the occurrence of such stress. In particular, in a configuration in which the movable blade is slightly warped to improve cutting power as described above, there is a concern that the warped state of the movable blade may change due to stress, and therefore the effect of the flexible portion 323 is more pronounced.

[0065] Moreover, the movable blade unit 70 also provides the same effects as those of the printer device described above.

[0066] Although the embodiment of the present invention has been described above, the above content does not limit the content of the invention. [Explanation of symbols]

[0067] 10 thermal head, 20 platen roller, 31 movable blade, 311 second opening, 312 first opening, 313 notch, 32 slider, 320 rack, 321 second protrusion, 321a first inclined part, 322 hole, 323, 328 flexible part, 324 first protrusion, 324a second inclined portion, 325 storage portion, 326 guide portion, 327 abutment surface, 329 contact part, 33 frame, 331 protrusion, 34 metal fitting, 35 mounting plate, 36 drive gear, 41 fixed blade, 42 spring portion, 43 recording paper guide, 50 Printer body, 60 Lid, 70 Movable blade unit

Claims

1. In a printer device, a fixed blade and a movable blade are used to cut a recording paper on which data has been printed by a print head, a movable blade unit including a slider to which the movable blade is attached; the slider has a contact portion that contacts the movable blade, a flexible portion that is thinner than the contact portion, and a first protrusion that is provided on the flexible portion, The movable blade has a first opening. a printer device, wherein the first opening of the movable blade is engaged with the first projection.

2. The slider has a hole.

2. The printer device according to claim 1, wherein the flexible portion is a beam portion that is bridged over the hole.

3. The movable blade further has a second opening provided outside the first opening, 3. The printer device according to claim 1, wherein the slider has a housing portion capable of housing a part of the movable blade attached to the slider, and a second protrusion that engages with the second opening.

4. The movable blade unit further includes a frame having a drive gear that drives the movable blade, The slider further includes a rack to which the rotation of the drive gear is transmitted, The slider is configured to protrude from the movable blade unit when the drive gear rotates, 4. The printer device according to claim 1, wherein the movable blade can be removed in a state in which the slider protrudes from the movable blade unit.

5. A movable blade unit that can be attached to and detached from a device that cuts with a fixed blade and a movable blade, A slider to which the movable blade is attached, the slider has a contact portion that contacts the movable blade, a flexible portion that is thinner than the contact portion, and a first protrusion that is provided on the flexible portion, The movable blade has a first opening. A movable blade unit, characterized in that the first opening is engaged with the first projection.

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