JP2020100013A - Cutter device and printer using the same - Google Patents

Abstract

To provide a cutter device which can keep a stop position of a movable blade constant during partial cutting even if there is variation in output of a home position sensor.SOLUTION: A cutter device 10 comprises: a stationery blade 11; a movable blade 12 which is so provided as to be capable of moving forward and backward with respect to the stationery blade 11; a movable blade drive mechanism 13 which drives the movable blade 12 in the forward/backward direction; a home position sensor 20 which detects that the movable blade 12 has moved to the vicinity of a home position which is a retracted position farthest when viewed from the stationery blade 11; and a control part which controls the movable blade drive mechanism 13 on the basis of output of the home position sensor 20. The control part previously measures a switching position of the home position sensor 20 in the forward/backward direction of the movable blade 12, corrects a partial cut standard stroke amount of the movable blade 12 on the basis of the measured value, delivers the movable blade 12 by the corrected partial cut stroke amount, and partially cuts a sheet.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cutter device which is mounted on a ticket issuing device for issuing receipts, tickets, etc., and cuts continuous paper such as roll paper, and more particularly, to a cutter device having a partial cutting function for cutting a part of paper. .. The present invention also relates to a printer equipped with such a cutter device.

Ticket issuing devices for issuing receipts, tickets, etc. are known. The ticket issuing device is equipped with a printer, prints on continuous paper such as roll paper, cuts the printed portion with a cutter, and then issues it as a receipt or ticket.

As one of the cutter devices built in the printer, a method is known in which a movable blade is arranged to move forward and backward with respect to a fixed blade, and a sheet is cut while the movable blade presses and slides on the fixed blade (for example, Patent References 1 to 3). The blade edge of the movable blade is formed in a substantially V-shape, and a non-cutting slit is provided at the lower end of the V-shaped blade edge, which allows a partial cut (a single point is left in the central portion). The selection between full cut and partial cut can be made by changing the stop position of the movable blade. In other words, by moving the slit of the movable blade far enough from the position of the blade edge of the fixed blade, it is possible to fully cut the paper, and the slit of the movable blade can be placed in front of the blade edge of the fixed blade (partial cut position). The paper can be partially cut by stopping it.

In the partial cut, the variation in the stroke amount of the movable blade causes an increase in the width of the non-cutting portion of the paper and an unintended full cut. Therefore, the control of the stroke amount of the movable blade is very important. As a method of controlling the stroke amount of the movable blade, for example, in Patent Document 4, a cutter position sensor for detecting the positions of the full cut and the partial cut of the movable blade in a cutting mechanism of a printer having both full cut and partial cut functions is disclosed. Is provided and the stop position of the movable blade is controlled based on the signal output from the cutter position sensor. According to this method, it is possible to change the cutting depth of the partial cut by changing the position of the cutter position sensor.

Patent Document 5 describes a printer with a cutter including a home position sensor that detects an initial position of a movable blade. Since this home position sensor also serves as the platen unit detection sensor, it is not necessary to separately prepare a sensor for detecting the set state of the platen roller, and the cost can be reduced.

Patent Document 6 has a function of measuring the time required for the movable blade to make one reciprocating movement between the cutting position and the open position, and determining the cleaning time of the fixed blade and the movable blade when the measured time exceeds a threshold value. Listed printers.

JP, 2008-68340, A Japanese Utility Model Publication No. 7-11907 Japanese Patent Laid-Open No. 11-33976 JP, 2003-127483, A JP, 2013-095045, A JP, 2018-183906, A

When a plurality of cutter position sensors are provided as in Patent Document 4, the manufacturing cost increases and the reliability decreases, so the number of sensors should be as small as possible. As the cutter position sensor, as described in Patent Document 5, it is preferable to provide a sensor (home position sensor) that detects that the movable blade has returned to the retracted position from the viewpoint of safety. It is preferable to control the partial cut stroke amount of the movable blade based on the output of the position sensor.

However, when there is variation in the home position position of the movable blade detected by the home position sensor, even if the movable blade is accurately moved with a constant stroke amount, variation occurs in the partial cutting position of the movable blade. Develops into a malfunction. There are various factors that cause the output of the home position sensor to vary.In addition to the initial factors such as the accuracy of various components, the mounting position of the sensor, and the variation in the operating position of the switch of the home position sensor, the number of cut operations increases. It also occurs due to changes over time (part wear).

Therefore, an object of the present invention is to provide a cutter device and a printer using the cutter device that can keep the stop position of the movable blade constant at the time of partial cutting even if the output of the home position sensor varies. is there.

In order to solve the above problems, the cutter device according to the present invention includes a fixed blade, a movable blade that is provided so as to be movable back and forth toward the fixed blade, a movable blade drive mechanism that drives the movable blade in the forward and backward directions, and A home position sensor that detects the movement of the movable blade near the home position, which is the most retracted position when viewed from the fixed blade, and control that controls the movable blade drive mechanism based on the output of the home position sensor. And a control unit that pre-measures the switching position of the home position sensor in the advancing/retreating direction of the movable blade, and based on the measurement value of the switching position of the home position sensor, a partial cut standard of the movable blade. It is characterized in that the stroke amount is corrected and the movable blade is sent out with the corrected partial cut stroke amount to partially cut the paper.

According to the present invention, even if the output of the home position sensor varies, the stop position of the movable blade during partial cutting can be kept constant.

The control unit obtains a difference between a standard value and a measured value of the switching position of the home position sensor as a correction amount of the partial cut standard stroke amount, and subtracts the difference from the partial cut standard stroke amount to obtain the partial It is preferable to correct the cut standard stroke amount. Thereby, the partial cutting position of the movable blade can be kept constant.

The movable blade drive mechanism includes a stepping motor, and the control unit rotates the stepping motor forward to feed the movable blade to a partial cut position, and then reversely rotates the stepping motor to rotate the movable blade. It is preferable to return to the home position. Thereby, the stroke amount of the movable blade can be accurately controlled.

From the half value of the number of steps of the stepping motor corresponding to the ON area of the home position sensor during one reciprocating movement of the movable blade in the forward/backward direction, from the home position to the switching position of the home position sensor. It is preferable to obtain the number of steps of the stepping motor required for the movable blade to move. Thereby, the corrected partial cut stroke amount can be easily obtained.

The movable blade drive mechanism includes a rotary blade drive gear that is rotationally driven by the stepping motor, is a crank mechanism that converts the rotational movement of the rotary blade drive gear into reciprocating movement of the movable blade, the movable blade, It is preferable that when the movable blade drive gear makes one rotation, the sheet is fully cut by making one reciprocal movement in the advancing and retracting direction. As a result, it is possible to realize a cutter device that has both a full-cut function and a partial-cut function for paper.

Further, the printer according to the present invention has a paper feeding mechanism for feeding the paper to the paper conveying path, a printing unit for printing on the paper fed to the paper conveying path by the paper feeding mechanism, and the features of the present invention described above. A cutter device for cutting the cut sheet is provided.

According to the present invention, it is possible to provide a printer using a cutter device capable of maintaining a constant stop position of a movable blade at the time of partial cutting, even if the output of a home position sensor varies.

The printer according to the present invention further includes a power supply unit that supplies electric power to the paper feed mechanism, the printing unit, and the cutter device, and the control unit measures the correction amount of the partial stroke standard stroke amount of the movable blade when the power is turned on. It is preferable to take action. According to the present invention, the initialization operation of the cutter device can be performed at an appropriate timing.

According to the present invention, it is possible to provide a cutter device and a printer using the cutter device that can keep the stop position of the movable blade constant at the time of partial cutting even if the output of the home position sensor varies.

FIG. 1 is a side view schematically showing a configuration of a printer according to an embodiment of the present invention. FIG. 2 is a plan view schematically showing the configuration of the cutter device 10 according to the embodiment of the present invention. 3A and 3B are views for explaining the operation of the movable blade 12, where FIG. 3A shows a full cut mode and FIG. 3B shows a partial cut mode. 4A and 4B are schematic plan views for explaining the configuration and operation of the home position sensor. FIG. 4A is a state in which the home position sensor is off, and FIG. 4A is a home position sensor 20. Indicates that they are on. FIG. 5 is a graph for explaining the relationship between the rotation angles of the movable blade drive gears 16A and 16B, the position of the movable blade 12 in the forward/backward direction, and the on/off state of the home position sensor 20. FIGS. 6A and 6B are diagrams schematically showing the relationship between the on/off state of the home position sensor and the number of steps of the stepping motor. FIG. 6A shows the case where there is no error in the home position sensor. b) shows the case where there is an error in the home position sensor. FIG. 7 is a flowchart for explaining the initialization operation of the cutter device. FIG. 8 is a flowchart for explaining the partial cut operation.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view schematically showing a configuration of a printer according to an embodiment of the present invention.

As shown in FIG. 1, the printer 1 includes a housing 2 provided with a roll paper storage unit, a printing unit including a print head 4, a paper feeding mechanism including a platen roller 5, a fixed blade 11 and a movable blade 12. A cutter device 10 that cuts the printed paper is provided, a control unit 7 that controls each unit, and a power supply unit 8 that supplies electric power to each unit. The paper 3P continuously fed from the roll paper 3R housed in the housing 2 is printed by the print head 4 and the platen roller 5, cut by the cutter device 10, and then discharged from the ticket issuing port 2a. .. The control unit 7 controls the printing operation of the print head 4, the rotation operation of the platen roller 5, and the cutting operation of the cutter device 10 in accordance with a print request from the outside. The platen roller 5 and the cutter device 10 are driven by a motor (not shown). Although details will be described later, the control unit 7 performs an initialization operation of the cutter device 10 when the printer 1 is powered on, for example.

FIG. 2 is a plan view schematically showing the configuration of the cutter device 10 according to the embodiment of the present invention.

As shown in FIG. 2, the cutter device 10 according to the present embodiment is provided with a fixed blade 11 fixed at a predetermined position in the vicinity of the paper transport path 6 and a fixed blade 11 that faces the fixed blade 11 with the paper transport path 6 interposed therebetween. A movable blade 12 provided to be movable back and forth toward the fixed blade 11, a movable blade drive mechanism 13 for driving the movable blade 12 in the forward and backward directions, and whether or not the movable blade 12 is returned to its retracted home position. And a home position sensor 20 for detecting As described above, the movement of the movable blade 12 is controlled by the controller 7.

The movable blade 12 advances toward the fixed blade 11 to cut the paper 3P (see FIG. 1) passing through the paper transport path 6 between the fixed blade 11 and the movable blade 12. The blade edge of the fixed blade 11 is linear, whereas the blade edge of the movable blade 12 is formed in a substantially V shape in the forward and backward direction. By making the blade edge of the movable blade 12 substantially V-shaped, the blade edge of the movable blade 12 can be obliquely inserted with respect to the fixed blade 11, and the scissors effect can efficiently cut the sheet.

The rear end portion of the movable blade 12 is fixed to a movable blade holding member 14 made of resin, and the movable blade holding member 14 is configured to be movable together with the movable blade 12 in the forward and backward directions. The blade edge of the movable blade 12 is in pressure contact with the fixed blade 11 by a movable blade pressure contact member (not shown), and by moving forward while sliding in pressure contact with the fixed blade 11, the paper between the fixed blade 11 and the movable blade 12 is moved. Disconnect. Guide pieces 12b projecting forward from the cutting edge are provided at front end portions of both ends of the movable blade 12 in the width direction, and fixed even when the movable blade 12 is moving to the rearmost home position as illustrated. The movable blade 12 is kept pressed against the blade 11.

A non-cutting slit 12a is provided at the deepest side (center in the width direction) of the V-shaped blade edge of the movable blade 12 when viewed from the fixed blade 11 side. Although only one slit 12a is provided in the present embodiment, two or more slits 12a can be provided. When the blade edge of the movable blade 12 advances toward the fixed blade 11 and the slit 12a completely passes the position of the blade edge of the fixed blade 11, the sheet is fully cut. On the other hand, when the slit 12a of the movable blade 12 is stopped immediately before the blade edge of the fixed blade 11 (partial cutting position), the paper is partially cut and is partially connected at the position of the slit 12a.

The movable blade drive mechanism 13 includes a stepping motor 15 and first and second movable blade drive gears 16A and 16B that are rotationally driven by the stepping motor 15. The pinion gear 15a provided on the rotation shaft of the stepping motor 15 meshes with the second movable blade drive gear 16B via the reduction gears 18a and 18b, and the second movable blade drive gear 16B is the first movable blade drive gear. It meshes with 16A. Therefore, the first movable blade drive gear 16A rotates in the opposite direction to the second movable blade drive gear 16B. The movable blade drive mechanism 13 constitutes a crank mechanism that converts the rotational movement of the rotary blade drive gears 16A and 16B into the reciprocating movement of the movable blade 12.

First and second crankpins 17A and 17B are planted on the main surfaces of the first and second movable blade drive gears 16A and 16B, respectively, and the pair of crankpins 17A and 17B are movable blade holding members. 14 are inserted into a pair of drive grooves 14a, 14a, respectively. The pair of drive grooves 14a, 14a are long holes formed in a straight line along the width direction orthogonal to the advancing/retreating direction of the movable blade 12. When the first and second movable blade drive gears 16A and 16B are driven by the stepping motor 15 to rotate, the crankpins 17A and 17B rotate to change their positions in the X and Y directions.

Here, the second crank pin 17B rotates in the opposite direction to the first crank pin 17A, but the positions of the first and second crank pins 17A and 17B in the advancing/retreating direction (Y direction) of the movable blade 12 are relative to each other. It is configured to match. Therefore, when the first crank pin 17A moves to the frontmost in the Y direction, the second crankpin 17B also moves to the frontmost in the Y direction. Further, when the first crank pin 17B moves rearmost in the Y direction, the second crank pin 17B also moves rearmost in the Y direction. Further, when the first crank pin 17A moves to the leftmost side (outside), the second crankpin 17B moves to the rightmost side (outside), and conversely, the first crankpin 17A moves to the rightmost side (center side). When moved to, the second crank pin 17B moves to the leftmost side (center side).

The changes in the positions of the crankpins 17A and 17B in the X direction coincide with the formation direction of the drive grooves 14a and 14a, so the crankpins 17A and 17B can move freely in the drive grooves 14a and 14a and are movable. The blade holding member 14 does not receive a force in the X direction from the crank pins 17A and 17B. On the other hand, the change in the positions of the crankpins 17A and 17B in the Y direction is orthogonal to the direction in which the drive grooves 14aA and 14a are formed, so that the movable blade holding member 14 engaged with the crankpins 17A and 17B is the crankpin. It moves in the Y direction by receiving the force from 17A, 17B. That is, the movable blade 12 moves back and forth in the Y direction together with the movable blade holding member 14. When the first and second movable blade drive gears 16A and 16B make one rotation, the movable blade 12 can reciprocate once together with the movable blade holding member 14, and the first and second movable blade drive gears. When 16A and 16B rotate continuously, reciprocating motion can be repeated.

3A and 3B are views for explaining the operation of the movable blade 12, where FIG. 3A shows a full cut mode and FIG. 3B shows a partial cut mode.

As shown in FIG. 3A, when the paper is fully cut, the slit 12a of the movable blade 12 is sent forward from the position of the blade edge of the fixed blade 11 to cut the paper. The forward/backward movement of the movable blade 12 in the full cut mode can be realized by simply rotating the first and second movable blade drive gears 16A and 16B once. Alternatively, the first and second movable blade drive gears 16A and 16B may be rotated 180° forward and then reversely rotated to return to their original positions (home positions). When the crankpins 17A and 17B come closest to the fixed blade 11, the slit 12a of the movable blade 12 completely passes through the position of the blade edge of the fixed blade 11 and is further forwardly fed, so that the paper can be fully cut. ..

On the other hand, as shown in FIG. 3B, when the paper is partially cut, the movable blade 12 is moved forward so that the slit 12a of the movable blade 12 stops immediately before the blade edge of the fixed blade 11 (partial cutting position). Let After that, the first and second movable blade drive gears 16A and 16B are rotated in the reverse direction to return the movable blade 12 to the original position (home position). As described above, the paper can be partially cut.

4A and 4B are schematic plan views for explaining the configuration and operation of the home position sensor 20, where FIG. 4A is a state in which the home position sensor 20 is off, and FIG. 4A is a home position. The sensor 20 is in the ON state.

As described above, the home position sensor 20 is a sensor that detects that the movable blade 12 has returned to the vicinity of the home position. The home position of the movable blade 12 is the position where the movable blade 12 is most retracted when viewed from the fixed blade 11. The home position sensor 20 according to the present embodiment is a mechanical switch, but it is also possible to use an optical switch.

As shown in FIG. 4A, since the rear end of the movable blade holding member 14 does not push the lever switch 20a of the home position sensor 20 when the movable blade 12 is moving forward from the home position, the home position is not detected. The sensor 20 is off. Therefore, the control unit 7 can detect that the movable blade 12 has not returned to the vicinity of the home position.

On the other hand, as shown in FIG. 4B, when the movable blade 12 is retracted and returned to the home position, the lever switch 20a of the home position sensor 20 is pushed by the rear end of the movable blade holding member 14 and is in the ON state. Therefore, the control unit 7 can detect that the movable blade 12 has returned to the vicinity of the home position.

In partial cutting of paper, it is necessary to accurately control the stroke amount of the movable blade 12 up to the tip of the fixed blade 11, and for that purpose, it is necessary to accurately grasp the position of the movable blade 12. The stroke amount of the movable blade 12 up to the partial cut position is controlled based on the number of steps of the stepping motor 15.

FIG. 5 is a graph for explaining the relationship between the rotation angles of the movable blade drive gears 16A and 16B, the position of the movable blade 12 in the forward/backward direction (movable blade stroke amount), and the on/off state of the home position sensor 20.

As shown in FIG. 5, the rotation angle of the movable blade drive gears 16A and 16B at the most retracted position (home position) of the movable blade 12 is set as a reference angle (0°), and the movable blade drive gears 16A and 16B are rotated 360°. The movable blade 12 is reciprocated once. At the position where the movable blade 12 is most retracted, the home position sensor 20 is on. When the movable blade drive gears 16A and 16B are rotated to move the movable blade 12 forward, the home position sensor 20 switches from on to off when the rotation angle of the movable blade drive gears 16A and 16B reaches, for example, 40°. However, there are individual differences between devices and changes over time in this switching timing, and there are some that switch a little earlier and some that switch a little later. The variation in the switching position of the home position sensor 20 affects the quality of partial cut.

After that, when the movable blade drive gears 16A and 16B further rotate, the movable blade 12 advances and the stroke amount of the movable blade 12 increases. When the rotation angle of the movable blade drive gears 16A and 16B reaches 180°, the movable blade 12 moves to the most advanced position. At this time, since the slit 12a of the movable blade 12 has passed the position of the blade edge of the fixed blade 11, the paper is fully cut (see FIG. 3B).

When the movable blade drive gears 16A and 16B further rotate, the movable blade 12 moves backward. Then, when the rotation angles of the movable blade drive gears 16A and 16B reach, for example, 320° (=−40°), the home position sensor 20 switches from OFF to ON, and it is detected that the movable blade 12 has returned to the home position. .. After that, when the movable blade drive gears 16A and 16B become the reference angle (360° (=0°)), the movable blade 12 returns to the most retracted position.

As described above, when the movable blade drive gears 16A and 16B are rotated once, the movable blade 12 operates in the full cut mode. Therefore, in order to partially cut the paper, the movable blade drive gears 16A and 16B are normally rotated. After feeding the movable blade 12 to the partial cut position, it is necessary to rotate the movable blade drive gears 16A and 16B in reverse. In FIG. 5, the partial cut position of the movable blade 12 is the position when the rotation angle of the movable blade drive gears 16A and 16B reaches 140°. Therefore, in the partial cut, control of the stroke amount of the movable blade 12 is very important. If the partial cutting stroke amount of the movable blade 12 is too small, the non-cutting portion is too wide, so that the ticketing portion cannot be separated from the paper body cleanly. If the partial cutting stroke amount of the movable blade 12 is too large, the ticketing portion is too large. Because it will be full cut.

Therefore, in this embodiment, in order to accurately control the stroke amount of the movable blade 12 in the partial cut mode, the initialization operation of the cutter device 10 is performed. The timing for performing the initialization operation is not particularly limited, but it is preferable that the initialization operation is performed every time the power of the printer 1 is turned on, or once every several times, or periodically such as once a month or once a week. Good. Next, the initialization operation for the partial cut control will be described.

FIG. 7 is a flowchart for explaining the initialization operation of the cutter device 10.

As shown in FIG. 7, in the initialization operation of the cutter device 10, the motor drive step number B in the ON area of the home position sensor 20 when the movable blade 12 is moved back and forth near its home position is measured (step S11, S12). Specifically, when the stepping motor 15 is normally rotated, the home position sensor 20 detects a position on the plus side (a position of about 40° plus) where the home position sensor 20 switches from on to off, and then the stepping motor 15 is rotated in the reverse direction. Sometimes the home position sensor 20 detects a position on the negative side (a position around -40°) where the home position sensor 20 switches from ON to OFF, and the number of motor drive steps B required to move from the positive side switching position to the negative side switching position. To get The half value B/2 of the motor driving step number B means the driving step number of the stepping motor 15 necessary for the movable blade 12 to move from the most retracted standby position (home position) to the switching position of the home position sensor 20. ..

Next, the difference between the measured motor drive step number B and the standard value (designed motor drive step number A) is obtained as a correction value α=(BA)/2 (step S13). The correction value α thus obtained is stored in the memory in the control unit 7 (step S14). With the above, the initialization operation ends (step S15).

FIGS. 6A and 6B are diagrams schematically showing the relationship between the on/off state of the home position sensor 20 and the number of steps of the stepping motor 15, and FIG. 6A shows no error of the home position sensor 20. Cases (standard output) and (b) show cases where there is an error in the home position sensor 20, respectively.

As shown in FIG. 6A, the standard number of steps in the ON area of the home position sensor 20 is A, and the standard number of partial cuts is N. That is, the cutter device 10 rotates the stepping motor 15 by the standard number N of partial cut steps from the position where the home position sensor 20 switches from on to off, thereby moving the movable blade 12 forward by a standard cut standard stroke amount. Is designed to be cleanly cut.

As shown in FIG. 6B, it is assumed that the number of measurement steps in the ON area of the home position sensor 20 of a certain cutter device 10 is B (>A). In this case, when the movable blade 12 is advanced by the partial cut standard stroke amount (partial cut standard step number N) from the position where the home position sensor 20 is switched from on to off, the slit 12a of the movable blade 12 passes over the partial cut position. Since the sheet 3P is stopped, the sheet 3P is fully cut. When B<A, the partial cut stroke amount of the paper is insufficient and the width of the non-cut portion becomes too wide, so that the ticket issuing portion cannot be cut off cleanly.

Therefore, a correction value α=(B−A)/2 is obtained, and the partial cut standard step number N is corrected using this correction value α. The corrected motor drive step number N′=(N−α). Furthermore, the corrected motor drive step number required for the movable blade 12 to return to the home position (standby position) from the position where the home position sensor 20 switches from on to off is A/2+α.

FIG. 8 is a flowchart for explaining the actual partial cut operation.

As shown in FIG. 8, in the partial cutting operation, the stepping motor 15 is normally rotated to move the movable blade 12 forward (steps S21 and S22N). Then, when the movable blade 12 reaches the switching position of the home position sensor 20, the home position sensor 20 is switched from on to off (step S22Y).

Next, the movable blade 12 is stopped at the position where the stepping motor 15 is rotated by (N-α) steps from the switching position (reference position) of the home position sensor 20 (step S23). As a result, the movable blade 12 moves in a stroke amount according to the corrected motor driving step number N′=(N−α), and thus the movable blade 12 can be stopped at the partial cut position.

Then, the stepping motor 15 is rotated in the reverse direction to move the movable blade 12 backward (step S24). Then, when the movable blade 12 reaches the switching position of the home position sensor 20, the home position sensor 20 is switched from off to on, so that the stepping motor 15 is further rotated by a predetermined number of steps (B/2 (=A/2+α) steps). Then, the movable blade 12 is stopped at the standby position (home position) (step S26). With the above, the partial cut operation is completed.

As described above, since the cutter device 10 according to the present embodiment corrects the variation in the output of the home position sensor and sends the movable blade 12 to the partial cut position, the stop position of the movable blade 12 at the time of partial cutting is kept constant. Can be kept. Therefore, the reliability of the partial cut can be improved.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. It goes without saying that it is included in the range.

For example, in the above-described embodiment, the case where the movable blade 12 is substantially V-shaped has been described as an example, but the present invention is not limited to such a shape, and for example, it may be directed from one side to the other in the width direction. The shape may be inclined in one direction and may be a corrugated shape or a sawtooth shape. That is, the present invention can be applied to various cutter devices in which the stroke amount of the partial cut is different from that of the full cut.

1 Printer 2 Housing 2a Ticketing Port 3P Paper 3R Roll Paper 4 Printing Head 5 Platen Roller 6 Paper Conveying Path 7 Control Unit 8 Power Supply Unit 10 Cutter Device 11 Fixed Blade 12 Movable Blade 12a Non-Cutting Slit 12b Guide Piece 13 Movable Blade Drive Mechanism 15 Stepping motor 15a Pinion gear 16A First movable blade drive gear 16B Second movable blade drive gears 17A, 17B Crank pins 18a, 18b Reduction gear 19 Movable blade holding member 19a Drive groove (long hole)
20 Home position sensor 20a Lever switch

Claims (7)

Fixed blade,
A movable blade provided so as to be able to advance and retreat toward the fixed blade,
A movable blade drive mechanism for driving the movable blade in the forward and backward directions,
A home position sensor that detects that the movable blade is moving near the home position, which is the most retracted position when viewed from the fixed blade,
A control unit that controls the movable blade drive mechanism based on the output of the home position sensor,
The control unit is
Pre-measure the switching position of the home position sensor in the forward and backward direction of the movable blade,
Based on the measured value of the switching position of the home position sensor, correct the partial cut standard stroke amount of the movable blade,
A cutter device, wherein the movable blade is sent out with a corrected partial cut stroke amount to partially cut a sheet. The control unit obtains a difference between a standard value and a measured value of the switching position of the home position sensor as a correction amount of the partial cut standard stroke amount, and subtracts the difference from the partial cut standard stroke amount to obtain the partial The cutter device according to claim 1, wherein the cutting standard stroke amount is corrected. The movable blade drive mechanism includes a stepping motor,
The control unit rotates the stepping motor forward to feed the movable blade to a partial cut position, and then reversely rotates the stepping motor to return the movable blade to the home position. Cutter device. From the half value of the number of steps of the stepping motor corresponding to the ON area of the home position sensor during one reciprocating movement of the movable blade in the forward/backward direction, from the home position to the switching position of the home position sensor. The cutter device according to claim 3, wherein the number of steps of the stepping motor required to move the movable blade is obtained. The movable blade drive mechanism includes a rotary blade drive gear that is rotationally driven by the stepping motor, and is a crank mechanism that converts rotational movement of the rotary blade drive gear into reciprocating movement of the movable blade,
The cutter device according to claim 3, wherein the movable blade reciprocates once in the advancing/retreating direction to fully cut the sheet when the movable blade drive gear makes one rotation. A paper feed mechanism that feeds the paper to the paper transport path,
A printing unit that prints on the paper fed to the paper transport path by the paper feed mechanism;
A printer, comprising: the cutter device according to claim 1, which cuts the printed sheet. Further comprising a power supply unit for supplying electric power to the paper feeding mechanism, the printing unit and the cutter device,
The printer according to claim 6, wherein the control unit performs a measurement operation of a correction amount of a partial stroke standard stroke amount of the movable blade when the power is turned on.

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