JP2014145726A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer capable of cutting a printed matter even when it is lift up or pulled down.SOLUTION: The printer 50 includes: a first cutter blade 71 fixed and disposed at a position facing the front side of receipt paper R; and a second cutter blade 72 fixed and disposed at a position facing the rear side of the receipt paper R. Therefore, even when the receipt paper R is pulled in either direction of the front side and rear side, the cutter blade exists in that direction. As a result, it can be prevented that the receipt paper R breaks without being cut.

Description

  The present invention relates to a printing apparatus.

  For example, in a printing apparatus that manually pulls and cuts a printed material such as a label or a receipt as disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2003-028704), the user moves the printed material up or down. Whether to pull in the direction depends on the user's familiarity or empirical rule. Therefore, it is assumed that the printed material is torn by pulling in the direction where the cutter blade is not attached.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a printing apparatus that can cut a printed material even when it is lifted upward or pulled downward.

  A printing apparatus according to a first aspect of the present invention is a printing apparatus that issues a printed material, and includes a first cutter blade that is fixedly disposed at a position facing the surface side of the printed material, and the printed material. The 2nd cutter blade fixedly arrange | positioned in the position which opposes the back surface side.

  In this printing apparatus, even if the printed material is pulled in either the front side or the back side, the cutter blade exists in that direction, so that the printed material can be prevented from being broken without being cut.

  A printing apparatus according to a second aspect of the present invention is the printing apparatus according to the first aspect, and further includes a printing unit that prints on an object to be printed. The distance from the exit of the printing unit to each of the first cutter blade and the second cutter blade is equal.

  When the distance from the exit of the printing unit to each of the first cutter blade and the second cutter blade is not equal, when the next printing object is fed out after cutting the printing object, the distance from the edge of the printing object to the printing area The margin will vary depending on the cutter blade used.

  In this printing apparatus, since the distance from the exit of the printing unit to each of the first cutter blade and the second cutter blade is equal, the upper and lower margin widths of the printing object are constant, and unnecessary margins are eliminated. In addition to being able to look good.

  A printing apparatus according to a third aspect of the present invention is the printing apparatus according to the first aspect, in which the object to be printed is a label having a glue layer on the back side, and the second cutter blade is provided with a non-adhesive coating. Has been.

  When the label is cut from the back side with the glue layer, the end of the unprinted label does not stick to the second cutter blade after cutting, and the label is wound into a cylinder when it is printed and fed out End up.

  In this printing apparatus, since the non-adhesive coating is applied to the second cutter blade, it is possible to prevent the back side of the label from adhering to the second cutter blade.

  In the printing apparatus according to the present invention, since the cutter blade is present in either direction of pulling the printed material in the front side or the back side, it is possible to prevent the printed material from being broken without being cut. it can.

The perspective view seen from the operation part side of the weighing machine carrying the printer concerning one embodiment of the present invention. The perspective view seen from the customer side liquid crystal display part side of the weighing machine carrying the printing device concerning one embodiment of the present invention. The control block diagram of a weighing machine. Sectional drawing of a printing apparatus. Enlarged perspective view around the discharge port of the printer The side view around the receipt paper R in the last time and this time under the first cutting condition. The side view of the periphery of the receipt paper R in the last time and this time under the second cutting condition. The side view of the periphery of the receipt paper R in the last time and this time under the third cutting condition. The side view of the periphery of the receipt paper R in the last time and this time under the fourth cutting condition. The top view of the receipt paper R cut | disconnected on the 1st cutting conditions in case a return conveyance distance is constant. The top view of the receipt paper R cut | disconnected on the 2nd cutting conditions in case a return conveyance distance is constant. The top view of the receipt paper R cut | disconnected on the 3rd cutting conditions in case a return conveyance distance is constant. The top view of the receipt paper R cut | disconnected on the 4th cutting conditions in case a return conveyance distance is constant. The chart of the main routine of the control flow which shows the control content of a printing apparatus. 7 is a control flow subroutine chart showing control contents of the printing apparatus. Sectional drawing of the printing apparatus which concerns on 2nd Embodiment. Enlarged perspective view around the discharge port of the printer The side view around the receipt paper R in the last time and this time under the first cutting condition. The side view of the periphery of the receipt paper R in the last time and this time under the second cutting condition. The side view of the periphery of the receipt paper R in the last time and this time under the third cutting condition. The side view of the periphery of the receipt paper R in the last time and this time under the fourth cutting condition. The top view of the receipt paper R cut | disconnected on the 1st cutting conditions in case a return conveyance distance is constant. The top view of the receipt paper R cut | disconnected on the 2nd cutting conditions in case a return conveyance distance is constant. The top view of the receipt paper R cut | disconnected on the 3rd cutting conditions in case a return conveyance distance is constant. The top view of the receipt paper R cut | disconnected on the 4th cutting conditions in case a return conveyance distance is constant. The side view of the periphery of the receipt paper R immediately after cut | disconnecting with the 1st cutter blade. The side view of the periphery of the receipt paper R conveyed in the return direction by a distance DC1 prior to printing. FIG. 4 is a side view of the periphery of the receipt paper R when printing is performed and transported for the printing area. The side view of the periphery of the receipt paper R conveyed in the forward direction by the distance DC2. The side view of the periphery of the receipt paper R immediately after cut | disconnecting with the 2nd cutter blade. The side view of the periphery of the receipt paper R conveyed in the return direction by a distance DC1 prior to printing. FIG. 4 is a side view of the periphery of the receipt paper R when printing is performed and transported for the printing area. The side view of the periphery of the receipt paper R conveyed in the forward direction by the distance DC2.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.

<First Embodiment>
(1) Configuration of Weighing Machine 10 FIG. 1A is a perspective view seen from the operation unit side of the weighing machine 10 equipped with the printing apparatus 50 according to the first embodiment of the present invention. FIG. 1B is a perspective view of the weighing machine 10 equipped with the printing device 50 according to the first embodiment of the present invention as viewed from the customer-side liquid crystal display unit side.

  1A and 1B, the weighing machine 10 includes a main body casing 21, a weighing unit 23, an operation unit 25, a customer-side liquid crystal display unit 27, a printing device 50, and a control unit 40 (see FIG. 2).

  The measuring unit 23 is disposed on the upper surface of the main body casing 21, and the operation unit 25 is provided on the front surface of the main body casing 21. The customer-side liquid crystal display unit 27 is disposed on the opposite side of the operation unit 25 with the main body casing 21 interposed therebetween.

  Further, the printing apparatus 50 is disposed on the right side of the main casing 21 when the operation unit 25 is viewed from the front. The printing apparatus 50 is provided with a discharge port 50a through which printed labels or receipts are discharged. Label paper or receipt paper is stored inside the discharge port 50a, and the label paper or receipt paper is transported on the transport path, printed by the printing mechanism, and then discharged from the discharge port 50a. .

  FIG. 2 is a control block diagram of the weighing machine 10. In FIG. 2, the control unit 40 includes a CPU 41 and a memory 43, and is disposed inside the main body casing 21 or the operation unit 25. In the present embodiment, the control unit 40 is disposed inside the operation unit 25 so that signals can be transmitted to and received from the weighing unit 23, the operation unit 25, the customer-side liquid crystal display unit 27, the printing device 50, and the sound generation unit 81. It is connected to the.

(2) Configuration of Printing Device 50 FIG. 3 is a cross-sectional view of the printing device 50. FIG. 4 is an enlarged perspective view of the periphery of the discharge port 50a of the printing apparatus 50. FIG. 3 and 4, the printing apparatus 50 includes a printing mechanism 51, a paper detection sensor 61, a first cutter blade 71, and a second cutter blade 72.

  In FIG. 3, the receipt paper R is stored in a roll shape in a storage portion (not shown), and is guided from the storage portion to the discharge port 50a through the transport path 50b.

(2-1) Printing mechanism 51
The printing mechanism 51 is disposed in the middle of the conveyance path 50b. The printing mechanism 51 includes a thermal head 53, a platen roller 55, a heat radiating plate 57, and a head pressing spring 59.

  The thermal head 53 is configured by arranging a large number of heating elements on a substrate, and prints by applying heat while in contact with the receipt paper R. The platen roller 55 conveys the receipt paper R between the thermal head 53 and the platen roller 55. The platen roller 55 is rotated by a driving force transmitted from a stepping motor 55a via a belt (not shown).

  The heat radiating plate 57 releases heat from the thermal head 53. The head pressing spring 59 presses the thermal head 53 toward the platen roller 55.

  Prior to issuing the receipt R, the control unit 40 conveys the receipt paper R by a necessary distance in the return direction via the platen roller 55, prints necessary information on the receipt paper R via the thermal head 53, and then again, The receipt paper R is conveyed by a predetermined distance in the forward direction via the platen roller 55.

(2-2) Paper detection sensor 61
The paper detection sensor 61 is a sensor that detects the end portion of the receipt paper R. Therefore, the paper detection sensor 61 is disposed in a space existing on the downstream side of the printing mechanism 51 in the transport path 50b of the receipt paper R and in a space above the discharge port 50a. Specifically, in the main body of the printing apparatus 50, the printing apparatus 50 is disposed in a space between a horizontal plane passing through the discharge port 50 a and a horizontal plane passing through the cutting edge of the second cutter blade 72.

  The paper detection sensor 61 is a reflective infrared sensor. Of course, the paper detection sensor 61 is not limited to a reflective infrared sensor, and a transmissive infrared sensor in which an issuing element and a light receiving element are combined may be selected.

  As shown in FIG. 3, since the receipt paper R is discharged obliquely upward from the discharge port 50a, the discharged receipt paper R stays in the gap between the discharge port 50a and the second cutter blade 72, and the paper detection sensor 61 Will block the front of. The sheet detection sensor 61 transmits a Lo signal to the control unit 40 when the front gap is not blocked, and transmits a Hi signal to the control unit 40 when the gap is blocked.

  If the receipt paper R issued last time is not cut, the paper detection sensor 61 is positioned in front of the paper detection sensor 61 before and after the control unit 40 transports the receipt paper R in the return direction by a necessary distance. Therefore, the signal from the sheet detection sensor 61 remains the Hi signal. Therefore, in such a case, the control unit 40 prompts the cutting of the receipt paper R that has not been cut by conveying the receipt paper R in the forward direction by the predetermined distance.

(2-3) First cutter blade 71 and second cutter blade 72
As shown in FIG. 4, the 1st cutter blade 71 and the 2nd cutter blade 72 are arrange | positioned in the vicinity of the discharge port 50a. The first cutter blade 71 is located in front of and below the discharge port 50a. The second cutter blade 72 is located in front of and above the discharge port 50a. As for the 1st cutter blade 71 and the 2nd cutter blade 72, the blade edge | tip is shape | molded by the sawtooth shape.

  Whether the user of the printing apparatus 50 pulls the receipt paper R in the vertical direction depends on the user's familiarity or experience rule, but with this configuration, the receipt paper R can be cut regardless of whether it is pulled in the vertical direction. Is done.

  When a label having a glue layer on the back side is used as paper, when the label is cut from the back side having the glue layer, the glue does not stick to the second cutter blade 72 and is printed next. The leading end of the fed label adheres to the cutting edge of the second cutter blade 72, and the subsequent portion is wound into a cylindrical shape. Therefore, in this embodiment, the non-adhesive coating is given to the 2nd cutter blade 72, and the situation where the back surface side of a label adheres to the 2nd cutter blade 72 can be prevented.

  Further, even if the cut label or the tip of the receipt paper R remains attached to the second cutter blade 72, the label or the receipt paper R is required to move in the return direction before the label or the receipt paper R is issued. Since it is only conveyed, adhesion is eliminated.

(3) Operation In the printing apparatus 50, before printing, the receipt paper R is transported in the return direction by a necessary distance, and the receipt paper is returned to the vicinity of the thermal head 53. Here, the required distance is from the first cutter blade 71 to the thermal head 53 on the assumption that at least the previous cutting is performed by the first cutter blade 71 and the next cutting is also performed by the first cutter blade 71. Is a reasonable distance.

  And the cutting conditions of the receipt paper R are the first cutting condition that the cutting is performed with the first cutter blade 71 both in the previous time and this time, the second cutting condition that the cutting is performed with the second cutter blade 72 in the previous time and this time, and the previous time The third cutting condition that the first cutter blade 71 is cut and the current time is cut by the second cutter blade 72, and the previous time is cut by the second cutter blade 72, and the current time is cut by the first cutter blade 71. The fourth cutting condition is assumed.

  FIG. 5A is a side view of the periphery of the receipt paper R in the previous and current times under the first cutting condition. FIG. 5B is a side view of the periphery of the receipt paper R in the previous and current times under the second cutting condition. FIG. 5C is a side view of the periphery of the receipt paper R in the previous and current times under the third cutting condition. FIG. 5D is a side view of the periphery of the receipt paper R in the previous and current times under the fourth cutting condition.

  FIG. 6A is a plan view of the receipt paper R cut under the first cutting condition when the return conveyance distance is constant. FIG. 6B is a plan view of the receipt paper R cut under the second cutting condition when the return conveyance distance is constant. FIG. 6C is a plan view of the receipt paper R cut under the third cutting condition when the return conveyance distance is constant. FIG. 6D is a plan view of the receipt paper R cut under the fourth cutting condition when the return conveyance distance is constant.

  As shown in FIGS. 5A to 5D and FIGS. 6A to 6D, the receipt paper R is cut by the second cutter blade 72 when lifted upward, and the first when the receipt paper R is pulled downward. Cutting with the cutter blade 71.

  As shown in FIGS. 5A to 5D and FIGS. 6A to 6D, the front end of the receipt paper R cut by the first cutter blade 71 or the second cutter blade 72 and the receipt paper R, and There are cases where there is a margin or no margin at the rear end, and this point will be described in the second embodiment as an example in which the solution is adopted.

(4) Control Flow (4-1) When Receipt Paper R Ejected Previously is Cut Next, the above operation will be described using a control flowchart from the viewpoint of control.

  FIG. 7A is a chart of the main routine of the control flow showing the control contents of the printing apparatus 50. For the sake of convenience, description will be made after the settlement of merchandise sales is completed by the salesperson's operation in the weighing machine 10.

  First, in step S1, the control unit 40 determines whether or not the merchandise sales settlement has been completed. When it is determined that the settlement has been completed, the control unit 40 proceeds to step S2, and the settlement has not been completed. When it is determined, monitoring for determining whether or not the merchandise sales settlement has been completed is performed.

  Next, in step S2, the control unit 40 stores the signal from the paper detection sensor 61, and proceeds to step S3.

  Next, in step S3, the control unit 40 conveys the receipt paper R in the return direction by a necessary distance.

  Next, in step S4, the control unit 40 determines whether or not the signal from the paper detection sensor 61 remains unchanged from the Hi signal to the Hi signal before and after the operation of returning the receipt paper R to the necessary distance. When it is determined that the signal remains unchanged, the routine proceeds to routine A, and when it is determined that the signal is not changed, the process proceeds to step S5. Here, if the signal from the paper detection sensor 61 does not change from the Hi signal to the Hi signal before and after the operation of returning the receipt paper R to the necessary distance, the receipt paper R discharged last time is not cut. Deciding.

  Next, in step S5, the control unit 40 generates print data relating to the merchandise sales, and proceeds to step S5.

  Next, in step S6, the controller 40 prints on the surface of the receipt paper R via the thermal head 53 based on the print data.

  Next, in step S7, the control unit 40 rotates the platen roller 55 and discharges the printed region of the receipt paper R from the discharge port 50a to the outside.

  Next, in step S8, the control unit 40 displays or flashes a message for preventing receipt forgetting such as “Please take a receipt” on the customer liquid crystal display unit 27. The control unit 40 may send a voice message such as “Please take a receipt” via the voice generation unit 81 together with the message.

(4-2) When Receipt Paper R Ejected Previously is not Cut FIG. 7B is a control flow subroutine chart showing the control contents of the printing apparatus 50. From this point, the control unit 40 determines that the signal from the sheet detection sensor 61 remains unchanged from the Hi signal to the subroutine A before and after the operation of returning the receipt sheet R to the necessary distance in step S4, and proceeds to subroutine A. The subsequent control will be described.

  In step S41, the controller 40 conveys the receipt paper R in the forward direction by a predetermined distance.

  Next, in step S42, the control unit 40 prompts cutting of the receipt paper R issued last time via a voice message or the customer liquid crystal display unit 27.

  Next, in step S43, the control unit 40 conveys the receipt paper R in the return direction by a necessary distance.

  Next, in step S44, the control unit 40 determines whether or not the signal from the paper detection sensor 61 has been changed from the Hi signal to the Hi signal before and after the operation of returning the receipt paper R to the necessary distance, and Hi. When it is determined that the signal remains unchanged, the process proceeds to step S45. When it is determined that the signal is not changed, the process returns to step S5 of the main routine.

  In step S45, the control unit 40 determines that the previous receipt paper R cannot be cut, and returns to step S5 of the main routine. Note that step S45 may be replaced with another process. For example, the control unit 40 may wait for a reset operation by the operator, determine whether a reset signal is input, and return to step S5 of the main routine when the reset signal is input.

(5) Features (5-1)
In the printing apparatus 50, a first cutter blade 71 fixedly disposed at a position facing the front surface side of the receipt paper R, and a second cutter blade fixedly disposed at a position facing the back surface side of the receipt paper R. 72. As a result, even if the receipt paper R is pulled in either the front side or the back side, the cutter blade exists in that direction, so that it is possible to prevent the receipt paper R from being broken without being cut.

(5-2)
In the printing apparatus, since the non-adhesive coating is applied to the second cutter blade 72, even if there is a glue layer on the back side of the paper R, it is possible to prevent a situation where the second cutter blade 72 adheres to the second cutter blade.

Second Embodiment
In the first embodiment, since the distance from the discharge port 50a to each of the first cutter blade 71 and the second cutter blade 72 is different and the transport distance in the return direction is constant, depending on which cutter blade is used. The receipt paper R is issued in one of the forms in which the margins are at the front and rear ends, the margin at one of the front and rear ends, and the margin without the margins.

  Specifically, the receipt paper R cut under the first cutting condition shown in FIG. 5A has a margin of the receipt paper R at the rear end as shown in FIG. 6A. Further, the receipt paper R cut under the second cutting condition shown in FIG. 5B has a margin of the receipt paper R at the front end as shown in FIG. 6B. In addition, the receipt paper R cut under the third cutting condition shown in FIG. 5C does not have the margin of the receipt paper R at both the front and rear ends as shown in FIG. 6C. In addition, the receipt paper R cut under the fourth cutting condition shown in FIG. 5D has margins of the receipt paper R at both the front and rear ends as shown in FIG. 6D. Please refer to [(3) Supplementary items] at the end of this document for the reason why the margins differ depending on each cutting condition.

  Issuance of receipt paper R with non-constant margins as described above can lead to wasteful consumption of receipt paper. Therefore, in the second embodiment, the margin of the receipt paper R is constant regardless of which of the first cutter blade 71 and the second cutter blade 72 is used, and from the end of the receipt paper R to the print area. The amount of label usage will be reduced.

(1) Configuration of Printing Device 50 FIG. 8 is a cross-sectional view of the printing device 50 according to the second embodiment. FIG. 9 is an enlarged perspective view of the periphery of the discharge port 50a of the printing apparatus 50. FIG. 8 and 9, the printing apparatus 50 includes a printing mechanism 51, a paper detection sensor 61, a first cutter blade 71, and a second cutter blade 72.

  In addition, since 1st Embodiment and 2nd Embodiment differ only in the 1st cutter blade 71, only the structure of the 1st cutter blade 71 and its effect are demonstrated here.

  As shown in FIGS. 8 and 9, the first cutter blade 71 is positioned in front of the discharge port 50a in the horizontal direction, and the blade tip is formed in a sawtooth shape. Moreover, as shown in FIG. 8, the cutting edge of each of the first cutter blade 71 and the second cutter blade 72 is on a circumference centered on the center of the discharge port 50a. That is, the distance from the discharge port 50a to the cutting edge of the first cutter blade 71 and the cutting edge of the second cutter blade is the same. Accordingly, the receipt paper R is cut regardless of whether it is pulled up or down, and the margin after cutting is the same regardless of which of the first cutter blade 71 and the second cutter blade 72 is used.

  Next, the effects of the above configuration will be described with reference to FIGS. 10A to 10D and FIGS. 11A to 11D. The cutting conditions of the receipt paper R are the same as in the first embodiment, and the first cutting condition that the cutting is performed with the first cutter blade 71 in both the previous time and this time, and the second cutting blade 72 is cut in both the previous time and this time. The second cutting condition, the third cutting condition that the previous time is cut by the first cutter blade 71, and the current time is cut by the second cutter blade 72, and the previous time is cut by the second cutter blade 72, and this time is the first cutting time. A fourth cutting condition of cutting with one cutter blade 71 is assumed.

  FIG. 10A is a side view of the periphery of the receipt paper R in the previous and current times under the first cutting condition. FIG. 10B is a side view of the periphery of the receipt paper R in the previous and current times under the second cutting condition. FIG. 10C is a side view of the periphery of the receipt paper R in the previous and current times under the third cutting condition. FIG. 10D is a side view of the periphery of the receipt paper R in the previous and current times under the fourth cutting condition.

  FIG. 11A is a plan view of the receipt paper R cut under the first cutting condition when the return conveyance distance is constant. FIG. 11B is a plan view of the receipt paper R cut under the second cutting condition when the return conveyance distance is constant. FIG. 11C is a plan view of the receipt paper R cut under the third cutting condition when the return conveyance distance is constant. FIG. 11D is a plan view of the receipt paper R cut under the fourth cutting condition when the return conveyance distance is constant.

  In addition, the blank part surrounded by the dotted line drawn at the front end and / or the rear end of the print area in FIGS. 11A to 11B is a part left as a blank in the first embodiment.

  The receipt paper R cut under the first cutting condition shown in FIG. 10A has a margin at the rear end in the first embodiment (see FIG. 6A), but in the second embodiment, the margin as shown in FIG. 11A. Is gone. Further, the receipt paper R cut under the second cutting condition shown in FIG. 10B has a margin at the front end in the first embodiment (see FIG. 6B), but in the second embodiment as shown in FIG. 11B. The margin is gone. In addition, the receipt paper R cut under the third cutting condition shown in FIG. 10C has no margin in the first embodiment (see FIG. 6C), but the margin is also shown in FIG. 11C in the second embodiment. Absent. Further, the receipt paper R cut under the fourth cutting condition shown in FIG. 10D has margins at the front and rear ends in the first embodiment (see FIG. 6D), but in the second embodiment as shown in FIG. 11D. There are no margins at both front and rear. In other words, unnecessary margins are reduced.

(2) Features In the printing apparatus 50, since the distance from the discharge port 50a to each of the first cutter blade 71 and the second cutter blade 72 is equal, the upper and lower margin widths of the receipt paper R are constant, which is useless. The white space can be eliminated and it looks good.

(3) Supplement: Cause of multiple forms of margins on receipt paper R In this embodiment, the distance from the discharge port 50a to the first cutter blade 71 and the second cutter blade 72 is different, so which cutter blade is used. The receipt paper R is issued in one of the forms in which the margin is at the front and rear ends, the margin at either the front or rear end, or the margin is not present.

  The reason why the presence / absence of the margin is different depending on the cutting condition as described above is that the distance for transporting the receipt paper R in the return direction prior to printing is different from the distance for transporting the receipt paper R in the forward direction after printing.

  12A is a side view of the periphery of the receipt paper R immediately after being cut by the first cutter blade 71. FIG. In FIG. 12A, since the receipt paper R is immediately after being cut by the first cutter blade 71, the tip of the receipt paper R corresponds to the cutting edge position of the first cutter blade 71.

  Further, since the distances from the discharge port 50a to the first cutter blade 71 and the second cutter blade 72 are different from each other, for convenience of explanation, they are set to d1, d2, and d1 <d2, respectively. Further, D is a distance from the discharge port 50a to the thermal head 53.

  Here, assuming that the distance DC1 from the first cutter blade 71 to the thermal head 53 and the distance DC2 from the second cutter blade 72 to the thermal head 53 are DC1 = d1 + D, DC2 = d2 + D, and naturally DC1 <DC2. is there.

  FIG. 12B is a side view of the periphery of the receipt paper R conveyed in the return direction by a distance DC1 prior to printing. In FIG. 12B, the distance for transporting the receipt paper R in the return direction prior to printing is set to DC1 having a short distance. This is because if the distance DC2 longer than the distance DC1 is returned after being cut by the first cutter blade 71, the leading edge of the receipt paper R reaches the upstream side of the thermal head 53, and the leading portion of the print data is described. This is because it will not happen.

  FIG. 12C is a side view of the periphery of the receipt paper R when printing is performed and conveyed by the print area. In FIG. 12C, simultaneously with the start of printing, the receipt paper R is conveyed in the forward direction at a speed corresponding to the printing speed, and advances in the forward direction only for a preset printing area.

  After printing, when the receipt paper R is advanced in the forward direction for discharge, it must be conveyed by a distance DC2 from the thermal head 53 to the second cutter blade 72. This is to prevent the printed area from being cut regardless of whether the printed receipt paper R is cut by either the first cutter blade 71 or the second cutter blade 72.

  FIG. 12D is a side view of the periphery of the receipt paper R conveyed in the forward direction by the distance DC2. In FIG. 12D, as a result of being conveyed in the positive direction by the distance DC2, the end of the printing area corresponds to the cutting edge position of the second cutter blade 72.

  For example, when only the distance DC1 from the thermal head 53 to the first cutter blade 71 is conveyed, the end of the print area coincides with the position of the first cutter blade 71 and reaches the second cutter blade 72. If it is cut by the second cutter blade 72, the print area is cut halfway. In order to prevent this, the printing apparatus 50 transports the receipt paper R according to the procedure shown in FIGS. 12A to 12D.

  Therefore, when the blade of the previous cutting is the first cutter blade 71 and the blade of the current cutting is the first cutter blade 71 (first cutting condition in FIG. 5A), as shown in FIG. 6A, after the receipt paper R after cutting. There are margins only at the edges. Then, in the case where the last cutting blade is the first cutter blade 71 and the current cutting blade is the second cutter blade 72 (third cutting condition in FIG. 5C), as shown in FIG. 6C, before and after the receipt paper R after cutting. There are no margins at both ends.

  FIG. 13A is a side view of the periphery of the receipt paper R immediately after being cut by the second cutter blade 72. In FIG. 13A, since it is immediately after being cut by the second cutter blade 72, the leading edge of the receipt paper R corresponds to the cutting edge position of the second cutter blade 72.

  FIG. 13B is a side view of the periphery of the receipt paper R conveyed in the return direction by a distance DC1 prior to printing. In FIG. 13B, as a result of being returned by the distance DC1, the leading edge of the receipt paper R is in a state of protruding to the discharge port 50a side from the print start position of the thermal head 53. The protrusion margin corresponds to [d2-d1]. Accordingly, a margin is simply formed in front of the receipt paper R.

  FIG. 13C is a side view of the periphery of the receipt paper R when printing is performed and transported for the printing area. In FIG. 13C, simultaneously with the start of printing, the receipt paper R is conveyed in the forward direction at a speed corresponding to the printing speed, and proceeds in the forward direction only for a preset printing area.

  FIG. 13D is a side view of the periphery of the receipt paper R conveyed in the forward direction by the distance DC2. In FIG. 13D, as a result of being conveyed in the positive direction by the distance DC2, the rear end of the printing area corresponds to the cutting edge position of the second cutter blade 72.

  In this state, when the receipt paper R is cut by the first cutter blade 71, a blank is formed at the rear end of the cut receipt paper R, and as a result, a blank is formed at both front and rear ends of the receipt paper R. On the contrary, when the receipt paper R is cut by the second cutter blade 72, there is no blank at the rear end of the cut receipt paper R, and as a result, there is a blank only at the front end of the receipt paper R.

  Therefore, when the blade of the previous cutting is the second cutter blade 72 and the blade of the current cutting is the first cutter blade 71 (fourth cutting condition in FIG. 5D), as shown in FIG. 6D, before and after the receipt paper R after cutting. There are margins at both ends. If the last cutting blade is the second cutter blade 72 and the current cutting blade is the second cutter blade 72 (second cutting condition in FIG. 5B), the front end of the receipt paper R after cutting as shown in FIG. 6B There are only margins.

  As described above, the present invention is useful for an apparatus that discharges some printed material and allows a customer to cut the printed material.

50 Printing device 50a Discharge port (exit)
51 Printing mechanism (printing part)
53 Thermal head (printing part)
55 Pretension rotor (printing section, transport mechanism)
71 1st cutter blade 72 2nd cutter blade

JP 2003-028704 A

Claims (3)

A printing device for issuing a printing object,
A first cutter blade fixedly disposed at a position facing the surface side of the substrate,
A second cutter blade fixedly disposed at a position facing the back side of the substrate,
Comprising
Printing device. The printer further includes a printing unit for printing on the substrate.
The distance from the exit of the printing unit to each of the first cutter blade and the second cutter blade is equal.
The printing apparatus according to claim 1. The printed material is a label having a glue layer on the back side,
Non-adhesive coating is applied to the second cutter blade,
The printing apparatus according to claim 1.

Images