JP2017035856A - Printer and control method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer suppressing occurrence of adverse effects due to inconsistency between a paper width value indicated by a setting value and a paper width value of a roll sheet stored.SOLUTION: A printer 1 comprises: a printing section 41 performing printing onto a roll sheet; a storage section storing the roll sheet; a paper guide regulating a position of the roll sheet; a paper guide sensor 46 outputting different detection values according to a state of the paper guide; a memory section 43 storing a paper width setting value indicating a paper width of the roll sheet; and a control section 40 causing the printing section 41 to perform the printing based on the paper width setting value stored by the memory section 43, detecting the state of the paper guide based on the detection value of the paper guide sensor 46 with activation or resetting as a trigger, changing the paper width setting value to a value indicating 58 mm when the paper guide is in a state of being attached to the storage section and the paper width setting value is a value indicating 80 mm, and, on the other hand, not changing the setting value irrespective of the value of the paper width setting value when the paper guide is in a state of not being attached to the storage section.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a printing apparatus and a printing apparatus control method.

  Conventionally, in a printing device (recording paper width detection device) that can store roll paper, a paper guide (partition plate) that regulates the position of roll paper with different paper widths can be attached to the recording medium storage portion (roll paper storage portion) It is known that the width of the roll paper is detected by detecting the state of the paper guide by a sensor (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 4-77471

In the printing apparatus described above, by detecting the paper width based on the detection value of the sensor at a predetermined timing, it is possible to efficiently perform detection while suppressing power consumption. In this case, the printing apparatus records a setting value indicating the detected paper width in a setting file or the like, and executes processing related to printing based on the setting value. However, in the above case, due to the time lag between the timing of detecting the paper width based on the detection value of the sensor and the timing of attaching the paper guide, the value of the paper width indicated by the set value and the actual size stored in the printing apparatus. In some cases, the roll width of the roll paper does not match. Since the printing apparatus executes processing related to printing based on the setting value, printing is performed in a state where the paper width value indicated by the setting value does not match the paper width value of the roll paper actually stored in the printing apparatus. When the process related to the above is executed, the mechanism of the printing apparatus and the printing result may be adversely affected due to the mismatch of values.
The present invention has been made in view of the above-described circumstances, and suppresses adverse effects caused by a mismatch between the paper width value indicated by the set value and the paper width value of the roll paper accommodated in the printing apparatus. The purpose is to do.

In order to achieve the above object, the present invention provides a printing apparatus capable of storing roll paper, wherein a printing unit that prints on the roll paper, a storage unit that stores the roll paper, and a paper width of the roll paper. A setting that indicates the paper width of the roll paper, a paper guide that regulates the position of the roll paper in the storage unit, a sensor that detects the attachment state of the paper guide, depending on whether or not the attachment is appropriate or the attachment position. A storage unit that stores a value, and a printing unit that causes the printing unit to print based on the setting value stored in the storage unit, and the state of attachment of the paper guide that is detected by the sensor using a predetermined event as a trigger. In the case of an attachment state corresponding to the roll paper having a paper width of 1, when the set value is a value indicating a paper width other than the first paper width, the set value is changed to a value indicating the first paper width. On the other hand, when the detected attachment state of the paper guide is an attachment state corresponding to the roll paper having a paper width other than the first paper width, the setting value is not changed regardless of the setting value. And a section.
According to the configuration of the present invention, it is possible to suppress an adverse effect caused by a mismatch between the paper width value indicated by the set value and the paper width value of the roll paper accommodated in the printing apparatus.

Further, the present invention is a case where the attachment state of the paper guide detected by the sensor using a predetermined event as a trigger is an attachment state corresponding to the roll paper having the first paper width. When the set value is a value indicating a second paper width larger than the first paper width, the set value is set to a value indicating the first paper width, while the detected state of the paper guide is detected. In the attachment state corresponding to the roll paper having the second paper width, the setting value is not changed regardless of the value of the setting value.
According to the configuration of the present invention, it is possible to suppress an adverse effect caused by a mismatch between the paper width value indicated by the set value and the paper width value of the roll paper accommodated in the printing apparatus.

In the present invention, the setting value stored in the storage unit can be changed by an instruction by a control command transmitted by an external device or a setting of a software switch or a hardware switch, and a value indicating the first paper width. The setting value changed to is transmitted to the external device.
According to the configuration of the present invention, the user can intentionally change the setting value. Further, the external device can know the first paper width detected and set.

Further, the present invention includes a transport unit that transports the roll paper by sandwiching the roll paper by a thermal head and a platen roller, and the control unit is configured to reduce the platen roller as the paper width indicated by the set value is smaller. The motor that drives the motor has a high torque.
According to the configuration of the present invention, the platen roller is driven as the paper width indicated by the setting value is smaller due to the mismatch between the paper width value indicated by the setting value and the paper width value of the roll paper accommodated in the printing apparatus. The adverse effect caused by the high torque of the motor is reduced.

Furthermore, the present invention is characterized in that, when the printing unit prints a character string, the control unit changes a mode of the number of characters printed on one line according to a paper width indicated by the setting value. To do.
According to the configuration of the present invention, printing is performed on one line according to the paper width indicated by the setting value due to the mismatch between the paper width value indicated by the setting value and the paper width value of the roll paper accommodated in the printing apparatus. It is possible to suppress adverse effects caused by changing the mode of the number of digits of characters to be performed.

In order to achieve the above object, the present invention provides a printing apparatus that can store roll paper, a printing unit that prints on the roll paper, a storage unit that stores the roll paper, The paper guide that regulates the position of the roll paper in the storage unit according to the presence or absence of attachment according to the paper width, or the attachment position, the sensor that detects the attachment state of the paper guide, and the paper width of the roll paper A storage unit that stores a set value to be displayed, and a printing unit that causes the printing unit to print based on the set value stored in the storage unit, and that the attachment state of the paper guide detected by the sensor using a predetermined event as a trigger is In the case of an attachment state corresponding to the roll paper having a predetermined paper width, when the set value is a value indicating a paper width other than the predetermined paper width, the set value indicates the predetermined paper width. Change to a value, then it is characterized by comprising a control unit which does not change the set value.
According to the configuration of the present invention, it is possible to suppress an adverse effect caused by a mismatch between the paper width value indicated by the set value and the paper width value of the roll paper accommodated in the printing apparatus.

In order to achieve the above object, the present invention can accommodate roll paper, and is in accordance with a printing unit that prints on the roll paper, a storage unit that stores the roll paper, and a paper width of the roll paper. A paper guide that regulates the position of the roll paper in the storage unit depending on whether or not the paper is attached, a sensor that detects a state of attachment of the paper guide, and a setting value that indicates a paper width of the roll paper. A control method for a printing apparatus comprising: a storage unit that stores data; and a control unit that causes the printing unit to print based on the setting value stored in the storage unit, wherein the control unit triggers a predetermined event as the trigger. The attachment state of the paper guide detected by the sensor is an attachment state corresponding to the roll paper having the first paper width, and the set value is a paper width other than the first paper width. In the case of the value, the setting value is changed to a value indicating the first paper width, while the detected attachment state of the paper guide is an attachment amount corresponding to the roll paper having a paper width other than the first paper width. In the case of a state, the set value is not changed regardless of the value of the set value.
According to the configuration of the present invention, it is possible to suppress an adverse effect caused by a mismatch between the paper width value indicated by the set value and the paper width value of the roll paper accommodated in the printing apparatus.

In order to achieve the above object, the present invention can accommodate roll paper, and is in accordance with a printing unit that prints on the roll paper, a storage unit that stores the roll paper, and a paper width of the roll paper. A paper guide that regulates the position of the roll paper in the storage unit depending on whether or not the paper is attached, a sensor that detects a state of attachment of the paper guide, and a setting value that indicates a paper width of the roll paper. A control method of a printing apparatus comprising: a storage unit that stores data; and a control unit that causes the printing unit to print based on the setting value stored in the storage unit, wherein the control unit triggers a predetermined event The attachment state of the paper guide detected by the sensor is an attachment state corresponding to the roll paper having a predetermined paper width, and the set value is a paper width other than the predetermined paper width. For a value indicating, the set value is changed to a value indicating the predetermined width, later, characterized in that it does not change the set value.
According to the configuration of the present invention, it is possible to suppress an adverse effect caused by a mismatch between the paper width value indicated by the set value and the paper width value of the roll paper accommodated in the printing apparatus.

1 is a perspective view of a printing apparatus according to an embodiment. FIG. 3 is a perspective view of the printing apparatus with the cover open. FIG. 3 is a diagram illustrating an internal structure of a printing apparatus. FIG. 2 is a block diagram illustrating a functional configuration of a printing apparatus and a host computer. 6 is a flowchart illustrating operations of a host computer and a printing apparatus. 6 is a flowchart showing operations of the printing apparatus and the host computer. 6 is a flowchart showing the operation of the printing apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a printing apparatus 1 according to the present embodiment. In the following description, the up / down, left / right, and front / rear directions are in accordance with the directions indicated by arrows in FIG.
The printing apparatus 1 has a function of storing roll paper R (FIG. 3), printing an image on the stored roll paper R, cutting the roll paper R on which the image is printed, and issuing a piece of paper. For example, the printing apparatus 1 is provided at a cashier counter provided in a retail store such as a supermarket or a convenience store, a restaurant such as a tavern or a coffee shop, and is used as an apparatus that issues a receipt according to a transaction.

As shown in FIG. 1, the printing apparatus 1 includes a substantially cubic housing 10.
On the front surface 10 a of the housing 10, a power switch 12 that turns on / off the power of the printing apparatus 1 is provided.
In front of the center portion of the upper surface 10 b of the housing 10, a paper discharge port 11 that discharges the roll paper R stored in the storage unit 20 of the printing apparatus 1 is provided.
On the upper surface 10 b of the housing 10, a panel 13 is provided on the left rear side of the paper discharge outlet 11. The panel 13 is provided with a push-down type auto feed switch 14 that instructs conveyance of the roll paper R. While the auto feed switch 14 is pressed, the roll paper R is automatically conveyed in the conveyance direction H1 (FIG. 3). The panel 13 is provided with an LED display unit 15. The LED display unit 15 includes a plurality of LEDs, and each LED is turned on / off in a predetermined manner to notify information related to the printing apparatus 1 such as an operation mode of the printing apparatus 1 and an error state.
A lever 16 that opens the cover 18 is provided in front of the panel 13. When the lever 16 is pushed down when the cover 18 is in the closed state, the cover 18 shifts from the closed state to the open state.
The cover 18 is a member that opens and closes an opening 22 (FIG. 2) for inserting and removing the roll paper R into and from a housing portion 20 (FIG. 2) provided inside the housing 10.

FIG. 2 is a perspective view of the printing apparatus 1 when the cover 18 is open.
As shown in FIG. 2, when the cover 18 shifts to the open state, the accommodating portion 20 formed inside the housing 10 is exposed. The accommodating portion 20 is a cavity that can accommodate the roll-shaped roll paper R. The roll paper R is put into and out of the accommodating portion 20 through the opening 22 opened and closed by the cover 18.
As shown in FIG. 2, a platen roller 23 is provided at the tip of the cover 18. A thermal head 24 is provided below the paper discharge port 11 and at a position facing the platen roller 23 when the cover 18 is closed.
The platen roller 23 is a roller that conveys the roll paper R. The platen roller 23 rotates in a predetermined direction while sandwiching the thermal head 24 and the roll paper R, and conveys the roll paper R in the conveyance direction H1 according to the rotation. The conveyance of the roll paper R by the platen roller 23 and the thermal head 24 will be described later.
The thermal head 24 is a thermal print head in which a plurality of heat generating elements are arranged in a direction intersecting the transport direction H1 of the roll paper R, and dots are formed on the roll paper R, which is thermal paper, by the heat generating elements. Thus, an image is printed on the roll paper R.
As shown in FIG. 2, a cutter unit 28 is provided at the front portion of the housing 10. In the cutter unit 28, the movable blade moves relative to the fixed blade, and the roll paper R is cut by these blades.
In addition, a control board on which a CPU, a memory, and other control circuits are mounted, a power supply unit, and other mechanisms and components are provided in the front portion inside the housing 10.

  The printing apparatus 1 according to this embodiment includes a roll paper R (hereinafter referred to as “58 mm roll paper”) having a width of 58 mm (first paper width) and a roll paper R (hereinafter referred to as “58 mm roll paper”). , Which is referred to as “80 mm roll paper”), and operation is guaranteed for printing on these two types of width roll paper R. The storage unit 20 of the printing apparatus 1 can store 58 mm roll paper and 80 mm roll paper as the roll paper R.

  When the 80 mm roll paper is stored in the storage unit 20, the paper guide 25 (described later) is removed from the storage unit 20. When the 80 mm roll paper is stored in the storage unit 20 with the paper guide 25 removed, the storage unit 20 is formed by the right side surface 20r that is the right side surface of the storage unit 20 and the left side surface 20l that is the left side surface. The position in the left-right direction of the 80 mm roll paper is regulated. This prevents the roll paper R from shifting in the left-right direction during the printing of the image on the roll paper R, thereby preventing the print quality from deteriorating.

When 58 mm roll paper is stored in the storage unit 20, the paper guide 25 is attached to the left end T <b> 1 inside the storage unit 20.
When the 58 mm roll paper is stored in the storage unit 20 with the paper guide 25 attached, the right side 20r of the storage unit 20 and the paper guide 25 facing the right side 20r in the state attached to the storage unit 20 The position in the left-right direction of the 58 mm roll paper in the storage unit 20 is regulated by the surface 25a. This prevents the roll paper R from shifting in the left-right direction during the printing of the image on the roll paper R, thereby preventing the print quality from deteriorating.

The paper guide 25 is positioned at the left end T <b> 1 of the storage portion 20 by being locked to a locking portion provided in the storage portion 20.
More specifically, as shown in FIG. 2, the paper guide 25 is provided with a protrusion 26 protruding forward at the front portion and a locking claw 27 protruding downward at the lower portion.
Further, in the accommodating portion 20, an insertion hole (not shown) through which the protrusion 26 can be inserted is provided at a position corresponding to the position of the protrusion 26 when the paper guide 25 is positioned at the left end T 1. A locking groove (not shown) is provided at a position corresponding to the position of the locking claw 27 when is positioned at the left end T1. In the present embodiment, the insertion hole and the locking groove function as a “locking portion”.
When the paper guide 25 is attached to the storage unit 20, first, the protrusion 26 is inserted into the insertion hole of the storage unit 20, and the movement of the paper guide 25 in the left-right direction is restricted. Next, the main body of the paper guide 25 is pushed downward while rotating with the protrusion 26 as a fulcrum in a state where the protrusion 26 is inserted into the insertion hole of the housing portion 20. As the paper guide 25 moves downward, the claw portion 27a of the locking claw 27 comes into contact with the edge of the locking groove, elastically deforming the locking claw 27 in the direction of the arrow Y1, and the paper guide 25 When the main body moves further downward, the claw portion 27a and the locking groove are elastically locked. When the claw portion 27a is locked in the locking groove, the paper guide 25 is locked to the locking portion by the protrusion 26 and the locking claw 27, and the paper guide 25 is moved up and down, front and rear, and left and right. And the paper guide 25 is positioned at the left end T1.

When the cover 18 is in the open state, the paper guide 25 is in a state where the projection 26 is inserted into the insertion hole, while the locking claw 27 is not locked in the locking groove (in the locking portion). In a state where it is not locked, it may be in a state of being provided in the accommodating portion 20. For example, the user manually releases the locking state of the locking claw 27 in the locking groove, or some impact is applied to the printing apparatus 1 such as dropping of the printing apparatus 1 or collision of an object with the printing apparatus 1. This is a case where the locking state of the locking claw 27 in the locking groove is released accidentally.
In the printing apparatus 1 according to the present embodiment, when the paper guide 25 is in the above state and the cover 18 shifts from the open state to the closed state, the cover 18 and the paper guide 25 come into contact with each other according to the rotation of the cover 18. The cover 18 pushes down the paper guide 25 downward, and the locking claw 27 is locked in the locking groove. That is, even if the paper guide 25 is in the above state, the paper guide 25 is automatically locked to the locking portion when the cover 18 is shifted from the open state to the closed state.

FIG. 3 is a diagram schematically showing the internal structure of the printing apparatus 1 in a mode suitable for explanation.
In the following description, regarding the roll paper R, a roll-shaped portion accommodated in the accommodating portion 20 is expressed as a roll paper main body, and a portion fed out from the roll paper main body is expressed as a transport roll paper.
In the printing apparatus 1, the transport roll paper is fed out from the roll paper main body stored in the storage unit 20 and transported in the transport direction H <b> 1. As shown in FIG. 2, a platen roller 23 and a thermal head 24 are provided facing each other downstream in the transport direction H <b> 1 of the storage unit 20. The platen roller 23 conveys the transport roll paper in the transport direction H1 by rotating in the arrow Y2 direction while sandwiching the thermal head 24 and the transport roll paper. The thermal head 24 prints an image by forming dots with heating elements on the transport roll paper transported in the transport direction H1.
As shown in FIG. 3, a cutter unit 28 is provided downstream of the platen roller 23 and the thermal head 24 in the transport direction H <b> 1. In the cutter unit 28, the movable blade moves relative to the fixed blade, and these blades intersect to cut the transport roll paper. The transport roll paper cut by the cutter unit 28 is discharged from the paper discharge outlet 11 as a piece of paper.

  FIG. 4 is a block diagram illustrating a functional configuration of the printing apparatus 1 and the host computer 2 (external apparatus) that controls the printing apparatus 1. A printing system 3 is configured by the printing apparatus 1 and the host computer 2.

As shown in FIG. 4, the printing apparatus 1 includes a control unit 40, a printing unit 41, a transport unit 42, a storage unit 43, a communication unit 44, an input unit 45, and a paper guide sensor 46 (sensor). The cover sensor 47 and the cutting part 48 are provided.
The control unit 40 includes a CPU, ROM, RAM, and other peripheral circuits, and controls the printing apparatus 1 by, for example, the CPU reading and executing a control program.
The printing unit 41 includes the above-described thermal head 24, a drive circuit that drives the thermal head 24, and other mechanisms related to printing on roll paper, and prints an image on the roll paper R under the control of the control unit 40.
The transport unit 42 includes the above-described platen roller 23, a transport motor that rotates the platen roller 23, a motor driver that drives the transport motor, and other mechanisms related to transport of the roll paper R. The control unit 40 controls the roll paper Carry R.
The storage unit 43 includes a non-volatile memory such as EERPOM and stores various data. The storage unit 43 stores a setting file 431. The setting file 431 will be described later.
The communication unit 44 includes a communication module corresponding to a predetermined communication standard such as USB and RS-232, and a mechanism related to communication with other external devices (host computer 2), and performs predetermined communication under the control of the control unit 40. Communicate according to the standard. Note that communication with an external device may be performed by wire or wirelessly.
The input unit 45 is connected to the operation switch such as the power switch 12 or the auto feed switch 14 described above, detects an operation on the operation switch, and outputs it to the control unit 40. Based on the input from the input unit 45, the control unit 40 executes processing corresponding to the operation performed on the operation switch.

The paper guide sensor 46 is a mechanical sensor that outputs different detection values depending on whether or not the paper guide 25 is attached to the storage unit 20. The state in which the paper guide 25 is attached to the storage unit 20 refers to a state in which the paper guide 25 is locked to the locking unit of the storage unit 20.
The paper guide sensor 46 will be described in detail. The paper guide sensor 46 includes a protrusion that is urged upward in the locking groove in which the locking claw 27 of the paper guide 25 is locked. When the locking claw 27 of the paper guide 25 is locked in the locking groove of the accommodating portion 20, the protruding portion is pressed by the locking claw 27, and the protruding portion electrically turns on the mechanical switch. A signal indicating that the paper guide 25 is attached from the paper guide sensor 46 is output to the control unit 40 as a detection value. On the other hand, when the locking claw 27 of the paper guide 25 is not in the locked state in the locking groove of the housing portion 20, the pressed state is released and the paper guide 25 is attached from the paper guide sensor 46. A signal indicating that the state is not set is output to the control unit 40 as a detection value. When the number of paper widths to be set is large, a plurality of locking grooves may be formed at corresponding positions, and a plurality of paper guide sensors 46 may be installed so as to detect the locking claws 27 of the corresponding paper guides 25 respectively. .
The control unit 40 detects whether or not the paper guide sensor 46 is attached to the storage unit 20 based on the detection value input from the paper guide sensor 46.

The cover sensor 47 is a sensor that outputs different detection values depending on whether the cover 18 is open or closed. When the cover 18 is in the open state, the cover sensor 47 outputs a signal indicating that the cover 18 is in the open state to the control unit 40 as a detection value. When the cover 18 is in the closed state, the cover 18 is in the closed state. A signal indicating this is output to the control unit 40 as a detection value.
The control unit 40 detects whether the cover 18 is open or closed based on the detection value input from the cover sensor 47.

  The cutting unit 48 includes the above-described cutter unit 28, a cutter motor that moves the movable blade of the cutter unit 28, a motor driver that drives the cutter motor, and other mechanisms for cutting the roll paper R. The roll paper R is cut by control.

  The host computer 2 is a computer that controls the printing apparatus 1 by transmitting a control command to the printing apparatus 1. When the printing apparatus 1 is used as an apparatus for issuing a receipt at a checkout counter, the host computer 2 generates a control command that instructs the issuance of a receipt on which information related to the payment is printed based on the checkout performed at the checkout counter. Then, the data is transmitted to the printing apparatus 1 to cause the printing apparatus 1 to issue a receipt.

As shown in FIG. 4, the host computer 2 includes a host control unit 50, a host input unit 51, a host display unit 52, a host storage unit 53, and a host communication unit 54.
The host control unit 50 includes a CPU, ROM, RAM, and other peripheral circuits, and controls the host computer 2 by, for example, the CPU reading and executing a control program.
The host input unit 51 detects an operation on an input device such as an operation switch provided in the host computer 2 or a keyboard connected to the host computer 2 and outputs the operation to the control unit 40. Based on the input from the host input unit 51, the control unit 40 executes processing corresponding to the operation performed by the user.
The host display unit 52 includes a display panel such as a liquid crystal display panel and other display means, and displays various images on the display means under the control of the host control unit 50.
The host storage unit 53 includes a nonvolatile memory and stores various data.
The host communication unit 54 communicates with the printing apparatus 1 according to a predetermined communication standard under the control of the host control unit 50.

Next, a basic operation of the printing apparatus 1 when printing an image on the roll paper R will be described.
FIG. 5 is a flowchart illustrating operations of the host computer 2 and the printing apparatus 1 when the printing apparatus 1 prints an image on the roll paper R under the control of the host computer 2. FIG. 5A shows the operation of the host computer 2, and FIG. 5B shows the operation of the printing apparatus 1.

As shown in FIG. 5A, the host control unit 50 of the host computer 2 generates a control command for instructing printing of an image on the roll paper R (step SA1). Here, a predetermined application and a printer driver are installed in the host computer 2. The predetermined application has a function of outputting information regarding an image to be printed by the printing apparatus 1 to the printer driver. The printer driver also has a function of generating a control command corresponding to the command system of the printing apparatus 1 based on information input from a predetermined application. In step SA1, the host control unit 50 generates a control command by a predetermined application and the function of the printer driver.
Next, the host control unit 50 controls the host communication unit 54 to transmit the generated control command to the printing apparatus 1 (step SA2).

As shown in FIG. 5B, the control unit 40 of the printing apparatus 1 controls the communication unit 44 to receive a control command transmitted by the host computer 2 (step SB1).
Next, the control unit 40 refers to the setting file 431 stored in the storage unit 43 (step SB2).

The setting file 431 is a file in which setting values relating to printing (for example, setting values relating to printing speed and setting values relating to print density), setting values relating to communication, and other setting values relating to the printing apparatus 1 are recorded. The control unit 40 reflects the setting value recorded in the setting file 431 and executes various processes.
In the present embodiment, a setting value indicating the paper width of the roll paper R (hereinafter referred to as “paper width setting value”) is recorded in the setting file 431 as a setting value relating to printing.

Next, based on the control command received in step SB1, the control unit 40 reflects the setting value recorded in the setting file 431 and controls the printing unit 41 to print an image on the roll paper R.
In particular, the control unit 40 executes the following processing based on the paper width setting value recorded in the setting file 431 when the printing unit 41 is controlled.
That is, when the paper width setting value is 58 mm, the control unit 40 increases the torque of the transport motor that rotates the platen roller 23 when transporting the roll paper R, compared to the value indicating 80 mm. To do. This is due to the following reason. That is, when the paper width of the roll paper R is 58 mm, compared with the case of 80 mm, the portion where the roll paper R is interposed between the platen roller 23 and the thermal head 24 is small, and the platen roller 23 and the thermal head 24 are Large direct contact area. For this reason, when the paper width of the roll paper R is 58 mm, the frictional force generated in the platen roller 23 when the platen roller 23 rotates is larger than in the case of 80 mm.
As described above, the control unit 40 of the printing apparatus 1 according to the present embodiment, when the paper width setting value is a value indicating 58 mm, compares the platen when transporting the roll paper R as compared with the value indicating 80 mm. The torque of the transport motor that rotates the roller 23 is increased. Due to such a configuration, when the paper width indicated by the paper width setting value is 80 mm, and the roll paper R actually accommodated in the printing apparatus 1 has a paper width of 58 mm, the following situation may occur. That is, there is a possibility that the torque necessary for transporting the roll paper R at a predetermined speed cannot be obtained, and the print quality is deteriorated. In addition, the load applied to the transport motor increases, and the transport motor may step out. Further, the rotation of the transport motor may be slowed to slow down the printing speed.

Further, when printing a character string, the control unit 40 changes the line feed mode of the character string according to the paper width indicated by the paper width setting value. Details will be described below.
The storage unit 43 stores a font table in advance. The font table is a table that collectively stores font data (bitmap data, scalable font data, etc.) for each character.
When the character string is printed, the control unit 40 refers to the font table and acquires the font data of each character constituting the character string. In the control command transmitted by the host computer 2, the character string is expressed as a combination of character codes of characters constituting the character string, and the control unit 40 stores the character code and font data in association with each other. Based on the above, the respective font data of the characters constituting the character string are obtained.
Next, the control unit 40 expands font data of a character string for one line in the buffer. When the font data is expanded in the buffer, the control unit 40 adjusts the number of font data that can be expanded in the buffer according to the paper width setting value recorded in the setting file 431. For simplicity, for example, 10 characters (number of digits) per line can be printed on a 58 mm roll paper R, and 15 characters per line can be printed on an 80 mm roll paper R. Assume that characters (number of digits) can be printed. In this case, when the paper width setting value recorded in the setting file 431 indicates 58 mm, the control unit 40 sets the number of font data that can be developed in the buffer to 10 and when the paper width setting value indicates 80 mm, the control unit 40 The number of font data that can be expanded to 15 is assumed to be 15. For example, when printing a character string of 20 characters, when the paper width setting value indicates 58 mm, the control unit 40 expands the font data for 10 characters into the buffer, and then converts the font data into the buffer expanded into the buffer. Based on this, after printing 10 characters on one line, the remaining 10 characters of font data are expanded in a buffer, and 10 characters are printed on the next line based on the font data expanded in the buffer.
By performing the above processing, line feed of an appropriate character string according to the paper width is performed, and loss of information due to printing of the character string without line break is prevented.

  As described above, when printing a character string, the control unit 40 of the printing apparatus 1 according to the present embodiment changes the line feed mode of the character string according to the paper width indicated by the paper width setting value. Due to such a configuration, when the paper width value of the roll paper R actually stored in the printing apparatus 1 does not match the paper width value indicated by the paper width setting value recorded in the setting file 431, the following situation occurs. It can happen. That is, when the paper width indicated by the paper width setting value is 80 mm and the paper width of the roll paper R actually accommodated in the printing apparatus 1 is 58 mm, printing is performed by protruding the paper width, and the necessary line feed is not performed. May disappear. On the other hand, when the paper width indicated by the paper width setting value is 58 mm and the paper width of the roll paper R actually accommodated in the printing apparatus 1 is 80 mm, a line feed is performed leaving a margin, and an unnecessary line feed is performed. Print quality may be reduced.

  Note that the default value of the paper width setting value recorded in the setting file 431 is a value indicating 80 mm. Therefore, as will be described later, when the paper width setting value is changed based on the detection value of the paper guide sensor 46, when the paper width setting value is changed based on an instruction by the control command, or when the switch The paper width setting value is a value indicating 80 mm except when the paper width setting value is changed based on an instruction by operation.

Incidentally, as described above, the printing apparatus 1 according to the present embodiment can accommodate 58 mm roll paper and 80 mm roll paper as the roll paper R.
Then, an entity that provides the printing apparatus 1 (for example, a company that manufactures and sells the printing apparatus 1) informs the user in advance that the printing quality of the printing apparatus 1 is not guaranteed in the following cases. The following case is a case where the printing apparatus 1 is once used as an apparatus for printing on 58 mm roll paper and then the printing apparatus 1 is used as an apparatus for printing on 80 mm roll paper. This is due to the following reason.
That is, when the printing apparatus 1 is used as an apparatus for printing on 58 mm roll paper, the platen roller 23 and the thermal head 24 are deteriorated with age according to use. Here, the platen roller 23 is a roller having a length sufficient to transport 80 mm roll paper in a direction intersecting with the transport direction H1. Accordingly, the platen roller 23 includes a portion that contacts the 58 mm roll paper and a portion that does not contact the 58 mm roll paper, and the degree of aging of each portion varies with time. The thermal head 24 is a print head in which a plurality of heating elements extend in a length sufficient to form dots on 80 mm roll paper in a direction crossing the transport direction H1. Accordingly, the platen roller 23 has a portion that is used and a portion that is not used when forming dots on the 58 mm roll paper, and the degree of aging of each portion varies with time.
Based on the above, when the printing apparatus 1 is used as an apparatus for printing on 58 mm roll paper and then the printing apparatus 1 is used as an apparatus for printing on 80 mm roll paper, the partial aging of the platen roller 23 and the thermal head 24 is performed. Due to the difference in the degree of deterioration, there is a possibility that the meandering of the transport of the roll paper R and the non-uniformity of the state of the dots formed on the roll paper R may occur, resulting in a decrease in print quality.
For the above reasons, when the printing apparatus 1 is used as an apparatus for printing on 58 mm roll paper and then the printing apparatus 1 is used as an apparatus for printing on 80 mm roll paper, the user is notified in advance that the print quality is not guaranteed. The
Therefore, if the user once uses the printing apparatus 1 as an apparatus for printing on 58 mm roll paper, it is assumed that the user continues to use the printing apparatus 1 as an apparatus for printing on 58 mm roll paper.

Here, as described above, when 58 mm roll paper is stored in the printing apparatus 1, the paper guide 25 is attached to the storage unit. The paper guide 25 is not fixedly attached to the storage unit 20 in a manner that is difficult to remove from the storage unit 20 by screws, welding, adhesion, or other means, but is locked by the locking unit. 20 is attached. Thereby, the reduction of the number of parts, the reduction of the manufacturing cost associated with the reduction of the number of parts, the simplification of the work related to the attachment of the paper guide 25, and the like are realized. On the other hand, the paper guide 25 is not fixedly attached to the housing portion 20 in a manner that is difficult to remove from the housing portion 20 by screws, welding, adhesion, or other means. When there is some impact on the printing apparatus 1 such as a collision of an object with 1, the locking state of the locking claw 27 in the locking groove may be accidentally released.
The printing apparatus 1 according to the present embodiment executes processing corresponding to a situation that may occur in such a case. Hereinafter, the operation of the printing apparatus 1 will be described together with situations that may occur when such a case occurs.

FIG. 6 shows the initial processing executed by the printing apparatus 1 when starting and resetting (restarting), and the initial processing executed by the printing apparatus 1 according to the starting and resetting. 5 is a flowchart illustrating processing executed by the host computer 2. FIG. 6A shows the operation of the printing apparatus 1, and FIG. 6B shows the operation of the host computer 2.
Note that the flowchart in FIG. 6A illustrates a part of the initial process performed by the printing apparatus 1.

As shown in FIG. 6A, the control unit 40 of the printing apparatus 1 starts activation or reset by using a power-on instruction, a reset instruction, and other events as triggers (step SC1). .
When starting or resetting is started, the control unit 40 detects the state of the paper guide 25 (attachment state of the paper guide 25) based on the detection value input from the paper guide sensor 46 (step SC2).
As described above, in the present embodiment, activation of the control unit 40 of the printing apparatus 1 when the power is turned on or reset (reactivation) by the reset switch or reset signal when the power is turned on is used as a trigger. Detect state. Thereby, based on the detection value of the paper guide sensor 46, compared with the structure which monitors the state of the paper guide 25 continuously, it can detect efficiently, suppressing power consumption.

Next, the control unit 40 determines whether or not the paper guide 25 is attached based on the detection result of step SC2 (step SC3).
When the paper guide 25 is attached (step SC3: YES), when the paper width setting value recorded in the setting file 431 is a value indicating 80 mm, the control unit 40 changes the value to a value indicating 58 mm. On the other hand, if the paper width setting value is a value indicating 58 mm, the paper width setting value is not changed, and the state where the paper width setting value is a value indicating 58 mm is maintained (step SC4). Thereafter, the control unit 40 proceeds to step SC6.
When the paper guide 25 is attached to the storage unit 20 by the process of step SC4, in other words, 58 mm roll paper is stored in the storage unit 20, and the printing apparatus 1 is used as a device for printing on 58mm roll paper. In this case, the value of the paper width of the roll paper R actually accommodated in the printing apparatus 1 and the value of the paper width setting value recorded in the setting file 431 are not different, and are caused by a mismatch between these values. Thus, the predetermined situation described above does not occur.

On the other hand, when the paper guide 25 is not attached (step SC3: NO), the control unit 40 does not change the paper width setting value regardless of the paper width setting value recorded in the setting file 431 (step SC5). ). Therefore, this state is maintained when the paper width setting value is 58 mm. Thereafter, the control unit 40 proceeds to step SC6.
The reason why the process of step SC5 is performed is as follows.
That is, as described above, the default value of the paper width setting value is a value indicating 80 mm. Therefore, the paper width setting value being a value indicating 58 mm means that the process of step SC4 was performed in the past and the paper width setting value was changed based on the detection value of the paper guide sensor 46, or will be described later. As described above, the paper width setting value is changed based on the instruction by the control command or the instruction by the operation of the switch. As described above, when the printing apparatus 1 is changed from a state using 58 mm roll paper to a state using 80 mm roll paper, the printing quality is not guaranteed. When used as a device for printing on 58 mm roll paper, it is continuously used as a device for printing on 58 mm roll paper.
In consideration of the above, when the paper guide 25 is not attached and the paper width setting value is a value indicating 58 mm, the printing apparatus 1 such as a drop of the printing apparatus 1 or an object collision with the printing apparatus 1 may be used. It is assumed that the cover 18 is activated or reset is started while the cover 18 is in the open state when there is some impact and the lock state of the lock claw 27 in the lock groove is released.
In this case, since the printing apparatus 1 is continuously used as an apparatus for printing on 58 mm roll paper, the paper guide 25 is attached to the storage unit 20 by the user or the cover 18 before the printing process is started. With the transition from the open state to the closed state, the paper guide 25 is attached to the storage unit 20.
For the reasons described above, in step SC5, the control unit 40 sets the paper width setting value regardless of the value of the paper width setting value recorded in the setting file 431 even when the paper guide 25 is not attached. Not going to change. That is, when the paper guide 25 is not attached, the control unit 40 does not change the paper width setting value even if the paper width setting value is a value indicating 58 mm. Thereby, it is possible to suppress the difference between the paper width value of the roll paper R actually accommodated in the printing apparatus 1 and the value of the paper width setting value recorded in the setting file 431, which is caused by a mismatch between these values. Occurrence of the predetermined situation described above can be suppressed.

  In step SC <b> 6, the control unit 40 controls the communication unit 44 to transmit data notifying that activation or reset has been performed to the host computer 2.

As shown in FIG. 6B, the host control unit 50 of the host computer 2 controls the host communication unit 54 to receive the data transmitted by the printing apparatus 1 in step SC6 (step SD1).
Next, the host control unit 50 recognizes that the printing apparatus 1 has been activated or reset based on the data received in step SD1, and controls the host communication unit 54 to set the setting file of the printing apparatus 1. Data for requesting a response to the paper width setting value (set value after change) recorded in 431 is transmitted to the printing apparatus 1 (step SD2).

As shown in FIG. 6A, the control unit 40 of the printing apparatus 1 controls the communication unit 44 to receive the data transmitted by the host computer 2 in step SD2 (step SC7).
Next, the control unit 40 acquires the paper width setting value with reference to the setting file 431 based on the data received in step SC7, and controls the communication unit 44 to transmit the data including the acquired paper width setting value to the host computer. 2 (step SC8).

  As shown in FIG. 6B, the host control unit 50 of the host computer 2 controls the host communication unit 54 to receive the data transmitted by the printing apparatus 1 in step SC8, and the paper width included in the received data. The set value is stored in a predetermined storage area (step SD3).

By performing the processing as described above, the value of the paper width setting value recorded in the setting file 431 of the printing apparatus 1 matches the value of the paper width setting value stored in the predetermined storage area of the host computer 2. It becomes a state.
Thereafter, when the control command is generated, the host control unit 50 generates a control command corresponding to the paper width indicated by the paper width setting value stored in the predetermined storage area. For example, when image data is included in the control command transmitted to the printing apparatus 1, the host control unit 50 processes the image data according to the paper width as necessary.

Next, processing performed by the printing apparatus 1 when the power is turned on will be described.
FIG. 7 is a flowchart showing the operation of the printing apparatus 1 when the power is turned on.
As shown in FIG. 7, the control unit 40 of the printing apparatus 1 monitors whether or not the cover 18 has shifted from the open state to the closed state based on the detection value input from the cover sensor 47 (step SE1). ).
When it is detected that the cover 18 has shifted from the open state to the closed state (step SE1: YES), the control unit 40 detects the state of the paper guide 25 based on the detection value input from the paper guide sensor 46. (Step SE2).
Next, the control unit 40 determines whether or not the paper guide 25 is attached based on the detection result of step SE2 (step SE3).

When the paper guide 25 is not attached (step SE3: NO), the control unit 40 returns the processing procedure to step SE1. When the cover 18 is closed and the paper guide 25 is not attached, the paper guide 25 is not accidentally released. This is because in this case, as described above, the paper guide 25 is automatically locked to the locking portion as the cover 18 shifts from the open state to the closed state. Therefore, when the cover 18 is in the closed state and the paper guide 25 is not attached, the user deliberately does not attach the paper guide 25 and the user recognizes that the paper guide 25 is not attached. doing. Therefore, if the paper guide 25 is not attached when the cover 18 is closed, the printing apparatus 1 is continuously used as an apparatus for printing on 80 mm roll paper, and the setting file 431 is used. The paper width setting value recorded in is assumed to be a value indicating 80 mm.
Based on the above, when it is determined in step SE3 that the paper guide 25 is attached, the processing procedure is shifted to step SE1 without executing reset.

When it is determined in step SE3 that the paper guide 25 is attached (step SE3: YES), the control unit 40 refers to the setting file 431, and the paper width setting value recorded in the setting file 431 indicates 80 mm. Whether it is a value or not is discriminated (step SE4).
When the paper width setting value recorded in the setting file 431 is not a value indicating 80 mm (step SE4: NO), in other words, when the paper width setting value recorded in the setting file 431 is a value indicating 58 mm, the control unit 40 Then, the process proceeds to step SE1. This is because the paper width value of the roll paper actually stored in the storage unit 20 matches the paper width setting value recorded in the setting file 431.

  On the other hand, when the paper width setting value recorded in the setting file 431 is a value indicating 80 mm (step SE4: YES), the control unit 40 executes reset (step SE5). When reset is executed in step SE5, initial processing shown in the flowchart of FIG. 6A is performed along with the reset. In this initial process, the control unit 40 changes the paper width setting value to a value indicating 58 mm by the process of step SC4. As a result, the paper width value of the roll paper actually stored in the storage unit 20 and the paper width setting value recorded in the setting file 431 coincide with each other. Further, the control unit 40 notifies the host computer 2 of the changed paper width setting value through the process of step SC8. As a result, the paper width setting value recorded in the setting file 431 of the printing apparatus 1 matches the paper width setting value stored in the predetermined storage area of the host computer 2.

As described above, the control unit 40 determines that the paper guide 25 is attached based on the detection value of the paper guide sensor 46, and the value of the paper width setting value recorded in the setting file 431 is 80 mm. If the value is the value shown, reset is executed, and the paper width setting value is rewritten and notification of the paper width setting value to the host computer 2 is executed in the initial processing that is performed along with the reset.
Here, when the paper guide 25 is attached and the value of the paper width setting value recorded in the setting file 431 is a value indicating 80 mm, the roll paper R actually stored in the storage unit 20 is stored. In order to eliminate the discrepancy between the paper width value and the paper width setting value, it is necessary to rewrite the paper width setting value and notify the host computer 2 of the paper width setting value. On the other hand, if the paper guide 25 is not attached when the cover 18 is closed, or if the paper guide 25 is attached and the paper width setting value indicates 58 mm, the paper is actually accommodated. Since the paper width value of the roll paper R accommodated in the unit 20 matches the paper width setting value, it is necessary to rewrite the paper width setting value and notify the host computer 2 of the paper width setting value. There is no.
Then, the control unit 40 determines that the paper guide 25 is attached based on the detection value of the paper guide sensor 46, and the value of the paper width setting value recorded in the setting file 431 indicates 80 mm. In this case, since the reset is executed, it is possible to prevent the reset from being performed unnecessarily, and to prevent a period during which the printing apparatus 1 being reset cannot be used, thereby improving user convenience and satisfaction. Can be improved.

Here, the user can change the paper width setting value recorded in the setting file 431 by the following means.
That is, the user can change the value of the paper width setting value recorded in the setting file 431 by an instruction by operating a memory switch (software switch) with a predetermined means. The predetermined means is, for example, an input to a predetermined user interface provided by a terminal in which a software tool for maintenance of the printing apparatus 1 is installed.
Further, the user can change the value of the paper width setting value recorded in the setting file 431 by an instruction by operating a dedicated dip switch (hardware switch) mounted on the control board.
In addition, the user changes the value of the paper width setting value recorded in the setting file 431 by transmitting a dedicated control command to the printing apparatus 1 from an external device connected to the printing apparatus 1 (in response to an instruction by the control command). it can. The external apparatus may be the host computer 2 or an apparatus other than the host computer 2 such as a terminal in which a software tool for maintenance of the printing apparatus 1 is installed.
Thus, the user can intentionally change the value of the paper width setting value recorded in the setting file 431. Therefore, when the printing apparatus 1 is used as an apparatus for printing on 58 mm roll paper, even if the printing apparatus 1 is used as an apparatus for printing on 80 mm roll paper due to predetermined circumstances, Changes the value of the paper width setting value recorded in the setting file 431, and sets the value of the paper width of the roll paper actually stored in the printing apparatus 1 and the value of the paper width setting value recorded in the setting file 431. It is possible to prevent a mismatch.

As described above, the printing apparatus 1 according to this embodiment includes the printing unit 41 that prints on the roll paper R, the storage unit 20 that stores the roll paper R, and the paper width of the roll paper R that is stored in the storage unit 20. Accordingly, the presence or absence of attachment changes, and a paper guide 25 that regulates the position of the roll paper R in the storage unit 20 and a paper guide sensor 46 (sensor) that outputs different detection values depending on the state of the paper guide 25. A storage unit 43 that stores a paper width setting value (setting value) indicating the paper width of the roll paper R, and a control unit 40 that causes the printing unit 41 to print based on the paper width setting value stored in the storage unit 43. The control unit 40 detects the state of the paper guide 25 based on the detection value of the paper guide sensor 46 using activation or reset (reactivation) as a trigger, and the paper guide 25 is attached to the storage unit 20. In the case of (a state corresponding to the roll paper R having the first paper width), when the paper width setting value is a value indicating 80 mm (second paper width) (a value indicating a paper width other than the first paper width), the paper width While the setting value is changed to a value indicating 58 mm, when the paper guide 25 is not attached to the storage unit 20 (a state corresponding to the roll paper R having a paper width other than the first paper width), the paper width setting value The set value is not changed regardless of the value.
Further, when the paper width setting value is once changed to a value indicating 58 mm and then activated or reset (reactivated), the state of the paper guide 25 is temporarily detected based on the detection value of the paper guide sensor 46. Thus, even when the paper guide 25 is not attached to the storage unit 20 or is attached as another paper width (a state corresponding to the roll paper R having a paper width other than the predetermined paper width), the paper width is set. Do not change the value.
According to this configuration, when the paper guide 25 is attached, it is possible to prevent a mismatch between the value of the paper width of the roll paper R actually stored in the storage unit 20 and the value of the paper width setting value. . In addition, the paper guide 25 is in a state in which the paper guide 25 is in the locked state accidentally released and the paper guide 25 is attached before the printing is started. Since the value is changed to a value indicating 80 mm, it is possible to prevent a mismatch between the value of the paper width of the roll paper R actually stored in the storage unit 20 and the value of the paper width setting value. Thereby, it is possible to suppress an adverse effect caused by a mismatch between the paper width value indicated by the paper width setting value and the paper width value of the roll paper R accommodated in the printing apparatus 1.

Further, in the present embodiment, the paper width setting value stored in the storage unit 43 can be changed by an instruction by a control command transmitted by an external device or an instruction by an operation of a software switch or a hardware switch.
According to this configuration, when the printing apparatus 1 is used as an apparatus for printing on 58 mm roll paper, the printing apparatus 1 is used as an apparatus for printing on 80 mm roll paper due to predetermined circumstances. In addition, the user changes the value of the paper width setting value recorded in the setting file 431, and sets the value of the paper width of the roll paper actually stored in the printing apparatus 1 and the paper width setting value recorded in the setting file 431. It is possible to prevent a mismatch with the value.

Further, the printing apparatus 1 according to the present embodiment includes a transport unit 42 that transports the roll paper R while sandwiching the recording medium by the thermal head 24 and the platen roller 23. And the control part 40 makes the motor which drives the platen roller 23 high torque, so that the paper width which a paper width setting value shows is small.
According to this configuration, the platen roller becomes smaller as the paper width indicated by the paper width setting value is smaller due to the mismatch between the paper width value indicated by the paper width setting value and the paper width value of the roll paper R accommodated in the printing apparatus 1. The bad influence which arises by making the motor which drives 23 into high torque can be controlled.

Further, in the present embodiment, when the control unit 40 causes the printing unit 41 to print a character string, the control unit 40 changes the line feed mode of the character string according to the paper width indicated by the paper width setting value.
According to this configuration, one line according to the paper width indicated by the paper width setting value due to the mismatch between the paper width value indicated by the paper width setting value and the paper width value of the roll paper R accommodated in the printing apparatus 1. It is possible to suppress adverse effects caused by changing the number of digits of the characters.

As described above, the printing apparatus 1 according to the present embodiment includes the cover sensor 47 that outputs different detection values according to the open / closed state of the cover 18, and the communication unit 44 that communicates with the host computer 2 (external device). . When the control unit 40 detects that the cover 18 has shifted from the open state to the closed state based on the detection value of the cover sensor 47, the control unit 40 changes the state of the paper guide 25 based on the detection value of the paper guide sensor 46. Detected and in a state where the paper guide 25 is attached (a state corresponding to the roll paper R having the first paper width), a value indicating that the paper width setting value is 80 mm (a value indicating a paper width other than the first paper width) ), A process of changing the paper width setting value to a value indicating 58 mm, and a process of notifying the host computer 2 of the changed paper width setting value are executed.
According to this configuration, when the paper guide 25 is attached, it is possible to prevent a mismatch between the value of the paper width of the roll paper R actually stored in the storage unit 20 and the value of the paper width setting value. . Further, since the paper width setting value after the change is notified to the host computer 2, it is possible to prevent a mismatch between the paper width setting value and the paper width setting value managed by the host computer 2. In other words, the paper width value indicated by the paper width setting value and the paper width value managed by the host computer 2 do not match, and the paper width value indicated by the paper width setting value and the roll paper actually accommodated in the printing apparatus 1 It is possible to suppress an adverse effect caused by a mismatch between the R paper width value.

In the present embodiment, the control unit 40 performs a reset when the paper guide 25 is attached and the paper width setting value is a value indicating 80 mm, and is an initial process performed along with the reset. Processing to change the paper width setting value to a value indicating 58 mm and processing to notify the host computer 2 of the changed paper width setting value are executed.
According to this configuration, it is possible to efficiently notify the host computer 2 of the paper width setting value by using the fact that the initial process performed in association with the reset includes the process of notifying the host computer 2 of the paper width setting value. .

In the present embodiment, the control unit 40 notifies the host computer 2 that the reset has been performed in the initial processing, and sets the paper width setting value in response to an inquiry received from the host computer 2 in response to the notification. Notify the host computer 2.
According to this configuration, the printing apparatus 1 can reliably notify the host computer 2 of the paper width setting value.

In the present embodiment, the paper guide 25 changes the detection value output from the paper guide sensor 46 when the paper guide 25 is locked to a locking portion provided in the storage unit 20. When the cover 18 is shifted from the open state to the closed state in a state where the paper guide 25 is not locked to the locking portion and is provided in the housing portion 20, the state of the cover 18 is changed. The paper guide 25 is locked to the locking portion.
According to this configuration, the paper guide 25 can be locked to the storage unit 20 by shifting the cover 18 to the closed state, and the roll paper R that is actually stored when the cover 18 is closed. If there is a discrepancy between the paper width value and the paper width setting value, the discrepancy can be resolved.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied within the scope of the present invention.
For example, in the above-described embodiment, the paper guide 25 regulates the position of the roll paper R having different paper widths depending on whether the paper guide 25 is attached or not attached. However, the paper guide 25 may be configured to regulate the position of the roll paper R having a different paper width by changing the position thereof.
In the above-described embodiment, the printing apparatus 1 can accommodate roll paper R having two types of paper widths of 58 mm and 80 mm, and then the number of paper widths that can be accommodated in the printing apparatus 1 is limited to two. In addition, the types of paper width are not limited to 58 mm and 80 mm.
Further, for example, each functional block described with reference to the drawings can be arbitrarily realized by hardware and software, and does not suggest a specific hardware configuration.

  DESCRIPTION OF SYMBOLS 1 ... Printing apparatus, 2 ... Host computer, 20 ... Storage part, 22 ... Opening, 23 ... Platen roller, 24 ... Thermal head, 25 ... Paper guide, 40 ... Control part, 41 ... Printing part, 43 ... Storage part, 44 Communication unit 46 Paper guide sensor (sensor) 47 Cover sensor R Roll paper

Claims (8)

A printing apparatus that can accommodate roll paper,
A printing unit for printing on the roll paper;
An accommodating portion for accommodating the roll paper;
A paper guide that regulates the position of the roll paper in the storage unit according to the presence or absence of attachment according to the paper width of the roll paper, or the attachment position;
A sensor for detecting the state of attachment of the paper guide;
A storage unit for storing a setting value indicating a paper width of the roll paper;
Causing the printing unit to print based on the setting value stored in the storage unit, and
The attachment state of the paper guide detected by the sensor using a predetermined event as a trigger is an attachment state corresponding to the roll paper having the first paper width, and the set value is other than the first paper width. In the case of the value indicating the paper width, the setting value is changed to a value indicating the first paper width, while the detected attachment state of the paper guide corresponds to the roll paper having a paper width other than the first paper width. In the state of mounting to be performed, a control unit that does not change the set value regardless of the value of the set value;
A printing apparatus comprising: The controller is
The attachment state of the paper guide detected by the sensor using a predetermined event as a trigger is an attachment state corresponding to the roll paper of the first paper width, and the set value is the first paper width. In the case of a value indicating a second paper width larger than the value, the set value is set to a value indicating the first paper width, and the detected attachment state of the paper guide corresponds to the roll paper having the second paper width. 2. The printing apparatus according to claim 1, wherein the setting value is not changed regardless of the value of the setting value in a mounted state.   The setting value stored in the storage unit can be changed according to an instruction by a control command transmitted by an external device or a setting of a software switch or a hardware switch, and the setting value is changed to a value indicating the first paper width. The printing apparatus according to claim 1, wherein the printer is transmitted to the external apparatus. A transport unit that transports the roll paper by sandwiching the roll paper by a thermal head and a platen roller;
The controller is
The printing apparatus according to any one of claims 1 to 3, wherein a motor that drives the platen roller is set to a higher torque as the paper width indicated by the set value is smaller. The controller is
5. When printing a character string on the printing unit, the aspect of the number of characters printed on one line is changed according to the paper width indicated by the setting value. 6. The printing apparatus as described in. A printing apparatus that can accommodate roll paper,
A printing unit for printing on the roll paper;
An accommodating portion for accommodating the roll paper;
A paper guide that regulates the position of the roll paper in the storage unit according to the presence or absence of attachment according to the paper width of the roll paper, or the attachment position;
A sensor for detecting the state of attachment of the paper guide;
A storage unit for storing a setting value indicating a paper width of the roll paper;
Causing the printing unit to print based on the setting value stored in the storage unit, and
The attachment state of the paper guide detected by the sensor using a predetermined event as a trigger is an attachment state corresponding to the roll paper having a predetermined paper width, and the set value is a paper width other than the predetermined paper width. In the case of a value indicating, the setting value is changed to a value indicating the predetermined paper width, and thereafter, the control unit that does not change the setting value;
A printing apparatus comprising: Roll paper can be accommodated, and the roll paper can be printed according to a printing unit that prints on the roll paper, a storage unit that accommodates the roll paper, and whether or not the roll paper is attached according to the paper width of the roll paper. A paper guide that regulates the position of the paper guide, a sensor that detects the attachment state of the paper guide, a storage unit that stores a setting value that indicates a paper width of the roll paper, and the setting that the storage unit stores A control method of a printing apparatus comprising a control unit that causes the printing unit to print based on a value,
When the paper guide is attached by the control unit detected by the sensor using a predetermined event as a trigger, the paper guide is attached corresponding to the roll paper having the first paper width, and the set value is In the case of a value indicating a paper width other than the first paper width, the set value is changed to a value indicating the first paper width, while the detected attachment state of the paper guide is a paper width other than the first paper width. A control method for a printing apparatus, characterized in that the setting value is not changed regardless of the value of the setting value in the state of attachment corresponding to the roll paper. Roll paper can be accommodated, and the roll paper can be printed according to a printing unit that prints on the roll paper, a storage unit that accommodates the roll paper, and whether or not the roll paper is attached according to the paper width of the roll paper. A paper guide that regulates the position of the paper guide, a sensor that detects the attachment state of the paper guide, a storage unit that stores a setting value that indicates a paper width of the roll paper, and the setting that the storage unit stores A control unit that causes the printing unit to print based on a value, and a control method for a printing apparatus,
When the paper guide is attached by the control unit triggered by a predetermined event, the paper guide is attached to the roll paper having a predetermined paper width, and the set value is the predetermined value. When the value indicates a paper width other than the paper width, the setting value is changed to a value indicating the predetermined paper width, and the setting value is not changed thereafter.

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