JP2014139102A - Printer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer device capable of correctly grasping the residual quantity of sheets and reducing occurrence of non-utilization time of a printer.SOLUTION: The printer device comprises: a printing part for printing to a sheet which is wound into a roll state; a sheet residual quantity detection part for measuring a roll diameter of the wound sheet and thickness of the sheet; and a printing sheet number calculation part for calculating sheet length required for printing of 1 page, and calculating printing sheet number for printing at the same quantity to the printing of 1 page on the wound sheet based on data detected by the sheet residual quantity detection part.

Description

  Embodiments described herein relate generally to a printer device that prints and issues a wound paper sheet.

  In a printer device used as an issuer for receipts or the like, after printing predetermined items on a long paper drawn from a roll paper wound in a roll, the paper is cut into a paper piece of a predetermined length and discharged. It is carried out. In addition, after a predetermined matter is printed on a label sheet that is affixed to the mount and held in a roll shape, the label is released from the mount and issued.

  The printer device is provided with a paper out sensor that detects that the paper or the label paper has run out. When the paper out is detected, the printer is notified that the paper has run out. Yes.

  In detecting the remaining amount of paper, a method that detects when the paper is completely cut, a method that detects when the paper is expected to run out soon, and a paper remaining amount that is detected by detecting the paper thickness and roll diameter. Methods are known.

  After the paper is completely cut, the printer will be out of service until it is replenished, and the method that detects when the paper is expected to run out soon can prevent the occurrence of non-operation. The detection result includes an error. Also, it is not known how many sheets can be printed in any of the detection methods.

JP 2012-188180 A

  The problem to be solved by the present invention is to provide a printer apparatus that accurately grasps the remaining amount of paper and reduces the occurrence of printer non-operation time.

  In order to achieve the above object, a printing unit that performs printing on a paper wound in a roll shape, a paper remaining amount detection unit that measures a roll diameter and a paper thickness of the paper wound in the roll shape, The paper length required for one page of printing is calculated, and the number of printable sheets with the same amount of printing as that of one page of printing on the paper wound in the roll shape is calculated based on the data of the paper remaining amount detecting unit. The printer device is provided with a printable sheet number calculating section.

FIG. 2 is a main part configuration diagram of the printer apparatus according to the first embodiment. FIG. 3 is a block diagram illustrating a control circuit configuration of the printer apparatus according to the first embodiment. Explanatory drawing explaining the black mark which concerns on 1st Embodiment. FIG. 10 is a main part configuration diagram of a printer apparatus according to a second embodiment. FIG. 6 is a block diagram illustrating a control circuit configuration of a printer apparatus according to a second embodiment. Explanatory drawing explaining the label and mount which concern on 2nd Embodiment.

  Hereinafter, a printer apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

(First embodiment)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a main configuration of the printer apparatus 10. In the printer device 10, a long sheet 11 wound in a roll shape is conveyed from the right side to the left side in the drawing, so in the following description, the right side in the drawing is the upstream side and the left side is the downstream side. Let it be the side. Reference numeral 11 in the drawing denotes a long sheet 11 wound around a winding shaft 12, and the winding shaft 12 is rotatably supported by the printer device 10. The surface 13 of the paper 11 is provided with a heat sensitive layer that develops color when heated.

  An idler roller 14 is rotatably supported on the downstream side of the wound paper 11, and a lower surface conveyance guide 15 is provided downstream of the idler roller 14, and an upper surface conveyance guide 16 is provided above the lower surface conveyance guide 15. The sheet 11 is conveyed between the lower surface conveyance guide 15 and the upper surface conveyance guide 16 through the sheet conveyance path 17.

  Further, a sheet remaining amount detection unit 40 to be described later is provided across the conveyance path from the sheet 11 wound in a roll shape, the winding shaft 12 and the idler roller 14 to the lower surface conveyance guide 15 and the upper surface conveyance guide 16.

  Further, downstream of the idler roller 14, a feed roller 18 that can be rotated by a motor (not shown), and an idler roller 19 that is opposed to the feed roller 18 with the sheet conveyance path 17 interposed therebetween are arranged. .

  A position sensor 22 that detects a black mark 21 provided on the back surface 20 of the paper 11 is provided downstream of the feed roller 18.

  Further, a platen roller 23 that can be rotated by a motor (not shown) and a thermal print head 24 that is disposed to face the platen roller 23 with the paper conveyance path 17 interposed therebetween are disposed downstream of the position sensor 22. The platen roller 23 and the thermal print head 24 constitute a printing unit 25.

  The thermal print head 24 prints line by line on the paper 11 in accordance with the conveyance of the paper 11 when the paper 11 is conveyed downstream on the paper conveyance path 17.

  The thermal print head 24 is pressed by the platen roller 23 and feeds the paper 11 to the downstream side by friction between the thermal print head 24 and the platen roller 23.

  A cutter 26 is provided on the downstream side of the printing unit 25. The cutter 26 has a fixed blade 27 and a movable blade 28, and the sheet 11 inserted in the slit (not shown) of the cutter is directed toward the fixed blade 27 by driving the movable blade 28 by a motor (not shown). Cut by sliding.

  Here, the cutter 26 has been described as a so-called slide type cutter in which the movable blade 28 slides toward the fixed blade 27. However, the present invention is not limited to this, and the movable blade rotates and contacts the fixed blade. A so-called rotary cutter or the like for cutting may be used.

  On the downstream side of the cutter 26, a feed roller 29 that can be rotated by a motor (not shown) and an idler roller 30 that is opposed to the feed roller 29 with the paper transport path 17 interposed therebetween are disposed.

  A discharge port 31 is provided on the downstream side of the feed roller 29, and the paper 11 on which predetermined printing has been completed is cut by the cutter 26, and then the discharge port 31 is cooperated by the feed roller 29 and the idler roller 30. Then, it is discharged to the outside of the printer device 10.

  A placement table 32 is provided below the discharge port 31 to place the printed paper 11 thereon.

  Further, the printer device 10 is provided with a display 33 that displays error conditions such as out of paper 11 and paper jam and various information of the printer device 10.

  FIG. 2 shows the control unit 50 of the printer 10 described above. The control unit 50 includes means for controlling each of sheet conveyance, printing, sheet discharge, printer status display, remaining sheet detection, and calculation of the number of printable sheets.

  The control unit 50 is composed of, for example, a microcomputer that links with the host computer 51 and executes various controls. A central processing unit (MPU) 52 of the control unit 50 performs sheet conveyance control, printing control, sheet discharge control, printer status display control, detection of the remaining amount of paper, calculation of the number of printable sheets, and the like according to a program. The MPU 52 includes a timer 53 as means for performing time setting and time control.

  A ROM 54 and a RAM 55 are installed as main storage means for storing a control program executed by the MPU 52 and data during control or calculation. The ROM 54 is a read-only memory having a control program and the like, and the RAM 55 is an occasional write memory for storing data and the like during calculation.

  In addition, the ROM 54 is provided with a printable sheet number calculating unit 70 that calculates the remaining printable sheet number based on data from the remaining sheet amount detecting unit 40.

  Further, the control unit 50 is provided with an input / output unit (I / O) 56 for taking in various input data from the host computer 51 and taking out the control output of the control unit 50 to the host computer 51. Yes. An MPU 52, a ROM 54, and a RAM 55 are linked to the I / O 56 through a bus.

  The I / O 56 includes first, second, third, fourth, fifth, sixth and seventh drivers 57, 58, 59, 60, 61, as means for taking out the control output. 62 and 63 are connected.

  The driver 57 supplies necessary drive output to the printing unit 25. The driver 58 supplies drive output to the remaining paper amount detection unit 40. The driver 59 supplies a drive output to the feed roller 18. The driver 60 supplies a drive output to the position sensor 22. The driver 61 supplies drive output to the cutter 26. The driver 62 supplies drive output to the feed roller 29. The driver 63 supplies a display drive output for causing the display 33 to perform various displays.

  The printing unit 25 includes a thermal print head 24 and a platen roller 23 as shown in FIG. The platen roller 23 is driven to rotate in synchronization with the printing operation by a motor (not shown) based on a control output as a command means of the MPU 52. The thermal print head 24 prints on the paper 11 based on print data from the host computer 51.

  The MPU 52 of the control unit 50 drives the remaining paper amount detection unit 40 via the driver 58 to measure the roll diameter of the paper 11 and the thickness of one paper 11 in the wound state.

  Further, the MPU 52 of the control unit 50 drives the feed roller 18 via the driver 59 to convey the paper 11.

  The MPU 52 of the control unit 50 drives the position sensor 22 via the driver 60 and detects the black mark 21 provided on the other surface 20.

  The MPU 52 of the control unit 50 drives the cutter 26 via the driver 61 to cut the paper 11.

  The MPU 52 of the control unit 50 drives the feed roller 29 via the driver 62 and discharges the paper 11 from the discharge port 31 to the outside of the printer device 10.

  Further, the MPU 52 of the control unit 50 displays various information of the printer device 10 on the display 33 via the driver 63.

  Next, the operation of the printer apparatus 10 will be described. The controller 50 carries the paper 11 and prints on the paper 11 in accordance with a program stored in the ROM 54.

  First, the wound paper 11 is pulled out, passes through the idler roller 14, passes through the paper transport path 17, and the leading end of the paper 11 is sandwiched between the feed roller 18 and the idler roller 19.

  In this state, when a print request is input from the host computer 51, the control unit 50 drives the remaining paper amount detection unit 40 so that the diameter r of the wound paper 11 and the thickness t of the paper 11 are tapped. And the detected data is sent to the printable sheet number calculating section 70 provided in the ROM 54. Note that this is a method of measuring the diameter r of the paper 11 and the thickness t of one paper 11, but it is omitted here because it is a known method.

  The printable sheet number detection unit 70 calculates the sheet length L of the sheet 11 from the r and t data obtained from the remaining sheet detection unit 40 using a calculation formula stored in advance in the printable sheet number calculation unit 70. .

  Next, the control unit 50 rotates the feed roller 18 in the X direction in FIG. 1 and conveys the paper 11 to the printing start position of the printing unit 25.

  Next, the control unit 50 sends the print data sent from the host computer 51 to the printing unit 25 and prints on the print 11 by the cooperation of the thermal print head 24 and the platen roller 23. At the time of printing, the control unit 50 also sends a drive signal to the position sensor 22.

  As shown in FIG. 3, black marks 21 are provided on the back surface 20 of the paper 11 at regular intervals.

  The position sensor 22 is a reflective sensor, and sends to the printable sheet number calculating section 70 how many black marks 21 have been detected from the start of printing the first sheet to the end of printing the first sheet.

  The pitch of the black mark 21 is input in advance to the printable sheet number calculation unit 70, and is 1 depending on the number of black marks 21 detected from the start of printing the first sheet to the end of printing of the first sheet and the pitch of the black marks 21. The length L1 of the paper 11 necessary for printing a sheet is calculated. Thereafter, the printable sheet number calculating section 70 can print any number of sheets of paper 11 currently wound based on the sheet length L of the sheet 11 and the length L1 of the sheet 11 necessary for printing on one sheet. Calculate and store.

  When predetermined printing on the paper 11 is completed, the control unit 50 rotates the feed roller 18 in the X direction in FIG. 1 to convey the paper 11 to the cutting position and stop it.

  Next, the control unit 50 drives the cutter 26 and slides the movable blade 28 to the fixed blade 27 by a motor (not shown) to cut the paper 11.

  Next, the control unit 50 drives the feed roller 29 to discharge the printed paper 11 from the discharge port 31 to the outside of the printer device 10.

  Next, the control unit 50 rotates the feed roller 18 in the Y direction in FIG. 1, conveys the paper 11 to the print start position, and stops the rotation of the feed roller 18.

  An operator who uses the printer device 10 uses the screen of the display 33 or the host computer 51 to store the rolled paper 11 currently loaded in the printer device 10 stored in the print number calculation unit 70. It is possible to obtain information on how many sheets can be printed.

  Conventionally, the notification of out of paper in the printer device is a method of notifying when the paper is completely cut, and a method of notifying the paper called the near end, but the remaining amount of paper has been reduced to the extent that the paper can be cut soon. There are known methods for informing the user, but in any of the methods, the stop time of the printer device becomes long, and information on how many sheets can be printed on the currently wound paper 11 Can not get.

  Therefore, in this embodiment, it is possible to obtain information on how many sheets can be printed on the currently wound paper 11.

  Further, when calculating information on how many sheets can be printed, the sheet length of the sheet 11 necessary for printing one sheet is obtained as the sheet length information of the sheet 11 on which printing has actually been performed. Therefore, even if multiple types of prints with different printing amounts are printed, it is possible to know how many prints can be printed with which print type by printing the multiple types of prints once. It is possible to judge whether it is good.

  In this embodiment, the number of sheets that can be printed on the currently wound paper is calculated using information on the diameter r of the wound paper 11 and the thickness t of the paper.

  Therefore, even if there is a difference in sheet thickness due to the difference in sheet manufacturer, the correct sheet length L can be calculated, and as a result, the number of sheets that can be printed can be calculated accurately, and the sheet 11 can be replaced in the middle. In addition, it is possible to easily calculate how many sheets can be printed even on a sheet that has been replaced in the middle by printing only one sheet.

  Although the calculation using the measurement result by detecting the black mark has been described when calculating the sheet length necessary for printing one sheet, the present invention is not limited to this, and the data sent from the host computer 51 is not limited to this. If the printable sheet number calculation unit 70 can grasp how much paper is required for printing one page, it is not necessary to detect a black mark, and a sheet without a black mark is allocated. Even if it is used, it is possible to easily calculate how many sheets can be printed.

(Second Embodiment)
The second embodiment will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected in the same component as 1st Embodiment, and the detailed description is abbreviate | omitted.

  FIG. 4 shows the main configuration of the printer apparatus 101. In this printer apparatus, since a long mount 41 having a plurality of labels 42 attached and wound in a roll shape is conveyed from the right side to the left side in the drawing, the right side in the drawing is used in the following description. Is the upstream side, and the left side is the downstream side. An idler roller 14 is rotatably supported on the downstream side of the wound mount 41, and a lower surface conveyance guide 15 is provided downstream of the idler roller 14, and an upper surface conveyance guide 16 is provided above the lower surface conveyance guide 15. The board 41 to which the label 42 is attached is conveyed between the lower surface conveyance guide 15 and the upper surface conveyance guide 16 as a board conveyance path 47.

  Further, a remaining paper amount detection unit 40 is provided across the conveyance path from the mount 41, the winding shaft 12, and the idler roller 14 to which the label 42 is attached to the lower surface conveyance guide 15 and the upper surface conveyance guide 16.

  A feed roller 18 that can be rotated by a motor (not shown) and an idler roller 19 that is opposed to the feed roller 18 with a mount sheet conveyance path 47 interposed therebetween are disposed downstream of the idler roller 14. .

  A label sensor 43 is disposed downstream of the feed roller 18. The label sensor 43 detects the position of the label 42, the size of the label, and the distance between the label and the next label on the long mount 41 in which a plurality of labels 42 are attached and wound in a roll shape.

  Downstream of the label sensor 43, a platen roller 23 that can be rotated by a motor (not shown) and a thermal print head 24 that is opposed to the platen roller 23 with a mount conveyance path 47 interposed therebetween are arranged. The platen roller 23 and the thermal print head 24 constitute a printing unit 25.

  A feed roller 29 that can be rotated by a motor (not shown) and an idler roller 30 that is opposed to the feed roller 29 with a mount sheet conveyance path 47 interposed therebetween are disposed on the downstream side of the printing unit 25. .

  A peeling plate 45 is provided on the downstream side of the feed roller 29. The label 42 attached to the mount 41 is peeled from the mount 41 by the release plate 45. The peeled label 42 is discharged to the outside from the discharge port 31, and the mount 41 from which the label 42 has been peeled is taken up by the take-up roller 46.

  The discharge port 31 is provided with a label discharge sensor 44.

  In addition, the printer device 101 is provided with a display 33 that displays error conditions such as a paper out of the label 42 and a label jam, and various information of the printer 101.

  FIG. 5 shows the control unit 50 of the printer apparatus 101 described above. The control unit 50 has means for controlling the transport of the label with the label attached, label printing, label ejection, printer status display, label remaining amount detection, and calculation of the number of printable labels.

  The control unit 50 is composed of, for example, a microcomputer that links with the host computer 51 and executes various controls. The central processing unit (MPU) 52 of the control unit 50 controls the conveyance of the mount with the label attached according to the program, the label printing control, the paper discharge control, the printer status display control, the remaining label detection, and the number of printable labels. Perform calculations. The MPU 52 includes a timer 53 as means for performing time setting and time control.

  A ROM 54 and a RAM 55 are installed as main storage means for storing a control program executed by the MPU 52 and data during control or calculation. The ROM 54 is a read-only memory having a control program and the like, and the RAM 55 is an occasional write memory for storing data and the like during calculation.

  In addition, the ROM 54 is provided with a printable sheet number calculating unit 70 that calculates the number of remaining printable labels based on data from the remaining sheet amount detecting unit 40.

  Further, the control unit 50 is provided with an input / output unit (I / O) 56 for taking in various input data from the host computer 51 and taking out the control output of the control unit 50 to the host computer 51. Yes. An MPU 52, a ROM 54, and a RAM 55 are linked to the I / O 56 through a bus.

  The I / O 56 includes first, second, third, sixth, seventh, eighth, ninth and tenth drivers 57, 58, 59, 62 as means for taking out the control output. 63, 64, 65, 66 are connected.

  The driver 57 supplies necessary drive output to the printing unit 25. The driver 58 supplies drive output to the remaining paper amount detection unit 40. The driver 59 supplies a drive output to the feed roller 18. The driver 62 supplies drive output to the feed roller 29. The driver 63 supplies a display drive output for causing the display 33 to perform various displays. The driver 64 supplies a drive output to the label sensor 43. The driver 65 supplies a drive output to the label discharge sensor 44. The driver 66 supplies a driving output to the winding roller 46.

  The printing unit 25 includes a thermal print head 24 and a platen roller 23 as shown in FIG. The platen roller 23 is driven to rotate in synchronization with the printing operation by a motor (not shown) based on a control output as a command means of the MPU 52. The thermal print head 24 prints on the label 42 based on print data from the host computer 51.

  Further, the MPU 52 of the control unit 50 drives the remaining paper amount detection unit 40 via the driver 58, and the roll diameter of the mount 41 in a state where a plurality of labels 42 are attached and wound, and the mount 41 and the label 42. The thickness of the thickness of one sheet in the overlapped state is measured.

  In addition, the MPU 52 of the control unit 50 drives the feed roller 18 via the driver 59 and conveys the mount 41 in a state where a plurality of labels 42 are attached and wound.

  Further, the MPU 52 of the control unit 50 drives the feed roller 29 via the driver 62 and conveys the mount 41 to which the label 42 is attached toward the discharge port 31.

  Further, the MPU 52 of the control unit 50 displays various information of the printer apparatus 101 on the display device 33 via the driver 63.

  The MPU 52 of the control unit 50 drives the label sensor 43 via the driver 64 to measure the position of the label 42, the size of the label, and the distance between the label and the next label.

  The MPU 52 of the control unit 50 drives the label discharge sensor 44 via the driver 65 to determine whether the label after printing has been removed.

  Further, the MPU 52 of the control unit 50 drives the winding roller 46 via the driver 66 and winds the mount 41.

  Next, the operation of the printer apparatus 101 will be described. The control unit 50 performs the transport of the mount 41 on which a plurality of labels 42 are pasted and the printing operation on the labels 42 in accordance with a program stored in the ROM 54.

  First, the mount 41 on which a plurality of labels 42 are affixed is pulled out, passed through the idler roller 14, then passed through the mount transport path 47, and then on the acute angle surface of the peeling plate 45 having two adjacent surfaces that become acute angles. The tip is wound around the winding roller 46.

  Note that when the mount 41 on which a plurality of labels 42 are first attached is set in the printer apparatus 101, the label 42 attached to the head portion is wasted. For this reason, when setting the mount 41 with the label 42 affixed to the printer apparatus 101, the distance from the printing unit to the take-up roller 46 via the peeling plate 45 is about the label 42 at the head of the mount 41. It is desirable not to stick.

  In this state, when a print request is input from the host computer 51, the control unit 50 drives the remaining paper amount detection unit 40, and the diameter r and the label 42 of the mount 41 on which the plurality of labels 42 are attached and wound. Then, the thickness t1 of one sheet in a state where the mount 41 is overlapped is measured, and the detected data is sent to the printable sheet number calculation unit 70 provided in the ROM 54. Note that this is a method of measuring the diameter r of the paper 11 and the thickness t1 of one sheet in a state where the label 42 and the mount 41 overlap each other, but it is omitted here because it is a known method.

  The printable sheet number detection unit 70 calculates the mount length LD of the mount 41 from the r and t1 data obtained from the remaining sheet detection unit 40 using a calculation formula stored in advance in the printable sheet number calculation unit 70. . The mount length of the mount 41 referred to here is not the length of only the portion A which is the mount between the label 42 and the next label 42 shown in FIG. 6, but the winding of the mount 41 from the leading end of the mount 41. Represents the length to the end.

  Next, the control unit 50 rotates the feed roller 18 in the X direction of FIG. 4 and conveys the mount 41 on which the label 42 is attached toward the printing unit 25. The control unit 50 conveys the mount 41 to which the label 42 is attached toward the printing unit 25 and simultaneously sends a drive signal to the label sensor 43.

  The label sensor 43 is a transmissive sensor, and has a light emitting portion on the lower surface side conveyance guide 15 side and a light receiving portion on the upper surface side conveyance guide 16 side.

  When the mount 41 to which the label 42 is attached passes through the transmission type sensor, the portion B of the label 42 and the mount 41 that overlaps the label 42 shown in FIG. The transmittance detected by the light receiving portion is different from the portion A which is the portion.

  The data of the difference in transmittance is sent to the printable sheet number calculation unit 70 and collated with the conveyance speed data, so that the length of B in the label 42 and only the mount between the label 42 and the next label 42 The length of A which is is calculated.

  When the print data sent from the host computer 51 is sent to the printing unit 25, the label 42 is printed by the cooperation of the thermal print head 24 and the platen roller 23. In the embodiment, the surface of the label 42 is provided with a heat sensitive layer that develops color when heated. When the label 42 without the heat sensitive layer is used, it is necessary to separately provide an ink ribbon between the label 42 and the thermal print head 24 so that the heated portion is melted and transferred to the surface of the label 42 when heated. There is.

  The printable sheet count calculation unit 70 stores the distance A and the distance B in FIG. Although the printing is performed on the label 42, the length of the mount 41 necessary for one printing is not only the label 42 but also the length A including the portion A between the label 42 and the next label 42. It is. For this reason, the printable sheet number calculating section 70 stores A + B as the length of the mount 41 necessary for printing one label. Thereafter, the printable sheet number calculation unit 70 uses a mount length LD of the mount 41 and a length (A + B) of the mount 41 necessary for printing one label, and a plurality of labels 42 currently attached to the printer 101. The number of labels that can be printed on the mount 41 to which is attached is calculated.

  When the predetermined printing on the label 42 is completed, the control unit 50 drives the feed roller 18 and the platen roller 23 to convey the mount 41 to which the plurality of labels 42 are attached in the downstream direction.

  Thereafter, the mount 41 to which the label 42 is attached is conveyed along the acute angle surface of the peeling plate 45 having two adjacent surfaces having an acute angle.

  When the mount 41 to which the label 42 is attached is transported along the acute angle surface of the release plate 45, the label 42 is peeled from the mount 41 by the stiffness without following the mount 41 that changes the transport direction.

  As shown in FIG. 4, conveyance of the label 42 is stopped in a state where the label 42 is partially peeled off from the mount 41 and the peeled portion has reached the detectable range of the label discharge sensor 44. If the next label 42 is issued before the operator removes the peeled label 42, the label 42 that is not removed falls and becomes unusable. In order to prevent this, a label discharge sensor 44 is provided.

  The label discharge sensor 44 is a reflective sensor and can detect whether a label is present within the detectable range.

  As described above, the conveyance of the mount 41 on which the label 42 is affixed is stopped with the label 42 partially peeled from the mount 41 and the peeled portion has reached the detectable range of the label discharge sensor 44. In this case, the light emitted from the light emitting unit (not shown) of the label discharge sensor 44 reaches the light receiving unit (not shown) of the label discharge sensor 44 after being reflected by the label 42. Accordingly, the label discharge sensor 44 determines that the issued label 42 remains without being removed.

  When the operator removes the issued label 42 from the mount 41 for attaching to an article or the like, light emitted from a light emitting unit (not shown) of the label discharge sensor 44 is not reflected by the label 42, so that the label discharge sensor 44 It does not reach the light receiving unit (not shown). Thus, the label discharge sensor 44 determines that the issued label 42 has been removed, and issues the next label 42. When the next label is issued, the take-up roller 46 takes up the mount 41 in synchronization with the conveyance of the mount 11 to which the label 42 is attached. As a result, labels 42 printed with predetermined contents are sequentially issued.

  The operator who uses the printer apparatus 101 uses the screen of the display device 33 or the host computer 51 to determine how many sheets can be printed with the currently loaded label 42 stored in the printable sheet number calculation unit 70. Information can be obtained. Also in the second embodiment, it is possible to reduce the stop time of the printer apparatus 101 as compared with the method of notifying when the label is completely cut.

  In addition to obtaining information on how many sheets can be printed, which cannot be obtained by the near-end detection method, even if the label paper is replaced in the middle, only one label can be printed, and another number of sheets can be printed. It is possible to obtain such information.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10: Printer device 11: Paper 21: Black mark 25: Printing unit 26: Cutter 40: Remaining paper amount detecting unit 70: Printable sheet number calculating unit

Claims (3)

A printing unit for printing on paper wound in a roll;
A remaining paper amount detecting unit for measuring a roll diameter and a paper thickness of the paper wound in the roll shape;
The paper length necessary for one page of printing is calculated, and the number of printable sheets for the same amount of printing as the one page of printing on the paper wound in the roll shape is calculated based on the data of the paper remaining amount detecting unit. A printer device having a printable sheet number calculating section.   The printer apparatus according to claim 1, wherein a sheet length necessary for one page of printing is calculated from a black mark of the sheet wound in a roll shape. A printing unit that prints on a label portion of a mount in which a plurality of labels are attached and in a wound state;
The remaining amount of paper detection unit for measuring the roll diameter of the mount in which the plurality of labels are affixed, and the portion where the label and the mount overlap,
The number of printable sheets for calculating the length of the label and the length of the mount between the label and the next label and calculating the number of printable sheets on the label based on the data of the remaining paper amount detecting unit A printer device having a calculation unit.

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