printer

Abstract

To provide a printer whose movable blade can be easily cleaned.SOLUTION: A printer according one embodiment in the disclosure, which cuts a recording paper having printing performed thereon by a print head, using a stationary blade and a movable blade, has racks provided at both end parts in a longitudinal direction of the movable blade or a pushing-out component that pushes out the movable blade to expose a cutting part of the movable blade, where the pushing-out component is configured to enable the cutting part being exposed to be positionally fixed.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to printers. [Background technology]

[0002] Printers are widely used in applications such as ATMs (Automated Teller Machines), ticket vending machines, kiosk terminals, etc. Some printers use a print head to print on recording paper and then cut the recording paper with a cutter.

[0003] Some printers have a printer body and a lid that is rotatably supported on the body, and by opening the lid, a roll of recording paper can be placed on the body. In this case, for example, the thermal head is installed on the body and the platen roller is installed on the lid, and by closing the lid, the recording paper is sandwiched between the thermal head and the platen roller, and the thermal head prints on the recording paper.

[0004] Some cutters provided in such printers have a movable blade and a fixed blade, and cut the recording paper between the movable blade and the fixed blade by moving the movable blade toward the fixed blade. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-237555 [Patent Document 2] Japanese Patent Application Laid-Open No. 2006-312321 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the cutter may become dirty as it repeatedly cuts recording paper. Since it cannot cut recording paper in this state, the cutter needs to be cleaned periodically. However, cleaning the movable blade that constitutes the cutter is not easy. The movable blade is first exposed by turning the drive gear that rotates the movable blade with a finger or the like, and then the drive gear is continuously pressed with a finger or the like to keep the movable blade exposed.

[0007] For this reason, there is a demand for a printer in which the movable blade can be easily cleaned. [Means for solving the problem]

[0008] A printer according to one aspect of the present disclosure includes a fixed blade and a motor. A pinion that rotates in response to the rotation of the Moving rack and moves integrally with the rack. movable blade a movable blade unit including The printer has a fixed blade and a movable blade, and cuts recording paper on which printing has been performed by a print head, and has a push-out part that pushes out the rack or the movable blade to expose the blade portion of the movable blade, and the push-out part is configured to be fixed in position with the blade portion exposed. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a printer in which the movable blade can be easily cleaned. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a cross-sectional view of a printer according to an embodiment of the present invention; [Figure 2] Perspective view of the printer with the lid open [Figure 3] Perspective view of the printer with the lid closed [Figure 4] Plan view of the extrusion mechanism of the first embodiment (1) [Figure 5] Plan view of the extrusion mechanism of the first embodiment (2) [Figure 6] Plan view of the extrusion mechanism of the first embodiment (3) [Figure 7]A perspective view of the extrusion mechanism of the first embodiment (1) [Figure 8] A perspective view of the extrusion mechanism of the first embodiment (2) [Figure 9] Cross-sectional view of the extrusion mechanism of the first embodiment (1) [Figure 10] Cross-sectional view of the extrusion mechanism of the first embodiment (2) [Figure 11] Plan view of the movable blade in the first form [Figure 12] Plan view of the extrusion mechanism of the second embodiment (1) [Figure 13] Plan view of the extrusion mechanism of the second embodiment (2) [Figure 14] 10 is a perspective view of a second embodiment of the extrusion mechanism; [Figure 15] Plan view of the extrusion mechanism of the third embodiment (1) [Figure 16] Plan view of the extrusion mechanism of the third embodiment (2) [Figure 17] A perspective view of the extrusion mechanism of the third embodiment (1) [Figure 18] A perspective view of the extrusion mechanism of the third embodiment (2) [Figure 19] Plan view of the movable blade in the third form [Figure 20] Plan view of the extrusion mechanism of the fourth embodiment (1) [Figure 21] Plan view of the extrusion mechanism of the fourth embodiment (2) [Figure 22] A perspective view of the extrusion mechanism of the fourth embodiment (1) [Figure 23] A perspective view of the extrusion mechanism of the fourth embodiment (2) [Figure 24A] Cross-sectional view of the extrusion mechanism of the fourth embodiment (1) [Figure 24B] Cross-sectional view of the extrusion mechanism of the fourth embodiment (2) [Figure 25A] Cross-sectional view of the extrusion mechanism of the fourth embodiment (3) [Figure 25B] Cross-sectional view of the extrusion mechanism of the fourth embodiment (4) [Figure 26] Plan view of the movable blade in the fourth form [Figure 27] Plan view of the extrusion mechanism of the fifth embodiment (1) [Figure 28] Plan view of the extrusion mechanism of the fifth embodiment (2) [Figure 29]Cross-sectional view of the extrusion mechanism of the fifth embodiment (1) [Figure 30] Cross-sectional view of the fifth form of extrusion mechanism (2) DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, non-limiting exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings. In all the accompanying drawings, the same or corresponding reference numerals are used to designate the same or corresponding members or components, and redundant descriptions will be omitted.

[0012] In the following drawings, when directions are indicated by the X, Y, and Z axes, the X direction along the X axis indicates the longitudinal direction of the movable blade of the printer of this embodiment, the Y direction along the Y axis indicates the lateral direction along the surface of the movable blade, and the Z direction along the Z axis indicates the direction perpendicular to both the X and Y axes.

[0013] The direction in which the arrow points in the X direction is written as the +X direction / side, and the direction opposite to the +X direction is written as the -X direction / side. The direction in which the arrow points in the Y direction is written as the +Y direction / side and the direction opposite to the +Y direction is written as the -Y direction / side. The direction in which the arrow points in the Z direction is written as the +Z direction / side and the direction opposite to the +Z direction is written as the -Z direction / side.

[0014] [Printer] An example of a printer according to the present embodiment will be described with reference to Figures 1 to 3. Figure 1 is a cross-sectional view of the printer according to the present embodiment. Figure 2 is a perspective view of the printer with the lid open, and Figure 3 is a perspective view of the printer with the lid closed.

[0015] The printer of this embodiment is a clamshell type printer, and includes a main body 10 and a lid 20. The main body 10 is formed with a recording paper holder 11 having a space for placing a roll of recording paper P. The lid 20 is an example of a housing. The lid 20 is connected to the main body 10 at one end 20a in an openable and closable manner. The lid 20 is connected to the main body 10 by a rotating shaft 21 provided near the end 20a, and the lid 20 can be opened and closed by rotating it around the rotating shaft 21.

[0016] In this embodiment, a paper feed shaft 12 that supports a roll of recording paper P is installed inside the recording paper holder 11, and the lid 20 is closed as shown in Fig. 3. This makes it possible to print on the recording paper P. Note that Fig. 1 shows a state in which the recording paper P is supported by the paper feed shaft 12, while Fig. 2 shows a state in which the recording paper P is not supported by the paper feed shaft 12.

[0017] In this embodiment, a thermal head 30 serving as a print head is installed in the main body 10, and a platen roller 40 is installed in the lid 20. A fixed blade unit 50 including a fixed blade 51 is attached to the main body 10, and a movable blade unit 60 including a movable blade 61 is detachably attached to the lid 20. A conveyance motor 52 that rotates the platen roller 40 to convey the recording paper P, and a movable blade motor 53 that drives the movable blade 61 are installed in the main body 10. The platen roller 40 and movable blade 61 are installed near the other end 20b of the lid 20.

[0018] In this embodiment, when the lid 20 is closed, the recording paper P is sandwiched between the thermal head 30 and the platen roller 40, and the recording paper P is sandwiched between the fixed blade 51 and the movable blade 61. By closing the lid 20 in this manner, the fixed blade 51 and the movable blade 61 are positioned in a predetermined position to form a cutter, enabling printing on and cutting of the recording paper P. A control board 13 for controlling the printer of this embodiment is installed on the outside of the main body 10.

[0019] [Extrusion mechanism] (1st form) A first embodiment of the extrusion mechanism of this embodiment will be described with reference to FIGS. 4 to 11. FIG. 4 is a plan view of the printer in a state where the blade portion of the movable blade is not exposed, and FIG. 5 is a plan view of the printer in a state where the blade portion of the movable blade is exposed. FIG. 6 is a plan view illustrating a guide groove. FIG. 7 is a perspective view of the printer in a state where the blade portion of the movable blade is not exposed, and FIG. 8 is a perspective view of the printer in a state where the blade portion of the movable blade is exposed. FIG. 9 is a cross-sectional view taken along line 4A-4A in FIG. 4 of a printer including a guide groove in a state where the blade portion of the movable blade is not exposed. FIG. 10 is a cross-sectional view taken along line 5A-5A in FIG. 5 of a printer including a pressing unit in a state where the blade portion of the movable blade is exposed. FIG. 11 is a plan view of the movable blade attached to a rack.

[0020] The movable blade unit 60 includes a movable blade 61 , a rack 62 , a pinion 63 , a gear train 64 , a frame 65 , and a platen roller 40 .

[0021] The movable blade 61 is made of a material such as metal. The movable blade 61 has a V-shaped blade portion 61a and a tip portion 61b located on the opposite side of the blade portion 61a (FIG. 11). A rack 62 is attached to each of both longitudinal ends of the movable blade 61 (FIG. 11).

[0022] The rack 62 is connected to a pinion 63. The pinion 63 is connected to a gear train 64. The gear train 64 includes a plurality of gears, and is connected to a gear on the motor 53 side when the lid 20 is closed. The pinion 63 moves the rack 62 in the Y direction in conjunction with the rotation of the gear train 64. A frame 65 axially supports the pinion 63 and the gear train 64.

[0023] When the lid 20 is closed, the rotation of the motor 53 is transmitted to the pinion 63 via the gear train 64, causing the pinion 63 to rotate. This rotation is then transmitted to the rack 62, causing the movable blade 61 to move linearly in the Y direction together with the rack 62. This allows the movable blade 61 to move in the +Y direction to cut the recording paper P. On the other hand, when the lid 20 is opened, the gear on the motor 53 side and the gear train 64 are disconnected. The movable blade 61 is biased in the -Y direction by an elastic body such as a spring (not shown), and by disconnecting the gear on the motor 53 side and the gear train 64, the biasing force of the spring causes the movable blade 61 to be housed in the movable blade unit 60, and the blade portion 61a is not exposed.

[0024] The pushing mechanism 110 of the first embodiment includes a pushing part 111 , an operating lever 112 , and a coil spring 113 .

[0025] The pushing part 111 pushes out the rack 62, thereby moving the movable blade 61 integrally with the rack 62 in the +Y direction and exposing the blade portion 61a. In this embodiment, the pushing part 111 includes a contact portion 111a, a pressing portion 111b, and a guide portion 111c.

[0026] The contact portion 111a has a rectangular plate shape with the X direction as the longitudinal direction, the Y direction as the thickness direction, and the Z direction as the lateral direction.

[0027] Pressing portion 111b has a rectangular plate shape extending in the +Y direction from the +Y side surface of contact portion 111a, and is configured so that its tip end on the +Y side can come into contact with the -Y side end of rack 62. Pressing portion 111b is guided by guide groove 22 (FIG. 6) formed on the inner surface of lid 20.

[0028] Guide portion 111c has a rectangular plate shape extending in the +Y direction from the +Y side surface of contact portion 111a, and is guided by guide groove 23 (FIG. 6) formed on the inner surface of lid 20.

[0029] The operating lever 112 is provided on the inner surface of the lid 20 so as to be rotatable about the Z axis as a rotation axis. The operating lever 112 includes a handle portion 112a and a pressing portion 112b.

[0030] The handle portion 112a is provided on the upper part (+Z side) of the pressing portion 112b, and constitutes a portion for grasping the operating lever 112 with the fingers or palm (hereinafter referred to as "fingers, etc."). The shape of the handle portion 112a is not limited, but may be, for example, a rectangular plate shape with chamfered edges.

[0031] Pressing portion 112b is configured to rotate together with handle portion 112a and is located on the -Z side of handle portion 112a. The shape of pressing portion 112b is not limited, but for example, it is a rectangular plate whose longitudinal direction is the same as the longitudinal direction of handle portion 112a and whose lateral direction is the same as the lateral direction of handle portion 112a. Pressing portion 112b includes pressing surface 112b1, arcuate surface 112b2, and flat surface 112b3.

[0032] Pressing surface 112b1 is provided at the +Y side end of pressing portion 121b in Fig. 8. When the tip of handle portion 112a (the +Y side end in Fig. 8) is rotated clockwise from the -X side (the position shown in Fig. 7) toward the +Y side (the position shown in Fig. 8), pressing portion 112b rotates clockwise together with handle portion 112a, and in response to the clockwise rotation of pressing portion 112b, contact portion 111a is pushed out in the +Y direction by pressing surface 112b1. As a result, extrusion part 111 moves in the +Y direction while pressing portion 111b and guide portion 111c are guided by guide grooves 22 and 23, respectively.

[0033] The arcuate surface 112b2 is provided on the -X side of the -Y side end of the pressing portion 121b in FIG.

[0034] Flat surface 112b3 is provided on the +X side of the -Y side end of pressing portion 121b in Fig. 8. When the tip of handle portion 112a is rotated clockwise from the -X side toward the +Y side, flat surface 112b3 comes into contact with protrusion 20t on the inner surface of lid 20 at a position (position shown in Fig. 8) where handle portion 112a is rotated 90° or approximately 90° from the position shown in Fig. 7, and rotation of operating lever 112 is restricted.

[0035] The +Y side end of coil spring 113 is fixed to frame 65, and the -Y side end is fixed to the +Y side of contact portion 111a. Coil spring 113 biases push-out part 111 in the -Y direction. As a result, when the tip of handle portion 112a is rotated counterclockwise from the +Y side toward the -X side, the biasing force of coil spring 113 moves push-out part 111 in the -Y direction.

[0036] In the push-out mechanism 110, when the push-out part 111 moves in the +Y direction in response to clockwise rotation of the operating lever 112, the pressing part 111b comes into contact with the rack 62 and pushes the rack 62 in the +Y direction. As a result, the movable blade 61 moves in the +Y direction integrally with the rack 62, exposing the blade part 61a. Furthermore, when the operating lever 112 is rotated, the flat surface 112b3 comes into contact with the convex part 20t on the inner surface of the lid 20, restricting the rotation of the operating lever 112. As a result, the movement of the push-out part 111 in the -Y direction is restricted, and the position of the push-out part 111 is fixed.

[0037] As described above, in a printer having the push-out mechanism 110 of the first embodiment, the push-out part 111 moves in the +Y direction in response to rotation of the operation lever 112. The rack 62 is then pushed in the +Y direction by the push-out part 111 moving in the +Y direction, exposing the blade portion 61a. Therefore, a user can expose the blade portion 61a without touching the movable blade 61, the gear train 64, or the like with their fingers or using tools. Furthermore, because the push-out part 111 and the rack 62 are fixed in a rotated state of the operation lever 112, the blade portion 61a can be maintained in an exposed state. As a result, the movable blade 61 can be easily cleaned.

[0038] (2nd form) A second embodiment of the extrusion mechanism of this embodiment will be described with reference to Figures 12 to 14. Figure 12 is a plan view of the printer when the blade portion of the movable blade is not exposed, and Figure 13 is a plan view of the printer when the blade portion of the movable blade is exposed. Figure 14 is a perspective view of the printer when the blade portion of the movable blade is not exposed.

[0039] The second form of push-out mechanism 120 includes a push-out part 121, a paper feed shaft 12, and a coil spring 123. The paper feed shaft 12 is installed inside the recording paper holder 11 as shown in Figure 2, and is removed from the recording paper holder 11 in advance to operate the push-out part 121. Since the movable blade 61 is often cleaned when the recording paper P is consumed, there is no problem in removing the paper feed shaft 12 to clean the movable blade 61.

[0040] The pushing part 121 pushes out the rack 62, thereby moving the movable blade 61 integrally with the rack 62 in the +Y direction and exposing the blade portion 61a. In this embodiment, the pushing part 121 includes a holding part 121a, a pressing part 121b, and a guide part 121c. When the paper feed shaft 12 is fitted between the holding part 121a and a rib 20c formed on the inner surface of the lid 20, the holding part 121a is pressed by the paper feed shaft 12 and moves in the +Y direction. The pressing part 121b presses the rack 62 and has a rectangular plate shape extending in the +Y direction from the +Y side surface of the holding part 121a, and is configured so that its tip (the end on the +Y side) can come into contact with the end on the -Y side of the rack 62. Like the pressing part 111b, the pressing part 121b is guided by a guide groove (not shown) formed on the inner surface of the lid 20. Guide portion 121c has a rectangular plate shape extending in the +Y direction from the +Y side surface of holding portion 121a, and is guided by a guide groove (not shown) formed on the inner surface of lid 20, similar to guide portion 111c.

[0041] In the push-out mechanism 120, when the paper feed shaft 12 is fitted between the holding portion 121a and the rib 20c, the push-out part 121 pressed by the paper feed shaft 12 moves in the +Y direction. This pushes out the rack 62 in the +Y direction, and the movable blade 61 moves in the +Y direction together with the rack 62. Furthermore, with the paper feed shaft 12 fitted between the holding portion 121a and the rib 20c, movement of the push-out part 121 in the -Y direction is restricted, and the position of the push-out part 121 is fixed.

[0042] As described above, in a printer having the second type of push-out mechanism 120, the feed shaft 12 is fitted between the holder 121a and the rib 20c, causing the push-out element 121 to move in the +Y direction. The moving push-out element 121 then pushes the rack 62 in the +Y direction, exposing the blade 61a. Therefore, a user can expose the blade 61a without touching the movable blade 61, the gear train 64, or the like with their fingers or using tools. Furthermore, because the push-out element 121 and the rack 62 are fixed when the feed shaft 12 is fitted between the holder 121a and the rib 20c, the blade 61a can be kept exposed. As a result, the movable blade 61 can be easily cleaned.

[0043] (3rd form) A third embodiment of the extrusion mechanism of this embodiment will be described with reference to Figures 15 to 19. Figure 15 is a plan view of the printer when the blade portion of the movable blade is not exposed, and Figure 16 is a plan view of the printer when the blade portion of the movable blade is exposed. Figure 17 is a perspective view of the printer when the blade portion of the movable blade is not exposed, and Figure 18 is a perspective view of the printer when the blade portion of the movable blade is exposed. Figure 19 is a plan view of the movable blade.

[0044] In the third mode, movable blade 61 has V-shaped blade portion 61a, tip portion 61b located on the opposite side of blade portion 61a, and protrusion 61c protruding from tip portion 61b in the -Y direction (FIG. 19). Protrusion 61c has an inclined surface that slopes toward the -Y side from the -X side to the +X side.

[0045] The pushing mechanism 130 of the third embodiment includes a pushing part 131 and a guide rail 132 .

[0046] The pushing part 131 is configured to move in the +X direction to push out the movable blade 61. In this embodiment, the pushing part 131 includes a handle part 131a, a pressing part 131b, and a guide part 131c.

[0047] The handle portion 131a is provided on the upper portion (+Z side) of the guide portion 131c, and is configured so that it can be grasped with fingers or the like in order to move the push-out part 131 in the X direction.

[0048] The pressing portion 131b is provided on the +Y side of the guide portion 131c. The pressing portion 131b has an inclined surface that is inclined toward the -Y side from the -X side to the +X side and engages with the inclined surface of the protrusion 61c.

[0049] Guide portion 131c constitutes a portion that is guided by guide rail 132 formed on the inner surface of lid 20 along the X direction. Guide portion 131c is formed with recesses 131d that engage with protrusions 20e, 20f provided on rib 20d formed on the inner surface of lid 20. When guide portion 131c is positioned at the -X side end, protrusion 20e engages with recess 131d, thereby fixing the position. On the other hand, when guide portion 131c is positioned at the +X side end, protrusion 20f engages with recess 131d, thereby fixing the position.

[0050] The guide rail 132 is attached to the rib 20d and extends in the X direction. The guide rail 132 guides the movement of the guide portion 131c in the X direction.

[0051] In the push-out mechanism 130, when the push-out part 131 moves in the +X direction in response to movement of the handle part 131a in the +X direction, the pressing part 131b comes into contact with and presses the protrusion 61c, pushing the movable blade 61 in the +Y direction. This exposes the blade part 61a. Furthermore, when the push-out part 131 is moved to the right end, the protrusion 20f and the recess 131d engage, fixing the position of the push-out part 131.

[0052] As described above, in a printer having the third embodiment of the pushing mechanism 130, the movable blade 61 is pushed in the +Y direction in response to movement of the pushing part 131 in the +X direction, thereby exposing the blade portion 61a. Therefore, a user can expose the blade portion 61a without touching the movable blade 61, the gear train 64, or the like with their fingers or using tools. Furthermore, when the pushing part 131 is moved to the right end, the protrusion 20f and the recess 131d engage, fixing the position of the pushing part 131, thereby maintaining the exposed state of the blade portion 61a. As a result, the movable blade 61 can be easily cleaned.

[0053] (4th form) A fourth embodiment of the extrusion mechanism of this embodiment will be described with reference to FIGS. 20 to 26. FIG. 20 is a plan view of the printer when the blade portion of the movable blade is not exposed, and FIG. 21 is a plan view of the printer when the blade portion of the movable blade is exposed. FIG. 22 is a perspective view of the printer when the blade portion of the movable blade is not exposed, and FIG. 23 is a perspective view of the printer when the blade portion of the movable blade is exposed. FIGS. 24A and 24B are cross-sectional views of the printer when the blade portion of the movable blade is not exposed, with FIG. 24A being a cross-sectional view taken along line 20A-20A in FIG. 20, and FIG. 24(b) being a cross-sectional view taken along line 20B-20B in FIG. 20. FIGS. 25A and 25B are cross-sectional views of the printer when the blade portion of the movable blade is exposed, with FIG. 25A being a cross-sectional view taken along line 21A-21A in FIG. 21, and FIG. 25B being a cross-sectional view taken along line 21B-21B in FIG. 21. FIG. 26 is a plan view of the movable blade.

[0054] In the fourth configuration, the movable blade 61 has a V-shaped blade portion 61a, a tip portion 61b located on the opposite side of the blade portion 61a, and a protrusion 61d protruding from the tip portion 61b in the -Y direction (FIG. 26). The shape of the protrusion 61d is, for example, a rectangular plate shape protruding in the -Y side at the center of the movable blade 61 in the longitudinal direction.

[0055] The fourth embodiment of the pushing mechanism 140 includes a pushing part 141 .

[0056] The pushing part 141 is configured to rotate about the X-axis as a rotation axis to push out the movable blade 61. In this embodiment, the pushing part 141 includes a handle part 141a, a pressing part 141b, and a shaft part 141c.

[0057] The handle portion 141a constitutes a portion for grasping the extrusion part 141 with fingers or the like. The shape of the handle portion 141a is not limited, but for example, it is L-shaped, and in Figures 25A and 25B, the X direction is the longitudinal direction and the Z direction is the lateral direction of the rectangular plate, and the handle portion 141a is bent from the -Z side end to the -Y side and connected to one end of the pressing portion 141b.

[0058] The pressing portion 141b is flat, and has a handle 141a on one side (-Y side in Figs. 25A and 25B) of one end (+Z side end in Figs. 25A and 25B), and a shaft 141c connected to the other end (-Z side end in Figs. 25A and 25B). The pressing portion 141b comes into contact with the protrusion 61d of the movable blade 61 to push the movable blade 61 in the +Y direction.

[0059] Shaft 141c is a rod-shaped portion extending in the X direction and configured to be rotatable about the X axis. Shaft 141c is formed in a polygonal shape with flat portions 141d to 141g on the outer periphery at both ends in the longitudinal direction, and acts as a cam. When not performing a lifting operation, flat portion 141f of shaft 141c contacts the inner surface of lid 20, and flat portion 141g contacts frame 65, thereby preventing rotation.

[0060] In push-out mechanism 140, when handle portion 141a is lifted from lid 20, pressing portion 141b rotates around shaft portion 141c as a rotation center, and pressing portion 141b comes into contact with protrusion 61c and pushes movable blade 61 in the +Y direction. This causes movable blade 61 to move in the +Y direction and expose blade portion 61a. Furthermore, when handle portion 141a is lifted, flat portion 141d comes into contact with the inner surface of lid 20, and flat portion 141e comes into contact with frame 65, restricting the rotation of push-out part 141 and fixing the position of movable blade 61.

[0061] As described above, in a printer having the push-out mechanism 140 of the fourth embodiment, the pressing portion 151b rotates in response to the lifting action of the handle portion 141a. The rotating pressing portion 151b then pushes the movable blade 61 in the +Y direction, exposing the blade portion 61a. This allows the user to expose the blade portion 61a without touching the movable blade 61, the gear train 64, or the like with their fingers or using tools. Furthermore, because the movable blade 61 is fixed when the handle portion 141a is lifted, the blade portion 61a can be maintained in an exposed state. As a result, the movable blade 61 can be easily cleaned.

[0062] (5th form) A fifth embodiment of the extrusion mechanism of this embodiment will be described with reference to Figures 27 to 30. Figure 27 is a plan view of the printer when the blade portion of the movable blade is not exposed, and Figure 28 is a plan view of the printer when the blade portion of the movable blade is exposed. Figure 29 is a cross-sectional view taken along 27A-27A in Figure 27 of the printer when the blade portion of the movable blade is not exposed. Figure 30 is a cross-sectional view taken along 28A-28A in Figure 28 of the printer when the blade portion of the movable blade is exposed.

[0063] The fifth embodiment of the extrusion mechanism 150 includes an extrusion part 151 .

[0064] The pushing part 151 is configured to rotate about the Z axis as a rotation axis to push out the movable blade 61. The pushing part 151 of this embodiment includes a handle part 151a and a pressing part 151b.

[0065] The handle portion 151a is rotatably provided on the inner surface of the lid 20, and constitutes a portion for grasping the ejection part 151 with fingers or the like.

[0066] The pressing portion 151b is provided on the inner surface of the lid 20 so as to be rotatable together with the handle portion 151a. A recess 151c that engages with a protrusion 20g formed on the inner surface of the lid 20 is formed on the -Z side of the pressing portion 151b. When the handle portion 151a is in a position before rotation, the protrusion 20g engages with the recess 151c, fixing the position of the extrusion part 151. The shape of the pressing portion 151b is not limited, but may be, for example, a rectangular plate whose longitudinal direction is the short side direction of the handle portion 151a and whose short side direction is the long side direction of the handle portion 151a. The pressing portion 151b includes a pressing surface 151b1, an arcuate surface 151b2, and a flat surface 151b3.

[0067] Pressing surface 151b1 is provided at the +Y side end of pressing portion 151b in Fig. 28. When the tip of handle portion 151a (the -Y side end in Fig. 28) is rotated clockwise from the -Y side (the position shown in Fig. 27) toward the -X side (the position shown in Fig. 28), pressing portion 151b rotates clockwise together with handle portion 151a, and in response to the clockwise rotation of pressing portion 151b, tip portion 61b of movable blade 61 is pushed in the +Y direction by pressing surface 151b1.

[0068] The arcuate surface 151b2 is provided on the -X side of the -Y side end of the pressing portion 151b in FIG.

[0069] Flat surface 151b3 is provided on the +X side of the -Y side end of pressing portion 151b in Fig. 28. When the tip of handle portion 151a is rotated clockwise from the -Y side toward the -X side, flat surface 151b3 comes into contact with protrusion 20u on the inner surface of lid 20 at a position (position shown in Fig. 28) where pressing portion 151b is rotated 90° or approximately 90° from the position shown in Fig. 27, and rotation of extrusion part 151 is restricted.

[0070] In the push-out mechanism 150, when the pressing portion 151b rotates in response to the rotation of the handle portion 151a, the pressing portion 151b comes into contact with the tip portion 61b of the movable blade 61 and pushes the movable blade 61 in the +Y direction. This causes the movable blade 61 to move in the +Y direction and expose the blade portion 61a. Furthermore, when the handle portion 151a is rotated, the flat surface 151b3 comes into contact with the protrusion 20u on the inner surface of the lid 20, restricting the rotation of the push-out part 151. As a result, the movement of the movable blade 61 in the -Y direction is restricted and the position of the movable blade 61 is fixed.

[0071] As described above, in a printer having the push-out mechanism 150 of the fifth embodiment, the pressing portion 151b rotates in response to the rotation of the handle portion 151a. The rotating pressing portion 151b then pushes the movable blade 61 in the +Y direction, exposing the blade portion 61a. This allows a user to expose the blade portion 61a without touching the movable blade 61, the gear train 64, or the like with their fingers or using tools. Furthermore, because the movable blade 61 is fixed in a state in which the handle portion 151a is rotated, the blade portion 61a can be maintained in an exposed state. As a result, the movable blade 61 can be easily cleaned.

[0072] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive, and the above-described embodiments may be omitted, substituted, or modified in various ways without departing from the scope and spirit of the appended claims. [Explanation of symbols]

[0073] 51 fixed blade, 61 movable blade, 62 rack, 111 extrusion part, P recording paper

Claims

1. A fixed blade and a movable blade unit including a pinion that rotates in response to rotation of a motor, a rack that moves in response to rotation of the pinion, and a movable blade that moves integrally with the rack; A printer that cuts recording paper on which printing has been performed by a print head using the fixed blade and the movable blade, a push-out part that pushes out the rack or the movable blade to expose the blade portion of the movable blade, The extrusion part is configured to be fixed in position with the blade portion exposed. Printer.

2. The racks are provided at both longitudinal ends of the movable blade, a housing in which the movable blade unit having the movable blade is disposed; an operating lever rotatably provided on the inner surface of the housing; The pushing part is configured to push out the rack in response to rotation of the operating lever. The printer of claim 1 .

3. The operating lever has a flat surface, The push-out part is pushed out by rotating the operating lever, and the flat surface comes into contact with the inner surface of the housing, thereby fixing the position. The printer of claim 2 .

4. The racks are provided at both longitudinal ends of the movable blade, a housing in which the movable blade unit having the movable blade is disposed; a detachable paper feed shaft that supports the recording paper; and the ejection part is configured to push out the rack by fitting the removed paper feed shaft into the housing. The printer of claim 1 .

5. The racks are provided at both longitudinal ends of the movable blade, The movable blade has a protrusion with an inclined surface, the pushing part has a pressing part with an inclined surface that engages with the inclined surface of the convex part, The pushing part is configured to push out the movable blade by moving in the longitudinal direction of the movable blade along a guide rail provided on the inner surface of a housing in which the movable blade unit having the movable blade is arranged. The printer of claim 1 .

6. The racks are provided at both longitudinal ends of the movable blade, a housing in which the movable blade unit having the movable blade is disposed, the pushing part includes a flat pressing part that is rotatably disposed on the inner surface of the housing with the longitudinal direction of the movable blade as a rotation axis, The movable blade is configured to be pushed out in response to the lifting action of the pushing part. The printer of claim 1 .

7. a flat portion is provided on an outer peripheral surface of an end of the rotation shaft, and the flat portion comes into contact with an inner surface of the housing as the extrusion part is lifted, thereby fixing the position; The printer of claim 6.

8. The pushing part has a rotatably provided pressing part, and is configured to push out the movable blade in response to rotation of the pressing part. The printer of claim 1 .

9. a housing in which the movable blade unit having the movable blade is disposed, The extrusion part has a recess for fixing the position, and the position is fixed by engaging with a protrusion provided on the inner surface of the housing.

9. The printer according to claim 5 or 8.

Images