WO2021027764A1

WO2021027764A1 - Printer and paper conveying method

Info

Publication number: WO2021027764A1
Application number: PCT/CN2020/108135
Authority: WO
Inventors: 张大伟; 汤晓杰; 韩志浩; 李壮; 张艺萌
Original assignee: 山东新北洋信息技术股份有限公司
Priority date: 2019-08-12
Filing date: 2020-08-10
Publication date: 2021-02-18
Also published as: CN112390050A

Abstract

A printer (010) and a paper (020) conveying method. A state detection mechanism (600) for detecting a conveying state of the paper (020) is provided at an entrance of a printing channel (500), so that in abnormal situations such as a situation where the paper (020) is stretched or accumulated between a first paper feeding channel (200) and the printing channel (500) because of the transmission difference between a printing conveying mechanism (510) and a first conveying mechanism (230), the abnormal state of the paper (020) can be changed by adjusting the conveying speed of the first conveying mechanism (230) of the first paper feeding channel (200), thereby ensuring normal conveying of the paper (020), solving the problem that abnormal conveying of the paper (020) affects the printing effect of the printer (010), and improving the reliability of the operation of the printer (010).

Description

Printer and paper conveying method

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office with application number 201910739213.9 on August 12, 2019. The entire content of the above application is incorporated into this application by reference.

Technical field

This application relates to the field of printing technology, for example, to a printer and a paper conveying method.

Background technique

A printer usually includes a paper supply channel and a printing channel. Along the advancing direction of the printing paper, the paper supply channel is located upstream of the printing channel. The paper supply channel is provided with a paper feeding mechanism, and the printing channel is provided with a printing mechanism and a paper feeding mechanism. The printing paper in the paper feeding channel is driven to advance and the printing paper is fed into the printing channel, and the printing conveying mechanism drives the printing paper to advance in the printing channel so that the printing head in the printing channel completes printing on the printing paper.

However, due to the problem of abnormal paper feeding during the use of the printer, the abnormal paper feeding may affect the printing effect of the printer or cause paper jam or even tearing of the paper, thereby reducing the reliability of the printer.

Summary of the invention

This application provides a printer and a paper conveying method.

A printer includes a first paper feeding channel, a first conveying mechanism, a printing channel, a printing conveying mechanism, and a control device. The first paper feeding channel is located upstream of the printing channel along the advancing direction of the paper during printing. The conveying mechanism is configured to convey the first paper in the first paper supply channel to the printing channel, and the printing and conveying mechanism is configured to convey the paper in the printing channel. The entrance of the printing channel is provided with a state detection mechanism for detecting the conveying state of the paper. The conveying mechanism, the printing conveying mechanism, and the status detection mechanism are all electrically connected to the control device, and the control device is set to:

Controlling the first conveying mechanism to convey the first paper in the first paper supply channel to the printing channel at a first speed;

According to the signal output by the state detection mechanism, judge whether the paper conveying abnormality occurs;

In the case where it is determined that the paper conveying abnormality occurs, the speed at which the first conveying mechanism conveys the first paper is adjusted to eliminate the paper conveying abnormality.

The present application also provides a paper conveying method applied to a printer. The printer includes a first paper feeding channel, a first conveying mechanism, a printing channel, and a printing conveying mechanism. The first paper feeding channel is located in the forward direction of the paper during printing. Upstream of the printing channel, and the first conveying mechanism is configured to convey the first paper in the first paper supply channel to the printing channel, the printing conveying mechanism is configured to convey the paper in the printing channel, and the entrance of the printing channel is provided for detecting paper conveying The state detection mechanism and paper conveying method include:

In the case where it is determined that the paper conveying abnormality occurs, the speed of the first paper conveying mechanism is adjusted to eliminate the paper conveying abnormality.

Description of the drawings

FIG. 1 is a schematic structural diagram of a printer in an embodiment of the application;

2 is a block diagram of the composition of a printer in an embodiment of the application;

Figure 3 is an enlarged view of part III in Figure 1;

Figure 4 is a schematic diagram of a state detection mechanism in another embodiment of the application;

Fig. 5 is a flowchart of a paper conveying method in an embodiment of the application.

icon:

010-printer; 100-first paper feeding mechanism; 200-first paper feeding channel; 210-first paper feed sensor; 220-first inspection sensor; 230-first conveying mechanism; 232-first motor; 234- The first conveying roller assembly; 300-the second paper feeding mechanism; 400-the second paper feeding channel; 410-the second paper feeding sensor; 420-the second inspection sensor; 430-the second conveying mechanism; 432-the second motor; 434-second conveying roller assembly; 500-printing channel; 510-printing conveying mechanism; 511-printing roller; 512-third motor; 520-printing head; 600-state detection mechanism; 610-base; 620-first Trigger; 621-first flap; 630-first state sensor; 640-first elastic member; 650-second trigger; 651-second flap; 660-second state sensor; 670-second elastic Pieces; 680-fixed board; 700-control device; 020-paper.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various different configurations.

It should be noted that similar reference numerals and letters indicate similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

In the description of this application, it should also be noted that the terms "set", "installation", "connected", and "connected" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they may be fixed connections. It can also be detachably connected or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood under specific circumstances.

The printer usually uses the upstream paper supply channel and the downstream printing channel to transport the paper. When the paper is transported between the paper supply channel and the printing channel, the front and rear ends of the paper will be transported in the two channels respectively. Driven by the mechanism and move in the downstream direction. In some cases (especially when multiple paper feeding channels correspond to the same printing channel), the conveying mechanism of the paper feeding channel and the conveying mechanism of the printing channel have transmission errors, and the conveying speed of the paper feeding channel and the printing channel may be inconsistent. When the transmission error accumulates, the front and rear ends of the paper will be stretched and over-tensioned when conveying in the two channels at the same time (that is, the paper is abnormal), or the paper stacking situation ( That is, the pile of paper is abnormal). When the paper draws abnormally, it will affect the printing effect, and in severe cases it may cause the paper to tear; when the pile of paper is abnormal, it will cause the paper to arch, fold or pile up between the paper feeding channel and the printing channel, which will affect printing. Effect, in severe cases, paper jams may occur.

The application provides a printer and a paper conveying method suitable for the printer. FIG. 1 is a schematic diagram of the structure of a printer in an embodiment of the application; FIG. 2 is a block diagram of the printer in an embodiment of the application. 1 and 2, this embodiment provides a dual-channel paper supply printer 010, including a first paper supply mechanism 100, a first paper supply channel 200, a first conveying mechanism 230, a second paper supply mechanism 300, The second paper feeding channel 400, the second conveying mechanism 430, the printing channel 500, the printing conveying mechanism 510, the state detecting mechanism 600, and the control device 700. Wherein, along the paper feeding direction during printing, the first paper feeding mechanism 100 is located upstream of the first paper feeding channel 200 and is configured to feed paper to the first paper feeding channel 200, and the second paper feeding mechanism 300 is located at the second feeding path. The upstream of the paper passage 400 is configured to feed paper to the second paper supply passage 400. The downstream end of the first paper feeding channel 200 and the downstream end of the second paper feeding channel 400 merge before the entrance of the printing channel 500, and the paper 020 output from the first paper feeding channel 200 and the second paper feeding channel 400 can enter The printing channel 500 is further conveyed in the printing channel 500 under the action of the printing conveying mechanism 510, so that the printing head 520 of the printer 010 completes printing on the paper 020. When one of the first paper feeding mechanism 100 or the second paper feeding mechanism 300 cannot feed paper because there is no paper or is unable to feed paper due to a fault, the other paper feeding mechanism can be used to supply paper 020, which reduces the printer 010 being out of paper or The time of downtime caused by faults improves printing efficiency.

The first conveying mechanism 230 is configured to drive the paper 020 to be conveyed in the first paper feeding channel 200. FIG. 3 is an enlarged view of part III in FIG. 1. As shown in FIG. 3, in this embodiment, the first paper supply channel 200 is a slit channel, which can pass sheet media such as paper 020. The first paper supply channel 200 has an inlet located upstream and an outlet located downstream. The front end of the paper 020 enters the first paper supply channel 200 from the entrance of the first paper supply channel 200, and is driven by the first conveying mechanism 230. The exit of the first paper supply channel 200 extends and enters the printing channel 500. In addition, under the continuous driving of the first conveying mechanism 230, the paper 020 can continue to advance in the first paper supply channel 200 to achieve continuous paper supply to the printing channel 500.

The first conveying mechanism 230 includes a first motor 232 and a first conveying roller assembly 234 arranged in the first paper feeding channel 200. The first conveying roller assembly 234 includes a driving roller and a driven roller for clamping the paper 020. The motor 232 is in transmission connection with the driving roller. When the output shaft of the first motor 232 rotates, the driving roller of the first conveying roller assembly 234 is driven to rotate. When the driving roller of the first conveying roller assembly 234 rotates, the driven roller of the driving roller rotates with the driving roller. , So that the paper 020 between the driving roller and the driven roller is transported in the first paper feeding path 200. Among them, the rotation speed of the driving roller and the driven roller of the first conveying roller assembly 234 determines the conveying speed of the paper 020 in the first paper supply channel 200. In other embodiments, the first conveying mechanism 230 may further include a plurality of conveying roller assemblies arranged in the first paper feeding channel 200 at intervals in sequence. Optionally, the first conveying roller assembly 234 is a conveying roller assembly closest to the entrance of the first paper supply channel 200 among the plurality of conveying roller assemblies.

A first paper feed sensor 210 is provided at the entrance of the first paper feed channel 200, and the first paper feed sensor 210 is configured to detect whether there is paper at the entrance of the first paper feed channel 200 to determine whether to start loading paper, that is, The first conveying mechanism 230 conveys the paper 020 into the first paper feeding passage 200. A first inspection sensor 220 is also provided in the first paper supply path 200. The first inspection sensor 220 is configured to detect whether there is paper in the first paper supply path 200, so that when there is no paper 020 in the first paper supply path 200, The paper 020 is conveyed by the second paper supply path 400.

Along the advancing direction of the paper 020 in the first paper feeding channel 200 during printing, the first paper feed sensor 210 is located upstream of the first conveying roller assembly 234, and the first inspection sensor 220 is located downstream of the first conveying roller assembly 234. Both the paper input sensor 210 and the first inspection sensor 220 may be implemented by photoelectric sensors. When there is paper at the location of the photoelectric sensor and when there is no paper, the photoelectric sensor outputs different signals to indicate whether there is paper 020 at the location of the photoelectric sensor.

Similar to the first paper feed channel 200, the second paper feed channel 400 of the embodiment of the present application is provided with a second paper feed sensor 410 and a second check sensor 420. The arrangement and working principle of the second paper feed sensor 410 are the same as those of the first paper feed sensor 410. The paper feed sensor 210 is the same, and the second inspection sensor 420 has the same arrangement and working principle as the first inspection sensor 220; the second conveying mechanism 430 includes a second conveying roller assembly 434 arranged in the second paper feeding channel 400 and The second motor 432 that drives the conveying roller of the second conveying roller assembly 434 to rotate, and the setting mode and working principle of the second conveying mechanism 430 are also the same as those of the first conveying mechanism 230, so please refer to the foregoing introduction, and will not be repeated here. It should be noted that, in other embodiments of the present application, the printer 010 may also be a single-channel printer 010, or have more paper supply channels. In other words, the second paper feeding mechanism 300, the second paper feeding channel 400, and the corresponding conveying mechanism and sensors can all be omitted, or additional paper feeding channels and corresponding conveying mechanisms, sensors, etc. may be further added.

The printing transport mechanism 510 is configured to drive the paper 020 to move in the printing channel 500. The printing transport mechanism 510 includes a printing roller 511 and a third motor 512 that drives the printing roller 511 to rotate. The printing roller 511 is arranged in the printing channel 500, and the printer 010 also includes a printing head 520 opposite to the printing roller 511. The paper 020 passes between the printing head 520 and the printing roller 511, and the printing roller 511 is driven by the third motor 512. When connected, the printing roller 511 rotates with the third motor 512 when the third motor 512 rotates, thereby driving the paper 020 to move in the printing channel 500. In this embodiment, the printer 010 is a thermal printer, the print head 520 of the printing transport mechanism 510 is a thermal print head, and the thermal print head is opposite to the printing roller 511. In other embodiments, the printer 010 may also be a thermal transfer For printers, dot matrix printers, inkjet printers, laser printers, etc., the printing and conveying mechanism 510 may also include relatively disposed conveying rollers. This application does not limit the specific type of the printer 010 and the specific form of the printing and conveying mechanism 510.

In this embodiment, along the advancing direction of the paper 020 during printing, the state detection mechanism 600 is located between the exit of the paper supply channel and the entrance of the printing channel 500. As shown in the figure, the state detection mechanism 600 is arranged near the entrance of the printing channel 500 and is configured to detect that the paper 020 delivered from the exit of the paper supply channel (for example, the first paper supply channel 200 or the second paper supply channel 400) Before entering the printing channel 500, whether a conveying abnormality occurs. As shown in FIG. 3, the outlets of the first paper supply channel 200 and the second paper supply channel 400 are downward or diagonally downward, and the entrance of the printing channel 500 is also diagonally downward, so that the front and rear ends of the paper 020 are respectively located in the paper supply channel. When it is in the printing channel 500, the part of the paper 020 between the paper supply channel and the printing channel 500 is in a concave state. The state detection mechanism 600 is located above the concave portion of the paper 020. The state detection mechanism 600 includes a first trigger 620 movably arranged on the base 610 and a first state sensor 630 fixedly arranged on the base 610. The base 610 is opposite to The printing channel 500 is fixed. When the paper 020 is stretched due to abnormality, the concave part of the paper 020 will lift up, thereby pushing the first trigger 620 to move, so that the first trigger 620 cooperates with the first state sensor 630. The status sensor 630 outputs a paper pulling signal, so that the abnormal paper pulling can be detected. As shown in FIG. 3, the state detection mechanism 600 also includes a first flap 621 rotatably connected to the base 610, and the first trigger 620 is fixedly connected to the first flap 621. The paper 020 pushes the first flap 621 to rotate in a clockwise direction. When the first flap 621 rotates, the first trigger 620 rotates, so that the first trigger 620 cooperates with the first state sensor 630, and the paper 020 is pulled After the abnormality is eliminated, the first flap 621 rotates counterclockwise under the action of gravity. When the first flap 621 rotates, the first trigger 620 rotates, thereby separating the first trigger 620 from the first status sensor 630 . In the two cases where the first trigger 620 and the first state sensor 630 are matched and separated, the first state sensor 630 outputs different signals. Among them, when the first trigger 620 is matched with the first state sensor 630, The first state sensor 630 outputs a paper pulling signal, and when the first trigger 620 is separated from the first state sensor 630, the first state sensor 630 outputs a signal that the paper conveying returns to normal.

The state detection mechanism 600 of the embodiment shown in FIG. 3 can detect the abnormality of the drawing paper, so that the printer 010 can eliminate the abnormality of the drawing paper in time to avoid affecting the printing effect or the occurrence of paper tearing.

FIG. 4 is a schematic diagram of a state detection mechanism 600 in another embodiment of the application. As shown in FIG. 4, in another embodiment of the present application, the state detection mechanism 600 can be used to detect abnormalities in paper stacking, in addition to detecting abnormalities in paper pulling. As shown in FIG. 4, in this embodiment, the state detection mechanism 600 includes a first trigger 620 and a second trigger 650 movably connected to the base 610, and a first state sensor 630 and a second trigger fixed relative to the base 610. The second state sensor 660, in which, in the case of abnormal paper leaching of the paper 020, the first trigger 620 cooperates with the first state sensor 630, and the first state sensor 630 outputs a paper leaching signal, and an abnormal paper piling occurs in the paper 020 Next, the second trigger 650 cooperates with the second status sensor 660, and the second status sensor 660 outputs a stacking signal.

As shown in FIG. 4, the state detection mechanism 600 further includes a fixed plate 680, a first flap 621 and a second flap 651. The fixing plate 680 is S-shaped, and the fixing plate 680 has an upper convex portion and a lower concave portion. The first flap 621 is located below the upper convex part of the fixing plate 680, and the first flap 621 has an upper convex upper surface corresponding to the shape of the upper convex part of the fixing plate 680. One end of the first flap 621 is rotatably connected to the base 610, and the first trigger 620 is disposed at the other end of the first flap 621. When the first trigger 620 rotates with the rotation of the first flap 621, Cooperate with the first state sensor 630. The second turning plate 651 is located below the concave portion of the fixing plate 680, and the second turning plate 651 has a concave upper surface corresponding to the shape of the concave portion of the fixing plate 680. One end of the second flap 651 is rotatably connected to the base 610, and the second trigger 650 is arranged at the other end of the second flap 651. When the second trigger 650 rotates with the rotation of the second flap 651, Cooperate with the second state sensor 660.

As shown in FIG. 4, the upper surface of the first flap 621 and the second flap 651 and the lower surface of the fixing plate 680 form a passage for the paper 020 to pass, and when there is no abnormal conveyance of the paper 020, the passage is It is S-shaped, so when the paper 020 passes through the channel, it is also forced to move in an S-shape to the printing channel 500 (not shown in FIG. 4), that is, the paper 020 is convex upward above the first flap 621 , Above the second flap 651 is a concave shape. When an abnormality occurs, the paper 020 is stretched, and the convex and concave parts of the paper 020 tend to be flattened. The paper 020 pushes the first flap 621 to rotate, so that the first trigger 620 cooperates with the first status sensor 630. At this time, the first status sensor 630 outputs a paper-struck signal, and the abnormal paper-struck can be detected. In the whole process, the second flap 651 will not receive external force and will not rotate. Therefore, the second trigger 650 will not cooperate with the second state sensor 660. Similarly, when an abnormal pile of paper occurs, the paper 020 is piled up in the concave part of the S-shaped channel, and the piled paper 020 pushes the second flap 651 to rotate, thereby causing the second trigger 650 to cooperate with the second state sensor 660. When the second state sensor 660 outputs a stacking signal, the stacking abnormality can be detected. During the whole process, the first flap 621 will not receive external force and will not rotate. Therefore, the first trigger 620 will not cooperate with the first state sensor 630.

In order to enable the first flap 621 and the second flap 651 to be reset after the paper conveying returns to normal, so as to avoid affecting the normal conveying of the subsequent paper 020. The first flap 621 is connected to the base 610 through the first elastic member 640. The first elastic member 640 provides the first flap 621 with a restoring force. The flap 621 overcomes the elastic force of the first elastic member 640 and rotates in a clockwise direction from the initial position of the first flap 621. After the abnormal paper pull is eliminated, the first flap 621 is acted by the reset force of the first elastic member 640. The 621 rotates counterclockwise to return to the initial position of the first flap 621, the first trigger 620 is separated from the first state sensor 630, and the first state sensor 630 outputs a signal that the paper conveying returns to normal. The second flap 651 is connected to the base 610 through the second elastic member 670. The second elastic member 670 provides the second flap 651 with a restoring force. In the case of abnormal stacking, the second flap is pushed by the paper 020. The flap 651 overcomes the elastic force of the second elastic member 670 and rotates counterclockwise from the initial position of the second flap 651. After the abnormality of the stack of paper is eliminated, the second flap is under the action of the restoring force of the second elastic member 670. The 651 rotates in a clockwise direction and returns to the initial position of the second flap 651, the second trigger 650 is separated from the second state sensor 660, and the second state sensor 660 outputs a signal that the paper conveying returns to normal. As shown in FIG. 4, the first elastic member 640 and the second elastic member 670 may be springs. In this embodiment, the first state sensor 630 and the second state sensor 660 may be photoelectric sensors or proximity switches.

The control device 700 interacts with the first motor 232 of the first conveying mechanism 230, the second motor 432 of the second conveying mechanism 430, the first state sensor 630, the second state sensor 660, the first paper feed sensor 210, and the second paper feed respectively. The sensor 410, the first inspection sensor 220, the second inspection sensor 420, and the third motor 512 of the printing conveying mechanism 510 are electrically connected, and the control device 700 is configured to control the first conveying mechanism 230 to convey the first conveying mechanism to the printing channel 500 at a first speed. The first paper in a paper supply channel 200 is detected by the state detection mechanism 600 to detect whether a paper transport abnormality occurs. In the case of detecting a paper transport abnormality, the first paper transport speed of the first transport mechanism 230 is adjusted to remove the paper. Abnormal delivery.

With the printer 010 provided in this embodiment, when the printer 010 causes abnormal paper transport due to the difference between the upstream and downstream transmissions, the abnormal paper transport can be detected in time, and the first transport mechanism 230 of the first paper supply channel 200 can be adjusted. The conveying speed changes the abnormal state of the paper 020, thereby ensuring the normal conveying of the paper 020, improving the problems of paper jam, paper tearing or affecting the printing effect of the printer 010 due to abnormal paper conveying, and improving the reliability of the printer 010.

The control device 700 is configured to increase the speed of conveying the first paper by the first conveying mechanism 230 from the first speed to the second speed when it is determined that an abnormality has occurred according to the paper pulling signal output by the first state sensor 630 to Eliminate the abnormal paper draw. Since the abnormal paper jam is caused by the conveying speed of the first conveying mechanism 230 being lower than the conveying speed of the printing conveying mechanism 510, by increasing the conveying speed of the first paper by the first conveying mechanism 230, the tension of the paper can be relieved , So as to eliminate the abnormality of the paper. The second speed is greater than the conveying speed of the printing conveying mechanism 510. Optionally, the second speed can be set to 1.2 times, 1.5 times, twice the first speed, etc. Optionally, the first speed is equal to the conveying speed of the printing and conveying mechanism 510, and the second speed can be set to 1.2 times, 1.5 times, twice, etc., of the conveying speed of the printing and conveying mechanism 510.

The control device 700 is configured to reduce the speed at which the first conveying mechanism 230 conveys the first paper from the first speed to the third speed when it is determined that a pile abnormality occurs according to the pile signal output by the second state sensor 660, so as Eliminate the abnormal pile of paper. Since the abnormal stacking of paper is caused by the conveying speed of the first conveying mechanism 230 being higher than the conveying speed of the printing conveying mechanism 510, by reducing the conveying speed of the first paper by the first conveying mechanism 230, the stacked state of the paper can be alleviated. So as to eliminate the abnormal pile of paper. The third speed is lower than the conveying speed of the printing conveying mechanism 510. Optionally, the third speed can be set to one-third, one-half, two-thirds, etc. of the first speed. Optionally, the first speed is equal to the conveying speed of the printing and conveying mechanism 510, and the third speed can be set to one-third, one-half, two-thirds, etc., of the conveying speed of the printing and conveying mechanism 510.

The control device 700 is also configured to, after adjusting the speed of the first paper conveying by the first conveying mechanism 230, determine whether the paper conveying is restored to normal according to the signal output by the state detecting mechanism 600, and if the paper conveying is determined to return to normal, the first The speed at which the conveying mechanism feeds the first paper 230 returns to the first speed. Generally, the difference between the conveying speeds of the first conveying mechanism 230 and the printing conveying mechanism 510 is not large, and the accumulation of errors caused by the long-time work of the printer 010 leads to abnormal paper output or abnormal paper stacking. Therefore, compared to the adjusted second speed or third speed, the first speed is still closest to the conveying speed of the printing conveying mechanism 510. If the paper 020 is conveyed at the second speed or the third speed for a long time, it may be counterproductive and cause another kind of paper conveying abnormality. Therefore, after judging that the paper conveying returns to normal according to the signal output by the state detection mechanism 600, the control device 700 restores the first paper conveying speed of the first conveying mechanism 230 to the first speed to avoid causing another abnormal paper conveying. .

The control device 700 is further configured to control the second conveying mechanism 430 to convey the second paper feed to the printing path 500 at the first speed when it is determined that there is no paper in the first paper feed path 200 according to the signal output by the first check sensor 220 The second paper in the channel 400 is determined according to the signal output by the state detection mechanism 600 whether a paper conveying abnormality occurs. In the case of determining that the paper conveying abnormality occurs, the second paper conveying speed of the second conveying mechanism 430 is adjusted to remove the paper Abnormal delivery. The control device 700 of this embodiment can also use a similar control method for the second conveying mechanism 430 to the first conveying mechanism 230 to ensure that the paper is supplied through the second paper supply channel 400 and the paper can be properly maintained. delivery.

The control device 700 is also configured to control the first conveying mechanism 230 to drive the first conveying mechanism 230 when it is determined that the entrance of the first paper feeding channel 200 changes from a paperless state to a paper state according to the signal output by the first paper feed sensor 210. The first paper at the entrance of the paper feeding channel 200 advances, and the front end of the first paper is transported to the loading position of the first paper feeding channel 200, wherein, along the advancing direction of the first paper, the first paper feeding channel 200 is loaded The location is between the first inspection sensor 220 and the first conveying roller assembly 234. With this solution, the paper 020 can be reloaded into the first paper supply channel 200 after the first paper supply mechanism 100 resumes its paper supply capability, so that paper can be fed to the printing channel 500 through the first paper supply channel 200 again.

FIG. 5 is a flowchart of a paper conveying method in an embodiment of this application. The paper conveying method is suitable for the printer 010 provided in the embodiment of this application. As shown in FIG. 5, the paper conveying method of the embodiment of the present application includes:

Step S100, controlling the first conveying mechanism to convey the first paper in the first paper supply channel to the printing channel at a first speed.

Taking the printer 010 provided in the embodiment of the present application as an example, the first paper is the paper 020 provided by the first paper feeding mechanism 100 and conveyed in the first paper feeding channel 200 by the first conveying mechanism 230. The control device 700 controls the first motor 232 of the first conveying mechanism 230 to rotate at a preset speed, so that the conveying roller assembly of the first conveying mechanism 230 drives the first paper to be conveyed in the first paper feeding channel 200 at the first speed.

In step S200, it is determined whether a paper transport abnormality occurs according to the signal output by the state detection mechanism.

Taking the printer 010 provided in the embodiment of the present application as an example, the state detection mechanism 600 is configured to output an abnormal signal to the control device 700. Abnormalities in paper conveyance include abnormalities in paper picking and abnormalities in stacking. Taking the state detection mechanism 600 provided in the embodiment of FIG. 3 as an example, the state detection mechanism 600 includes a first trigger 620 and a first state sensor 630. The first trigger 620 can Pushed by the stretched and tight paper 020, it rotates relative to the base 610. When the first trigger 620 rotates to a position that matches the first state sensor 630, the first state sensor 630 outputs a paper pull signal, and when the control device 700 receives When the first state sensor 630 outputs the paper pulling signal, it is determined that a paper pulling abnormality has occurred. As shown in FIG. 4, the state detection mechanism 600 may further include a second trigger 650 and a second state sensor 660. The second trigger 650 can be pushed by the stacked paper 020 to rotate relative to the base 610. When the second trigger When the 650 rotates to a position that cooperates with the second state sensor 660, the second state sensor 660 outputs a stacking signal. When the control device 700 receives the stacking signal, it is determined that a stacking abnormality has occurred.

In step S300, when it is determined that an abnormal paper conveyance occurs, the speed at which the first conveying mechanism conveys the first paper is adjusted to eliminate the abnormal paper conveyance.

Taking the printer 010 provided in the embodiment of the present application as an example, after the control device 700 determines that the paper conveying abnormality occurs, it adjusts the speed of conveying the first paper by adjusting the rotation speed of the first motor 232 of the first conveying mechanism 230, thereby eliminating The paper feeds abnormally.

Since the transport speed of the printing transport mechanism 510 is greater than the first transport speed of the first transport mechanism 230, the moving speed of the paper 020 in the printing path 500 is greater than the moving speed of the paper 020 in the first paper supply path 200, The paper 020 at the state detection mechanism 600 will be strained, that is, an abnormality of paper pulling occurs. In the case where it is determined that an abnormality of paper flinching occurs, the control device 700 increases the speed at which the first conveying mechanism 230 conveys the first paper from the first speed to the second speed, so as to eliminate the abnormality of paper flinching. Wherein, the second speed is greater than the conveying speed of the printing and conveying mechanism 510. Optionally, the second speed can be set to 1.2 times, 1.5 times, twice the first speed, etc. Optionally, the first speed is equal to the conveying speed of the printing and conveying mechanism 510, and the second speed can be set to 1.2 times, 1.5 times, twice, etc., of the conveying speed of the printing and conveying mechanism 510. By increasing the speed of the first paper conveyed by the first conveying mechanism 230, the moving speed of the paper 020 in the first paper supply channel 200 can be greater than the moving speed of the paper 020 in the printing channel 500, so as to eliminate the abnormality of paper draw and avoid the occurrence of draw The paper is abnormal, which affects the printing effect or causes the paper to tear.

Since the transport speed of the printing transport mechanism 510 is lower than the first transport speed of the first transport mechanism 230, the moving speed of the paper 020 in the printing path 500 is less than the moving speed of the paper 020 in the first paper supply path 200 , The paper 020 at the state detection mechanism 600 will be piled up, that is, a piled paper abnormality occurs. When the control device 700 determines that the stacking abnormality occurs, the speed at which the first transport mechanism 230 transports the first paper is reduced from the first speed to the third speed to eliminate the stacking abnormality. Wherein, the third speed is lower than the conveying speed of the printing and conveying mechanism 510. Optionally, the third speed can be set to one-third, one-half, two-thirds, etc. of the first speed. Optionally, the first speed is equal to the conveying speed of the printing and conveying mechanism 510, and the third speed can be set to one-third, one-half, two-thirds, etc., of the conveying speed of the printing and conveying mechanism 510. By reducing the speed at which the first paper is conveyed by the first conveying mechanism 230, the moving speed of the paper 020 in the first paper supply channel 200 can be lower than the moving speed of the paper 020 in the printing channel 500, so as to eliminate abnormal paper stacking and avoid the occurrence of stacking. Abnormal paper affects the printing effect or causes paper jam.

The paper conveying method of the embodiment of the present application may further include: after adjusting the speed at which the first conveying mechanism 230 conveys the first paper, judging whether the conveying of the paper 020 is restored to normal according to the signal output by the state detecting mechanism 600, and determining whether the conveying of the paper 020 is restored to normal In the case, the speed of the first paper conveyed by the first conveying mechanism 230 is restored to the first speed.

When an abnormal paper conveying occurs, the conveying speed of the first conveying mechanism 230 is adjusted to the second speed or the third speed to quickly eliminate the mismatch between the upstream and downstream conveying speeds of the paper 020 in the conveying direction of the paper 020 The paper is conveyed abnormally. Normally, the difference between the conveying speeds of the first conveying mechanism 230 and the printing conveying mechanism 510 is not large. The accumulation of errors caused by the printer 010 working for a long time leads to abnormal paper picking or abnormal paper stacking. Therefore, compared to the adjusted second speed or third speed, the first speed is still closest to the conveying speed of the printing conveying mechanism 510. If the paper 020 is transported at the second speed or the third speed for a long time, it may be counterproductive and cause another abnormal paper transport. For example, after the occurrence of an abnormal paper draw, the conveying speed of the first conveying mechanism 230 is increased to the second speed to eliminate the abnormal paper draw. However, because the second speed is too fast, the paper 020 is transported at the second speed for a long time, which may cause piles. Paper abnormality occurs; vice versa. Although the paper is transported at the third speed 020 for a long time, it can rule out the abnormal paper stacking, but it may cause abnormal paper output. Therefore, after the control device 700 adjusts the conveying speed of the first conveying mechanism, it continues to monitor the signal output by the state detection mechanism 600. After determining that the paper conveyance has returned to normal based on the signal output by the state detection mechanism, the control device 700 sets the first conveying mechanism 230 The speed of conveying the first paper is restored to the first speed to avoid the occurrence of another abnormal paper conveying.

The paper conveying method of the embodiment of the present application may further include: in a case where it is determined that there is no paper in the first paper feeding channel 200 according to the signal output by the first check sensor 220, controlling the second conveying mechanism 430 to the printing channel 500 at the first speed. Transport the second paper in the second paper supply channel 400; determine whether a paper transport abnormality occurs according to the signal output by the state detection mechanism 600; if an abnormal paper transport is detected, adjust the second transport mechanism 430 to transport the second paper Speed to rule out abnormal paper feeding.

The second paper is the paper 020 provided by the second paper feeding mechanism 300 and conveyed in the second paper feeding channel 400 by the second conveying mechanism 430. In a print job, when the control device 700 detects that there is no paper 020 in the first paper feeding path 200 according to the signal output by the first check sensor 220, it controls the second conveying mechanism 430 to convey the second paper to pass through the second paper feeding path 400 Paper is supplied to the printing channel 500, so that the printer 010 continues to print, so as to avoid affecting the printing job due to the paper 020 provided by the first paper supply mechanism 100 being exhausted. At the same time, the control device 700 still detects the signal output by the state detection mechanism 600 in real time to monitor the paper conveying situation in real time. When the control device 700 determines that the paper conveying abnormality occurs according to the signal output by the state detection mechanism 600, it adjusts the second conveying mechanism 430 The speed of feeding the second paper is used to rule out abnormal paper feeding. For the specific method steps of adjusting the speed of conveying the second paper by the second conveying mechanism 430 to eliminate the abnormal paper conveying, refer to the method of adjusting the conveying speed of the first conveying mechanism 230 in step S300 to eliminate the abnormal paper conveying. No longer.

The paper conveying method of the embodiment of the present application may further include: controlling the first conveying mechanism when it is determined according to the signal output by the first paper feed sensor 210 that the entrance of the first paper feed channel 200 changes from a paperless state to a paper state 230 drives the first paper at the entrance of the first paper supply passage 200 to advance, and transports the front end of the first paper to the loading position of the first paper supply passage 200, wherein, along the advancing direction of the first paper, the first paper The loading position of the paper path 200 is located between the first inspection sensor 220 and the first conveying roller assembly 234.

Through this step, the paper 020 can be reloaded into the first paper supply channel 200 after the first paper supply mechanism 100 resumes the paper supply capability, so that paper can be fed to the printing channel 500 through the first paper supply channel 200 again. When the control device 700 determines that the entrance of the first paper supply channel 200 changes from a paperless state to a paper state, it drives the first paper forward, and when it is determined that the front end of the first paper reaches the first paper according to the signal output by the first inspection sensor 220 When the detection position of the sensor 220 is checked, the first paper is driven to retreat a set distance, so that the front end of the first paper is located at the loading position of the first paper feeding channel 200, thereby completing the accurate loading of the paper 020. Therefore, through this step, the paper in the first paper feeding mechanism 100 can be installed and replaced while the second paper feeding channel 400 is feeding paper to the printing channel 500. After the replacement is completed, the front end of the paper will be driven to the loading position of the first paper feeding channel 200, so that the second paper feeding channel 400 stops feeding paper to the printing channel 500, such as the second paper provided by the second paper feeding mechanism 300 When it is used up, paper is fed to the printing channel 500 through the first paper feeding channel 200 again. In this way, the two paper supply channels can alternately supply paper to the printing channel 500, so as to avoid that the paper 020 provided by one paper supply mechanism is used up and affect the printing job, which is beneficial to improve the printing efficiency of the printer 010. At the same time, when the paper 020 provided by one paper feeding mechanism has not been used up, the front end of the paper 020 provided by another paper feeding mechanism is transported to the loading position of the corresponding paper feeding channel, which can be used for printing to the printing channel 500. Prepare the paper supply, which is beneficial to the better connection of alternate paper supply between the two different paper supply channels and improves efficiency. Of course, the second paper supply channel 400 may also have a loading position, and the second paper in the second paper supply channel 400 can be loaded using the same loading method as the first paper supply channel 200. Of course, in other embodiments, the user can also reinstall the paper for each paper supply mechanism after all the papers provided by the multiple paper supply mechanisms of the printer 010 are used up and load paper into the corresponding paper supply channel. In this way, It can prevent the user from installing paper during the peak period of the printer job, and improve the user's work efficiency.

In the printer of the present application, a state detection mechanism is provided at the entrance of the printing channel to detect the conveying state of the paper. Due to the transmission difference between the printing conveying mechanism in the printing channel and the first conveying mechanism in the first paper supply channel, the paper is In the case of abnormalities such as stretching or accumulation between the first paper supply channel and the printing channel, the abnormal state of the paper can be changed by adjusting the conveying speed of the first conveying mechanism of the first paper supply channel to ensure the normal conveying of the paper. The problem that the printing effect of the printer is affected by the abnormal paper feeding is improved, and the reliability of the printer's work is improved.

The paper conveying method of the present application can be implemented by the printer of the present application, so the problem of poor printing effect due to abnormal paper conveying can also be improved, and the reliability of the printer's work can be improved.

Claims

A printer includes a first paper feeding channel, a first conveying mechanism, a printing channel, a printing conveying mechanism, and a control device, wherein the first paper feeding channel is located upstream of the printing channel along the advancing direction of the paper during printing , And the first conveying mechanism is configured to convey the first paper in the first paper supply channel to the printing channel, and the printing and conveying mechanism is configured to convey the paper in the printing channel. The entrance is provided with a state detection mechanism for detecting the paper conveying state, the first conveying mechanism, the printing conveying mechanism, and the state detection mechanism are all electrically connected to the control device, and the control device is configured as:

Controlling the first conveying mechanism to convey the first paper in the first paper supply channel to the printing channel at a first speed;

Judging whether a paper conveying abnormality occurs according to the signal output by the state detection mechanism;

In a case where it is determined that the paper conveying abnormality occurs, the speed at which the first conveying mechanism conveys the first paper is adjusted to eliminate the paper conveying abnormality.
The printer according to claim 1, wherein the abnormal paper conveyance includes an abnormality of a paper jam, the state detection mechanism includes a first state sensor, and in the case of the abnormality of the paper jam, the first state sensor outputs For a paper-free signal, the control device is set to:

In a case where it is determined that the abnormality of the paper is caused according to the paper-pulling signal output by the first state sensor, the speed of conveying the first paper by the first conveying mechanism is increased from the first speed to the second speed , In order to rule out the abnormal paper pulling.
3. The printer according to claim 2, wherein the second speed is greater than the conveying speed of the print conveying mechanism.
3. The printer according to claim 2, wherein the state detection mechanism further comprises a first trigger movably arranged at the entrance of the printing channel, and the first trigger is configured to occur when the abnormal paper draw occurs , The stretched paper is pushed to cooperate with the first state sensor, so that the first state sensor outputs the paper pulling signal.
The printer according to claim 1, wherein the abnormality in the paper conveyance includes an abnormality in a pile of paper, the state detection mechanism includes a second state sensor, and in the case of an abnormality in the pile of paper, the second state sensor outputs Stacking signal, the control device is set to:

In the case where it is determined that the stacking abnormality has occurred according to the stacking signal output by the second state sensor, the speed at which the first conveying mechanism conveys the first paper is reduced from the first speed to the third speed , To rule out the pile of paper abnormalities.
The printer according to claim 5, wherein the third speed is less than the conveying speed of the print conveying mechanism.
The printer according to claim 5, wherein the state detection mechanism further comprises a second trigger movably arranged at the entrance of the printing channel, and the second trigger is configured to occur when the stacking abnormality occurs , Being pushed by the stacked paper to cooperate with the second status sensor, so that the second status sensor outputs the stacking signal.
7. The printer of any one of claims 1-7, wherein the control device is further configured to:

After adjusting the speed at which the first conveying mechanism conveys the first paper, it is determined whether the paper conveying is restored to normal according to the signal output by the state detection mechanism, and when it is determined that the paper conveying is restored to normal, the first conveying The speed at which the mechanism conveys the first paper returns to the first speed.
The printer according to any one of claims 1-7, further comprising a second paper supply channel and a second conveying mechanism, the second conveying mechanism is electrically connected to the control device, and is arranged along the forward direction of the paper during printing. The second paper feeding channel is located upstream of the printing channel, the first paper feeding channel and the second paper feeding channel converge at the entrance of the printing channel, and the second conveying mechanism is configured to The printing channel conveys the second paper in the second paper feeding channel, and the first paper feeding channel is provided with a first inspection sensor for detecting whether there is paper in the first paper feeding channel. The mechanism includes a first conveying roller assembly arranged in the first paper feeding channel, and the first inspection sensor is located downstream of the first conveying roller assembly and is electrically connected to the control device. The control device is also Set as:

In the case where it is determined that there is no paper in the first paper feeding path according to the signal output by the first check sensor, the second conveying mechanism is controlled to convey the second feeding mechanism to the printing path at the first speed. The second paper in the paper path;

Judging whether a paper conveying abnormality occurs according to the signal output by the state detection mechanism;

In a case where it is determined that the paper conveying abnormality occurs, the speed at which the second conveying mechanism conveys the second paper is adjusted to eliminate the paper conveying abnormality.
The printer according to claim 9, wherein a first paper feed sensor for detecting whether there is paper at the entrance of the first paper feed channel is further provided at the entrance of the first paper feed channel, and the first paper feed sensor The paper feed sensor is electrically connected to the control device, and the control device is further configured to:

When it is determined according to the signal output by the first paper feed sensor that the entrance of the first paper feed channel changes from a paperless state to a paper state, the first conveying mechanism is controlled to drive the first paper feeder. The first paper at the entrance of the channel advances, and the front end of the first paper is transported to the loading position of the first paper feeding channel, wherein, along the advancing direction of the first paper, the first paper feeding The loading position of the passage is located between the first inspection sensor and the first conveying roller assembly.
The printer according to claim 4, wherein the portion of the paper between the paper supply channel and the printing channel is in a concave state; the state detection mechanism is located above the concave portion of the paper , And the state detection mechanism further includes a base fixed with respect to the printing channel, the first trigger is movably arranged on the base, and the first state sensor is fixedly arranged on the base.
11. The printer according to claim 11, wherein the state detection mechanism further comprises a first flap rotatably connected to the base, and the first trigger is fixedly connected to the first flap.
A paper conveying method is applied to a printer. The printer includes a first paper feeding channel, a first conveying mechanism, a printing channel, and a printing conveying mechanism. The first paper feeding channel is located in the forward direction of the paper during printing. Upstream of the printing channel, and the first conveying mechanism is configured to convey the first paper in the first paper supply channel to the printing channel, and the printing and conveying mechanism is configured to convey the paper in the printing channel, so The entrance of the printing channel is provided with a state detection mechanism for detecting the paper conveying state, and the paper conveying method includes:

Controlling the first conveying mechanism to convey the first paper in the first paper supply channel to the printing channel at a first speed;

Judging whether a paper conveying abnormality occurs according to the signal output by the state detection mechanism;

In a case where it is determined that the paper conveying abnormality occurs, the speed at which the first conveying mechanism conveys the first paper is adjusted to eliminate the paper conveying abnormality.
The paper conveying method according to claim 13, wherein the paper conveying abnormality includes a paper jam abnormality, and in the case of determining that the paper conveying abnormality occurs, the speed at which the first conveying mechanism conveys the first paper is adjusted to Troubleshoot the paper transport abnormalities, including:

In the case where it is determined that the abnormality of the flinching occurs, the speed at which the first conveying mechanism conveys the first paper is increased from the first speed to the second speed to eliminate the abnormality of the flinching.
The paper conveying method according to claim 13, wherein the paper conveying abnormality includes a stacking abnormality, and in the case of determining that the paper conveying abnormality occurs, adjusting the speed of the first conveying mechanism to convey the first paper, In order to rule out the abnormal paper transport, including:

In a case where it is determined that the stacking abnormality occurs, the speed at which the first conveying mechanism transports the first paper is reduced from the first speed to a third speed to eliminate the stacking abnormality.