JP2004114302A - Printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a printer in which a movable cutter can be replaced readily and the position of a sheet being carried is stabilized. <P>SOLUTION: The printer for cutting a printed sheet, carried between the cutting part of a fixed cutter and the cutting part 15a of a movable cutter 15 positioned at a slight angle from parallel position, through movement of the biting position of both cutters 15a incident to rotation of the movable cutter 15 is provided with a holding part 17 for holding the movable cutter 15 removably. A pair of sheet guide faces 18a and 19a for positioning the opposite end parts of the sheet in the carrying direction thereof are formed at the movable cutter holding part 17. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a printer that prints on paper and cuts the paper after printing.
[0002]
[Prior art]
Generally, receipt printers and facsimile machines that use long paper such as receipt paper are provided with a cutter device for cutting printed paper to an appropriate length on the downstream side in the paper transport direction when viewed from the printing unit. There are many. As an example of such a cutter device, as shown in FIG. 9, a plate-shaped movable blade 101 having a length over the entire width of a sheet is rotated with respect to a fixed blade 102 and meshed like scissors. There is a rotary cutter device 103 configured to cut an object to be cut (for example, a receipt sheet or the like) located between the blade portions 101a and 102a. The rotary cutter device 103 realizes reliable cutting of the cutting object while having a simple structure.
[0003]
The movable blade 101 of such a rotary cutter device 103 has a blade portion 101a at one edge of a base portion 101b, and has a support shaft 101c at each end of the base portion 101b. It is formed by cutting a member. The movable blade 101 is configured such that the support shaft 101c is rotatably held by the frame 104, is connected to a drive unit (not shown), and can rotate by receiving a driving force from the drive unit. I have.
[0004]
[Problems to be solved by the invention]
However, in such a rotary cutter device 103, when the movable blade 101 reaches the end of its life, the movable blade 101 whose life has expired is removed from the rotary cutter device 103 in order to replace it with a new one. And the drive unit must be disassembled, which is troublesome.
[0005]
Further, in such a rotary cutter device 103, since the sheet is conveyed along one surface of the base 101b of the movable movable blade 101, there is a problem that the position of the sheet becomes unstable.
[0006]
An object of the present invention is to make it possible to easily replace a movable blade and to stabilize the position of a sheet to be conveyed.
[0007]
[Means for Solving the Problems]
The present invention is a paper transport unit that transports paper, a printing unit that prints on the paper transported by the paper transport unit, a fixed blade that has a blade portion that is disposed downstream of the printing unit in the paper transport direction. A movable blade having a blade portion, a movable blade holding portion for detachably holding the movable blade, and a blade portion of the fixed blade and a blade portion of the movable blade having a slight angle from a parallel position. A holding portion that rotatably holds the movable blade holding portion so that the blade portions are engaged with each other so that the meshing position can be moved; and the movable blade holding portion that is held by the holding portion. And a pair of paper guide surfaces formed on the movable blade holding unit and configured to position both ends of the paper conveyed by the paper conveyance unit in a paper conveyance direction.
[0008]
Therefore, the printed paper conveyed between the blade portion of the fixed blade and the blade portion of the movable blade, which is positioned at a slight angle from the parallel position, is moved with the movable blade accompanying the rotation of the movable blade. The cutting is performed by the movement of the meshing position of the blade portions with the fixed blade. The movable blade can be attached to and detached from the movable blade holder. Further, the sheet is conveyed while its both ends are positioned by a pair of sheet guide surfaces formed on the movable blade holding portion.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. This embodiment is an example of application to a POS terminal or a receipt printer which is a printer built in an ECR and provided with a rotary cutter device as a cutter device.
[0010]
FIG. 1 is a vertical sectional side view schematically showing a receipt printer according to the present embodiment. As shown in FIG. 1, a receipt printer 1 includes a main body frame 2, a paper storage unit 3, a paper guide 4, a printing unit 5, a rotary cutter device 6, and the like. The receipt printer 1 has a paper transport path 7 starting from the paper storage unit 3 and passing through the printing unit 5 to the rotary cutter device 6. The paper storage unit 3 has a bottom part formed in an arc shape, and stores and holds a long paper 8 wound in a roll shape as an object to be cut. The paper guide 4 is formed between the front end of the paper storage unit 3 and the printing unit 5 and supports one surface of the paper 8.
[0011]
The printing unit 5 includes a platen 9 and a thermal head 10 which is a print head facing the platen 9. The platen 9 is driven to rotate by a motor (not shown) via a gear train (not shown). The thermal head 10 is attached to a flat plate-shaped head holding member 11. The head holding member 11 is rotatably provided about the fulcrum 12 in a direction approaching and separating from the platen 9. The head holding member 11 is provided between the hook member 43 and a coil spring 13 which functions as a compression spring. Is being urged towards. As a result, the thermal head 10 comes into contact with the platen 9. In the printing unit 5, printing is performed by the thermal head 10 on the paper 8 interposed between the platen 9 and the thermal head 10. The paper 8 is transported along the paper transport path 7 by rotating the platen 9 by a motor. Here, the printing unit 5 also functions as a paper transport unit that transports the paper 8.
[0012]
The rotary cutter device 6 provided on the downstream side of the printing unit 5 in the sheet transport direction is configured by combining a fixed blade 14 and a movable blade 15 both formed in a substantially flat plate shape.
[0013]
Here, FIG. 2 is a perspective view schematically showing the configuration of the rotary cutter device 6 from the front, and FIG. 3 schematically shows a movable blade holding member of the rotary cutter device 6 and a movable blade 15 removed from the movable blade holding member. FIG. 4 is a plan view schematically showing a movable blade holding member with a movable blade 15 attached to the rotary cutter device 6, and FIG. 5 is a drive force transmission mechanism of the rotary cutter device 6. It is a side view which shows a structure schematically.
[0014]
As shown in FIG. 2, the fixed blade 14 has one edge of a substantially flat base 14a as a blade portion 14b. Such a fixed blade 14 is provided with a support shaft 14c at a short-side end located on a side opposite to the blade portion 14b, and is rotatably attached to an upper unit frame 31 described later. A spring 16 (see FIG. 1) is provided between the fixed blade 14 and the upper unit frame 31, and the fixed blade 14 is urged by the spring 16 toward the movable blade 15. The fixed blade 14 is provided with a guide portion 14d for guiding the blade portion 15a of the movable blade 15 to a position where the blade portion 15a of the fixed blade 14 engages with the blade portion 14b. More specifically, the guide portion 14d is continuously protruded from the blade portion 14b at a position off the blade portion 14b of the fixed blade 14. As shown in FIG. 1, such a fixed blade 14 is positioned at a substantially horizontal position when the fixed blade 14 and the movable blade 15 are engaged.
[0015]
On the other hand, the movable blade 15 has a surface 15c that forms the sheet transport path 7 on a substantially flat base 15b, and the movable blade 15 has an edge on the end side of the surface 15c as a blade portion 15a. One surface 15c of the movable blade 15 supports the surface of the sheet 8 conveyed along the sheet conveyance path 7. As shown in FIGS. 3 and 4, the movable blade 15 is detachably attached to a movable blade holding member 17 which is a movable blade holding portion.
[0016]
The movable blade holding member 17 is formed in a rod shape having elasticity, and its axis is parallel to the axis of the platen 9. This movable blade holding member 17 is formed by aluminum die casting. At both ends of the movable blade holding member 17, supporting shafts 18, 19 rotatably supported by a lower unit frame 29 described later are formed, respectively. The movable blade holding member 17 has a plane 20 for supporting the movable blade 15 by making the cross section between the two support shafts 18 and 19 substantially semicircular. Grooves 21 are formed inside the two support shafts 18 and 19 so that both ends of the movable blade 15 can be slidably fitted therein. In addition, a positioning portion 22 that supports and positions the lower end of the movable blade 15 inserted into the groove 21 is formed at the bottom of the groove 21.
[0017]
As shown in FIG. 4, the groove 21 of the movable blade holding member 17 is formed such that the inserted movable blade 15 has a slight angle from the axial direction of the movable blade holding member 17. Specifically, the angle is set so that the blade portion 15a of the movable blade 15 is twisted with respect to the blade portion 14b of the fixed blade 14. Therefore, the blade portion 14b of the fixed blade 14 and the blade portion 15a of the movable blade 15 are positioned with a slight angle from the parallel position, and as shown in FIG. A V-shaped cutting object path A is formed between the portion 14b and the blade portion 15a of the movable blade 15. The cutting object path A is a part of the sheet transport path 7. As shown in FIG. 1, such a movable blade 15 is located at a substantially vertical position when the fixed blade 14 and the movable blade 15 are engaged with each other.
[0018]
Here, two holes 15d, which are engaging portions, are formed in the base portion 15b of the movable blade 15, and two semicircular holes that fit into the holes 15d are formed in the plane 20 of the movable blade holding member 17. Is formed. Then, the movable blade 15 is moved so that the lower end side of the movable blade 15 opposite to the blade portion 15 a is inserted into the groove 21 in order to fit the movable blade 15 into the groove 21. When the member 17 bends, the protrusion 20a fits into the hole 15d. The movable blade 15 fitted in the groove 21 is sandwiched by the elastic groove 21. By these fittings, the movement of the movable blade 15 is regulated, and the movable blade 15 is fixed to the groove 21. When the movable blade 15 is removed from the groove 21 of the movable blade holding member 17, the movable blade 15 is pulled out of the groove 21 so that the movable blade holding member 17 bends and the fitting between the protrusion 20a and the hole 15d is released. Then, the movable blade 15 is removed. Here, the fixing portion 23 is constituted by the hole 15d and the protrusion 20a.
[0019]
A pair of paper guide surfaces 18a, 19a opposed to each other across the plane 20 are formed inside the two support shafts 18, 19 of the movable blade holding member 17 for detachably holding the movable blade 15 in this manner. I have. The interval between the paper guide surfaces 18a and 19a is substantially the same as the width orthogonal to the paper transport direction of the paper 8, and the paper transport path formed by the one surface 15c of the movable blade 15 attached to the movable blade holding member 17. Positioning of both ends of the sheet 8 conveyed 7 in the sheet conveying direction is performed.
[0020]
The support shaft 19 of the movable blade 15 is connected to a driving force transmission mechanism 24 (see FIG. 5) that transmits a driving force of a motor (not shown). Here, a driving unit 25 is configured by these motors and the driving force transmission mechanism 24.
[0021]
The driving force transmission mechanism 24 of the driving unit 25 will be briefly described with reference to FIG. The driving force transmission mechanism 24 is connected to the support shaft 19 of the movable blade 15 and is pivotally supported by the support shaft 19 as a fulcrum. The cutter arm 26 is attached to the lower unit frame 29 and connected to the motor. And a drive crank 28 which is rotatably attached to the lower unit frame 29 and is connected to the gear train 27 and constitutes a cam mechanism together with the cutter arm 26. At the initial position, the cutter arm 26 has an elongated hole 26a that is long in the vertical direction. The eccentric pin 28a of the drive crank 28 is engaged with the elongated hole 26a of the cutter arm 26. That is, the eccentric pin 28a of the drive crank 28 moves inside the elongated hole 26a of the cutter arm 26 with the rotation of the drive crank 28 by the driving force from the motor transmitted from the gear train 27. When the eccentric pin 28a of the drive crank 28 moves inside the elongated hole 26a of the cutter arm 26, the cutter arm 26 swings around the support shaft 19 of the movable blade 15 as a fulcrum.
[0022]
When the cutter arm 26 is swung in this manner, the movable blade 15 rotates around the support shaft 19. And the movable blade 15 will press the guide part 14d of the fixed blade 14 with the rotation. At this time, the fixed blade 14 has a reaction force in a direction opposite to the rotation direction due to the return force of the spring 16 connecting the fixed blade 14 and the upper unit frame 31. That is, since the blade portion 14b of the fixed blade 14 and the blade portion 15a of the movable blade 15 are positioned at a slight angle from the parallel position, the rotation of the movable blade 15 and the reaction force of the fixed blade 14 are determined. As a result, the V-shaped object path A to be cut gradually moves and becomes smaller, so that the respective blade portions 14b and 15a mesh like scissors. That is, the rotary cutter device 6 cuts the sheet 8 to be cut, which is conveyed along the sheet conveying path 7, by engaging the blade 14 b of the fixed blade 14 with the blade 15 a of the movable blade 15.
[0023]
FIG. 6 is a longitudinal sectional side view schematically showing the receipt printer 1 in a state where the upper unit and the lower unit are separated, and FIG. 7 schematically shows the receipt printer 1 in a state where the upper unit and the lower unit are connected. It is a perspective view.
[0024]
As shown in FIGS. 1, 5, 6, and 7, the above-described paper guide 4, the thermal head 10, the movable blade 15, the driving force transmission mechanism 24, and the like are provided on a lower unit frame 29 that is a holding unit. These constitute the lower unit 30. On the other hand, the platen 9 and the fixed blade 14 are provided on a U-shaped upper unit frame 31 provided independently of the lower unit frame 29, and these form an upper unit 32. The paper storage unit 3 is provided on the main body frame 2. The motor for driving the movable blade 15 and the motor for driving the platen 9 are attached to the lower unit frame 29.
[0025]
The lower unit 30 is screwed to the main body frame 2 with screws 33, and thereby is detachable from the main body frame 2. The upper unit 32 is detachable from the lower unit 30 by a connecting mechanism 34.
[0026]
The connection mechanism 34 includes a connection shaft 35 and a platen 9 attached to the upper unit frame 31 of the upper unit 32, a groove 36 formed in the lower unit frame 29 of the lower unit 30 and in which the connection shaft 35 can be fitted, The lower unit frame 30 includes a groove 37 in which both support shafts 9a of the platen 9 can be fitted.
[0027]
The connecting shaft 35 is provided on the upstream side of the platen 9 in the sheet conveying direction, with the axial direction thereof being parallel to the axial direction of the platen 9 where the sheet width direction is set. The groove 36 is formed in both side walls 38a, 38b of the lower unit frame 29 in the up-down direction and has an upper opening. The groove 37 is formed in a pair of inner walls 39a, 39b erected inside the side walls 38a, 38b of the lower unit frame 29, and has an upper opening. The upper unit 32 is positioned with respect to the lower unit 30 by fitting the connecting shaft 35 and the support shafts 9a of the platen 9 into the grooves 36 and 37, and the upper unit 32 and the lower unit 30 are connected. . In this state, the upper unit 32 is fixed to the lower unit 30 so as to restrict the rotation of the upper unit 32 with respect to the lower unit 30. In this connection state, the platen 9 and the thermal head 10 face each other, and the movable blade 15 and the fixed blade 14 are positioned at positions where the paper 8 can be cut.
[0028]
The interval between the pair of inner walls 39a and 39b formed in the lower unit frame 29 is set smaller than the interval between the side walls 40a and 40b of the upper unit frame 31, and when the upper unit 32 is connected to the lower unit 30. By inserting the pair of inner walls 39a, 39b of the lower unit frame 29 between the side walls 40a, 40b of the upper unit frame 31, the position of the upper unit 32 in the left-right direction with respect to the lower unit 30 is guided.
[0029]
As shown in FIG. 8, the lower unit 30 is provided with a hook member 43 having two hook portions 41 formed on the two support shafts 9 a of the platen 9 fitted in the grooves 37 so as to be detachable. ing. The hook member 43 includes a hook portion 41 and a flat plate portion 44 integrally formed with the hook portion 41. The hook member 43 is rotatable about the fulcrum 12 in a direction in which the hook portion 41 is engaged with and disengaged from the support shafts 9 a of the platen 9. The hook member 43 is urged by a coil spring 13 provided between the hook member 43 and the head holding member 11 in a direction in which the two support shafts 9a of the platen 9 are engaged (the direction of the arrow a in FIG. 8).
[0030]
The hook portion 41 includes an inclined portion 42a for contacting the two support shafts 9a of the platen 9 when the upper unit 32 is attached to the lower unit 30 and releasing the interference by the rotation of the hook member 43. An inclined portion 42b is formed to contact the two support shafts 9a of the platen 9 when the 32 is removed from the lower unit 30 and to release the interference by the rotation of the hook member 43. When the upper unit 32 is connected to the lower unit 30, interference of the hook member 43 with respect to the two support shafts 9 a of the platen 9 escapes due to the rotation of the hook member 43 against the urging force of the coil spring 13. Finally, the hooks 41 are engaged with both support shafts 9a of the platen 9, and the upward movement of the upper unit 32 with respect to the lower unit 30 is locked. When the upper unit 32 is removed from the lower unit 30, interference of the hook member 43 with respect to the two support shafts 9 a of the platen 9 is released by the rotation of the hook member 43 against the urging force of the coil spring 13. However, the engagement between the two support shafts 9a of the platen 9 and the hook portion 41 is finally released, and the upper unit 32 can be removed from the lower unit 30.
[0031]
Here, when the upper unit 32 is not connected to the lower unit 30, the hook members 43 urged by the coil spring 13 and the head holding members 11 are positioned by the positioning surfaces 45, 46 formed on the lower unit frame 29. Are positioned in contact with each other.
[0032]
In such a configuration, in order to set the paper 8 on the receipt printer 1, the upper unit 32 is removed. Specifically, by moving the upper unit 32 upward, the lock of the platen 9 by the hook member 43 is released, the connection of the connecting mechanism 34 is released, and the upper unit 32 is removed from the lower unit 30. At this time, the lock of the platen 9 by the hook member 43 can also be released by rotating the hook member 43 in the releasing direction (the direction indicated by the arrow b in FIG. 8). In this state, the paper 8 is stored in the paper storage unit 3, the paper 8 is pulled out downstream of the movable blade 15 in the paper transport direction, and the connection shaft 35 of the upper unit 32 and the platen 9 are fitted into the grooves 36 and 37, respectively. The upper unit 32 is moved toward the lower unit 30 so that the upper unit 32 and the lower unit 30 are connected to each other. At this time, the platen 9 is locked by the hook member 43. By connecting the upper unit 32 and the lower unit 30 in this way, the paper 8 is moved between the connecting shaft 35 and the paper guide 4, between the thermal head 10 and the platen 9, and between the fixed blade 14 and the movable blade. It is in a state of being passed between the blade 15. As described above, in the present embodiment, since the upper unit 32 is detachably provided to the lower unit 30, the paper 8 can be easily set on the receipt printer 1.
[0033]
At the time of printing, the paper 8 stored and held in the paper storage unit 3 is driven by the platen 9 to be transported in the paper transport path 7 toward the printing unit 5 and the rotary cutter device 6 while the thermal head 10 Thus, predetermined receipt print contents are sequentially printed. When printing is completed, the trailing end of the sheet 8 is cut by driving the movable blade 15 in the cutting device, and the cut sheet 8 is issued as a receipt.
[0034]
Here, the sheet 8 is conveyed along one surface 15 c of the movable blade 15. At this time, both ends of the sheet 8 are positioned by a pair of sheet guide surfaces 18 a and 19 a formed on the movable blade holding member 17. Since the paper 8 is conveyed while being conveyed, the position of the conveyed paper 8 can be stabilized.
[0035]
Here, when the movable blade 15 has reached the end of its life, the movable blade 15 that has reached the end of its life is removed from the movable blade holding member 17, and a new movable blade 15 is attached to the movable blade holding member 17, whereby the movable blade 15 is moved. Can be exchanged. As described above, in the present embodiment, since the movable blade 15 is detachable from the movable blade holding member 17, the movable blade can be replaced by holding the movable blade like a conventional rotary cutter device. There is no need to disassemble the part that provides the driving force to the movable blade or the movable blade 15, and the movable blade 15 can be easily replaced. When the movable blade 15 is replaced, the user grips the blade portion 15a side of the movable blade 15 with his / her hand. However, even if the user touches the blade portion 15a, his / her hand is not damaged, so it is safe.
[0036]
In addition, since the force that the movable blade 15 receives from the fixed blade 14 by the cutting operation is a force in a direction in which the movable blade 15 is further fitted into the groove 21 of the movable blade holding member 17, the movable blade 15 21 is prevented from coming off.
[0037]
Further, in the present embodiment, a paper transport unit (printing unit 5) that transports the paper 8, a printing unit 5 that prints on the paper 8 transported by the paper transport unit, and a downstream of the printing unit 5 in the paper transport direction. A fixed blade 14 having a blade portion 14b, a movable blade 15 having a blade portion 15a, and a movable blade holding portion for detachably holding the movable blade 15 so that one surface 15c of the movable blade 15 is exposed. The movable blade holding member 17, the blade portion 14b of the fixed blade 14, and the blade portion 15a of the movable blade 15 are located at a slight angle from the parallel position, and the blade portions 14b, 15a mesh with each other, and The lower unit frame 29, which is a holding unit that rotatably holds the movable blade holding member 17 so that the meshing position can be moved, and the movable blade holding member 17 held by the lower unit frame 29 is rotationally driven. Driving unit 2 The one surface 15c of the movable blade 15 supports the surface that is one surface of the sheet 8 conveyed by the sheet conveying unit, so that the blade 14b of the fixed blade 14 and the blade 15a of the movable blade 15 The paper 8 can be reliably conveyed in between, and the paper 8 can be reliably cut. Further, the position of the sheet 8 to be cut can be stabilized, and the sheet 8 can be cut reliably.
[0038]
Further, in the present embodiment, the movable blade holding member 17 as the movable blade holding portion has the groove 21 in which the movable blade 15 is fitted at an angle from a position parallel to the axis of the movable blade holding member 17. By having the groove 21, the blade portion 15a of the movable blade 15 and the blade portion 14b of the fixed blade 14 are positioned at a slight angle from the parallel position, so that the movable blade 15 and the fixed blade 14 It is not necessary to make the axis of the movable blade holding member 17 be inclined with respect to the paper width direction (the axis of the platen 9) in order to position at a slight angle from the parallel position. The axis of the blade holding member 17 can be parallel to the width direction of the paper 8, and it is easy to manufacture the movable blade holding member 17 and the mounting portion of the movable blade holding member 17.
[0039]
Further, in the present embodiment, the movable blade holding member 17 which is a movable blade holding portion has elasticity, and the movable blade holding member 17 and the protrusion 20 a provided on one of the movable blade holding member 17 and the movable blade 15 are movable. It has a hole 15d as an engaging portion provided on one of the other of the blade holding member 17 and the movable blade 15, and the movable blade holding member 17 is moved with the movement of the movable blade 15 into the groove 21. The protrusion 20a and the hole 15d are engaged with each other so that the movable blade 15 fitted in the groove 21 is fixed to the groove 21 so that the movable blade 15 is fitted in the groove 21 of the movable blade holding member 17. The combined movable blade 15 can be prevented from falling out of the groove 21.
[0040]
【The invention's effect】
According to the present invention, since the movable blade can be attached to and detached from the movable blade holder, the movable blade can be replaced by driving the movable blade to a portion holding the movable blade or a movable blade like a conventional rotary cutter device. There is no need to disassemble the part that applies the force, and the movable blade can be easily replaced. Further, since the sheet is conveyed while being positioned at both ends by the pair of sheet guide surfaces formed on the movable blade holder, the position of the conveyed sheet can be stabilized.
[Brief description of the drawings]
FIG. 1 is a vertical sectional side view schematically showing a receipt printer according to an embodiment of the present invention.
FIG. 2 is a perspective view schematically showing the configuration of the rotary cutter device from the front.
FIG. 3 is a perspective view schematically showing a movable blade holding member of the rotary cutter device and a movable blade removed from the movable blade holding member, as viewed from the back.
FIG. 4 is a plan view schematically showing a movable blade holding member in a state where the movable blade is attached to the rotary cutter device.
FIG. 5 is a side view schematically showing a configuration of a driving force transmission mechanism of the rotary cutter device.
FIG. 6 is a vertical sectional side view schematically showing a receipt printer in a state where an upper unit and a lower unit are separated.
FIG. 7 is a perspective view schematically showing the receipt printer in a state where the upper unit and the lower unit are connected.
FIG. 8 is a vertical sectional side view showing a mounting structure of a thermal head and a hook member.
FIG. 9 is a perspective view showing a conventional rotary cutter device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Receipt printer (printer), 5 ... Printing part, 8 ... Paper, 14 ... Fixed blade, 14b ... Blade part, 15 ... Movable blade, 15a ... Blade part, 15c ... One surface, 15d ... Hole (engagement part), 17: movable blade holding member (movable blade holding portion), 18a: paper guide surface, 19a: paper guide surface, 20a: protrusion, 21: groove, 23: fixed portion, 25: drive portion, 29: lower unit frame ( Holder)

Claims (4)

A paper transport unit for transporting the paper,
A printing unit that prints on the paper conveyed by the paper conveyance unit,
A fixed blade having a blade portion disposed downstream of the printing unit in the paper transport direction,
A movable blade having a blade portion,
A movable blade holding unit that detachably holds the movable blade,
The blade portion of the fixed blade and the blade portion of the movable blade are located at a slight angle from the parallel position, the blade portions mesh with each other, and the movable portion is movable so that the meshing position can be moved. A holder for rotatably holding the blade holder,
A driving unit that rotationally drives the movable blade holding unit held by the holding unit;
A pair of paper guide surfaces formed on the movable blade holding unit and for positioning both ends of the paper conveyed by the paper conveyance unit in the paper conveyance direction,
A printer comprising: A paper transport unit for transporting the paper,
A printing unit that prints on the paper conveyed by the paper conveyance unit,
A fixed blade having a blade portion disposed downstream of the printing unit in the paper transport direction,
A movable blade having a blade portion,
A movable blade holding unit that detachably holds the movable blade so that one surface of the movable blade is exposed,
The blade portion of the fixed blade and the blade portion of the movable blade are located at a slight angle from the parallel position, the blade portions mesh with each other, and the movable portion is movable so that the meshing position can be moved. A holder for rotatably holding the blade holder,
A driving unit that rotationally drives the movable blade holding unit held by the holding unit;
With
The printer in which the one surface of the movable blade supports one surface of the paper conveyed by the paper conveyance unit. The printer according to claim 1, wherein the movable blade holder has a groove in which the movable blade is fitted at an angle from a position parallel to an axis of the movable blade holder. The movable blade holder has elasticity,
The movable blade having a protrusion provided on one of the movable blade holding portion and the movable blade, and an engaging portion provided on the other of the movable blade holding portion and the movable blade; By moving the movable blade holding portion along with the movement for fitting into the groove, the protrusion and the engaging portion are engaged with each other, and the movable blade fitted into the groove is fitted into the groove. 4. The printer according to claim 2, further comprising a fixing portion for fixing.

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