JP2017019648A - Printer - Google Patents

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JP2017019648A
JP2017019648A JP2015140477A JP2015140477A JP2017019648A JP 2017019648 A JP2017019648 A JP 2017019648A JP 2015140477 A JP2015140477 A JP 2015140477A JP 2015140477 A JP2015140477 A JP 2015140477A JP 2017019648 A JP2017019648 A JP 2017019648A
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medium
determines
printing
determination unit
sensors
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JP2015140477A
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JP6347767B2 (en
Inventor
賢悟 嵯峨
Kengo Saga
賢悟 嵯峨
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東芝テック株式会社
Toshiba Tec Corp
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Abstract

A printing apparatus capable of detecting a skew of a medium while suppressing an increase in cost.
A printing apparatus according to an embodiment includes a plurality of sensors, a printing unit, and a determination unit. The plurality of sensors are provided in advance in the own device and detect the medium. The printing unit prints on the medium. The determination unit determines whether the medium is skewed based on information acquired from the sensor. Further, the determination unit determines whether or not the medium is detected by the sensor from information acquired from the sensor, and the medium is detected by all of the sensors after the medium is not detected by any of the sensors. Is determined to be skewed when the predetermined value counted before the detection is stopped is greater than or equal to the threshold value, and the medium is skewed when the predetermined value is less than the threshold value. Judge that there is no.
[Selection] Figure 2

Description

  Embodiments described herein relate generally to a printing apparatus.

Conventionally, in a printing apparatus such as a passbook printer, detection of skew has been performed with a detection sensor for detecting skew of the passbook.
However, in the above method, since the number of sensors increases, the cost of the apparatus may increase. Such a problem is not limited to a passbook printer, but is a problem common to all printing apparatuses that transport a medium to be printed.

JP 2010-214617 A

  The problem to be solved by the present invention is to provide a printing apparatus capable of detecting skew of a medium while suppressing an increase in cost.

  The printing apparatus according to the embodiment includes a plurality of sensors, a printing unit, and a determination unit. The plurality of sensors are provided in advance in the own device and detect the medium. The printing unit prints on the medium. The determination unit determines whether the medium is skewed based on information acquired from the sensor. Further, the determination unit determines whether or not the medium is detected by the sensor from information acquired from the sensor, and the medium is detected by all of the sensors after the medium is not detected by any of the sensors. Is determined to be skewed when the predetermined value counted before the detection is stopped is greater than or equal to the threshold value, and the medium is skewed when the predetermined value is less than the threshold value. Judge that there is no.

1 is a configuration diagram of a printing apparatus 1 according to an embodiment. The block diagram which shows the function structure of the control apparatus 30 in 1st Embodiment. The figure for demonstrating the skew detection process in 1st Embodiment. The figure for demonstrating the skew detection process in 1st Embodiment. The figure for demonstrating the skew detection process in 1st Embodiment. The figure for demonstrating the skew detection process in 1st Embodiment. The flowchart which shows the flow of the skew detection process of the control apparatus 30 in 1st Embodiment. The block diagram which shows the function structure of the control apparatus 30a in 2nd Embodiment. The figure for demonstrating the skew detection process in 2nd Embodiment. The figure for demonstrating the skew detection process in 2nd Embodiment. The figure for demonstrating the skew detection process in 2nd Embodiment. The figure for demonstrating the skew detection process in 2nd Embodiment. The flowchart which shows the flow of the skew detection process of the control apparatus 30a 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 30. The control device 30 controls the operation of the entire printing apparatus 1. For example, the control device 30 controls the rotation of various rollers and the printing of the thermal printing unit 4 and the printing unit 8. Further, the control device 30 detects the skew of the medium.
Hereinafter, a specific configuration of the control device 30 will be described by taking a plurality of embodiments (first embodiment and second embodiment) as examples.

(First embodiment)
FIG. 2 is a block diagram illustrating a functional configuration of the control device 30 according to the first embodiment. The control device 30 includes an acquisition unit 31, a determination unit 32, a count unit 33, and a control unit 34.
The acquisition unit 31 acquires information from a plurality of sensors. For example, the acquisition unit 31 acquires information (hereinafter referred to as “detection information”) indicating that the medium has been detected from the first detection sensor 16 and the second detection sensor 13. Note that the acquisition unit 31 may acquire information from other sensors installed in the printing apparatus 1 in advance. As another sensor, for example, there is a sensor for alignment.

  The determination part 32 determines whether the 1st condition, the 2nd condition, and the 3rd condition were satisfy | filled based on the detection information acquired from the specific sensor. The specific sensor is a sensor that transmits detection information used for determining whether or not a condition is satisfied. The specific sensor may be selected by the user, may be selected in advance, or may be selected by other methods. The specific sensor may be any sensor as long as it is an existing sensor provided in advance in the printing apparatus 1. The determination part 32 memorize | stores the identification information of the selected specific sensor. Then, the determination unit 32 determines whether or not the identification information of the transmission source of the acquired detection information matches the stored identification information. When the transmission source identification information matches the stored identification information, the determination unit 32 determines that the sensor of the detection information transmission source is a specific sensor. On the other hand, when the identification information of the transmission source does not match the stored identification information, the determination unit 32 determines that the sensor of the transmission source of the detection information is not a specific sensor. By such processing, the determination unit 32 determines a specific sensor and a sensor that is not a specific sensor.

  Two or more sensors are selected as specific sensors. For example, a plurality of first detection sensors 16 may be selected as a specific sensor, or a plurality of second detection sensors 13 may be selected. Moreover, the combination of the 1st detection sensor 16 and the 2nd detection sensor 13 may be selected as a specific sensor, and the combination of another sensor may be selected as a specific sensor. 1st Embodiment demonstrates the process of the control apparatus 30 when the two 2nd detection sensors 13 are selected as a specific sensor.

  A specific example of the first condition is that detection information has been acquired from all specific sensors. A specific example of the second condition is that detection information is no longer acquired from some of the specific sensors. A specific example of the third condition is that detection information is no longer acquired from all specific sensors.

Further, the determination unit 32 determines whether or not the predetermined value counted by the counting unit 33 until the third condition is satisfied is equal to or greater than a predetermined threshold. If the predetermined value is equal to or greater than the predetermined threshold, the determination unit 32 determines that the medium is skewed. On the other hand, when the predetermined value is less than the predetermined threshold, the determination unit 32 determines that the medium is not skewed.
The count unit 33 starts counting a predetermined value when the second condition is satisfied after the conveyance of the medium is started. The count unit 33 increments the value of the counter until the third condition is satisfied after the second condition is satisfied.

  The control unit 34 includes a conveyance control unit 341 and a print control unit 342. The conveyance controller 341 controls each roller to control medium conveyance. For example, the transport control unit 341 starts transporting the medium when the first condition is satisfied. For example, the conveyance control unit 341 causes the medium to be output from the insertion port 2 as an error when the determination unit 32 determines that the medium is skewed. The print control unit 342 controls the printing unit 8 to execute printing on the medium.

  Next, the skew detection processing performed by the control device 30 will be specifically described with reference to FIGS. 3 to 6 are diagrams for explaining the skew feeding detection process in the first embodiment. 3 to 6, the second detection sensor 13 represents a specific sensor. 3 to 6, the direction indicated by the arrow 4 is the conveyance direction of the medium 40.

  FIG. 3 shows a state in which the medium 40 is detected by all the specific sensors. When the medium 40 is in the state shown in FIG. 3, the specific sensor transmits detection information to the control device 30. The acquisition unit 31 acquires detection information from a specific sensor. And the determination part 32 determines a transmission source from the acquired detection information, and determines whether the 1st condition was satisfy | filled. In FIG. 3, the determination unit 32 determines that the first condition is satisfied. In this case, the conveyance control unit 341 starts conveying the medium 40.

  FIG. 4 shows a state in which the medium 40 is no longer detected by some specific sensors. When the medium 40 is in the state shown in FIG. 4, some sensors that detect the medium 40 among the specific sensors transmit detection information to the control device 30. The acquisition unit 31 acquires detection information from some specific sensors. And the determination part 32 determines a transmission source from the acquired detection information, and determines whether the 2nd condition was satisfy | filled. In FIG. 4, the determination unit 32 determines that the second condition is satisfied. In this case, the count unit 33 starts counting a predetermined value.

  FIG. 5 shows a state in which the medium 40 is no longer detected by all the specific sensors. When the medium 40 is in the state shown in FIG. 5, the acquisition unit 31 cannot acquire detection information from a specific sensor. Therefore, the determination unit 32 determines that the third condition is satisfied. In this case, the count unit 33 finishes counting the predetermined value. X shown in FIG. 5 corresponds to a predetermined value. And the determination part 32 determines whether the predetermined value X is more than a predetermined threshold value. FIG. 5 shows an example where the predetermined value X is equal to or greater than a predetermined threshold. Therefore, the determination unit 32 determines that the medium 40 is skewed.

  FIG. 6 shows a state in which the medium 40 is no longer detected by all the specific sensors. When the medium 40 is in the state shown in FIG. 6, the acquisition unit 31 cannot acquire detection information from a specific sensor. Therefore, the determination unit 32 determines that the third condition is satisfied. In this case, the count unit 33 finishes counting the predetermined value. And the determination part 32 determines whether a predetermined value is more than a predetermined threshold value. FIG. 6 shows an example where the predetermined value is less than the predetermined threshold. Therefore, the determination unit 32 determines that the medium 40 is not skewed. Through the processing described above, the control device 30 detects the skew of the medium 40. This is the end of the description of the skew detection processing by the control device 30.

FIG. 7 is a flowchart illustrating the flow of the skew detection process of the control device 30 according to the first embodiment.
The count unit 33 substitutes 0 for a predetermined value X (ACT 101). By this process, the value of the count unit 33 is initialized. The determination unit 32 determines whether or not the first condition is satisfied (ACT102). Specifically, the determination unit 32 determines whether detection information has been acquired from all the specific sensors. The determination unit 32 determines that the first condition is satisfied when detection information is acquired from all of the specific sensors. The determination unit 32 determines that the first condition is not satisfied when the detection information is not acquired from all or some of the specific sensors. When the first condition is not satisfied (ACT102: NO), the determination unit 32 repeatedly executes the process of ACT102 until the first condition is satisfied.

  On the other hand, when the first condition is satisfied (ACT102: YES), the conveyance control unit 341 controls each roller to start conveyance of the medium (ACT103). Next, the determination unit 32 determines whether or not the second condition is satisfied (ACT 104). Specifically, the determination unit 32 determines whether or not detection information is acquired from some specific sensors. The determination unit 32 determines that the second condition is satisfied when detection information is no longer acquired from some specific sensors. The determination unit 32 determines that the second condition is not satisfied when the detection information is acquired from all the specific sensors or the detection information is not acquired from all the specific sensors. When the second condition is satisfied (ACT 104: YES), the count unit 33 increments the predetermined value X by 1 (ACT 105).

  The determination unit 32 determines whether or not the third condition is satisfied (ACT 106). Specifically, the determination unit 32 determines whether or not the detection information is acquired from all the specific sensors. The determination unit 32 determines that the third condition is satisfied when detection information is no longer acquired from all the specific sensors. The determination unit 32 determines that the third condition is not satisfied when the detection information is acquired from all the specific sensors or the detection information is acquired from some of the specific sensors. When the third condition is not satisfied (ACT 106: NO), the control device 30 repeatedly executes the processes after ACT 104.

  On the other hand, when the third condition is satisfied (ACT 106: YES), the counting unit 33 finishes counting the predetermined value X. The count unit 33 outputs a predetermined value X to the determination unit 32. The determination unit 32 determines whether or not the predetermined value X is greater than or equal to a predetermined threshold (ACT 107). When the predetermined value X is less than the predetermined threshold (ACT 107: NO), the determination unit 32 determines that the medium is not skewed. In this case, the print control unit 342 controls the printing unit 8 to execute printing on the medium (ACT 108). Thereafter, the control device 30 ends the process.

On the other hand, when the predetermined value X is equal to or greater than the predetermined threshold (ACT 107: YES), the determination unit 32 determines that the medium is skewed (ACT 109). In this case, the conveyance control unit 341 controls each roller to execute medium conveyance control (ACT 110). For example, the conveyance control unit 341 causes the medium to be output from the insertion port 2 as an error. Thereafter, the control device 30 ends the process.
Moreover, in the process of ACT104, when the 2nd condition is not satisfy | filled (ACT104: NO), the determination part 32 determines whether the 3rd condition was satisfy | filled (ACT106).

According to the printing apparatus 1 configured as described above, it is possible to detect the skew of the medium while suppressing an increase in cost. Hereinafter, this effect will be described in detail.
The printing apparatus 1 detects the skew of the medium using detection information acquired from existing sensors (first detection sensor 16 and second detection sensor 13) provided in advance in the apparatus. Therefore, it is not necessary to attach a new skew detection sensor. Therefore, it is possible to detect the skew of the medium while suppressing an increase in cost.

  The printing apparatus 1 outputs the medium as an error when it is determined that the medium is skewed. Therefore, printing is not performed in a state where the medium is skewed. For this reason, it is possible to reduce unnecessary printing on the medium. Further, it is possible to suppress ink consumption due to useless printing.

Hereinafter, a modification of the control device 30 in the first embodiment will be described.
Although the count unit 33 has shown the configuration for counting the value of the counter as a predetermined value in the processing of ACT 105, it is not necessary to be limited to this. For example, the count unit 33 may count the time from when the second condition is satisfied until the third condition is satisfied as a predetermined value. When configured in this way, the determination unit 32 may determine whether or not the time is equal to or greater than the threshold based on the counted time and the threshold in the process of ACT 107. If the counted time is equal to or greater than the threshold, the determination unit 32 determines that the medium is skewed. On the other hand, when the counted time is less than the threshold, the determination unit 32 determines that the medium is not skewed.

  Further, the counting unit 33 may count the number of steps of the transport motor from when the second condition is satisfied until the third condition is satisfied as a predetermined value. In this case, the determination unit 32 may determine whether or not the number of steps is equal to or greater than the threshold based on the counted number of steps and the threshold in the process of ACT 107. If the counted number of steps is equal to or greater than the threshold, the determination unit 32 determines that the medium is skewed. On the other hand, if the counted number of steps is less than the threshold, the determination unit 32 determines that the medium is not skewed.

(Second Embodiment)
In the second embodiment, a skew detection process of the control device 30a when the two first detection sensors 16 are selected as specific sensors will be described.
FIG. 8 is a block diagram illustrating a functional configuration of the control device 30a according to the second embodiment.
The control device 30a includes an acquisition unit 31, a determination unit 32a, a count unit 33a, and a control unit 34. The control device 30a is different from the control device 30 in that it includes a determination unit 32a and a count unit 33a instead of the determination unit 32 and the count unit 33. The control device 30a is the same as the control device 30 in other configurations. Therefore, description of the whole control apparatus 30a is abbreviate | omitted, and the determination part 32a and the count part 33a are demonstrated.

  The determination part 32a determines whether the 4th condition and the 5th condition were satisfy | filled based on the detection information acquired from the specific sensor. A specific example of the fourth condition is that detection information is acquired from some of the specific sensors. A specific example of the fifth condition is that detection information has been acquired from all specific sensors.

  The determination unit 32a determines whether or not the predetermined value counted by the counting unit 33a before the fifth condition is satisfied is equal to or greater than a predetermined threshold. If the predetermined value is equal to or greater than the predetermined threshold, the determination unit 32a determines that the medium is skewed. On the other hand, when the predetermined value is less than the predetermined threshold, the determination unit 32a determines that the medium is not skewed.

  The count unit 33a starts counting a predetermined value when the fourth condition is satisfied after the conveyance of the medium is started. The count unit 33a increments the value of the counter until the fifth condition is satisfied after the fourth condition is satisfied.

Next, the skew detection processing by the control device 30a will be specifically described with reference to FIGS. 9 to 12 are diagrams for explaining the skew detection processing in the second embodiment. 9 to 12, the direction indicated by the arrow 4 is the conveyance direction of the medium 40.
FIG. 9 shows a state in which the medium 40 is transported to a position before a specific sensor. In this case, the medium 40 is not detected by any specific sensor. When the medium 40 is in the state shown in FIG. 9, the transport control unit 341 transports the medium in the transport direction.

  FIG. 10 shows a state in which the medium 40 is detected by some specific sensors. When the medium 40 is in the state shown in FIG. 10, some sensors that detect the medium 40 among specific sensors transmit detection information to the control device 30a. The acquisition unit 31 acquires detection information from some specific sensors. And the determination part 32a determines a transmission source from the acquired detection information, and determines whether the 4th condition was satisfy | filled. In FIG. 10, the determination unit 32a determines that the fourth condition is satisfied. In this case, the count unit 33a starts counting a predetermined value.

  FIG. 11 shows a state in which the medium 40 is detected by all the specific sensors. When the medium 40 is in the state shown in FIG. 11, the specific sensor transmits the detection information to the control device 30a. The acquisition unit 31 acquires detection information from a specific sensor. And the determination part 32a determines a transmission source from the acquired detection information, and determines whether the 5th condition was satisfy | filled. In FIG. 11, the determination unit 32a determines that the fifth condition is satisfied. In this case, the count unit 33a finishes counting a predetermined value. X shown in FIG. 11 corresponds to a predetermined value. And the determination part 32a determines whether the predetermined value X is more than a predetermined threshold value. FIG. 11 shows an example where the predetermined value X is equal to or greater than a predetermined threshold. Therefore, the determination unit 32a determines that the medium 40 is skewed.

  FIG. 12 shows a state where the medium 40 is detected by all the specific sensors. When the medium 40 is in the state shown in FIG. 12, the specific sensor transmits detection information to the control device 30a. The acquisition unit 31 acquires detection information from a specific sensor. And the determination part 32a determines a transmission source from the acquired detection information, and determines whether the 5th condition was satisfy | filled. In FIG. 12, the determination unit 32a determines that the fifth condition is satisfied. In this case, the count unit 33a finishes counting a predetermined value. And the determination part 32a determines whether a predetermined value is more than a predetermined threshold value. FIG. 12 shows an example where the predetermined value is less than the predetermined threshold. Therefore, the determination unit 32a determines that the medium 40 is not skewed. Through the processing described above, the control device 30a detects the skew of the medium 40. This is the end of the description of the skew detection process by the control device 30a.

  FIG. 13 is a flowchart illustrating the flow of the skew detection process of the control device 30a according to the second embodiment. In addition, about the process similar to FIG. 7, the code | symbol similar to FIG. 7 is attached | subjected in FIG. 13, and description is abbreviate | omitted. 13 is started when a medium is inserted into the printing apparatus 1 and conveyed.

  The determination unit 32a determines whether or not the fourth condition is satisfied (ACT201). Specifically, the determination unit 32a determines whether detection information has been acquired from some specific sensors. The determination unit 32a determines that the fourth condition is satisfied when detection information is acquired from some specific sensors. The determination unit 32a determines that the fourth condition is not satisfied when the detection information is not acquired from all the specific sensors or the detection information is acquired from all the specific sensors. When the fourth condition is not satisfied (ACT201: NO), the determination unit 32a repeatedly executes the process of ACT202 until the fourth condition is satisfied.

On the other hand, when the fourth condition is satisfied (ACT 201: YES), the control device 30a executes the process of ACT 105. Thereafter, the determination unit 32a determines whether or not the fifth condition is satisfied (ACT202). Specifically, the determination unit 32a determines whether detection information has been acquired from all the specific sensors. The determination unit 32a determines that the fifth condition is satisfied when detection information is acquired from all of the specific sensors. The determination unit 32a determines that the fifth condition is not satisfied when the detection information is not acquired from all or some of the specific sensors. When the fifth condition is not satisfied (ACT202: NO), the control device 30a repeatedly executes the processes after ACT105.
On the other hand, when the fifth condition is satisfied (ACT202: YES), the counting unit 33a finishes counting the predetermined value X. Thereafter, the control device 30a executes the processes after ACT107.

  According to the printing apparatus 1 configured as described above, the same effects as those of the first embodiment can be obtained.

Hereinafter, a modified example of the control device 30a in the second embodiment will be described.
Although the count unit 33a is configured to count the counter value as a predetermined value in the process of ACT 105, the count unit 33a is not necessarily limited to this. For example, the counting unit 33a may count the time from when the fourth condition is satisfied until the fifth condition is satisfied as a predetermined value. When configured in this way, the determination unit 32a may determine whether or not the time is equal to or greater than the threshold based on the counted time and the threshold in the process of ACT107. If the counted time is equal to or greater than the threshold, the determination unit 32a determines that the medium is skewed. On the other hand, when the counted time is less than the threshold, the determination unit 32a determines that the medium is not skewed.

  Further, the count unit 33a may count the number of steps of the transport motor from when the fourth condition is satisfied until when the fifth condition is satisfied as a predetermined value. In this case, the determination unit 32a may determine whether or not the number of steps is equal to or greater than the threshold based on the counted number of steps and the threshold in the process of ACT 107. If the counted number of steps is equal to or greater than the threshold, the determination unit 32a determines that the medium is skewed. On the other hand, when the counted number of steps is less than the threshold, the determination unit 32a determines that the medium is not skewed.

Hereinafter, modified examples common to the respective embodiments (the first embodiment and the second embodiment) will be described.
The conveyance control unit 341 may be configured to stop conveyance of the medium as an error when it is determined that the medium is skewed. By being configured in this way, it is possible to reduce that the medium is conveyed as it is after it is detected that the medium is skewed.
In each embodiment, the specific sensor is shown as being arranged side by side perpendicular to the medium conveyance direction (see, for example, FIGS. 3 and 9). However, the present invention is not limited to this. For example, the specific sensor may not be arranged side by side perpendicular to the medium conveyance direction.
According to at least one embodiment described above, the printing apparatus 1 includes a plurality of sensors (second detection sensors 13), a printing unit 8, and a determination unit 32. The plurality of sensors are provided in advance in the own device and detect the medium. The printing unit 8 performs printing on a medium. The determination unit 32 determines whether or not the medium is skewed based on information acquired from the sensor. Further, the determination unit 32 determines whether the medium is detected by the sensor from the information acquired from the sensor. Then, the determination unit 32 determines that the medium is skewed when a predetermined value counted before the medium is no longer detected by all the sensors is equal to or greater than a threshold value. The determination unit 32 determines that the medium is not skewed when the predetermined value is less than the threshold value. By having such a configuration, the printing apparatus 1 can detect the skew of the medium while suppressing an increase in cost.

  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, 30 ... Control device, 31 ... Acquisition part, 32 ... Determination part, 33 ... Count part, 34 ... Control part, 341 ... Conveyance control part, 342 ... Print control part, 40 ... Media

Claims (5)

  1. A plurality of sensors that are provided in advance in the device and detect the medium;
    A printing unit for printing on a medium;
    A determination unit that determines whether the medium is skewed based on information acquired from the sensor;
    With
    The determination unit determines whether the medium is detected by the sensor from information acquired from the sensor, and the medium is detected by all of the sensors after the medium is not detected by any of the sensors. It is determined that the medium is skewed when a predetermined value counted until it is not detected is equal to or greater than a threshold value, and the medium is not skewed when the predetermined value is less than the threshold value. A printing apparatus that determines that
  2. A counting unit that counts a time elapsed from when the medium is no longer detected by any of the sensors until the medium is no longer detected by all the sensors, as the predetermined value;
    The determination unit determines that the medium is skewed when the time is equal to or greater than a threshold, and determines that the medium is not skewed when the time is less than the threshold. The printing apparatus as described in.
  3. A counting unit that counts the number of steps of the transport motor from when the medium is no longer detected by any of the sensors until the medium is no longer detected by all of the sensors as the predetermined value;
    The determination unit determines that the medium is skewed when the number of steps is equal to or greater than a threshold, and determines that the medium is not skewed when the number of steps is less than the threshold. Item 4. The printing apparatus according to Item 1.
  4. A transport control unit for controlling transport of the medium;
    4. The printing apparatus according to claim 1, wherein the conveyance control unit stops conveyance of the medium as an error when the determination unit determines that the medium is skewed. 5. .
  5.   The printing apparatus according to claim 1, wherein the sensor detects that the medium is inserted from an insertion port.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918736U (en) * 1982-07-29 1984-02-04
JPH04277151A (en) * 1991-03-04 1992-10-02 Canon Inc Sheet material transport device
JPH04282273A (en) * 1991-03-11 1992-10-07 Hitachi Ltd Printing system
JPH05229697A (en) * 1991-09-20 1993-09-07 Moore Business Forms Inc Rotating device for sheet, sheet-orientating method and sheet processing assembly
JPH11157705A (en) * 1997-11-27 1999-06-15 Nec Corp Printing processor
JP2004175553A (en) * 2002-11-29 2004-06-24 Ricoh Co Ltd Sheet feeder and image forming device
JP2005194016A (en) * 2004-01-05 2005-07-21 Murata Mach Ltd Image forming device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918736U (en) * 1982-07-29 1984-02-04
JPH04277151A (en) * 1991-03-04 1992-10-02 Canon Inc Sheet material transport device
JPH04282273A (en) * 1991-03-11 1992-10-07 Hitachi Ltd Printing system
JPH05229697A (en) * 1991-09-20 1993-09-07 Moore Business Forms Inc Rotating device for sheet, sheet-orientating method and sheet processing assembly
JPH11157705A (en) * 1997-11-27 1999-06-15 Nec Corp Printing processor
JP2004175553A (en) * 2002-11-29 2004-06-24 Ricoh Co Ltd Sheet feeder and image forming device
JP2005194016A (en) * 2004-01-05 2005-07-21 Murata Mach Ltd Image forming device

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