JP6445405B2 - Printing device - Google Patents

Description

  Embodiments described herein relate generally to a printing apparatus.

2. Description of the Related Art Conventionally, a printing device such as a passbook printer performs alignment of a passbook by controlling an alignment roller and pressing the passbook against a wall of a conveyance path or a shutter. Here, alignment refers to adjusting the position of the medium such that a medium such as a passbook inserted from the insertion slot is arranged at a predetermined alignment position. In the following description, alignment is referred to as tilt correction.
However, in the above method, depending on the relationship between the rotation speed of the alignment roller and the type or state of the passbook, the passbook may rebound after hitting the wall or shutter. In such a case, the printing apparatus may not be able to correct the passbook inclination. Such a problem is not limited to a passbook, but is a problem common to all media that are targets of tilt correction.

JP 2008-310592 A

  The problem to be solved by the present invention is to provide a printing apparatus that can reduce failure in tilt correction.

The printing apparatus according to the embodiment includes a conveyance roller , a wall portion, a control unit, and a printing unit. Conveying rollers includes a first transport roller for transporting the medium by rotating a first direction, a second conveying roller for conveying a second direction perpendicular to the said medium a first direction by rotating Have . The wall portion includes a first wall portion to which a first end located in the first direction among the ends of the medium is pressed, and a second end located in the second direction among the ends of the medium. And a second wall portion to be pressed . The control unit performs tilt correction of the medium by controlling the transport roller and pressing the medium against the wall. Further, when the tilt correction fails, the control unit corrects the tilt by slowing the transport speed of the transport roller and pressing the medium against the wall again. The printing unit performs printing on the medium on which the tilt correction has been performed.

1 is a configuration diagram of a printing apparatus 1 according to an embodiment. FIG. 3 is a top view of a mechanism of the printing apparatus 1 used for tilt correction. The block diagram which shows the function structure of the control apparatus 40 in 1st Embodiment. The figure for demonstrating the specific example of inclination correction success. The flowchart which shows the flow of a process of the control apparatus. The block diagram which shows the function structure of the control apparatus 40a in 2nd Embodiment. The flowchart which shows the flow of a process of the control apparatus 40a in 2nd Embodiment.

Hereinafter, a printing apparatus according to an embodiment will be described with reference to the drawings.
FIG. 1 is a configuration diagram of a printing apparatus 1 according to the embodiment. The printing apparatus 1 prints a predetermined image or character on a medium, and outputs the medium on which the image or character is printed. The printing apparatus 1 is, for example, a passbook printer or a label printer. When the printing apparatus 1 is a passbook printer, the medium is a passbook.
The printing apparatus 1 includes an insertion port 2, a paper loading unit 3, a thermal printing unit 4, a first transport path 5a, and a second transport path 5b. In the following description, the direction in which the insertion slot 2 is located is described as the front, and the direction in which the paper loading unit 3 is located is described as the rear.

The insertion port 2 is provided with a part exposed on the front surface of the printing apparatus 1. The insertion slot 2 is a bankbook (medium) entrance / exit and a statement exit. The paper loading unit 3 is provided at the rear of the printing apparatus 1. The paper loading unit 3 is provided with a space for installing the thermal paper 6. The paper loading unit 3 may be provided with a shaft for mounting the thermal paper 6. The thermal paper 6 is a paper printed by the printing apparatus 1. The thermal paper 6 is formed in a roll shape. The thermal paper 6 is conveyed to the first conveyance path 5a via the thermal printing unit 4.
The thermal printing unit 4 prints on the surface of the thermal paper 6. The thermal printing unit 4 will be described in more detail. The thermal printing unit 4 includes a first thermal head 17, a second thermal head 18, a first platen roller 20, a second platen roller 21, and a cutting unit 22.

  The first thermal head 17 and the second thermal head 18 are arranged at a predetermined interval. A first platen roller 20 is disposed to face the first thermal head 17. A second platen roller 21 is disposed opposite to the second thermal head 18. The first thermal head 17 performs printing on the thermal paper 6 pressed against the first thermal head 17 by the first platen roller 20. The second thermal head 18 prints on the thermal paper 6 pressed against the second thermal head 18 by the second platen roller 21. The first platen roller 20 and the second platen roller 21 each convey the thermal paper 6 forward by rotating. A thermal transfer path 24 is formed between the first platen roller 20 and the second platen roller 21.

  The cutting unit 22 cuts the thermal paper 6. For example, the cutting unit 22 includes a rotary cutter 23. For example, the cutting unit 22 cuts a portion of the thermal paper 6 that is separated from the rear end portion of the printed portion by a predetermined distance backward (in the direction toward the non-printed portion). By the cutting by the cutting unit 22, the thermal paper 6 is divided into a printed part and a non-printed part. The printed thermal paper 6 is conveyed downstream (front) by the first conveyance path 5a.

  A first feed roller pair 14 and a second feed roller pair 15 are provided in the first transport path 5a. The first feed roller pair 14 and the second feed roller pair 15 respectively rotate to convey the thermal paper 6 downstream. A slack forming portion 9 is formed between the first feed roller pair 14 and the second feed roller pair 15. The thermal paper 6 is slackened in the slack forming portion 9 due to the displacement of the rotation amounts of the first feed roller pair 14 and the second feed roller pair 15. The slack forming unit 9 absorbs the difference in the conveyance speed between the passbook and the thermal paper 6.

  The second conveyance path 5b is provided with a printing unit 8, a plurality of conveyance roller pairs 11 (11a to 11e), an entrance / exit roller pair 12, and a second detection sensor 13. The 2nd conveyance path 5b is arrange | positioned ahead of the 1st conveyance path 5a. The second transport path 5b is connected to the first transport path 5a. In the second transport path 5b, the thermal paper 6 transported from the first transport path 5a is transported further downstream. In the second transport path 5b, the medium inserted from the insertion port 2 is transported in the upstream direction (rear) or the downstream direction.

  The printing unit 8 is provided in the middle of the second transport path 5b. The printing unit 8 includes a dot head 8a. The printing unit 8 prints characters on the passbook by controlling the dot head 8a. The plurality of transport roller pairs 11 and the entrance / exit roller pairs 12 are arranged at predetermined intervals. The plurality of transport roller pairs 11 and the entrance / exit roller pairs 12 each transport the medium in the upstream or downstream direction by rotating.

  The second detection sensor 13 is provided downstream of the second transport path 5b (for example, near the entrance / exit roller pair 12). The second detection sensor 13 detects the medium flowing from the insertion port 2. A first detection sensor 16 is provided near the boundary between the first transport path 5a and the second transport path 5b. The first detection sensor 16 detects the thermal paper 6 that is transported from the first transport path 5a and flows into the second transport path 5b. The first detection sensor 16 detects a medium that is transported from the second transport path 5b and flows into the first transport path 5a. A plurality of first detection sensors 16 and second detection sensors 13 are provided. The first detection sensor 16 and the second detection sensor 13 are existing sensors provided in advance in the printing apparatus 1. For example, the first detection sensor 16 is a thermal paper detection sensor. For example, the second detection sensor 13 is a passbook detection sensor.

  The printing apparatus 1 includes a control device 40. The control device 40 controls the overall operation of the printing apparatus 1. For example, the control device 40 controls the rotation of various rollers and the printing of the thermal printing unit 4 and the printing unit 8. In addition, the control device 40 corrects the inclination of the medium. Next, the mechanism of the printing apparatus 1 used for tilt correction will be specifically described with reference to FIG.

FIG. 2 is a top view of the mechanism of the printing apparatus 1 used for tilt correction.
In FIG. 2, the same functional units as those in FIG. 1 are denoted by the same reference numerals as those in FIG. 2, in addition to the mechanism shown in FIG. 1, the printing apparatus 1 includes a reading unit 25, a plurality of alignment rollers 26 (26a, 26b, 26c), a conveyance path wall 27, a shutter 28, an alignment sensor 29a, and an alignment. A sensor 29b is provided. In FIG. 2, the direction of the arrow 30 represents the conveyance direction of the medium 31. In the following description, when both the alignment sensor 29a and the alignment sensor 29b are shown, they are simply referred to as an alignment sensor.

  The reading unit 25 is a device that reads the magnetic stripe of the medium 31. The alignment roller 26 is a roller used when the inclination of the medium 31 is corrected. The alignment roller 26 operates with one drive system. Under the control of the control device 40, the alignment roller 26 rotates simultaneously in the medium conveyance direction and in a direction orthogonal to the conveyance direction (hereinafter referred to as “orthogonal direction”). More specifically, the alignment rollers 26 a and 26 b rotate in the medium transport direction under the control of the control device 40. Further, the alignment roller 26 c rotates in the orthogonal direction under the control of the control device 40. The alignment rollers 26 all rotate at the same rotational speed. As the alignment roller 26 rotates simultaneously as described above, the medium 31 moves in an oblique direction.

  The conveyance path wall 27 is a wall against which one end of the medium 31 is pressed. The shutter 28 is a shutter against which one end of the medium 31 is pressed. The shutter 28 is opened and closed under the control of the control device 40. The alignment sensor 29 a is provided in the vicinity of the conveyance path wall 27. The alignment sensor 29a detects the medium 31. The alignment sensor 29b is provided in the vicinity of the shutter 28. The alignment sensor 29b detects the medium 31.

(First embodiment)
FIG. 3 is a block diagram illustrating a functional configuration of the control device 40 according to the first embodiment. The control device 40 includes an acquisition unit 41, a determination unit 42, and a control unit 43.
The acquisition unit 41 acquires information from a plurality of sensors. For example, the acquisition unit 41 acquires information (hereinafter referred to as “detection information”) indicating that the medium has been detected from the first detection sensor 16 and the alignment sensor.

  The determination unit 42 determines whether detection information is acquired from the alignment sensor when the medium is transported. The determination unit 42 determines whether detection information is acquired from the alignment sensor when the alignment roller 26 is stopped. In the following description, a case where the detection information is acquired from the alignment sensor when the alignment roller 26 is stopped is described as a successful tilt correction. On the other hand, a case where detection information is not acquired from all or a part of the alignment sensor when the alignment roller 26 is stopped is referred to as tilt correction failure.

  The control unit 43 includes a transport control unit 431 and an opening / closing control unit 432. The conveyance control unit 431 controls each medium by controlling each roller. For example, when the medium is detected by the second detection sensor 13, the conveyance control unit 431 drives the alignment roller 26 to convey the medium. Thus, by driving the alignment roller 26, the conveyance control unit 431 corrects the inclination of the medium. Further, the transport control unit 431 stores initial speed information. The initial speed information is information relating to the rotation speed of the alignment roller 26 at the time of the first tilt correction with respect to the medium after the medium is detected by the second detection sensor 13. In the first embodiment, the rotation speed of the alignment roller 26 indicated by the initial speed information is the same for any medium. The conveyance control unit 431 conveys the medium by controlling the alignment roller 26 so that the rotation speed is based on the initial speed information. Further, the conveyance control unit 431 stops the alignment roller 26 when detection information is acquired from the alignment sensor during conveyance of the medium. Further, when it is determined that the tilt correction is successful, the transport control unit 431 drives the alignment roller 26 again to transport the medium.

  On the other hand, when it is determined that the tilt correction has failed, the conveyance control unit 431 controls the rotation speed of the alignment roller 26. For example, the conveyance control unit 431 controls the alignment roller 26 so that the rotation speed of the alignment roller 26 is slower than the rotation speed at the previous tilt correction. The width by which the conveyance control unit 431 decreases the rotation speed so that the rotation speed is lower than the rotation speed at the time of the previous tilt correction may be determined in advance. For example, the width for decreasing the rotation speed may be a predetermined interval (for example, every 1 IPS (Inch Per Second)).

  Hereinafter, the operation of the transport control unit 431 in the first embodiment will be described with a specific example. First, the rotational speed based on the initial speed information is set to 5IPS. In the case of tilt correction failure, the conveyance control unit 431 controls the alignment roller 26 so that the rotation speed (for example, 4IPS) is slower than the rotation speed (5IPS) at the time of the previous tilt correction. Then, the conveyance control unit 431 performs inclination correction again. If the tilt correction fails again, the conveyance control unit 431 controls the alignment roller 26 so that the rotation speed (3IPS) is lower than the rotation speed (4IPS) at the previous tilt correction. Then, the conveyance control unit 431 performs inclination correction again. As described above, the conveyance control unit 431 performs the inclination correction by reducing the rotation speed of the alignment roller 26 every time the inclination correction fails.

  The opening / closing control unit 432 controls opening / closing of the shutter 28. For example, the opening / closing control unit 432 closes the shutter 28 when a medium is detected by the second detection sensor 13. For example, the opening / closing control unit 432 opens the shutter 28 when the inclination correction is successful when the alignment roller 26 is stopped.

  FIG. 4 is a diagram for explaining a specific example of successful tilt correction. As illustrated in FIG. 4, when the medium 31 is detected by the alignment sensor, the determination unit 42 determines that the inclination correction is successful. In this case, the opening / closing control unit 432 opens the shutter 28. The conveyance control unit 431 controls the conveyance roller pair 11 and conveys the medium 31 to the upstream side.

  FIG. 5 is a flowchart showing the flow of processing of the control device 40 in the first embodiment. The process of FIG. 5 is started after the medium is inserted into the printing apparatus 1. The second detection sensor 13 detects the medium (ACT 101). The second detection sensor 13 that has detected the medium transmits detection information to the control device 40. The acquisition unit 41 acquires the detection information transmitted from the second detection sensor 13. When the detection information is acquired, the control unit 43 performs tilt correction (ACT 102). Specifically, the transport control unit 431 transports the medium by controlling the alignment roller 26 so that the rotation speed is based on the initial speed information. The opening / closing control unit 432 closes the shutter 28. The medium is pressed against the conveyance path wall 27 and the shutter 28 by the control of the alignment roller 26 by the conveyance control unit 431.

  The determination unit 42 determines whether detection information is acquired from the alignment sensor (ACT 103). Specifically, the determination unit 42 determines whether detection information has been acquired from both the alignment sensor 29a and the alignment sensor 29b. When the detection information is not acquired from the alignment sensor (ACT 103: NO), the control device 40 repeatedly executes the process of ACT 103.

  On the other hand, when detection information is acquired from the alignment sensor (ACT 103: YES), the conveyance control unit 431 stops the alignment roller 26 (ACT 104). Thereafter, the determination unit 42 determines the inclination correction result based on the detection information acquisition result of the acquisition unit 41 (ACT 105). When the tilt correction result is successful tilt correction (ACT 105: success), the open / close control unit 432 opens the shutter 28 (ACT 106). When the shutter 28 is opened, the transport control unit 431 controls the transport roller pair 11 to transport the medium upstream (ACT 107).

  When the tilt correction result is a tilt correction failure (ACT 105: failure), the conveyance control unit 431 controls the rotation speed of the alignment roller 26 (ACT 108). For example, the conveyance control unit 431 lowers the rotation speed of the alignment roller 26 from the previous rotation speed. Thereafter, the transport controller 431 transports the medium by re-driving the alignment roller 26 at the lowered rotation speed (ACT 109). Thereafter, the processing after ACT 103 is repeatedly executed.

  According to the printing apparatus 1 in the first embodiment configured as described above, failure in tilt correction can be reduced. Hereinafter, this effect will be described in detail. If the inclination correction fails, the printing apparatus 1 controls the rotation speed of the alignment roller 26. For example, the printing apparatus 1 reduces the rotation speed of the alignment roller 26 from the previous rotation speed. Therefore, in the tilt correction after the failure, the rebound of the medium pressed against the conveyance path wall 27 and the shutter 28 is smaller than in the previous tilt correction. This increases the probability that the alignment sensor detects the medium after the alignment roller 26 is stopped. Therefore, it is possible to reduce the tilt correction failure.

Hereinafter, modifications of the printing apparatus 1 according to the first embodiment will be described.
In the present embodiment, the configuration in which the alignment roller 26 is driven by one drive system is shown, but the present invention is not limited to this. For example, each alignment roller 26 may be driven by a separate drive system. When configured in this way, the conveyance control unit 431 controls the alignment roller 26 by controlling the drive system corresponding to each alignment roller 26. Further, when each alignment roller 26 is driven by a separate drive system, the following processing may be performed.

  When the detection information is not acquired from a part of the alignment sensor, the determination unit 42 determines an alignment sensor for which detection information has not been acquired (hereinafter referred to as “unacquired sensor”). In this case, the determination unit 42 stores in advance identification information for identifying each alignment sensor. The determination unit 42 determines an unacquired sensor based on the identification information of the transmission source of the detection information and the stored identification information. For example, the determination unit 42 determines that the alignment sensor identified by the identification information that does not correspond to the identification information of the detection information transmission source among the stored identification information is an unacquired sensor. In this case, the conveyance control unit 431 controls the alignment roller 26 that rotates in the direction in which the alignment sensor determined to be an unacquired sensor is installed. For example, when the alignment sensor 29b in FIG. 4 is an unacquired sensor, the conveyance control unit 431 rotates the alignment rollers 26a and 26b. At this time, the conveyance control unit 431 lowers the rotation speed of the alignment rollers 26a and 26b from the previous rotation speed.

  With this configuration, it is possible to further reduce the tilt correction failure. Specifically, in this embodiment, since the alignment roller 26 is driven by one drive system, when the alignment roller 26 is rotated, all the alignment rollers 26 are rotated. As a result, when tilt correction is performed again, there is a possibility that the alignment sensor that has already detected the medium in the previous tilt correction may not detect the medium. On the other hand, when each alignment roller 26 is operated by each drive system, it is not rotated in the direction in which the alignment sensor that has already detected the medium is located. That is, the alignment roller 26 that rotates in the direction in which the alignment sensor that has already detected the medium is located is not driven. Therefore, it is possible to reduce the possibility that the alignment sensor that has already detected the medium in the previous tilt correction will not detect the medium. Therefore, it is possible to further reduce the tilt correction failure.

  The printing apparatus 1 may be provided with two alignment rollers 26 or may be provided with four or more alignment rollers 26. The printing apparatus 1 may be provided with three or more alignment sensors.

(Second Embodiment)
In the second embodiment, the printing apparatus 1 performs the tilt correction of the next medium at the rotation speed of the alignment roller 26 when the tilt correction is successful.
FIG. 6 is a block diagram illustrating a functional configuration of the control device 40a according to the second embodiment. The control device 40a includes an acquisition unit 41, a determination unit 42, and a control unit 43a.
The control device 40a is different in configuration from the control device 40 in that a control unit 43a is provided instead of the control unit 43. The control device 40a is the same as the control device 40 in other configurations. Therefore, description of the whole control apparatus 40a is abbreviate | omitted, and demonstrates the control part 43a.

  The control unit 43a includes a transport control unit 431a and an opening / closing control unit 432. The conveyance control unit 431a controls the conveyance of the medium by controlling each roller. For example, when the medium is detected by the second detection sensor 13, the conveyance control unit 431 a drives the alignment roller 26 to convey the medium. Thus, by driving the alignment roller 26, the conveyance control unit 431a corrects the inclination of the medium. Further, the transport control unit 431a stores initial speed information. In the second embodiment, the rotation speed of the alignment roller 26 indicated by the initial speed information is determined based on the number of times until the inclination correction is successful. Specifically, when the inclination correction is successful at the first time, the conveyance control unit 431a determines a rotation speed faster than the rotation speed at the time of successful inclination correction as the rotation speed indicated by the initial speed information. The range in which the rotation speed is increased so that the conveyance control unit 431a has a higher rotation speed than the rotation speed at the time of successful tilt correction may be determined in advance. And the conveyance control part 431a memorize | stores the information regarding the determined rotational speed as initial speed information. Note that when there is no tilt correction result, for example, when tilt correction has not been performed since activation, a preset rotation speed is the rotation speed indicated by the initial speed information.

If the tilt correction is successful after the second time, the conveyance control unit 431a determines the rotation speed when the tilt correction is successful as the rotation speed indicated by the initial speed information. And the conveyance control part 431a memorize | stores the information regarding the determined rotational speed as initial speed information. The conveyance control unit 431a conveys the medium by controlling the alignment roller 26 so that the rotation speed is based on the initial speed information. In addition, the conveyance control unit 431a stops the alignment roller 26 when detection information is acquired from the alignment sensor during conveyance of the medium. Further, when it is determined that the tilt correction is successful, the transport control unit 431a drives the alignment roller 26 again to transport the medium.
On the other hand, when it is determined that the tilt correction has failed, the following processing is performed. For example, the conveyance control unit 431a controls the alignment roller 26 so that the rotation speed of the alignment roller 26 is slower than the rotation speed at the previous tilt correction.

  Hereinafter, the operation of the transport control unit 431a in the second embodiment will be described with a specific example. First, the rotational speed based on the initial speed information is set to 5IPS. In the case of inclination correction failure, the conveyance control unit 431a controls the alignment roller 26 so that the rotation speed (for example, 4IPS) is slower than the rotation speed (5IPS) at the time of the previous inclination correction. Then, the conveyance control unit 431a performs inclination correction again. If the inclination correction fails again, the conveyance control unit 431a performs control so that the rotation speed (3IPS) is lower than the rotation speed (4IPS) at the previous inclination correction. Thereafter, the conveyance control unit 431a performs inclination correction again. If the inclination correction is successful, the conveyance control unit 431a determines the rotation speed (3IPS) at the time of success as the rotation speed indicated by the initial speed information. The conveyance control unit 431a stores information on the rotation speed (3IPS) at the time of success as initial speed information. Next, when a new medium is detected, the conveyance control unit 431a controls the alignment roller 26 so as to achieve the rotation speed (3IPS) based on the initial speed information, and corrects the inclination. Here, if the tilt correction is successful at the first time, the following processing is performed. For example, the conveyance control unit 431a determines a rotation speed (for example, 4IPS) faster than the rotation speed (3IPS) at the time of successful tilt correction as the rotation speed indicated by the initial speed information. The conveyance control unit 431a stores, as initial speed information, information regarding a rotation speed (for example, 4IPS) that is faster than the rotation speed at the time of success.

FIG. 7 is a flowchart showing the flow of processing of the control device 40a in the second embodiment. The process of FIG. 7 is started after the medium is inserted into the printing apparatus 1. Further, processing similar to that in FIG. 5 is denoted by the same reference numerals as those in FIG. 5 in FIG.
In the process of ACT 105, when the result of the tilt correction is a successful tilt correction (ACT 105: successful), the transport control unit 431a determines whether or not the first time is successful (ACT 201).
In the case of success at the first time (ACT 201: YES), the conveyance control unit 431a stores a new rotation speed (ACT 202). Specifically, the conveyance control unit 431a determines a rotation speed faster than the rotation speed at the time of successful tilt correction as the rotation speed indicated by the initial speed information. And the conveyance control part 431a memorize | stores the information regarding the determined rotational speed as initial speed information. Thereafter, the processing after ACT 106 is executed.
On the other hand, when it is not successful at the first time (ACT201: NO), the conveyance control unit 431a stores the rotation speed at the time of success (ACT203). Specifically, the conveyance control unit 431a stores information on the rotation speed at the time of success as initial speed information. Thereafter, the processing after ACT 106 is executed.

According to the printing apparatus 1 in the second embodiment configured as described above, the same effects as in the first embodiment can be obtained.
In the printing apparatus 1 according to the second embodiment, the rotation speed of the alignment roller 26 at the time of the next medium inclination correction is determined based on the number of times until the inclination correction is successful. Specifically, when the inclination correction is successful at the first time, the printing apparatus 1 performs the inclination correction at a rotation speed faster than the rotation speed at the time of the succeeding inclination correction at the time of the next medium inclination correction. This is because if the rotation is successful at the first time, the inclination correction may be successful even at a rotation speed faster than the rotation speed at the time of success. Thus, the time for one tilt correction can be shortened by increasing the rotation speed. Further, when the tilt correction is successful after the second time, the printing apparatus 1 performs the tilt correction at the rotation speed at the time when the previous tilt correction is successful when the tilt correction of the next medium is performed. This is because there is a low possibility that the tilt correction of the next medium will be successful at the rotation speed before the tilt correction is successful. Such control increases the probability that the alignment sensor detects the medium after the alignment roller 26 is stopped. Therefore, it is possible to reduce the tilt correction failure.

Hereinafter, a modification of the printing apparatus 1 in the second embodiment will be described.
The printing apparatus 1 in the second embodiment may be modified similarly to the printing apparatus 1 in the first embodiment.
The conveyance control unit 431a may determine the rotation speed indicated by the initial speed information as follows. For example, the conveyance control unit 431a may determine the rotation speed based on a statistical value of the rotation speed when the inclination correction of each medium is successful in all the past or the predetermined number of medium inclination corrections. Examples of the statistical value include an average value, a median value, a maximum value, and a mode value. In the case of such a configuration, the conveyance control unit 431a stores, for each medium, information on the rotation speed at the time of successful tilt correction performed for each medium after being activated. Then, the conveyance control unit 431a determines the rotation speed indicated by the initial speed information from the statistical value of the rotation speed when the inclination correction is successful for all the past or the predetermined number of the latest media. When a new medium is detected, the conveyance control unit 431a controls the alignment roller 26 so as to achieve the determined rotation speed and corrects the inclination.
By being configured in this way, it becomes possible to efficiently reduce the failure of the tilt correction by making use of information on the past successful tilt.

  According to at least one embodiment described above, the printing apparatus 1 includes the alignment roller 26, the conveyance control unit 431, and the printing unit 8. The alignment roller 26 is used for media alignment. The conveyance control unit 431 performs alignment of the medium by controlling the alignment roller. In addition, when the alignment fails, the conveyance control unit 431 performs alignment again by controlling the rotation speed of the alignment roller 26 so as to be different from the previous rotation speed. The printing unit 8 performs printing on the aligned medium. By having such a configuration, the printing apparatus 1 can reduce alignment failures.

  You may make it implement | achieve a part of function of the printing apparatus 1 in embodiment mentioned above with a computer. In that case, a program for realizing this function is recorded on a computer-readable recording medium. And you may implement | achieve by making a computer system read the program recorded on the recording medium which recorded the program mentioned above, and executing it. Here, the “computer system” includes hardware such as an operating system and peripheral devices. The “computer-readable recording medium” refers to a portable medium, a storage device, and the like. The portable medium is a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or the like. The storage device is a hard disk or the like built in the computer system. Further, the “computer-readable recording medium” is a program that dynamically holds a program for a short time like a communication line in the case of transmitting a program via a communication line. The communication line is a network such as the Internet or a telephone line. Further, the “computer-readable recording medium” may be a volatile memory inside a computer system serving as a server or a client. Volatile memory holds a program for a certain period of time. The program may be for realizing a part of the functions described above. Further, the program may be a program that can realize the above-described functions in combination with a program already recorded in the computer system.

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

DESCRIPTION OF SYMBOLS 1 ... Printing apparatus, 2 ... Insert port, 3 ... Paper loading part, 4 ... Thermal printing part, 5a ... 1st conveyance path, 5b ... 2nd conveyance path, 6 ... Thermal paper, 8 ... Printing part, 8a ... Dot head , 9 ... Slack forming part, 11 (11a to 11e) ... Conveying roller pair, 12 ... In / out roller pair, 13 ... Second detection sensor, 14 ... First feed roller pair, 15 ... Second feed roller pair, 16 ... 1st detection sensor, 17 ... 1st thermal head, 18 ... 2nd thermal head, 20 ... 1st platen roller, 21 ... 2nd platen roller, 22 ... cutting part, 23 ... rotary cutter, 24 ... thermal conveyance path, 25 ... Reading section, 26 (26a, 26b, 26c) ... Alignment roller, 27 ... Conveying path wall, 28 ... Shutter, 29a, 29b ... Alignment sensor, 31 ... Medium, 40, 40a ... Control device, 41 Acquisition unit, 42 ... determining unit, 43 and 43a ... control unit, 431,431A ... conveyance control unit, 432 ... switching control section

Claims (4)

A transport having a first transport roller that transports the medium in a first direction by rotating, and a second transport roller that transports the medium in a second direction orthogonal to the first direction by rotating. Laura,
Of the ends of the medium, the first wall portion pressed against the first end positioned in the first direction, and the second end positioned against the second direction among the ends of the medium pressed against the first wall . A wall having two walls,
A control unit for correcting the inclination of the medium by controlling the transport roller and pressing the medium against the wall;
A printing unit for printing on the medium that has been tilt-corrected;
With
When the tilt correction fails, the control unit performs the tilt correction by reducing the transport speed of the transport roller and pressing the medium against the wall again. 2. The printing apparatus according to claim 1, wherein the control unit performs the tilt correction again by reducing the transport speed of the transport roller every time the tilt correction fails. The printing apparatus according to claim 1, wherein the control unit corrects the inclination of the next medium based on a conveyance speed of the conveyance roller when the inclination correction is successful. 4. The printing apparatus according to claim 3, wherein, when the correction of the tilt of the medium is successful for the first time, the control unit increases the transport speed of the transport roller to correct the tilt of the next medium.

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