JP2011148248A - Cutter mechanism, printer, and method of controlling the cutter mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutter mechanism that can eliminate a waste length between a printing center position and an automatic cutting position, can readily discharge continuous paper after printing and cutting, and can smoothly perform transporting of the paper to a printing start position, and to provide a printer having the same and a method of controlling the cutter mechanism. <P>SOLUTION: This cutter mechanism includes a platen roller 9 for transporting roll paper 5, and an automatic cutter 20 having a cutting cutter blade 22 and a receiving cutter blade 21 which are placed at an upstream side in the transporting direction of the platen roller 9. The automatic cutter 20 performs dotted line cutting of the roll paper 5 by using a groove for dotted line cutting formed on the receiving cutter blade 21. The platen roller 9 transports the roll paper 5 cut into a cut piece side and a continuous paper side in the dotted line cutting by the automatic cutter. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cutter mechanism for cutting continuous paper, a printer including the cutter mechanism, and a method for controlling the cutter mechanism.

  The following is known as an auto cutter for cutting continuous paper in a printer (see Patent Document 1). As shown in FIG. 9, the inkjet-type roll paper printer 1000 with an auto cutter described in Patent Document 1 is a long recording paper (continuous paper) 2000a (indicated by a thick chain line in the figure). Has a roll paper storage unit 300 in which roll paper 2000 having a configuration in which the paper is rolled up is stored. The long recording paper 2000a fed out from the roll paper 2000 of the roll paper storage unit 300 is pulled out obliquely and then bent by the curved paper feed guide 400, and then the conveyance path 500 extends in the horizontal direction. It is transported along (the same path as the one-dot chain line indicating the recording paper 2000a) and discharged from the discharge port 700 formed in the printer case 600.

  A portion of the conveyance path 500 extending in the horizontal direction is located immediately above the roll paper storage unit 300, and the inkjet head 800 and the platen 900 are arranged to face each other with a certain gap on the conveyance path portion. A printing position 190 of the inkjet head 800 is defined by the platen 900. The inkjet head 800 is mounted on the carriage 110, and the carriage 110 is reciprocated in the printer width direction by the carriage motor 130 along the carriage guide shaft 120.

  An upstream paper feed roller 140 is disposed on the upstream side of the inkjet head 800 in the transport path 500, and the upstream paper feed roller 140 is rotationally driven by a paper feed motor 150. A presser roller 160 is pressed against the upstream paper feed roller 140 so as to be rotated. A downstream side paper feed roller 170 that rotates in synchronization with the upstream side paper feed roller 140 is disposed on the downstream side of the ink jet head 800, and the presser roller 180 follows the downstream side paper feed roller 170. It is pressed against.

  An auto cutter 200 is disposed in the vicinity of the discharge port 700, and the leading end portion of the recording paper 2000a after printing is cut in the width direction at the auto cut position 200A. The auto cutter 200 has a fixed blade 210 disposed in an upward posture in the printer width direction on the lower side of the conveyance path 500, a movable blade 220 disposed in a downward posture in the printer width direction on the upper side of the conveyance path 500, And a movable blade drive mechanism 240 having a cutter motor 230.

  The auto cutter 200 is a scissors type, and the movable blade 220 pivots up and down around one end in the printer width direction by the rotational force of the cutter motor 230. When the movable blade 220 moves, the crossing position of the fixed blade 210 with the cutting edge moves from one end in the printer width direction to the other end, and the portion of the recording paper 2000a positioned therebetween is cut in the width direction. . On the downstream side of the auto cutter 200, a cutting blade 250 for manual cutting is horizontally arranged in a downward posture in the printer width direction. By pressing the recording paper 2000a against the cutting blade 250 and pulling the recording paper 2000a obliquely upward in this state, the recording paper 2000a can be cut in the width direction at the manual cutting position 250A.

  Here, a paper pressing member 260 is disposed in the auto cutter 200. The paper pressing member 260 moves in a vertical direction from a retracted position 260A that is spaced upward from the conveying path 500 to a paper pressing position 260B indicated by an imaginary line pressed against a guide 270 disposed below the conveying path 500. Is possible. The movement of the paper pressing member 260 is performed by the movable blade driving mechanism 240.

  Next, the drive control unit 3000 of the roll paper printer 1 controls the drive of each unit based on a command from a host device such as a computer system (not shown). In the printing operation, the paper feed motor 150 is driven and the upstream paper feed roller 140 and the downstream paper feed roller 170 are rotationally driven to carry the recording paper 2000a. In addition, while driving the carriage motor 130 to move the inkjet head 800 in the printer width direction, the inkjet head 800 is driven to perform printing on the surface of the recording paper 2000a. The conveyance of the recording paper 2000a and the printing operation are performed alternately.

  After printing, the auto cutter 200 is driven to cut the recording paper 2000a. As a result, a receipt, a ticket, and the like having a predetermined length obtained by cutting the recording paper 2000a are issued from the discharge port 700. When the operation motor that does not cut by the auto cutter 200 is selected, the user grasps the recording paper 2000a discharged from the discharge port 700 by a predetermined length after the printing is completed, and the cutting blade 250 for manual cutting. By pulling the recording paper 2000a in the pressing direction, the recording paper 2000a can be cut by the cutting blade 250 to obtain a receipt having a predetermined length.

  The auto cutter 200 described in Patent Document 1 is arranged on the discharge port side (paper feed downstream side) of the continuous paper after printing with respect to the print head 800 facing the platen 900. The printing process in the printer in which the auto cutter 200 is formed on the downstream side with respect to the print head 800 will be described in more detail with reference to FIG. FIG. 10 is a schematic diagram of a transport path when the transport path is formed in a substantially vertical direction, unlike the transport path 500 of the printer of Patent Document 1.

  As shown in FIG. 10, the auto cutter 20 is disposed on the downstream side in the paper feeding direction with respect to the print head 8 facing the platen roller 9. When the manual cutter 25 is arranged further downstream of the auto cutter 20 and cutting by the auto cutter 20 is not performed, the user grasps the roll paper discharged from the discharge port after the printing is completed, and continuously by the manual cutter 25. The paper 5 is cut and a receipt having a predetermined length is output.

  In the arrangement of the auto cutter shown in FIG. 10, since the auto cutter 20 is arranged on the downstream side from the print head 8, the next printing is performed between the print center position and the auto cutter position as shown in FIG. The continuous paper is wasted for the length X. That is, in order to automatically cut ABCD... After printing ABCD. When the next receipt is printed after the paper is fed, the continuous paper is wasted for the length X.

JP 2009-101617 A

  In order to solve such a problem, as shown in FIG. 1, it is conceivable to arrange the auto cutter 20 on the upstream side in the paper feeding direction with respect to the print head 8 facing the platen roller 9. A driven roller (not shown) is provided at a position facing the platen roller 9 and not interfering with the print head 8, and the roll paper 5 is sandwiched and conveyed together with the platen roller 9 to be driven. In the arrangement of the auto cutter shown in FIG. 1, since auto cut can be executed without feeding paper after printing, as shown in FIG. 2, continuous paper for a length X between the print center position and the auto cut position is obtained. It becomes possible to eliminate waste.

  However, in the arrangement of the auto cutter in FIG. 1, there is no paper feed roller on the upstream side of the print head 8, so the roll paper 5 after printing cannot be discharged. If a paper feed roller is disposed on the upstream side of the print head 8, the cut paper is held between the paper feed rollers and is difficult to take out, and the apparatus becomes large. Further, when the paper is completely cut, the continuous paper side is cut off and separated from the platen roller 9, so that the roll paper 5 to be printed next cannot be fed to the printing start position.

  The present invention has been made to solve the above problems, eliminates the waste of the length X between the print center position and the auto cut position, and easily discharges the continuous paper after printing and cutting, An object of the present invention is to provide a cutter mechanism capable of smoothly realizing paper feeding to a printing start position, a printer including the cutter mechanism, and a control method of the cutter mechanism.

The cutter mechanism of the present invention that can solve the above-mentioned problems includes a roller that conveys continuous paper, and a cutter that has a movable blade and a fixed blade disposed on the upstream side in the conveyance direction of the roller, and at least the movable The cutter cuts the continuous paper partly by a notch formed on one of the blade and the fixed blade, and the roller removes continuous paper partly cut to the cut piece side and the continuous paper side by the cutter. , And transport together.
According to the above configuration, since the cutter is disposed on the upstream side of the roller, when this roller is used as a platen roller that is disposed to face the print head, as described above, it is between the print center position and the cutter blade. The waste of the length X can be eliminated. Further, the continuous paper is partially cut by the notch formed in the cutter and is not completely cut. For this reason, it can be easily discharged by the roller, and the paper feeding to the printing position for the next printing can be realized smoothly.

Further, in the cutter mechanism, it is preferable that the movable blade moves up to the depth of the notch with respect to the fixed blade.
According to the above configuration, by moving the movable blade until it reaches the depth of the notch, it is possible to leave a portion of the continuous paper positioned at the notch without cutting, so partial cutting is possible. Can be realized. Moreover, a dotted line cut is realizable by providing a some notch part.

In the cutter mechanism, the movable blade is a round blade, the notch is a slit formed in the round blade, and the round blade moves in a direction orthogonal to the conveyance direction of the continuous paper. However, it is preferable to partially cut the continuous paper.
According to the said structure, a dotted line cut is realizable by the slit formed in the round blade which moves while rotating.

Moreover, the said cutter mechanism WHEREIN: It is preferable to provide another cutter which cut | disconnects the said continuous paper completely in the downstream of the conveyance direction of the said roller.
According to the said structure, since the cutter which completely cuts apart from the cutter which carries out partial cutting is also provided, two cutters can be used properly according to a use. For example, if it is a case where a coupon is printed next to a receipt, a partial cut is performed after the receipt is printed. it can.

In addition, the present invention that can solve the above-described problems is a printer including any one of the cutter mechanisms described above, including a print head that prints on the continuous paper, the roller being a platen roller, and the print head Is a thermal head in a position facing the platen roller, and the platen roller sandwiches and transports the thermal head and the continuous paper.
According to the said structure, since the cutter is provided with the cutter mechanism arrange | positioned in the upstream of a platen roller, the waste of the length X between the printing center position by a thermal head and a cutter blade can be eliminated. Further, the continuous paper is partially cut by the notch formed in the cutter and is not completely cut. For this reason, it is possible to provide a printer that can be easily discharged by sandwiching and transporting continuous paper by a thermal head and a platen roller, and can smoothly feed paper to a printing position for the next printing. it can.

Further, the present invention that can solve the above-mentioned problems is a roller that conveys continuous paper, and is arranged on the upstream side in the conveyance direction of the roller, and at least one of the movable blade and the fixed blade has a notch A method of controlling the cutter mechanism, comprising: a step in which the roller conveys the continuous paper in a direction opposite to a conveyance direction to loosen; and the cutter fixes the movable blade in the fixed direction. Moving the blade to the blade side, partially cutting the continuous paper into the cut piece side and the continuous paper side, and the step of conveying the continuous paper that the roller is partially cut into the cut piece side and the continuous paper side by the cutter. , Including.
According to the above configuration, the continuous paper is transported in the reverse direction and slackened so that when the movable blade is moved with respect to the fixed blade, the continuous paper is pushed into the notch by the movable blade. As a result, it is possible to prevent the continuous paper from being pushed by the movable blade, and to prevent the continuous paper from being displaced when the continuous paper is pushed by the tension. A mechanism control method can be provided.

Moreover, it is a control method of the said cutter mechanism, Comprising: In the step which the said cutter performs a partial cut, it is preferable that the said movable blade moves to the depth of the said notch part, and performs a partial cut.
According to the above configuration, by moving the movable blade until it reaches the depth of the notch, it is possible to leave a portion of the continuous paper positioned at the notch without cutting, so partial cutting is possible. Can be realized.

Further, in the method for controlling the cutter mechanism, in the step in which the roller conveys the continuous paper in the direction opposite to the conveyance direction, the conveyance amount in the reverse direction is approximately twice the movement amount of the movable blade. Preferably there is.
According to the above configuration, when the movable blade is moved to the fixed blade by conveying the continuous paper in the reverse direction by a conveyance amount corresponding to approximately twice the movement amount of the movable blade, the continuous paper is cut out. Enough slack to push into. In addition, since the movable blade is moved before reaching the depth of the notch, the continuous paper can be conveyed in the reverse direction by a conveyance amount necessary for loosening the continuous paper, which is a conveyance amount that is approximately twice the movement amount. In this case, it is possible to cut a part of the continuous paper located at the cut-out portion without cutting it, so that a partial cut can be realized.

It is a schematic diagram which shows the arrangement | positioning relationship of the thermal head and auto cutter in the conveyance path of the thermal printer of this embodiment. It is a schematic diagram which shows the relationship between the printing center position and auto cut position in the printing result of roll paper. It is the figure which showed the process in which a roll paper is cut with a dotted line with an auto cutter. It is a flowchart for demonstrating the dotted line cutting process of roll paper. It is a schematic diagram which shows the state in which the slack was formed in the auto cut position. It is a schematic diagram which shows the arrangement | positioning relationship between a thermal head and two auto cutters. It is a flowchart for demonstrating switching operation | movement of a dotted line cut and a full cut. It is a figure which shows an example of the printed matter printed according to the flowchart of FIG. It is a figure which shows schematic structure of the conventional roll paper printer with an auto cutter. It is a schematic diagram which shows the arrangement | positioning relationship of the thermal head and auto cutter in the conveyance path of the conventional printer with an auto cutter. It is a schematic diagram which shows the relationship of the length X between the printing center position and auto cut position in the conventional printed matter.

  Hereinafter, an embodiment of a cutter mechanism of the present embodiment, a printer including the cutter mechanism, and a control method of the cutter mechanism will be described. Hereinafter, a thermal printer will be described as an example.

  As shown in FIG. 1, a platen roller 9 that conveys the roll paper 5 while being sandwiched between the thermal head 8 and a conveyance direction of the platen roller 9 (arrow A) And a cutter mechanism having an auto cutter 20 arranged on the upstream side.

  The thermal printer includes a thermal head 8 disposed at a position facing the platen roller 9. Further, a manual cutter 25 is disposed on the downstream side of the thermal head 8. When the operation mode in which the cutting by the auto cutter 20 is not performed is selected, the user grasps the roll paper 5 discharged from the discharge port after the printing is completed, and cuts the roll paper 5 by the manual cutter 25 to have a predetermined length. A roll of paper can be obtained.

  In the auto cutter 20 of the present embodiment, a plurality of grooves (notches) are formed on one of the receiving cutter blade (fixed blade) and the cutting cutter blade (movable blade).

  As shown in FIG. 3, the auto cutter 20 mounted on the thermal printer of the present embodiment has a plurality of grooves 21 a formed on the receiving cutter blade 21, and the cutting cutter blade 22 has a straight blade. . In addition, you may form the blade in which the some groove | channel 21a is formed in the cutting cutter blade 22 reverse to the above.

  FIGS. 3A, 3 </ b> B, and 3 </ b> C are diagrams showing a process of a dotted line cut (partial cut) of the roll paper 5. 3A, 3B, and 3C, when the rotary gear 22b is rotated by a motor that is a driving source (not shown), the connection point 22d fixed to the printer body slides in the connection point moving groove 22c. Thus, the cutting cutter blade 22 rotates around the fulcrum 22a. When the cutting cutter blade 22 rotates and moves to the receiving cutter blade 21 side, the two blades are engaged to cut the roll paper 5 with a dotted line.

  FIG. 3A shows a state before partial cutting. FIG. 3B shows a state in which the dotted line is being cut, and the roll paper 5 is not cut by the plurality of grooves 21 a provided on the receiving cutter blade 21, but is cut at a portion other than the groove and grooved by the receiving cutter blade 21. 21a shows a state of being pushed by the cutting cutter blade 22. At this time, the cutting cutter blade 22 moves with respect to the receiving cutter blade 21 before reaching the depth of the groove 21a. If the cutting cutter blade 22 is moved to a position greater than or equal to the depth of the groove 21a, the roll paper 5 is completely cut.

  FIG. 3C shows a state after the dotted line cut, in which the cutting cutter blade 22 is released from the meshing state with the receiving cutter blade 21 by the rotating gear 22b. In the roll paper 5, uncut connection portions 5a and cut cut portions 5b are alternately formed and cut into dotted lines. That is, the roll paper 5 is partially cut on the cut piece side and the continuous paper piece side.

  Even when the auto cutter 20 is operated immediately after printing with the thermal head 8, the dotted line cut in which the connection parts 5 a and the cut parts 5 b that are not cut are alternately formed is performed on the roll paper 5. This is because the roll paper 5 is fed to the printing start position by the platen roller 9 for the next printing. That is, by cutting the dotted line instead of completely cutting, it is possible to maintain the tension that allows the printed roll paper 5 and the unprinted roll paper 5 to be the next printed material to be conveyed together. It becomes possible to carry together the printed roll paper 5 that has been dotted and cut, and the unprinted roll paper 5 that will be the next printed matter.

  The thermal printer has a control unit including a CPU (not shown), a nonvolatile storage unit, and a main storage unit that can be directly accessed by the CPU. The nonvolatile storage unit stores a control program for controlling various operations of the thermal printer, various setting values of the thermal printer, and the like.

  The CPU executes a control program or the like stored in the non-volatile storage unit, controls the operation of the thermal printer, calculates various data input from each unit connected to the control unit, and outputs the calculation result. Output to each part. Hereinafter, a series of processes including a printing process, a roll paper dotted line cut process, and a roll paper transport process executed in response to an instruction from the control unit will be described with reference to FIGS. 4 and 5.

  First, for example, one sheet of receipt is printed on the roll paper 5 by the thermal head 8 in response to an instruction from the control unit. (Step S1). Next, as shown in FIG. 5, the platen roller 9 is rotated in the direction opposite to the normal paper feeding direction (arrow B) to form a slight slack 5 c on the roll paper 5 at the auto-cut position 50. (Step S2).

  At this time, the conveyance amount of the roll paper 5 by the reverse rotation of the platen roller 9 is set to be approximately twice the movement amount of the cutting cutter blade 22. Thereby, when the cutting cutter blade 22 is received and moved to the cutter blade 21, a slack 5c sufficient to push the roll paper 5 into the dotted line cutting groove 21a can be provided. Further, since the cutting cutter blade 22 is moved up to the depth of the groove 21a, if the roll paper 5 is conveyed in the reverse direction by a conveyance amount approximately twice the movement amount, the roll paper 5 positioned in the groove 21a. Since it can be left uncut without cutting a part of, a dotted line cut can be realized. Since no tension is applied when the roll paper 5 is pushed into the dotted line cutting groove 21a, the position does not shift.

  After the slack 5c is formed as shown in FIG. 5, the cutting cutter blade 22 of the auto cutter 20 is operated to cut the roll paper 5 with a dotted line immediately after the final printing line. (Step S3). Next, the platen roller 9 is rotated forward (arrow C), and the roll paper 5 is conveyed to the print start position 60 of the thermal head 8 in preparation for the next printing. (Step S4).

Next, a modification of the thermal printer of this embodiment will be described. The thermal printer in the modification includes two auto cutters on the conveyance path.
As shown in FIG. 6, on the paper transport path of the thermal printer, there is a platen roller 9 that transports the roll paper 5 while sandwiching it with the thermal head 8, and on the upstream side in the transport direction (arrow A) of the platen roller 9. A cutter mechanism having a first auto cutter 20 disposed therein is provided.

  The thermal printer includes a thermal head 8 disposed at a position facing the platen roller 9. Further, a second auto cutter 30 is disposed on the downstream side of the thermal head 8, and a manual cutter 25 is disposed further on the downstream side of the second auto cutter 30. When the operation mode in which the cutting by the auto cutters 20 and 30 is not performed is selected, the user grasps the roll paper 5 discharged from the discharge port after the printing is finished, and cuts the roll paper 5 by the manual cutter 25. A roll paper piece having a predetermined length can be obtained.

  The first auto cutter 20 has the same configuration as that described in the above embodiment. That is, as shown in FIG. 3, a plurality of grooves 21 a are formed in the receiving cutter blade 21, and the cutting cutter blade 22 is provided with a straight blade, and the roll paper 5 is cut by a dotted line at the automatic cutting position 70. .

  On the other hand, the second auto cutter 30 has both the receiving cutter blade 31 and the cutting cutter blade 32 having straight blades, and completely cuts the roll paper 5 at the auto-cut position 90, that is, full cuts.

  Thus, since the thermal printer in the modified example includes the two auto cutters 20 and 30, it is possible to selectively execute whether the roll paper 5 is cut with a dotted line or a full cut.

  The selection of the dotted line cut and the full cut can be arbitrarily set by the user using a dip switch, a memory switch, or the like provided in the thermal printer. Also, a dotted line cut and a full cut can be selected by a program command in accordance with the printing application.

  Note that the thermal printer in the modification also includes a control unit including a CPU, a nonvolatile storage unit, and a main storage unit that can be directly accessed by the CPU, as in the above embodiment.

  Next, processing for selectively operating the two auto cutters will be described with reference to the flowchart of FIG.

  First, the CPU extracts data from the reception buffer (step S11), and determines whether or not the extracted reception data is a cut command. (Step S12). If it is determined that the command is a cut command (step S12: Yes), the setting of the cut operation stored in advance in the nonvolatile storage unit is read out. (Step S13).

  It is determined whether or not the read cut operation setting is a dotted line cut (step S14). If it is determined that the cut is a dotted line cut (step S14: Yes), the automatic cut position 70 (upstream of the thermal head 8). Then, the dotted line cut is executed (step S15). On the other hand, when it is determined that the setting of the cutting operation is not a dotted line cut (step S14: No), the paper is fed by a distance Y from the printing start position 80 to the automatic cutting position 90 in the thermal head 8 as shown in FIG. (Step S16). After the paper feed, a full cut is executed at the auto cut position 90 (downstream of the thermal head 8). (Step S17).

  In step S12, if the received data is not a cut command (step S12: No), it is determined whether or not the received data is a setting command or an operation setting value for setting a cut operation (step S18). ). When it is data for setting the cutting operation (step S18: Yes), the setting of the cutting operation is stored in the nonvolatile storage unit (step S19). On the other hand, when the data is not data for setting the cutting operation (step S18: No), it is determined that the received data is print data, and the printing process is executed based on the received data (step S20).

  The CPU determines whether or not data exists in the reception buffer after the processes of step S15, step S17, and step S20 (step S21). If there is data in the reception buffer (step S21: Yes), the above procedure is repeatedly executed until the determination in step S21 becomes No. If there is no data in the reception buffer (step S21: No), the process is terminated. To do.

  An example of a printed matter printed according to the flowchart of FIG. 7 is shown in FIG. In the printed matter of FIG. 8, a dotted line cut is executed under the final print line on the print surface A, and a full cut is executed under the final print line on the print surface B. Such a form is particularly effective when, for example, a coupon is printed on a receipt.

  In addition, in the said embodiment and modification, the some groove | channel 21a was formed in the receiving cutter blade 21 of the auto cutter 20, and the cutting cutter blade 22 demonstrated the structure provided with the linear blade. However, realizing the dotted line cut is not limited to such an embodiment. Specifically, a round blade having a plurality of slits is adopted as a cutting cutter blade that is a movable blade, and the roll paper 5 is moved by moving the round blade in a direction perpendicular to the conveyance direction of the roll paper 5. Can be cut with a dotted line. In this case, a linear receiving blade may be used as the receiving cutter blade that is a fixed blade.

  According to the above embodiment, since the auto cutter 20 is disposed on the upstream side of the platen roller 9, waste of the length X between the print center position and the auto cut position shown in FIG. 11 can be eliminated. . Further, the roll paper 5 is cut with a dotted line by the groove 21a formed in the auto cutter 20, and is not completely cut. For this reason, the platen roller 9 can easily discharge the paper to the discharge port, and the paper feeding to the printing start position for the next printing can be realized smoothly.

  Further, by moving the cutting cutter blade 22 to the depth before reaching the groove 21a, it is possible to leave a part of the roll paper located in the groove 21a without cutting, thereby realizing a dotted line cut. be able to. Further, by providing the plurality of grooves 21a, it is possible to realize a dotted line cut that is easy for a user to cut by hand.

  Moreover, according to the said modification, since the 2nd auto cutter 30 which carries out a full cut is also provided separately from the 1st auto cutter 20 which carries out a dotted line cut, two auto cutters 20 and 30 are used according to a use. Can be used properly. As shown in FIG. 8, the receipt and coupon are in a set when a dotted line cut is performed after executing the receipt printing on the printing surface A, and then a full cut is performed after executing the coupon printing on the printing surface B. Can be output.

5: roll paper (continuous paper), 5a: connecting part, 5b: cutting part, 5c: slack, 8: thermal head, 9: platen roller, 20: (first) auto cutter, 21: receiving cutter blade (fixed) Blade), 21a: groove for cutting a dotted line, 22: cutting cutter blade (movable blade), 25: manual cutter, 30: second auto cutter, 50, 70, 90: auto cut position, 60, 80: printing start position .

Claims (8)

A roller for conveying continuous paper;
A movable blade and a cutter having a fixed blade disposed on the upstream side in the conveying direction of the roller,
The cutter partially cuts the continuous paper by a notch portion formed on at least one of the movable blade and the fixed blade,
The said roller conveys the continuous paper partially cut into the cutting piece side and the continuous paper side with the said cutter, The cutter mechanism characterized by the above-mentioned.   The cutter mechanism according to claim 1, wherein the movable blade moves with respect to the fixed blade before reaching the depth of the notch. The movable blade is a round blade, and the notch is a slit formed in the round blade,
2. The cutter mechanism according to claim 1, wherein the round blade partially cuts the continuous paper while moving in a direction orthogonal to a conveyance direction of the continuous paper.   The cutter mechanism according to any one of claims 1 to 3, further comprising another cutter that completely cuts the continuous paper on the downstream side in the conveyance direction of the roller. A print head for printing on the continuous paper;
The roller is a platen roller, and the print head is a thermal head in a position facing the platen roller;
The printer having a cutter mechanism according to any one of claims 1 to 4, wherein the platen roller sandwiches and conveys the thermal head and the continuous paper. A roller for conveying continuous paper;
It is arranged on the upstream side in the conveyance direction of the roller, and is a method for controlling a cutter mechanism comprising a cutter having a notch in at least one of a movable blade and a fixed blade,
The roller transports the continuous paper in a direction opposite to the transport direction to loosen the paper;
The cutter moves the movable blade toward the fixed blade, and partially cuts the continuous paper into a cut piece side and a continuous paper side;
A step in which the roller conveys the continuous paper partially cut by the cutter into the cut piece side and the continuous paper side,
A method for controlling a cutter mechanism, comprising:   The method for controlling a cutter mechanism according to claim 6, wherein in the step of partially cutting the cutter, the movable blade moves to the depth of the notch and performs partial cutting.   In the step of transporting the continuous paper in the direction opposite to the transport direction by the roller, the transport amount in the reverse direction is approximately twice the movement amount of the movable blade. The cutter mechanism control method described.

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