JP2022018324A - Printer, printed medium width derivation method, and program - Google Patents

Abstract

To provide a printer which can detect a length in a width direction of a printed medium without including detection means, such as a sensor, separately.SOLUTION: A printer 1 includes: a transport part (a motor 32 for transportation and a platen roller 7) which transports a printed medium (a heat-sensitive tape 21); and a control unit (a control circuit 12) which derives a length in a width direction of the printed medium based on a rotation speed of the transport part when the printed medium set at the transport part is transported by the transport part.SELECTED DRAWING: Figure 8

Description

The disclosure of the present specification relates to a printing apparatus, a method for deriving a width of a printed medium, and a program.

Conventionally, a label printer that prints characters, figures, and the like on a printing medium to create a label has been known. As such a label printer, for example, in Patent Document 1, the type of printing tape (tape width, etc.) is detected by detecting a plurality of holes provided in a tape cartridge containing a printing tape with a tape identification sensor. The printers that enabled it are listed.

Japanese Unexamined Patent Publication No. 2013-015950

A label printer as described in Patent Document 1 needs to be separately provided with a detection means such as a tape identification sensor in order to detect the length in the width direction of the print medium.

Based on the above circumstances, an object of the present invention according to one aspect is to provide a technique capable of detecting the length in the width direction of a printed medium without separately providing a detection means such as a sensor. ..

The printing apparatus according to one aspect of the present invention is based on a transport unit for transporting a print medium and a rotation speed of the transport unit when the print media set in the transport unit is transported to the transport unit. A control unit for deriving the length of the printed medium set in the transport unit in the width direction is provided.

The method for deriving the width of the printed medium according to one aspect of the present invention is the width direction of the printed medium based on the rotation speed of the conveyed unit when the printed medium set in the conveyed unit is conveyed to the conveyed unit. Derive the length.

The program according to one aspect of the present invention derives the widthwise length of the printed medium based on the rotation speed of the conveyed unit when the printed medium set in the conveyed unit is conveyed to the conveyed unit. Let the processor execute the process.

According to the above aspect, since the length in the width direction of the print medium can be detected without separately providing a detection means such as a sensor, it is possible to reduce the product cost.

It is a top view of the printing apparatus 1 in a state where a lid 4 is closed. It is a top view of the printing apparatus 1 in the state which the lid 4 is opened. It is a block diagram which shows the hardware structure of a printing apparatus 1. FIG. 1 is a diagram schematically showing a state in which a heat-sensitive tape 21 is sandwiched between a platen roller 7 and a thermal head 8. FIG. 2 is a diagram schematically showing a state in which the thermal tape 21 is sandwiched between the platen roller 7 and the thermal head 8. It is a figure which shows the relationship between the tape width of a heat sensitive tape 21 and the friction between a platen roller 7 and a thermal head 8. It is a figure which illustrates the signal waveform from an encoder 33 when a control circuit 12 controls a transport motor 32 and rotates a platen roller 7. It is a flowchart which shows an example of a print control process. It is a figure which illustrates the table which showed the time corresponding to each pulse count number of the encoder signal waveform for each tape width of a heat sensitive tape 21.

FIG. 1 is a plan view of the printing apparatus 1 with the lid 4 closed. FIG. 2 is a plan view of the printing apparatus 1 with the lid 4 open. Hereinafter, the configuration of the printing apparatus 1 will be described with reference to FIGS. 1 and 2.

The printing device 1 is a label printer that prints on the thermal tape 21 which is a printing medium. Hereinafter, a heat-sensitive label printer using the heat-sensitive tape 21 will be described as an example, but the printing method is not particularly limited. The printing device 1 may be a thermal transfer type label printer using an ink ribbon.

As shown in FIG. 1, the printing apparatus 1 includes an apparatus housing 2, an input unit 3, an openable / closable lid 4, a window 5, and a display unit 6. Further, although not shown, the device housing 2 is provided with a power cord connection terminal, an external device connection terminal, a storage medium insertion port, and the like.

The input unit 3 is provided on the upper surface of the device housing 2. The input unit 3 includes various keys such as an input key, a cross key, a conversion key, and a decision key. The lid 4 is arranged on the device housing 2. The user can open the lid 4 as shown in FIG. 2 by pressing the button 4a to release the lock mechanism. A window 5 is formed on the lid 4 so that it can be visually confirmed whether or not the thermal tape 21 is housed in the printing apparatus 1 even when the lid 4 is closed. Further, the lid 4 has a display unit 6.

The display unit 6 is, for example, a liquid crystal display, an organic EL (electro-luminescence) display, or the like. The display unit 6 displays characters and the like corresponding to the input from the input unit 3, selection menus for various settings, messages related to various processes, and the like. The display unit 6 may be a display with a touch panel, or may function as a part of the input unit 3.

As shown in FIG. 2, the apparatus housing 2 includes a medium adapter accommodating portion 2a, a platen roller 7, and a thermal head 8 below the lid 4. The medium adapter 20 is accommodated in the medium adapter accommodating portion 2a. Further, the apparatus housing 2 further includes a full cutter 9, a half cutter 10, and a photo sensor 11 between the discharge port 2b from which the heat-sensitive tape 21 is discharged and the thermal head 8. The half cutter 10, the full cutter 9, and the photo sensor 11 are arranged in this order from the discharge port 2b side.

The medium adapter 20 accommodates the thermal tape 21. The heat-sensitive tape 21 housed in the medium adapter 20 is housed in a state of being wound in the longitudinal direction and having a cylindrical shape, for example. The medium adapter 20 is designed according to the tape width (length in the width direction) of the thermal tape 21. In this example, the medium adapter 20 is a medium adapter for tape having a tape width of 6 mm.

In the printing apparatus 1, the medium adapter 20 accommodating the thermal tape 21 is accommodated in the printing apparatus 1, so that the thermal tape 21 is accommodated in the printing apparatus 1. The printing apparatus 1 can accommodate medium adapters corresponding to different tape widths. Specifically, the printing apparatus 1 can accommodate, for example, a medium adapter 20 for 6 mm tape, a medium adapter for 12 mm tape, a medium adapter for 18 mm tape, and the like, in addition to the medium adapter 20 for 6 mm tape shown in FIG. ..

The heat-sensitive tape 21 has, for example, a five-layer structure in which a separator, an adhesive layer, a base material, a coloring layer, and a protective layer are laminated in this order from the lower layer. The separator is peelably attached to the base material so as to cover the adhesive layer. The material of the separator is, for example, paper, but the material is not limited to paper, and PET (polyethylene terephthalate) may be used. The adhesive layer is an adhesive material applied to the base material. The material of the base material is, for example, colored PET. The color-developing layer is a heat-sensitive color-developing layer that develops color by heating with heat energy. The material of the protective layer is, for example, transparent PET. The structure of the heat-sensitive tape 21 is not limited to such a five-layer structure. For example, the thermal tape 21 may have no protective layer and the color-developing layer may be exposed.

The platen roller 7 conveys the heat-sensitive tape 21. The platen roller 7 is rotated by the rotation of the transport motor 32 (see FIG. 3). The transport motor 32 is, for example, a stepping motor, a direct current (DC) motor, or the like. The platen roller 7 conveys the thermal tape 21 in the conveying direction by rotating the thermal tape 21 unwound from the medium adapter 20 while holding it between the thermal head 8 and the thermal head 8.

The thermal head 8 is a print head that prints on the thermal tape 21. The thermal head 8 has a plurality of heat generating elements 8a (see FIG. 3) arranged in the main scanning direction orthogonal to the transport direction of the heat sensitive tape 21, and the heat sensitive tape 21 is heated by the heat generation element 8a one line at a time. Print.

The full cutter 9 is a cutting device that performs a full cut, and cuts the heat-sensitive tape 21 to create a tape piece. The full cut is an operation of cutting all the layers constituting the heat-sensitive tape 21 along the width direction of the heat-sensitive tape 21.

The half cutter 10 is a cutting device that performs a half cut, and makes a cut in the thermal tape 21. The half-cut is an operation of cutting the layers of the heat-sensitive tape 21 other than the separator along the width direction.

The photo sensor 11 is a sensor arranged on the transport path of the heat-sensitive tape 21 in order to detect the tip of the heat-sensitive tape 21. The photo sensor 11 includes, for example, a light emitting element and a light receiving element. The light emitting element is, for example, a light emitting diode, and the light receiving element is, for example, a photodiode. The photo sensor 11 detects the reflected light of the light emitted from the light emitting element by the light receiving element, and outputs a signal to the control circuit 12 (see FIG. 3) described later. The control circuit 12 detects the tip of the heat-sensitive tape 21 based on, for example, a change in the amount of reflected light detected by the light receiving element. The photo sensor 11 is not limited to the photo reflector that detects the reflected light of the light emitted from the light emitting element. The photo sensor 11 may be a photo interrupter in which a light emitting element and a light receiving element are arranged so as to face each other.

FIG. 3 is a block diagram showing a hardware structure of the printing apparatus 1. In addition to the above-described components, the printing device 1 includes a control circuit 12, a ROM (Read Only Memory) 13, a RAM (Random Access Memory) 14, a display drive circuit 15, and a head drive circuit 16, as shown in FIG. It includes a thermista 17, a transport motor drive circuit 31, a transport motor 32, an encoder 33, a cutter motor drive circuit 34, and a cutter motor 35.

The control circuit 12 is a control unit including a processor such as a CPU (Central Processing Unit). The control circuit 12 controls the operation of each part (for example, the platen roller 7) of the printing apparatus 1 by expanding and executing the program stored in the ROM 13 in the RAM 14.

The ROM 13 contains a program (including a program for performing the process shown in FIG. 8 described later) and various data necessary for executing the program (for example, a font, a reference rotation speed described later, and a heat-sensitive tape 21 having each tape width). Differences, etc.) are stored. The RAM 14 is a work memory used for executing a program. The computer-readable recording medium that stores the program and data used for processing in the printing apparatus 1 includes a physical (non-temporary) recording medium such as ROM 13 and RAM 14.

The display drive circuit 15 is a liquid crystal display driver circuit and an organic EL display driver circuit. The display drive circuit 15 controls the display unit 6 based on the display data stored in the RAM 14 under the control of the control circuit 12.

The head drive circuit 16 controls the energization of the heat generating element 8a of the thermal head 8 based on the print data and the control signal under the control of the control circuit 12. The thermal head 8 has a plurality of heat generating elements 8a arranged in the main scanning direction, and the heat sensitive tape 21 is heated by the heat generating elements 8a to print one line at a time. The thermistor 17 is embedded in the thermal head 8. The thermistor 17 measures the temperature of the thermal head 8.

The transport motor drive circuit 31 drives the transport motor 32 under the control of the control circuit 12. The transport motor 32 may be, for example, a stepping motor or a direct current (DC) motor. The transport motor 32 rotates the platen roller 7. Under the control of the transfer motor drive circuit 31, the transfer motor 32 rotates not only in the forward direction, which is the direction in which the heat-sensitive tape 21 is drawn out, but also in the reverse direction, which is the direction in which the heat-sensitive tape 21 is rewound.

The platen roller 7 is rotated by the driving force of the transport motor 32, and transports the heat-sensitive tape 21 along the longitudinal direction (sub-scanning direction, transport direction) of the heat-sensitive tape 21. The platen roller 7 is fed out from the medium adapter 20 when the transport motor 32 is rotating in the forward direction, and is fed out from the medium adapter 20 when the transport motor 32 is rotating in the reverse direction. Rewind the heat-sensitive tape 21.

That is, in the printing device 1, the control circuit 12 is a control unit that controls the platen roller 7 by controlling the transfer motor 32 via the transfer motor drive circuit 31. Further, the transport motor 32 and the platen roller 7 are transport units for transporting the heat-sensitive tape 21.

The encoder 33 outputs a signal to the control circuit 12 according to the rotation (drive) of the transport motor 32 or the platen roller 7. The encoder 33 may be provided on the rotating shaft of the transport motor 32, or may be provided on the rotating shaft of the platen roller 7. The control circuit 12 can specify the amount of the thermal tape 21 conveyed based on the signal from the encoder 33. Further, the control circuit 12 can also specify the rotation speed of the transport motor 32 or the platen roller 7 based on the signal from the encoder 33. The rotation speed of the transfer motor 32 or the platen roller 7 is also the rotation speed of the transfer unit that conveys the heat-sensitive tape 21. The expression of the rotation speed of the transfer motor 32 or the platen roller 7 also includes the rotation cycle and the rotation angle (for example, the rotation angle per predetermined time) of the transfer motor 32 or the platen roller 7.

The cutter motor drive circuit 34 drives the cutter motor 35 under the control of the control circuit 12. The full cutter 9 is operated by the power of the cutter motor 35 to cut the heat-sensitive tape 21 and create a tape piece. The half cutter 10 is operated by the power of the cutter motor 35 and cuts layers other than the separator in the thermal tape 21.

The printing apparatus 1 configured as described above is sandwiched between the heat-sensitive tape 21 (platen roller 7 and the thermal head 8) set in the transport unit (platen roller 7) without separately providing a detection means such as a sensor. It is possible to detect the tape width of the heat-sensitive tape 21). Hereinafter, this point will be specifically described with reference to FIGS. 4 to 8.

4 and 5 are diagrams schematically showing a state in which the thermal tape 21 is sandwiched between the platen roller 7 and the thermal head 8. FIG. 6 is a diagram showing the relationship between the tape width of the thermal tape 21 and the friction between the platen roller 7 and the thermal head 8. As shown in FIGS. 4 and 5, when the heat-sensitive tape 21 is sandwiched between the platen roller 7 and the thermal head 8, the platen roller 7 and the thermal tape 21 are different in the tape width of the sandwiched heat-sensitive tape 21. The contact area with the head 8 is different. Specifically, the larger the tape width of the heat-sensitive tape 21, the smaller the contact area between the platen roller 7 and the thermal head 8, and the smaller the tape width of the heat-sensitive tape 21, the smaller the contact area between the platen roller 7 and the thermal head 8. growing. That is, as shown in FIG. 6, the larger the tape width of the heat-sensitive tape 21, the smaller the friction between the platen roller 7 and the thermal head 8, and the smaller the tape width of the heat-sensitive tape 21, the smaller the platen roller 7. It also means that the friction between the thermal head 8 and the thermal head 8 becomes large.

From this, when the control circuit 12 controls the transport motor 32 to rotate the platen roller 7, the difference in the tape width of the heat-sensitive tape 21 sandwiched between the platen roller 7 and the thermal head 8 (platen roller). The difference in friction between the platen roller 7 and the thermal head 8) causes a difference in the rotational speed of the platen roller 7. Since the rotation of the platen roller 7 is linked to the rotation of the transfer motor 32, a difference in the rotation speed of the platen roller 7 also causes a difference in the rotation speed of the transfer motor 32. ..

FIG. 7 is a diagram illustrating a signal waveform (hereinafter referred to as “encoder signal waveform”) from the encoder 33 when the control circuit 12 controls the transport motor 32 to rotate the platen roller 7. In FIG. 7, in order from the top, the encoder signal waveform when the heat-sensitive tape 21 is not sandwiched between the platen roller 7 and the thermal head 8 (hereinafter referred to as “no tape”), the platen roller 7 and the thermal head Encoder signal waveform when a heat-sensitive tape 21 with a small tape width is sandwiched between 8 and (hereinafter referred to as "small tape width"), heat-sensitive with a large tape width between the platen roller 7 and the thermal head 8. The encoder signal waveform when the tape 21 is sandwiched (hereinafter referred to as “the case where the tape width is large”) is shown.

In these encoder signal waveforms, the cycle for one rotation of the transport motor 32 is also the case without tape (the friction between the platen roller 7 and the thermal head 8 is the largest) as shown in FIG. ), And when the heat-sensitive tape 21 is sandwiched between the platen roller 7 and the thermal head 8 (hereinafter referred to as "with tape"), the one with the larger tape width (with the platen roller 7). The smaller the friction with the thermal head 8, the smaller the friction. Further, as shown in FIG. 7, assuming that the cycle for one rotation of the transport motor 32 without tape is used as a reference value, when with tape, the wider tape width is used for the transport motor 32. The difference between the cycle of one rotation and the reference value becomes large. That is, the rotation speed of the transport motor 32 is the slowest when there is no tape, and when there is tape, the larger the tape width is, the faster it is. This also applies to the rotation speed of the platen roller 7.

Therefore, in the printing device 1, when the tape width of the heat-sensitive tape 21 (heat-sensitive tape 21 housed in the printing device 1) set in the transport unit (platen roller 7) is detected, the control circuit 12 is used for transport. The motor 32 is controlled to convey the thermal tape 21, and the rotation speed of the platen roller 7 (or the transfer motor 32) is measured (specified) based on the signal from the encoder 33 at this time, and based on the rotation speed. , The tape width of the heat-sensitive tape 21 set in the transport unit (platen roller 7) is derived.

Specifically, in the printing apparatus 1, the rotation speed of the platen roller 7 (or the transport motor 32) without the tape (the platen roller in a state where the heat-sensitive tape 21 is not set in the transport portion (platen roller 7)). 7 (or the rotation speed of the transport motor 32) is stored in the ROM 13 in advance as a reference rotation speed, and the platen roller 7 (or the transport motor 32) is rotated in the case of the heat-sensitive tape 21 having each tape width. The difference between the speed and the reference rotation speed is stored in the ROM 13 in advance. The rotation speed of the platen roller 7 (or the transport motor 32) in the case of no tape and in the case of the heat-sensitive tape 21 of each tape width is the encoder when the platen roller 7 is rotated by controlling the transport motor 32. It was acquired based on the signal from 33. Then, when detecting the tape width of the heat-sensitive tape 21 set in the transport unit (platen roller 7), the control circuit 12 controls the transport motor 32 to transport the heat-sensitive tape 21, and the encoder 33 at this time. The rotation speed of the platen roller 7 (or the transport motor 32) is measured (specified) based on the signal from, the difference between the rotation speed and the reference rotation speed stored in the ROM 13 is calculated, and the difference and the ROM 13 are calculated. The tape width of the heat-sensitive tape 21 set in the transport unit (platen roller 7) is derived based on the difference in the case of the heat-sensitive tape 21 of each tape width stored in. This makes it possible to detect the tape width of the heat-sensitive tape 21 set in the transport unit (platen roller 7) without separately providing a detection means such as a sensor. The control signal given to the transport motor 32 when the reference rotation speed was acquired and the rotation speed of the platen roller 7 (or the transport motor 32) in the case of the heat-sensitive tape 21 having each tape width were acquired. The control signal sometimes given to the transfer motor 32 and the control signal given to the transfer motor 32 when the heat-sensitive tape 21 whose tape width is detected are transferred are the same control signal. That is, this is the platen roller 7 (or the transfer) when the reference rotation speed is measured and when the heat-sensitive tape 21 set in the transfer unit (platen roller 7) is transferred to the platen roller 7 (or the transfer motor 32). It also means that the energy control (or the energy given to the transport motor 32) performed on the transport motor 32 is the same as when the rotation speed of the motor 32) is measured. Hereinafter, a print control process including a process of detecting such a tape width will be described with reference to FIG.

FIG. 8 is a flowchart showing an example of a print control process, and a part of the process shows an example of a method for deriving the width of a printed medium. Note that this print control process is a process performed by the control circuit 12 when the processor executes a program stored in the ROM 13, and is a process that starts when the printing device 1 acquires a print instruction input from the input unit 3, for example. Is.

When the print control process shown in FIG. 8 is started, the control circuit 12 first starts tape sequential transfer (step S1). Here, the control circuit 12 controls the transfer motor 32 to start the transfer of the heat-sensitive tape 21 in the forward direction.

Next, the control circuit 12 measures the speed (step S2). Here, the control circuit 12 measures (specifies) the rotation speed of the platen roller 7 (or the transport motor 32) based on the signal from the encoder 33.

Next, the control circuit 12 determines the tape width (step S3). Here, the control circuit 12 calculates the difference between the rotation speed of the platen roller 7 (or the transport motor 32) measured (specified) in step S2 and the reference rotation speed stored in the ROM 13, and the difference and the difference. The tape width of the heat-sensitive tape 21 being conveyed is determined (derived) based on the difference in the case of the heat-sensitive tape 21 of each tape width stored in the ROM 13. In this determination (derivation), for example, the difference closest to the calculated difference is specified from the differences in the case of the heat-sensitive tape 21 of each tape width stored in the ROM 13, and the tape for the specified difference is specified. The width is determined (derived) as the tape width of the heat-sensitive tape 21 being conveyed.

Next, the control circuit 12 performs reverse tape transfer to the position at the start of printing (step S4). Here, the control circuit 12 controls the transport motor 32 to transport the thermal tape 21 in the reverse direction until the head of the thermal tape 21 returns to the position at the start of printing (for example, the position of the photo sensor 11). ..

Next, the control circuit 12 performs a printing process for one sheet (step S5). Here, the control circuit 12 controls the transfer motor 32 and the thermal head 8 based on the print data and the tape width determined (derived) in step S3, and prints one sheet according to the print data. After printing the pattern on the thermal tape 21 line by line, the cutter motor drive circuit 34 is controlled to perform a process of making a cut in the thermal tape 21 by the half cutter 10.

Next, the control circuit 12 determines whether or not the number of printed sheets has been completed (step S6). Here, the control circuit 12 determines whether or not the printing of the print pattern for the number of prints on the thermal tape 21 is completed. If the determination result in step S6 is NO, the process returns to step S5.

On the other hand, if the determination result in step S6 is YES, the control circuit 12 performs a full cut process (step S7). Here, the control circuit 12 controls the cutter motor drive circuit 34 to cause the full cutter 9 to cut the heat-sensitive tape 21. When step S7 ends, the print control process shown in FIG. 8 ends.

According to the printing apparatus 1 described above, the tape width of the heat-sensitive tape 21 can be detected without separately providing a detection means such as a sensor, so that the product cost can be reduced.

The above-described embodiments show specific examples for facilitating the understanding of the invention, and the present invention is not limited to these embodiments. The printing apparatus, the method for deriving the width of the printed medium, and the program can be variously modified and changed without departing from the description of the claims.

In the above-described embodiment, the reference rotation speed (rotational speed of the platen roller 7 (or the transfer motor 32) without the tape) and the platen roller 7 (or the transfer motor 32) with the heat-sensitive tape 21 of each tape width ), The difference between the rotation speed and the reference rotation speed is stored in the ROM 13 in advance, but instead of them, the platen roller 7 (or the transport motor) in the case of the heat-sensitive tape 21 of each tape width is shown. The rotation speed of 32) may be stored in the ROM 13 in advance. In this case, the control circuit 12 controls the transport motor 32 to transport the heat-sensitive tape 21, and measures the rotation speed of the platen roller 7 (or the transport motor 32) based on the signal from the encoder 33 at this time. (Specification) The heat-sensitive tape 21 being conveyed is based on the rotation speed and the rotation speed of the platen roller 7 (or the transfer motor 32) in the case of the heat-sensitive tape 21 having each tape width stored in the ROM 13. The tape width may be derived. In this derivation, for example, the platen roller 7 (or specified) measured (specified) from the rotation speed of the platen roller 7 (or the transport motor 32) in the case of the heat-sensitive tape 21 having each tape width stored in the ROM 13. The rotation speed closest to the rotation speed of the transfer motor 32) is specified, and the tape width for the specified rotation speed is derived as the tape width of the heat-sensitive tape 21 during transfer. According to such a modification, the amount of data stored in the ROM 13 can be further reduced, and the amount of processing related to the derivation of the tape width can also be reduced.

Further, in the above-described embodiment, a specific example in which the printing device 1 has an input unit 3 and a display unit 6 is shown, but the printing device 1 does not have to have the input unit 3 and the display unit 6, and print data. Or print instructions, etc. may be received from an electronic device other than the printing device.

Further, in the above-described embodiment, an example in which a cycle for one rotation of the transfer motor 32 is used has been described with reference to FIG. 7, but the cycle to be used is not limited to this. Assuming that the cycle for one rotation of the transport motor 32 is a cycle corresponding to the pulse count number 4 of the encoder signal waveform, for example, a cycle corresponding to the pulse count number 2 of the encoder signal waveform is the cycle of the transport motor 32. A cycle other than the cycle for one rotation (the cycle corresponding to the pulse count number 4 of the encoder signal waveform) may be used. The same applies when the encoder 33 is provided on the rotating shaft of the platen roller 7.

Further, in the above-described embodiment, the reference rotation speed (rotational speed of the platen roller 7 (or the transfer motor 32) without the tape) and the platen roller 7 (or the transfer) with the heat-sensitive tape 21 of each tape width are used. A specific example in which the difference between the rotation speed of the motor 32) and the reference rotation speed is stored in the ROM 13 in advance is shown, but instead of them, the heat-sensitive tape is used as a table for deriving the tape width of the heat-sensitive tape 21. A table showing the time corresponding to each pulse count of the encoder signal waveform for each tape width of 21 may be stored in the ROM 13 in advance. In this case, the control circuit 12 controls the transfer motor 32 to transfer the heat-sensitive tape 21, and the heat-sensitive during transfer is based on the signal from the encoder 33 at this time and the table stored in the ROM 13. The tape width of the tape 21 may be derived.

FIG. 9 is a diagram illustrating a table in which the time corresponding to each pulse count number of the encoder signal waveform is shown for each tape width of the thermal tape 21. In this table, the time T corresponding to each of the pulse counts of 2, 4, and 6 is shown for each tape width of 6 mm, 12 mm, and 18 mm. According to this table, for example, when the time corresponding to the pulse count number 2 is T4 (or the time closest to T4) from the signal from the encoder 33, the tape width of the heat-sensitive tape 21 is determined from the table. It is derived that it is 12 mm.

Hereinafter, the inventions described in the scope of claims at the time of filing the application of the present application will be added.
[Appendix 1]
A transport unit that transports the print medium and
Control to derive the length in the width direction of the printed medium set in the transport unit based on the rotation speed of the transport unit when the print media set in the transport unit is transported to the transport unit. A printing device characterized by having a section.
[Appendix 2]
A storage unit in which the reference rotation speed of the transfer unit and the difference between the rotation speed of the transfer unit and the reference rotation speed when the printed medium having a length in each width direction is conveyed to the transfer unit is stored. Further preparation,
The control unit has a difference between the rotation speed of the transport unit when the printed medium set in the transport unit is transported to the transport unit and the reference rotation speed stored in the storage unit, and the said. Addendum 1 is characterized in that the widthwise length of the printed medium set in the transport section is derived based on the difference between the widthwise lengths stored in the storage unit and the printed medium. Printing equipment.
[Appendix 3]
Further, a storage unit is provided in which the rotation speed of the transport unit when the print medium having a length in each width direction is transported to the transport unit is stored.
The control unit has a rotation speed of the transport unit when the print medium set in the transport unit is transported to the transport unit, and a print medium having a length in each width direction stored in the storage unit. The printing apparatus according to Supplementary note 1, wherein the length in the width direction of the printed medium set in the transport unit is derived based on the rotation speed of the above.
[Appendix 4]
The printing apparatus according to Appendix 2, wherein the reference rotation speed is the rotation speed of the transport unit in a state where the print medium is not set in the transport unit.
[Appendix 5]
The measurement of the reference rotation speed and the measurement of the rotation speed of the transport unit when the printed medium set in the transport unit is transported to the transport unit are performed on the transport unit. The printing apparatus according to Appendix 2 or 4, wherein the energy control is the same.
[Appendix 6]
Derivation of the width of the printed medium, characterized in that the length in the width direction of the printed medium is derived based on the rotation speed of the conveyed unit when the printed medium set in the conveyed unit is conveyed to the conveyed unit. Method.
[Appendix 7]
The feature is that the processor executes a process of deriving the length in the width direction of the printed medium based on the rotation speed of the conveyed unit when the printed medium set in the conveyed unit is conveyed to the conveyed unit. Program to do.

1 Printing device 2 Device housing 2a Medium adapter housing 2b Outlet 3 Input section 4 Lid 4a Button 5 Window 6 Display section 7 Platen roller 8 Thermal head 8a Heat generation element 9 Full cutter 10 Half cutter 11 Photosensor 12 Control circuit 13 ROM
14 RAM
15 Display drive circuit 16 Head drive circuit 17 Thermistor 20 Medium adapter 21 Heat-sensitive tape 31 Transfer motor drive circuit 32 Transfer motor 33 Encoder 34 Cutter motor drive circuit 35 Cutter motor

Claims (7)

A transport unit that transports the print medium and
Control to derive the length in the width direction of the printed medium set in the transport unit based on the rotation speed of the transport unit when the print media set in the transport unit is transported to the transport unit. A printing device characterized by having a section. A storage unit in which the reference rotation speed of the transfer unit and the difference between the rotation speed of the transfer unit and the reference rotation speed when the printed medium having a length in each width direction is conveyed to the transfer unit is stored. Further preparation,
The control unit has a difference between the rotation speed of the transport unit when the printed medium set in the transport unit is transported to the transport unit and the reference rotation speed stored in the storage unit, and the said. The first aspect of the present invention is to derive the widthwise length of the printed medium set in the transport section based on the difference between the widthwise lengths stored in the storage unit and the printed medium. The printing device described. Further, a storage unit is provided in which the rotation speed of the transport unit when the print medium having a length in each width direction is transported to the transport unit is stored.
The control unit has a rotation speed of the transport unit when the print medium set in the transport unit is transported to the transport unit, and a print medium having a length in each width direction stored in the storage unit. The printing apparatus according to claim 1, wherein the length in the width direction of the printed medium set in the transport unit is derived based on the rotation speed of the above. The printing apparatus according to claim 2, wherein the reference rotation speed is the rotation speed of the transport unit in a state where the print medium is not set in the transport unit. The measurement of the reference rotation speed and the measurement of the rotation speed of the transport unit when the printed medium set in the transport unit is transported to the transport unit are performed on the transport unit. The printing apparatus according to claim 2 or 4, wherein the energy control is the same. Derivation of the width of the printed medium, characterized in that the length in the width direction of the printed medium is derived based on the rotation speed of the conveyed unit when the printed medium set in the conveyed unit is conveyed to the conveyed unit. Method. The feature is that the processor executes a process of deriving the length in the width direction of the printed medium based on the rotation speed of the conveyed unit when the printed medium set in the conveyed unit is conveyed to the conveyed unit. Program to do.

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