WO2017032257A1

WO2017032257A1 - Method for controlling printer and printer

Info

Publication number: WO2017032257A1
Application number: PCT/CN2016/095720
Authority: WO
Inventors: 张春光; 胡广东; 邓少华; 解丝艳; 王春涛
Original assignee: 山东新北洋信息技术股份有限公司
Priority date: 2015-08-25
Filing date: 2016-08-17
Publication date: 2017-03-02
Also published as: CN106476453B; CN106476453A

Abstract

A method for controlling a printer, wherein the printer comprises a first sensor, a print head, and a second sensor which are sequentially arranged in a conveying path of the printer, said method comprising: determining whether the first sensor has detected the presence of printing paper; determining whether the second sensor has detected the presence of the printing paper when the first sensor has detected the presence of the printing paper; and controlling the printing paper to move backward when the second sensor has detected the presence of the printing paper so that the top edge of the printing paper reaches a detection position of the second sensor, or controlling the printing paper to move forward when the second sensor has not detected the presence of the printing paper so that the top edge of the printing paper reaches the detection position of the second sensor.

Description

Printer control method and printer

Technical field

The present disclosure relates to the field of printing apparatuses and control methods, and, for example, to a method of controlling a printer and a printer using the same.

Background technique

The printer is one of the output devices used in conjunction with a computer. It is used to print computer processing results on related media, usually printed on paper, and is an indispensable important device for modern social office and home use.

A printer having an open conveying path, which is widely used in the related art, generally includes an upper cover and a base. The upper cover can be opened or closed with respect to the base, and a printing paper is formed between the upper cover and the base when the upper cover is closed relative to the base. Delivery channel. When the printer is jammed, you need to open the top cover to eliminate the paper jam error of the printer, and then close the upper cover to continue using. The first end of the conveying passage is provided with a paper inlet for inputting printing paper, and the second end of the conveying passage is provided with a paper discharging port for discharging the printing paper, and the conveying channel is provided with a conveying unit and a printing head, wherein the conveying unit is used for the conveying unit The driving paper is moved from the paper inlet to the paper exit in the conveying path, and the printing head is used to print a preset image on the printing paper. Before the printer works, it is necessary to mount the paper into the transport path so that the print head can print a predetermined image on the paper. During use, when the user installs the printing paper, the first method is to insert the leading edge of the printing paper into the paper opening when the upper cover is closed relative to the base; the second method is to open the upper cover first, then The leading edge of the printing paper is dragged from the paper feeding port to the paper exit port, and then the upper cover is closed. The user selects any one of the printing paper mounting methods according to his own usage habits to install and print the printing paper.

When the user installs the printing paper by the first method, the printer detects the leading edge of the printing paper by the signal change of the sensor output at the paper inlet, and accordingly controls the conveying unit to start the leading edge of the printing paper to the preset position. print.

When the user installs the printing paper by the second method, since the sensor at the paper inlet is always covered by the printing paper after the user closes the upper cover, the printer cannot detect the sensor signal before performing the printing task. The change sends the paper to the preset position. Normally, the printer performs a print job directly on the installed paper. At this time, a piece of paper between the paper head and the print start position is wasted, or the print position of the print content is inaccurate.

Therefore, there is a need in the market for a printer control method and a printer using the same, which can effectively reduce paper waste while ensuring that the position of the printer on the paper is more accurate.

Summary of the invention

The present disclosure provides a control method and a printer for a printer, which solves the problem of paper waste or inaccurate print position of print contents in the related art.

A control method of a printer, the printer comprising a first sensor (151), a print head (131), and a second sensor (152), wherein the first sensor (151), the print head (131), and The second sensor (152) is sequentially disposed in the feeding path (23) of the printer along the paper feeding direction of the printing paper, and the control method includes:

Detecting whether the first sensor (151) is in a paper state;

Detecting whether the second sensor (152) is in a paper state when the first sensor (151) is in a paper state;

When the second sensor (152) is in a paper state, controlling the paper to be ejected, so that the paper head of the printing paper reaches the detection position of the second sensor (152);

When the second sensor (152) is in a paperless state, the printing paper is controlled to feed so that the paper head of the printing paper reaches the detection position of the second sensor (152).

Optionally, when the paper head of the printing paper reaches the detecting position of the second sensor (152), the printing paper is driven to move a preset length, and the printing starting position of the printing paper is sent to the printing. The print position of the head (131).

Optionally, the printer further includes an upper cover (20) and a base (21), the upper cover (20) being openable or closable relative to the base (21), when the upper cover (20) When the base (21) is closed, the upper cover (20) and the base (21) form the conveying passage (23);

When the first sensor (151) is in a paper state, detecting whether the second sensor (152) is in a paper state includes:

Detecting whether the upper cover (20) is in a closed state; when the upper cover (20) is in a closed state, detecting whether the second sensor (152) is in a paper state.

Optionally, when the second sensor (152) is in a paper state, controlling the paper to be ejected, so that the paper head of the printing paper reaches the detection position of the second sensor (152) includes:

The printing paper detects a state of the second sensor (152) every time a predetermined distance is ejected, and when detecting that the second sensor (152) is in a paperless state, determining that the paper head of the printing paper arrives The detection position of the second sensor (152).

Optionally, during the controlling the paper ejection process of the printing paper, the method further includes:

Counting a paper ejection distance of the printing paper by using a first counter, the printing paper adding a count value of the first counter every time a paper is ejected by a preset distance, when the counting value of the first counter is equal to When the first pre-designed value has not detected that the second sensor (152) is in a paperless state, a paper jam alarm is issued.

Optionally, when the second sensor (152) is in a paperless state, controlling the paper feeding, so that the paper head of the printing paper reaches the detecting position of the second sensor (152) includes:

The printing paper detects a state of the second sensor (152) every time a predetermined distance is fed, and when detecting that the second sensor (152) is in a paper state, determining that the paper head of the printing paper arrives The detection position of the second sensor (152).

Optionally, in controlling the paper feeding process, the method further includes:

Counting a paper feed distance of the printing paper by using a second counter, the printing paper adding a count value of the second counter every time a paper is fed a predetermined distance, when the count value of the second counter is equal to When the second pre-designed value has not detected that the second sensor (152) is in a paper state, a paper jam alarm is issued.

A printer comprising: a transport channel (23), a print head (131), a transport unit (14), a first sensor (151), a second sensor (152), and a control unit (10);

The print head (131) for performing printing on the printing paper;

The conveying unit (14) is configured to drive the printing paper to move in the conveying passage (23);

The first sensor (151) and the second sensor (152), wherein the first sensor (151), the print head (131), and the second sensor (152) follow the printing paper The paper direction is sequentially disposed in the conveying passage (23) of the printer;

The control unit (10) is configured to detect whether the first sensor (151) is in a paper state, and when detecting that the first sensor (151) is in a paper state, detecting the second sensor (152) Whether it is a paper-like state, when detecting that the second sensor (152) is in a paper state, controlling the conveying unit (14) to drive the printing paper to eject, so that the paper head of the printing paper reaches the paper a detecting position of the second sensor (152); when detecting that the second sensor (152) is in a paperless state, controlling the conveying unit (14) to drive the printing paper to feed the paper head of the printing paper A detection position of the second sensor (152) is reached.

Optionally, the control unit (10) is further configured to control, when the paper head of the printing paper reaches the detecting position of the second sensor (152), the conveying unit (14) to drive the printing paper movement pre- The length is set to convey the printing start position of the printing paper to the printing position of the print head (131).

Optionally, further comprising an upper cover (20), a base (21) and a third sensor (153);

The upper cover (20) can be opened or closed relative to the base (21), and when the upper cover (20) is closed relative to the base (21), the upper cover (20) The conveying passage (23) is formed between the bases (21), and the third sensor (153) is configured to output a signal indicating that the upper cover (20) is in an open state or a closed state;

The control unit (10) is further configured to detect the upper cover (20) by detecting a signal output by the third sensor (153) when detecting that the first sensor (151) is in a paper state. Whether it is in a closed state, when it is detected that the upper cover (20) is in a closed state, it is detected whether the second sensor (152) is in a paper state.

Optionally, the control unit (10) is configured to: when detecting that the second sensor (152) is in a paper state, the paper head of the printing paper reaches the second sensor (152) by: Detection location:

The control unit (10) detects the state of the second sensor (152) every time the control unit (14) controls the printing unit to drive the paper to eject a predetermined distance, when the second sensor is detected ( 152) When the paper is in a paperless state, it is determined that the paper head of the printing paper reaches the detection position of the second sensor (152).

Optionally, an indication unit (16) is further included for indicating a status of the printer;

The control unit (10) is further configured to count the paper ejection distance of the printing paper by using a first counter, and the control unit (10) controls the conveying unit (14) to drive the printing paper to eject one paper. When the preset distance is set, the count value of the first counter is incremented by 1. When the count value of the first counter is equal to the first pre-designed value, if the second sensor (152) has not been detected as being paperless, The indication unit (16) is controlled to perform a paper jam alarm.

Optionally, the control unit (10) is configured to: when detecting that the second sensor (152) is in a paperless state, the paper head of the printing paper reaches the second sensor (152) by: Detection location:

The control unit (10) detects a state of the second sensor (152) every time the control unit (14) controls the printing unit to drive the printing paper to a predetermined distance, when the second sensor is detected ( 152) When the paper is in the paper state, it is determined that the paper head of the printing paper reaches the detection position of the second sensor (152).

The control unit (10) is further configured to count the paper feeding distance of the printing paper by using a second counter, and the control unit (10) controls the conveying unit (14) to drive the printing paper to feed one paper. When the preset distance is set, the count value of the second counter is incremented by 1, when the count value of the second counter is equal to When the second pre-designed value has not detected that the second sensor (152) is in a paper state, the indication unit (16) is controlled to perform a paper jam alarm.

The present disclosure provides a first sensor and a second sensor for detecting the position of the printing paper in the conveying path of the printer. Therefore, when the printer replaces the printing paper, the user can select the printing paper when the upper cover is in the closed state. The paper is installed by inserting the paper from the paper inlet. You can also choose to open the upper cover first, then drag the leading edge of the paper from the paper inlet to the paper exit and then close the upper cover to install the paper, no matter which user chooses. By way of installing the printing paper, the printer can transfer the printing start position of the printing paper to the printing position of the printing head, so that the position of the printing content on the printing paper is more accurate. Through the present disclosure, it is possible to effectively solve the problem that the printer of the related art causes paper waste due to improper installation position of the paper during the printing process, and can ensure the position of the printed content on the printing paper is more accurate.

DRAWINGS

1 is a schematic diagram showing the connection of components of a printer according to Embodiment 1 of the present disclosure;

2 is a schematic cross-sectional view showing the upper cover of the printer in a closed state according to Embodiment 1 of the present disclosure;

3 is a three-dimensional structural view of the printer upper cover in an open state according to Embodiment 1 of the present disclosure;

4 is a schematic cross-sectional view showing the printer upper cover in a closed state according to Embodiment 2 of the present disclosure;

5 is a flowchart of a method for controlling a printer according to Embodiment 1 of the present disclosure;

6 is a flowchart of a method for controlling a printer according to Embodiment 2 of the method of the present disclosure;

7 is a flowchart of a method for controlling a printer according to Embodiment 3 of the present disclosure;

FIG. 8 is a flowchart of a method for controlling a printer according to Embodiment 4 of the present disclosure.

In the picture:

1, printer; 10, control unit; 11, communication unit; 12, storage unit; 13, printing unit; 131, print head; 132, printing roller; 14, transport unit; 141, motor driver; 142, motor; Sensor unit; 151, first sensor; 152, second sensor; 153, third sensor; 16, indicating unit; 20, upper cover; 21, base; 22, shaft; 23, conveying passage; 24, paper inlet 25, paper exit port; 26a, first transport roller; 26b, second transport roller; 27a, third transport roller; 27b, fourth transport roller.

Implementation

The technical solutions of the present disclosure will be described below in conjunction with the accompanying drawings and by alternative embodiments. The features in the following embodiments may be combined with each other arbitrarily without conflict.

The present disclosure discloses a printer that can include a top cover, a base, a printhead, a paper feed port, and a first sensor disposed at a position of the paper feed port. A second sensor may be further included, the second sensor and the first sensor are respectively disposed at two sides of the print head, the second sensor is disposed at a predetermined position from the print head, and the upper cover and the base are closed to form a conveying passage for conveying the paper. The upper cover can be opened or closed relative to the base, and the first sensor and the second sensor are located in the delivery channel. Since the printer in the present disclosure has the above structure, when the printer replaces the printing paper, the user can select to install the printing paper by inserting the paper head of the printing paper from the paper feeding opening when the upper cover is in the closed state, or can select the first Open the top cover, then pull the leading edge of the paper from the paper inlet to the paper exit and then close the top cover to install the paper. The printer can print the paper regardless of the way the printer chooses to install the paper. The position is transported to the print position of the printhead, making the position of the printed content on the print paper more accurate.

The structure of the printer in the present disclosure will be described below by way of an alternative embodiment.

Device embodiment 1

As shown in FIG. 1, it is a connection structure between a plurality of work units in the printer in the embodiment, and the printer 1 may include a control unit 10, a communication unit 11, a storage unit 12, a printing unit 13, a conveying unit 14, and a sensor unit. 15. The control unit 10 is connected to the communication unit 11, the storage unit 12, the printing unit 13, the transport unit 14, the sensor unit 15, and the indication unit 16, respectively.

The control unit 10 is configured to issue a control signal, control the operation of other work units, and perform calculation and processing of data. For example, the control unit 10 issues a control signal to control the communication unit 11 to perform data transfer between the printer 1 and the print requesting device (computer or the like), or to control the printing unit 13 to perform image printing or the like.

The communication unit 11 is for performing data transfer between the printer 1 and the print requesting device. For example, the communication unit 11 receives the print control command and the print data transmitted by the print requesting device, and transmits the print control command and the print data to the control unit 10, and then the control unit 10 controls the corresponding work unit to operate.

The storage unit 12 is used to store the control program of the printer 1 and to control the data and variables required during the running of the program. For example, the storage unit 12 is configured to store a first preset threshold T1, a second preset threshold T2, a first pre-designed value C1, a second pre-designed value C2, and the like. The first preset threshold T1 is used to determine whether there is a printing paper located at the detecting position of the first sensor 151 of the sensor unit 15; the second preset threshold The value T2 is used to determine whether or not the printing paper is located at the detection position of the second sensor 152 of the sensor unit 15; the first pre-designed value C1 and the second pre-designed value C2 are used to determine whether the printer 1 is jammed.

The printing unit 13 is for printing an image on a printing paper in accordance with a control signal output from the control unit 10. In this embodiment, the printing unit 13 can be a pin printing unit, a thermal printing unit, a thermal transfer printing unit or an inkjet printing unit. Of course, other printing units that can be applied to the printer 1 can be used as long as the printing effect can be ensured. And the printing unit that can be applied can be. Optionally, in this embodiment, the printing unit 13 is a thermal printing unit, including a print head 131 and a printing roller 132. When the printer 1 performs a printing operation, the printing paper passes between the printing head 131 and the printing roller 132, and prints. The heat sensitive layer of the paper is in contact with the print head 131, and the print head 131 includes a plurality of heat generating bodies arranged in a row at equal intervals in the width direction of the printing paper (i.e., a direction perpendicular to the conveying direction of the printing paper). When the printing unit 13 performs the printing operation, the heat generating body of the printing head 131 generates heat to cause a chemical change of the heat sensitive layer of the printing paper to form an image on the printing paper.

The conveying unit 14 is for driving the printing paper to move in the conveying path of the printing paper. The transport unit 14 may include a motor driver 141 and a motor 142 for supplying an operating current to the motor 142 according to a control signal output from the control unit 10 to drive the output shaft of the motor 142 to rotate. The output shaft of the motor 142 is connected to a conveying roller disposed in a conveying passage of the printing paper (hereinafter referred to as a conveying passage). When the output shaft of the motor 142 is rotated, the conveying roller in the conveying passage rotates accordingly, thereby driving the printing paper at Move in the conveying channel. In this embodiment, in addition to image printing for cooperation with the print head 131, the print roller 132 is also coupled to the output shaft of the motor 142 for driving the printing paper as a transport roller to move in the transport path.

The sensor unit 15 may be a first sensor 151 and a second sensor 152 included in the transport path for detecting the position of the printing paper in the transport path. Optionally, the first sensor 151 and the second sensor 152 are photoelectric sensors, and of course, other types of sensors capable of implementing the detecting function may be used as long as the detecting task of the position of the printing paper can be completed. In this embodiment, the first sensor 151 and the second sensor 152 select a photoelectric sensor, which may be a reflective sensor or a transmissive sensor. Since the working principle of the two is the same, the following two are collectively referred to as a sensor, and work on a reflective sensor or a transmissive sensor. The principle is explained. The sensor comprises a light generator and a light receiver. When the sensor is a reflective sensor, the light generator and the light receiver are located on the same side of the conveying channel, and the light receiver receives the light emitted by the light generator reflected by the printing paper or the channel plate and the light signal It is converted into an electrical signal and transmitted to the control unit 10. When the sensor is a transmissive sensor, the light generator and the photoreceiver are respectively located on both sides of the transport channel, and the light receiver receives the light emitted by the light generator or receives the light emitted by the generator transmitted through the printing paper. The light converts the optical signal into an electrical signal and transmits the electrical signal to the control unit 10. When there is a printing paper located at the detecting position of the sensor (hereinafter referred to as the sensor is in a paper state), the optical receiver outputs a first signal when no printing paper is located at the detecting position of the sensor (hereinafter referred to as the sensor is paperless). The light receiver outputs a second signal, and the control unit 10 determines whether the sensor is in a paper state or a paperless state by detecting a signal output from the light receiver, thereby determining the position of the printing paper in the conveying path. For example, when the sensor changes from the paper state to the paperless state, it is determined that the printing paper leaves the detection position of the sensor; when the sensor changes from the paperless state to the paper state, it is determined that the printing paper reaches the detection position of the sensor.

Optionally, the sensor unit 15 may further include a third sensor 153 for outputting a signal indicating that the upper cover of the printer 1 is in a closed state or an open state, and when the upper cover of the printer 1 is in a closed state, the third sensor 153 outputs The third signal, when the upper cover of the printer 1 is in the open state, the third sensor 153 outputs a fourth signal, and the control unit 10 determines whether the upper cover of the printer 1 is in the closed state by detecting the signal output from the third sensor 153.

Optionally, the printer 1 may further include an indicating unit 16 for displaying the state of the printer 1 in a light, sound, or the like according to a control signal of the control unit 10. The indicating unit 16 may be an indicator light, a liquid crystal display, or a buzzer. And voice devices, etc. For example, when the printer 1 is in the paper jam state, the indicating unit 16 uses a buzzer to perform a buzzer alarm to remind the user to process the paper jam, thereby reducing the waste caused by the paper jam and reducing the probability of the printer 1 being damaged. The experience is better.

2 and 3 show an alternative structure of the printer in this embodiment. As shown in FIGS. 2 and 3, the printer 1 includes an upper cover 20 and a base 21, and the upper cover 20 and the base 21 are rotatable through the shaft 22. The pivoting of the upper cover 20 can be reversed about the axis 22 so as to be openable or closable relative to the base 21. The print head 131 is mounted on the upper cover 20, the print roller 132 is mounted on the base 21, the print roller 132 is rotatable about its own axis, and the print roller 132 is coupled to the transport unit 14 for rotation by the transport unit 14. When the upper cover 20 is closed relative to the base 21, a transport path 23 is formed between the upper cover 20 and the base 21, and the print head 131 and the print roller 132 are tangent in the transport path 23, and the tangent positions of the two are the print head 131. Print location.

The second sensor 152 and the first sensor 151 are respectively disposed on both sides of the print head 131, and the second sensor 152 is disposed at a predetermined position from the print head 131. In the paper feeding direction of the printing paper, the first sensor 151, the print head 131, and the second sensor 152 are sequentially disposed in the conveying path, that is, in the paper feeding direction of the printing paper, the first sensor 151 is located upstream of the printing head 131, and the second The sensor 152 is located downstream of the printhead 131. In the embodiment shown in Fig. 2, the arrow A is the paper feed direction of the printing paper, and the paper feed port 24, the first sensor 151, the print head 131, the second sensor 152, and the paper discharge port 25 are in the paper feed direction of the printing paper. The conveying passages 23 are arranged in order. In this embodiment, the detection position of the second sensor 152 is hit. The distance between the printing positions of the print head 131 is the first distance L1. The printing roller 132 is drivingly connected to the output shaft of the motor 142. When the output shaft of the motor 142 rotates, the printing roller 132 rotates accordingly, thereby driving the printing paper to move in the conveying path 23. In this embodiment, the printing paper is not additionally disposed. The conveying roller has a simpler structure.

In this embodiment, the first sensor 151 and the second sensor 152 are both reflective sensors, and both the light generator and the light receiver are fixedly connected to the base 21. Of course, the first sensor 151 or the second sensor 152 may also be a transmissive sensor. When the first sensor 151 or the second sensor 152 is a transmissive sensor, optionally, the light generator of the transmissive sensor is fixedly connected to the upper cover 20, and transmitted. The light receiver of the sensor is fixedly connected to the base 21; or the light receiver is fixedly connected to the upper cover 20, and the light generator is fixedly connected to the base 21. When the upper cover 20 is closed relative to the base 21, the light generator and the light receiver are vertically disposed in the transport path 23 to ensure that the transmission sensor can be used normally.

As shown in FIG. 3, as an optional implementation manner, the sensor unit of the printer 1 in this embodiment may further include a third sensor 153. The third sensor 153 is fixedly mounted on the side wall of the base 21. When the upper cover 20 is closed relative to the base 21 (hereinafter referred to as the upper cover 20 is in a closed state), the upper cover 20 is engaged with the third sensor 153, and is controlled. The unit 10 emits a third signal; when the upper cover 20 is opened relative to the base 21 (hereinafter referred to as the upper cover 20 is in an open state), the upper cover 20 is separated from the third sensor 153, and the third sensor 153 is issued to the control unit 10 at this time. The fourth signal. When the upper cover 20 is engaged or disengaged from the third sensor 153, the third sensor 153 outputs a different signal, and the control unit 10 determines the state of the upper cover 20 by detecting the signal output from the third sensor 153.

In the embodiment, the first sensor 151 and the second sensor 152 are disposed in the conveying passage 23, and the two can be used together to judge the position of the printing paper located in the conveying passage 23, and then print through the control unit 10 and the conveying unit 14. The position of the paper is adjusted and then printed, which saves paper and is more environmentally friendly. At the same time, it can ensure the position of the printed image and text on the printing paper is more accurate and improve the printing effect.

Device embodiment 2

As shown in FIG. 4, it is the printer proposed in this embodiment. The structure of the printer in this embodiment is basically the same as that of the printer in the first embodiment, and may include a control unit, a communication unit, a storage unit, a printing unit, a transport unit, and a sensor unit, and the control unit and the communication unit and the storage unit, respectively. The unit, the printing unit, the conveying unit, the sensor unit, and the indicating unit are connected. The sensor unit in this embodiment may also include a first sensor 151, a second sensor 152, and a third sensor 153.

The difference between this embodiment and the device embodiment 1 is that the printer in this embodiment is also provided with a bit. The first conveying roller 26a, the second conveying roller 26b, the third conveying roller 27a, and the fourth conveying roller 27b in the conveying path 23. As an alternative embodiment, in the paper feeding direction of the printing paper, the first conveying roller 26a and the second conveying roller 26b are disposed upside down and located upstream of the printing head 131; the third conveying roller 27a and the fourth conveying roller 27b are vertically opposed It is disposed and located downstream of the print head 131. The first conveying roller 26a and the third conveying roller 27a are mounted on the base 21 and are rotatable about their own axes; the second conveying roller 26b and the fourth conveying roller 27b are mounted on the upper cover 20, and are also rotatable about their own axes. When the upper cover 20 is closed with respect to the base 21, the first conveying roller 26a and the second conveying roller 26b are tangentially fitted in the conveying path 23, and the third conveying roller 27a and the fourth conveying roller 27b are tangent in the conveying path 23 In cooperation, the first conveying roller 26a and the third conveying roller 27a are drivingly coupled to the output shaft of the motor 142. When the output shaft of the motor 142 rotates, the first conveying roller 26a and the third conveying roller 27a rotate accordingly, the first conveying roller 26a drives the second conveying roller 26b to rotate, and the third conveying roller 27a drives the fourth conveying roller 27b to rotate. The printing paper is driven to move in the conveying path 23.

Since four conveying rollers are provided in addition to the printing roller 132 in the present embodiment, the operation of the printing paper is made smoother during the process of conveying the printing paper.

In the printer of the embodiment of the present disclosure, when the printer replaces the printing paper, the user can insert the paper head of the printing paper from the paper feeding port 24 when the upper cover 20 is in the closed state, or open the upper cover 20 first, and then the leading edge of the printing paper. The upper cover 20 is closed after being pulled from the paper feed port 24 to the paper exit port 25.

The embodiment of the present disclosure also discloses a control method of a printer, which may be, but is not limited to, performing control on a printer of an embodiment of the present disclosure.

Method embodiment 1

As shown in FIG. 5, the control method may include the following steps:

In S100, it is detected whether the first sensor is in a paper state.

The control unit detects whether the first sensor located upstream of the print head in the transport path is in a paper state. For the printer provided in the embodiment of the present disclosure, the control unit 10 determines whether the first sensor 151 is present by detecting the signal output by the first sensor 151. Paper status.

In step S110, when the first sensor is in the paper state, it is detected whether the second sensor is in a paper state.

When it is detected that the first sensor located upstream of the print head in the transport unit is in a paper state, the control unit detects whether the second sensor located downstream of the print head in the transport path is in a paper state, for the printer provided by the embodiment of the present disclosure, when When the signal output from the first sensor 151 determines that the first sensor 151 is in the paper state, the control unit 10 determines the second sensor by detecting the signal output by the second sensor 152. Whether the device 152 is in a paper state.

Optionally, when detecting that the first sensor located upstream of the print head in the transport unit is in a paper state, the control unit first detects whether the upper cover of the printer is in a closed state, and when detecting that the upper cover of the printer is in a closed state, controlling The unit re-detects whether the second sensor is in a paper state. For the printer provided by the embodiment of the present disclosure, the control unit 10 determines whether the upper cover 20 of the printer is closed relative to the base 21 by detecting a signal output by the third sensor 153.

In S120, when the second sensor is in the paper state, the paper is controlled to eject the paper, so that the paper head of the printing paper reaches the detecting position of the second sensor; when the second sensor is in the paperless state, the printing paper is controlled to be fed. The paper head of the printing paper reaches the detection position of the second sensor.

The control unit controls the paper ejection or paper feeding according to the state of the second sensor to convey the paper head of the printing paper to the detecting position of the second sensor. For the printer provided by the embodiment of the present disclosure, when the second sensor 152 has paper In the state, the paper is controlled to eject the paper, so that the paper head of the printing paper reaches the detecting position of the second sensor 152, and when the second sensor 152 is in the paperless state, the printing paper is controlled to be fed, so that the paper head of the printing paper reaches the second sensor 152. Detection location.

Optionally, in order to ensure that the position of the printed content on the printing paper is more accurate, when the paper head of the control printing paper is moved to the detecting position of the second sensor, the driving paper is moved to a preset length, and the printing starting position of the printing paper is started. The print position delivered to the printhead.

Optionally, when controlling the paper exit, the state of the second sensor is detected every time the paper is ejected by a preset distance, and when the second sensor is detected to be in a paperless state, determining that the paper of the paper reaches the second sensor The detection position; when controlling the paper feeding, the state of the second sensor is detected every time the printing paper feeds a predetermined distance, and when the second sensor is detected to be in the paper state, it is determined that the paper head of the printing paper reaches the second sensor Detection location.

Optionally, the first counter is used to count the paper ejection distance of the printing paper, and the counting value of the first counter is incremented by one when the printing paper is separated by a preset distance, when the counting value of the first counter is equal to the first pre-design If the second sensor is not detected as a paperless state, a paper jam alarm is issued; the second counter is used to count the paper feed distance, and the second counter is counted each time the paper feeds a predetermined distance The value is incremented by 1. When the count value of the second counter is equal to the second pre-designed value, if the second sensor is not detected to be in a paper state, a paper jam alarm is issued.

In the printer control method of the embodiment, when the first sensor is in the paper state, the printer selects the paper feed or the paper feed according to the state of the second sensor to transport the paper head of the printing paper to the detection position of the second sensor, and is implemented by the present disclosure. Example of the printer and its control method, when the printer replaces the printing paper, the user can To select the paper to be inserted from the paper inlet when the top cover is closed, you can also choose to open the top cover first, then drag the leading edge of the paper from the paper inlet to the paper exit. The printing paper is installed by closing the upper cover. Regardless of which method the user selects to install the printing paper, the printer can transport the paper head of the printing paper to the detecting position of the second sensor, and then the predetermined length can be moved by driving the printing paper. The printing start position of the printing paper is conveyed to the printing position of the printing head. Through the disclosure, the problem that the related art printer wastes paper due to improper installation position of the paper during the printing process can be effectively solved, and the printing content can be ensured on the printing paper. The location is more accurate.

Method embodiment two

The flow of the control method in this embodiment is an optional embodiment of the first embodiment of the method. As shown in FIG. 6, the control method may include the following steps:

In S200, it is detected whether the first sensor is in a paper state.

The control unit reads the signal output by the first sensor, and detects whether the first sensor is in a paper state by a signal output by the first sensor. For example, the control unit receives the signal output by the first sensor and compares the signal with the first preset threshold T1. When the signal output by the first sensor is greater than the first preset threshold T1, it is determined that the printing paper is located at the first sensor. The detection position, that is, the first sensor is in a paper state, the printer performs step S210; when the signal output by the first sensor is not greater than the first preset threshold T1, it is determined that the first sensor is in a paperless state, and the printer proceeds to step S200.

In S210, it is detected whether the second sensor is in a paper state.

When the control unit detects that the first sensor is in the paper state, the control unit reads the signal output by the second sensor, and detects whether the second sensor is in the paper state by the signal output by the second sensor. For example, the control unit compares the signal output by the second sensor with a second preset threshold T2 stored in the storage unit, and determines that the printing paper is located at the second when the signal output by the second sensor is greater than the second preset threshold T2. The detection position of the sensor, that is, the second sensor is in a paper state, the printer performs step S220; when the signal output by the second sensor is not greater than the second preset threshold T2, it is determined that the second sensor is in a paperless state, and the printer performs step S230.

In S220, the paper is ejected until the paper head of the printing paper reaches the detection position of the second sensor.

When the control unit detects that the second sensor is in the paper state, the control conveying unit drives the paper to eject the paper, that is, the driving paper moves in the conveying passage in the opposite direction to the direction indicated by the arrow A in FIG. 2, and the printing paper moves. a preset distance, the control unit detects a state of the second sensor, wherein the preset distance may be a minimum unit distance. For the printer provided by the embodiment of the present disclosure, when the motor 142 of the transport unit 14 is a stepping motor, The minimum unit distance is the printing paper when the stepping motor steps once When the motor 142 of the conveying unit 14 is a DC motor, the minimum distance is the moving distance of the printing paper when the output shaft of the DC motor rotates by one unit time, for example, the unit time is 1 microsecond. The printing paper continues to eject the paper until the control unit detects that the second sensor changes from the paper state to the paperless state, and determines that the printing paper leaves the detecting position of the second sensor, that is, the paper head of the printing paper reaches the detecting position of the second sensor. At this time, the printer executes step S240.

In S230, paper is fed until the paper end of the printing paper reaches the detection position of the second sensor.

When the control unit detects that the second sensor is in a paperless state, the control conveying unit drives the printing paper to feed, that is, drives the printing paper to move in the conveying passage in the direction indicated by the arrow A in FIG. 2, and the printing paper moves by a preset distance. The control unit detects a state of the second sensor, wherein the preset distance may be a minimum unit distance. The printing paper continues to feed until the control unit detects that the second sensor changes from the paperless state to the paper state, and determines that the printing paper reaches the detection position of the second sensor, that is, the paper head of the printing paper reaches the detection position of the second sensor. At this time, the printer executes step S240.

In S240, the printing paper is moved to a preset length, and the printing start position of the printing paper is conveyed to the printing position of the printing head.

When the paper head of the printing paper reaches the detecting position of the second sensor, the control unit controls the conveying unit to continue to drive the printing paper to move the preset length, that is, the distance L at which the printing paper needs to be fed or ejected, and the printing starting position of the printing paper. The print position delivered to the printhead. The control unit calculates the distance L that the printing paper needs to be fed or ejected according to the first distance L1, the preset printing start position on the printing paper and the distance L2 between the paper ends of the printing paper, when it is detected by step S220 or step S230 When the paper head of the printing paper reaches the detection position of the second sensor, the paper feed or the ejecting distance L is controlled. For example, when the printing start position of the printing paper is the paper head of the printing paper, the control unit controls the conveying unit to drive the printing paper to eject the paper first distance L1 to convey the paper head of the printing paper to the printing position of the printing head, wherein The distance L1 is the distance between the detection position of the second sensor and the printing position of the print head.

When working with the control method of the present disclosure, the printer can transfer the printing start position of the printing paper to the printing position of the printing head regardless of the manner in which the user selects the printing paper, which can effectively solve the related art printer in the printing process. The problem of wasted paper due to improper paper installation position ensures that the position of the printed content on the printing paper is more accurate.

Method embodiment three

The control method in this embodiment differs from the control method in the second embodiment in that, after detecting that the first sensor is in a paper state, first detecting whether the upper cover is closed relative to the base by the third sensor, when detecting When the cover is closed relative to the base, the control unit detects the state of the second sensor.

The control method in this embodiment is described below by the control method flow. As shown in FIG. 7, the control method in this embodiment is another optional embodiment of the method embodiment 1. The optional steps of the control method in this embodiment are:

In S200, detecting whether the first sensor is in a paper state, when the first sensor is in a paper state, step S200a is performed;

In S200a, it is detected whether the upper cover of the printer is in a closed state, and if yes, executing step S210, if no, continuing to detect whether the upper cover is in a closed state;

In S210, it is detected whether the second sensor is in a paper state, if the second sensor is in a paper state, step S220 is performed, and if the second sensor is in a paperless state, step S230 is performed;

In S220, the paper is ejected until the paper head of the printing paper reaches the detection position of the second sensor;

In S230, feeding the paper until the paper head of the printing paper reaches the detection position of the second sensor;

After the step S220 or S230 is completed, the same as the step in the second embodiment of the method, the step S240 is executed to drive the printing paper to move the preset length, and the printing start position of the printing paper is sent to the printing position of the printing head. The remaining optional control methods are not described here, and are the same as in the second embodiment of the method.

With the printer control method in this embodiment, when the upper cover of the printer is in an open state, the printer needs to wait for the user to close the upper cover of the printer before feeding the print start position of the printing paper to the print head according to the state of the second sensor. The print position is safer, more reliable, and has a better user experience.

Method embodiment four

An optional process of the control method in this embodiment is another optional embodiment of the method embodiment 1. As shown in FIG. 8, the method includes the following steps:

In S300, it is detected whether the first sensor is in a paper state.

The control unit detects whether the first sensor is in a paper state by using a signal output by the first sensor, and when detecting that the first sensor is in a paper state, in step S310, when detecting that the first sensor is in a paperless state, proceeding to step S300 .

In S310, it is detected whether the upper cover is in a closed state.

The control unit detects whether the upper cover is in the closed state by the signal output by the third sensor. When it is detected that the upper cover is in the closed state, in step S320, when it is detected that the upper cover is in the open state, the process proceeds to step S310.

In S320, it is detected whether the second sensor is in a paper state.

The control unit detects whether the second sensor is in a paper state by a signal output by the second sensor, and when it is detected that the second sensor is in a paper state, step S330 is performed, and when the second sensor is detected to be paperless In the state, step S370 is performed.

In S330, the first counter is initialized.

The control unit initializes the count value of the first counter. For example, the counter value of the first counter is set to zero, and the first counter is used to calculate the eject distance of the printing paper. When the motor of the conveying unit is a stepping motor, the first counter is used to record the stepping motor during the ejecting process. The number of steps, the control unit can calculate the paper ejection distance of the printing paper by the number of steps of the stepping motor and the moving distance of the printing paper when the stepping motor steps. When the motor of the conveying unit is a DC motor, the first counter is used to record the time of the paper ejection, and the control unit can calculate the paper ejection distance of the printing paper by the paper ejection time and the moving distance of the printing paper per unit time.

In S340, the printing paper is ejected by a predetermined distance and the count value of the first counter is incremented by one.

The control unit controls the transport unit to drive the paper to eject a predetermined distance and increments the count value of the first counter by one. When the motor of the conveying unit is a stepping motor, the stepping motor is controlled to be stepped once to eject the printing paper by a preset distance, and the count value of the first counter is incremented by one. When the motor of the conveying unit is a DC motor, the DC motor is controlled to be energized for one unit time to eject the printing paper by a preset distance, and the count value of the first counter is incremented by one.

In S350, it is detected whether the second sensor is in a paperless state.

The control unit detects the state of the second sensor, determines whether the second sensor is in a paperless state, and when it is determined that the second sensor is in a paperless state, step S420 is performed, and when it is determined that the second sensor is in a paper state, step S360 is performed.

In S360, it is determined whether the count value of the first counter is equal to the first pre-designed value.

Comparing the count value of the first counter with the first pre-designed value C1, determining whether the count value of the first counter is equal to the first pre-designed value C1, and when the count value of the first counter is equal to the first pre-designed value C1, performing Step S410, when the count value of the first counter is not equal to the first pre-designed value C1, proceeding to step S340. Wherein, the first pre-designed value C1 is pre-stored in the storage unit, and may be calculated in advance according to the maximum allowable eject length.

In S370, the second counter is initialized.

The control unit initializes the count value of the second counter and sets the count value of the second counter to zero. The second counter is used to calculate the paper feed distance of the printing paper. When the motor of the conveying unit is a stepping motor, the second counter is used to record the number of steps of the stepping motor during the feeding process, and the control unit prints the paper by stepping the stepping motor and stepping the motor once. The moving distance can calculate the paper feeding distance of the printing paper; when the motor of the conveying unit is a DC motor, the second counter is used to record the time of feeding the paper, and control The unit can calculate the paper feed distance of the paper by the paper feed time and the moving distance of the paper in the unit time.

In S380, the printing paper is driven to feed a predetermined distance, and the count value of the second counter is incremented by one.

The control unit controls the transport unit to drive the paper feed a predetermined distance and increments the count value of the second counter by one.

In S390, it is determined whether the second sensor is in a paper state.

The control unit detects the state of the second sensor, determines whether the second sensor is in the paper state, and when it is determined that the second sensor is in the paper state, step S420 is performed; and when it is determined that the second sensor is in the paperless state, step S400 is performed.

In S400, it is determined whether the count value of the second counter is equal to the second pre-designed value.

Comparing the count value of the second counter with the second pre-designed value C2, determining whether the count value of the second counter is equal to the second pre-design value C2, and when the count value of the second counter is equal to the second pre-design value C2, performing Step S410, when the count value of the second counter is not equal to the second pre-design value C2, proceed to step S380. Wherein, the second pre-designed value C2 is pre-stored in the storage unit and is calculated in advance according to the maximum allowable paper feed length.

In S410, a paper jam alarm is issued.

When the count value of the first counter is equal to the first pre-designed value C1, the second sensor is still in the paper state, or when the count value of the second counter is equal to the second pre-design value C2, the second sensor is still paperless, control The unit control determines that the printer has a paper jam error, and the control unit controls the pointing unit to perform a paper jam alarm.

In S420, the printing paper is moved to a preset length, and the printing start position of the printing paper is conveyed to the printing position of the printing head.

When the second sensor changes from the paper state to the paperless state before the count value of the first counter is equal to the first pre-designed value C1, or when the second sensor is equal to the second pre-design value C2 before the count value of the second counter is equal to the second pre-designed value C2 The controller determines that the paper head of the printing paper reaches the detecting position of the second sensor, and the control unit controls the conveying unit to drive the printing paper to move the preset length to print the printing start position of the printing paper. The print position delivered to the printhead.

In the control method of the printer in this embodiment, the printer counts by the first counter during the paper ejection process, and counts by the second counter during the paper feeding process, when the count value of the first counter is equal to the first pre-designed value C1. Or if the state of the second sensor is not changed when the count value of the second counter is equal to the second preset value C2, it is determined that the printer has a paper jam error and an alarm is issued. Pass The printer of the embodiment and the control method of the printer can avoid the printer damage caused by the continuous rotation of the motor when a paper jam occurs in the printer.

The technical principles of the present disclosure have been described above in connection with the alternative embodiments, and the description is only for the purpose of explaining the principles of the present disclosure, and is not to be construed as limiting the scope of the disclosure. Based on the explanation herein, those skilled in the art can associate other alternative embodiments of the present disclosure without departing from the scope of the present disclosure.

Industrial applicability

Claims

A control method of a printer, the printer comprising a first sensor (151), a print head (131), and a second sensor (152), wherein the first sensor (151), the print head (131), and The second sensor (152) is sequentially disposed in the feeding path (23) of the printer along the paper feeding direction of the printing paper, and the control method includes:

Detecting whether the first sensor (151) is in a paper state;

Detecting whether the second sensor (152) is in a paper state when the first sensor (151) is in a paper state;

When the second sensor (152) is in a paper state, controlling the paper to be ejected, so that the paper head of the printing paper reaches the detection position of the second sensor (152);

When the second sensor (152) is in a paperless state, the printing paper is controlled to feed so that the paper head of the printing paper reaches the detection position of the second sensor (152).
The control method according to claim 1, wherein when the paper head of the printing paper reaches the detection position of the second sensor (152), the printing paper is driven to move a preset length to print the printing paper The starting position is delivered to the printing position of the printhead (131).
The control method according to claim 1, wherein said printer further comprises an upper cover (20) and a base (21), said upper cover (20) being openable or closable relative to said base (21), When the upper cover (20) is closed relative to the base (21), the upper cover (20) and the base (21) form the transport channel (23);

When the first sensor (151) is in a paper state, detecting whether the second sensor (152) is in a paper state includes:

Detecting whether the upper cover (20) is in a closed state; when the upper cover (20) is in a closed state, detecting whether the second sensor (152) is in a paper state.
The control method according to claim 1, wherein said paper is ejected when said second sensor (152) is in a paper state, and said paper head of said printing paper reaches said second sensor The detection locations of (152) include:

The printing paper detects a state of the second sensor (152) every time a predetermined distance is ejected, and when detecting that the second sensor (152) is in a paperless state, determining that the paper head of the printing paper arrives The detection position of the second sensor (152).
The control method according to claim 4, wherein in the controlling the paper ejection process, the method further comprises:

Counting the paper ejection distance of the printing paper using a first counter, each of the printing papers The preset value of the first counter is incremented by one, and when the count value of the first counter is equal to the first pre-designed value, the second sensor (152) is not detected to be paperless. , a paper jam alarm.
The control method according to claim 1, wherein said controlling said paper feed is performed when said second sensor (152) is in a paperless state, so that a paper head of said printing paper reaches said second sensor The detection locations of (152) include:

The printing paper detects a state of the second sensor (152) every time a predetermined distance is fed, and when detecting that the second sensor (152) is in a paper state, determining that the paper head of the printing paper arrives The detection position of the second sensor (152).
The control method according to claim 6, wherein in controlling the paper feeding process, the method further comprises:

Counting a paper feed distance of the printing paper by using a second counter, the printing paper adding a count value of the second counter every time a paper is fed a predetermined distance, when the count value of the second counter is equal to When the second pre-designed value has not detected that the second sensor (152) is in a paper state, a paper jam alarm is issued.
A printer comprising: a transport channel (23), a print head (131), a transport unit (14), a first sensor (151), a second sensor (152), and a control unit (10);

The print head (131) for performing printing on the printing paper;

The conveying unit (14) is configured to drive the printing paper to move in the conveying passage (23);

The first sensor (151), the print head (131) and the second sensor (152) are sequentially disposed in the paper feed direction of the printer in the transport channel (23) of the printer;

The control unit (10) is configured to detect whether the first sensor (151) is in a paper state, and when detecting that the first sensor (151) is in a paper state, detecting the second sensor (152) Whether it is a paper-like state, when detecting that the second sensor (152) is in a paper state, controlling the conveying unit (14) to drive the printing paper to eject, so that the paper head of the printing paper reaches the paper a detecting position of the second sensor (152); when detecting that the second sensor (152) is in a paperless state, controlling the conveying unit (14) to drive the printing paper to feed the paper head of the printing paper A detection position of the second sensor (152) is reached.
The printer according to claim 8, wherein said control unit (10) is further configured to control said conveying unit (14) when a paper head of said printing paper reaches a detection position of said second sensor (152) Driving the printing paper to move a preset length, and conveying the printing starting position of the printing paper to the The print position of the print head (131).
The printer according to claim 8, further comprising an upper cover (20), a base (21) and a third sensor (153);

The upper cover (20) can be opened or closed relative to the base (21), and when the upper cover (20) is closed relative to the base (21), the upper cover (20) The conveying passage (23) is formed between the bases (21), and the third sensor (153) is configured to output a signal indicating that the upper cover (20) is in an open state or a closed state;

The control unit (10) is further configured to detect the upper cover (20) by detecting a signal output by the third sensor (153) when detecting that the first sensor (151) is in a paper state. Whether it is in a closed state, when it is detected that the upper cover (20) is in a closed state, it is detected whether the second sensor (152) is in a paper state.
The printer according to claim 8, wherein said control unit (10) is configured to cause said paper head of said printing paper to arrive at said paper when said second sensor (152) is detected to be in a paper state Detection position of the second sensor (152):

The control unit (10) detects the state of the second sensor (152) every time the control unit (14) controls the printing unit to drive the paper to eject a predetermined distance, when the second sensor is detected ( 152) When the paper is in a paperless state, it is determined that the paper head of the printing paper reaches the detection position of the second sensor (152).
A printer according to claim 11, further comprising an indication unit (16) for indicating a status of said printer;

The control unit (10) is further configured to count the paper ejection distance of the printing paper by using a first counter, and the control unit (10) controls the conveying unit (14) to drive the printing paper to eject one paper. When the preset distance is set, the count value of the first counter is incremented by 1. When the count value of the first counter is equal to the first pre-designed value, if the second sensor (152) has not been detected as being paperless, The indication unit (16) is controlled to perform a paper jam alarm.
The printer according to claim 8, wherein said control unit (10) is configured to cause said paper head of said printing paper to arrive at said paper when said second sensor (152) is detected to be in a paperless state Detection position of the second sensor (152):

The control unit (10) detects a state of the second sensor (152) every time the control unit (14) controls the printing unit to drive the printing paper to a predetermined distance, when the second sensor is detected ( 152) When the paper is in the paper state, it is determined that the paper head of the printing paper reaches the detection position of the second sensor (152).
The printer of claim 13 further comprising an indication unit (16) for indicating State the state of the printer;

The control unit (10) is further configured to count the paper feeding distance of the printing paper by using a second counter, and the control unit (10) controls the conveying unit (14) to drive the printing paper to feed one paper. When the preset distance is set, the count value of the second counter is incremented by 1. When the count value of the second counter is equal to the second pre-designed value, if the second sensor (152) is not detected to be in a paper state, The indication unit (16) is controlled to perform a paper jam alarm.