A printer and its control method

Abstract

This invention provides a printer and its control method, relating to the field of printer technology. The printer includes a main frame, a paper feed roller, a paper feeding assembly, a drive assembly, and a transmission assembly. The paper feed roller is rotatably mounted on the main frame. The paper feeding assembly includes a paper feed roller rotatably mounted on the main frame. The drive assembly is driven to the paper feed roller of the paper feeding assembly, driving the paper feed roller to rotate forward or backward. The transmission assembly is driven to the drive assembly and the paper feed roller. While the drive assembly is driving the paper feed roller to rotate forward or backward, the rotation direction of the paper feed roller remains unchanged. Simultaneously, the transmission assembly, driven to the drive assembly and the paper feed roller, enables synchronous rotation between the paper feed roller and the paper feeding roller. Regardless of whether the paper feed roller rotates forward or backward, the rotation direction of the paper feed roller remains unchanged. This achieves paper straightening while ensuring synchronous rotation between the paper feed roller and the paper feeding roller.

Description

Technical Field

[0001] This invention relates to the field of printers, and more specifically, to a printer and its control method. Background Technology

[0002] A printer has a paper tray for loading paper, a paper feed roller for conveying the paper in the paper tray into the printer, and a paper drive roller for driving the paper to move inside the printer.

[0003] If the printing paper is placed at an angle in the paper tray, or if the driving force of the feed roller on both sides of the printing paper is different, the printing paper may be tilted when it moves to the feed roller, causing the printed image to be tilted.

[0004] The patent document with publication number CN1676446C discloses that "the paper feed roller starts to rotate from a certain paper position so that the recordable medium passes through the gap between the paper feed roller and the paper feed tray; forces the recordable medium to move along a paper feed path and prevents the recordable medium from being squeezed between the paper feed roller and the paper pressure roller; corrects the skew of the front end of the recordable medium until the paper feed roller returns to the fixed paper position; and rotates the paper feed roller in the opposite direction and clamps the recordable medium between the paper feed roller and the paper pressure roller to complete the paper feeding action."

[0005] However, in the solution disclosed in this patent, by "continuously driving the recordable medium with the paper-taking roller and cutting the front end of the recordable medium", it is easy to overdrive the recordable medium, causing wrinkles to occur on the recordable medium, or not drive the recordable medium sufficiently, resulting in the inability to completely correct the skewness of the recordable medium.

[0006] In existing technologies, different motors drive different rollers, thereby controlling the forward and reverse rotation of different rollers separately. This results in a complex structure and cannot guarantee complete synchronization between different rollers. Summary of the Invention

[0007] This invention provides a printer and its control method, which aims to improve the problem of complex drive structure of the paper feed roller and the inability to guarantee complete synchronization between the paper feed roller and the paper delivery roller.

[0008] To solve the above-mentioned technical problems, the present invention provides a printer, which includes a main frame, a paper feed roller, a paper feeding assembly, a drive assembly, and a transmission assembly.

[0009] The paper feed roller is rotatably mounted on the main frame. The paper feeding assembly includes a paper feed roller rotatably mounted on the main frame. A drive assembly is driven to the paper feed roller of the paper feeding assembly to drive the paper feed roller to rotate forward or backward. A transmission assembly is driven to the drive assembly and the paper feed roller. The direction of rotation of the paper feed roller remains unchanged when the drive assembly drives the paper feed roller to rotate forward or backward.

[0010] Optionally, the transmission assembly includes a first linkage, a second linkage, and a third linkage movably configured on the main frame. The second linkage and the third linkage are driveably connected. The paper feed roller can be switched between drively connected to the first linkage and the second linkage, so as to be driveably connected to the transmission assembly via the first linkage, or drively connected to the transmission assembly via the second linkage and the third linkage.

[0011] Optionally, the transmission assembly further includes a mounting base movably disposed on the main frame. The first linkage and the second linkage are rotatably disposed on the mounting base.

[0012] Optionally, the mounting base is rotatably mounted on the main frame. The transmission assembly further includes a transmission member rotatably mounted on the mounting base. The first linkage member and the second linkage member are tractively connected to the transmission member. The transmission member is tractively connected to the drive assembly and is capable of driving the mounting base to swing in opposite directions in both forward and reverse rotation states, thereby switching the first linkage member and the second linkage member connected to the paper feed roller.

[0013] Optionally, the third linkage is rotatably disposed on the main frame and is drively connected to the paper feed roller.

[0014] Optionally, the paper feed roller and the paper infeed roller are spaced apart. The printer also includes a sensor disposed between the paper infeed roller and the paper feed roller for detecting recording paper.

[0015] Optionally, the transmission assembly, the paper feed roller, and the paper feed roller are connected by a gear structure. The end of the paper feed roller is provided with a helical gear. The end of the paper feed roller is provided with a spur gear. The drive assembly also includes a transition member rotatably disposed on the main frame. The transition member has a helical tooth portion that meshes with the helical gear and a spur tooth portion that meshes with the transmission assembly.

[0016] Secondly, embodiments of the present invention provide a printer control method applicable to printers including sensors. The printer's paper feed roller and paper feed roller rotate synchronously via a transmission assembly. The rotation direction of the paper feed roller remains constant, while the paper feed roller can rotate in both directions. The control method includes:

[0017] S1. Control the paper feed roller to rotate in the first direction so that the paper feed roller rotates and drives the recording paper to move toward the paper feed roller and abut against the paper feed roller.

[0018] S2. Listen to the feedback signal of the sensor configured between the paper feed roller and the paper delivery roller. The feedback signal is emitted when the recording paper blocks the sensor during its movement.

[0019] S3. When the feedback signal is detected, the paper feed roller is controlled to continue rotating at a predetermined angle and then rotated in the opposite direction along the second direction to drive the recording paper to continue moving.

[0020] Optionally, the recording paper is placed in the printer's paper tray, with the recording paper having a length of L1 and a width of W1, and the paper tray having a width of W2.

[0021] While the paper feed roller rotates by a predetermined angle, the circumference of the paper feed roller rotates through a stroke A. Where A ≥ C + B, C is the first compensation amount, and B is the distance between the sensor and the paper feed roller.

[0022] The expression for the first compensation amount C is: .

[0023] Optionally, the length of the recording paper is L1 and the width is W1.

[0024] While the paper feed roller rotates by a predetermined angle, the circumference of the paper feed roller rotates through a stroke A. Where A ≥ D + B, D is the second compensation amount, and B is the distance between the sensor and the paper feed roller.

[0025] The expression for the second compensation amount D is: Where α is the empirical tilt angle associated with the printer.

[0026] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0027] In a first aspect, embodiments of the present invention drive the paper feed roller to rotate via a drive assembly. Simultaneously, a transmission assembly connects the drive assembly and the paper feed roller, enabling the paper feed roller and the paper feed roller to rotate synchronously.

[0028] Furthermore, regardless of whether the paper feed roller rotates clockwise or counterclockwise, the direction of rotation of the paper feed roller remains unchanged. This ensures both the correct alignment of the recording paper and the synchronized rotation between the paper feed roller and the paper feed roller, which has significant practical implications.

[0029] Secondly, by incorporating a sensor, the embodiments of the present invention can accurately detect the position of the recording paper and precisely control the rotation stroke of the paper feed roller based on that position. This ensures complete correction of the recording paper's tilt while preventing wrinkles from forming on the paper, which has significant practical implications. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is an isometric view of the printer from a first perspective provided in the first embodiment of the present invention (only some parts are shown for ease of display).

[0032] Figure 2 This is an isometric view of the printer from a second perspective provided in the first embodiment of the present invention (in a semi-sectional state for easy display).

[0033] Figure 3 This is an exploded view of the printer from a third-person perspective provided in the first embodiment of the present invention;

[0034] Figure 4 This is an exploded view of the printer from a second perspective provided in the first embodiment of the present invention (in a semi-sectional state for easy display).

[0035] Figure 5 This is a flowchart illustrating the control method provided in the second embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the tilting of the recording paper in the paper bin in the control method provided in the second embodiment of the present invention.

[0037] The markings in the diagram are: 1-Main frame; 2-Paper feed roller; 3-Drive assembly; 4-Helical tooth section; 5-Straight tooth section; 6-Transition component; 7-Transmission component; 8-First linkage component; 9-Second linkage component; 10-Mounting base; 11-Third linkage component; 12-Transmission assembly; 13-Paper feed roller; 14-Sensing component. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0044] Example 1, such as Figures 1 to 4 As shown, this embodiment provides a printer, which includes a main frame 1, a paper feed roller 13, a paper feeding assembly, a drive assembly 3, and a transmission assembly 12.

[0045] The paper feed roller 13 is rotatably mounted on the main frame 1. The paper feeding assembly includes a paper feed roller 2 rotatably mounted on the main frame 1. A drive assembly 3 is driven to the paper feed roller 2 of the paper feeding assembly to drive the paper feed roller 2 to rotate forward or backward. A transmission assembly 12 is driven to the drive assembly 3 and the paper feed roller 13. While the drive assembly 3 is driving the paper feed roller 2 to rotate forward or backward, the rotation direction of the paper feed roller 13 remains unchanged.

[0046] Specifically, the main frame 1 is connected to a paper tray. A paper feed roller 13 is mounted on the main frame 1 and located above the paper tray's output port. A recording paper tray is located at the bottom of the paper tray. The tray and the paper feed roller 13 face each other, with one end of the recording paper positioned between the paper feed roller 13 and the tray. During printing, the tray moves towards the paper feed roller 13, causing the paper feed roller 13 to come into pressure contact with the recording paper. This rotation of the paper feed roller 13 drives the recording paper along a predetermined trajectory into the printer.

[0047] Once the recording paper enters the printer, it is switched to the feed roller 2 to continue driving the recording paper along a predetermined trajectory. Normally, the feed roller 13 is a rubber roller, while the feed roller 2 is a steel roller. The steel roller has multiple spikes distributed on it for inserting the paper, allowing for more accurate paper transfer than a typical rubber roller drive.

[0048] In order to correct the tilt of the recording paper, the paper feed roller 2 needs to be able to rotate in both directions to create a reverse driving force, thereby correcting the recording paper. In prior art, different motors are usually used to control different rollers to achieve this function, which is not only complex in structure but also has poor synchronization, easily leading to overcorrection or undercorrection.

[0049] Printer drive components are typically stepper motors, capable of precisely controlling the angle and direction of rotation. In this embodiment of the invention, a drive assembly 3 is connected to the paper feed roller 2 and the stepper motor, with the stepper motor's forward and reverse rotation driving the paper feed roller 2 in both directions. Simultaneously, a transmission assembly 12 is connected to the drive assembly 3 and the paper feed roller 13. Regardless of whether the paper feed roller 2 rotates forward or backward, the rotation direction of the paper feed roller 13 remains constant, always rotating in the direction that drives the recording paper into the printer. Through the transmission assembly 12, a single stepper motor can simultaneously control both the paper feed roller 13 and the paper feed roller 2, achieving paper correction while ensuring synchronous rotation between them, which has significant practical implications.

[0050] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 3 and Figure 4 As shown, the transmission assembly 12, the paper feed roller 2, and the paper feed roller 13 are connected by a gear structure. A helical gear is provided at the end of the paper feed roller 2. A spur gear is provided at the end of the paper feed roller 13. The drive assembly 3 also includes a transition member 6 rotatably disposed on the main frame 1. The transition member 6 has a helical tooth portion 4 that meshes with the helical gear and a spur tooth portion 5 that meshes with the transmission assembly 12.

[0051] In this embodiment, the gear structure ensures that each rotation of the stepper motor is precisely transmitted to the paper feed roller 2 and the paper feed roller 13. It should be noted that the transmission assembly 12 has a speed reduction effect, therefore the rotational speed of the paper feed roller 2 is greater than that of the paper feed roller 13. Driving the paper feed roller 2 with helical gears better ensures the meshing performance of the drive assembly 3 and the paper feed roller 2 under high-speed rotation. Driving the paper feed roller 13 with spur gears ensures the meshing performance of the transmission assembly 12 and the paper feed roller 13 under heavy load conditions.

[0052] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 3 and Figure 4 As shown, the transmission assembly 12 includes a first linkage 8, a second linkage 9, and a third linkage 11 movably configured on the main frame 1. The second linkage 9 and the third linkage 11 are capable of transmission connection. The paper feed roller 13 can switch its transmission connection to the first linkage 8 and the second linkage 9, so that it is transmissionally connected to the transmission assembly 12 via the first linkage 8, or via the second linkage 9 and the third linkage 11.

[0053] In this embodiment, the transmission assembly 12 further includes a mounting base 10 movably disposed on the main frame 1. The first linkage 8 and the second linkage 9 are rotatably disposed on the mounting base 10. The third linkage 11 is rotatably disposed on the main frame 1 and is drively connected to the feed roller 13. Specifically, the mounting base 10 is coupled to the main frame 1 in a manner that allows it to move along a predetermined trajectory. By changing the position of the mounting base 10, the first linkage 8 is drively connected to the drive assembly 3 and the feed roller 13, or the second linkage 9 is drively connected to the drive assembly 3 and the third linkage 11, and is drively connected to the feed roller 13 via the third linkage 11. The mounting base 10 can be hinged to the main frame 1 or slidably mounted on the main frame 1. There are various ways to drive the mounting base 10; a separate motor can be used for driving, or the drive assembly 3 can directly drive the mounting base 10 through a friction wheel or other structure. This invention does not specifically limit this.

[0054] It is understood that in other embodiments, the third linkage 11 can also be disposed on the mounting base 10, so that the third linkage 11 and the second linkage 9 are always driven together, which can also achieve the effect that the paper feed roller 13 can switch between driving and connecting to the first linkage 8 and the second linkage 9. In other embodiments, the first linkage 8, the second linkage 9, and the third linkage 11 can also be rotatably disposed on the main frame 1, and by changing the position of the output end of the drive assembly 3, the paper feed roller 13 is driven to the drive assembly 3 through the first linkage 8, or through the first linkage 8 and the second linkage 9. The present invention does not specifically limit this.

[0055] By using the first linkage 8, the second linkage 9, and the third linkage 11, the rotation direction of the paper feed roller 13 remains unchanged regardless of whether the paper feed roller 2 rotates forward or backward. Furthermore, the rotation of the paper feed roller 2 and the paper feed roller 13 is synchronized, simplifying the structure and having significant practical value. Specifically, the synchronized rotation of the paper feed roller 2 and the paper feed roller 13 means that when the paper feed roller 2 rotates, the paper feed roller 13 also rotates, without limiting their rotational speed, linear velocity, etc., to be the same.

[0056] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 3 and Figure 4 The mounting base 10 shown is rotatably mounted on the main frame 1. The transmission assembly 12 also includes a transmission member 7 rotatably mounted on the mounting base 10. A first linkage member 8 and a second linkage member 9 are driveably connected to the transmission member 7. The transmission member 7 is drively connected to the drive assembly 3 and can drive the mounting base 10 to swing in opposite directions in both forward and reverse rotation states, so that the first linkage member 8 and the second linkage member 9 are switched to be connected to the paper feed roller 13.

[0057] In this embodiment, the mounting base 10 is rotatably mounted on the main frame 1. Furthermore, the transmission member 7 is rotatably mounted on the rotating shaft of the mounting base 10. When the transmission assembly 12 rotates, it exerts frictional force with the mounting base 10, causing the mounting base 10 to swing. Preferably, in this embodiment, both the first linkage member 8 and the second linkage member 9 are rotatably mounted on the mounting base 10 and are always connected to the transmission member 7. The third linkage member 11 is rotatably mounted on the main frame 1 and is always connected to the feed roller 13. The transmission member 7 is connected to the paper feed roller 2, and when the paper feed roller 2 rotates forward or backward, it drives the transmission member 7 to rotate. Thus, the frictional force causes the mounting base 10 to swing, directly driving the paper feed roller 2 via the first linkage member 8, or driving the paper feed roller 2 via the second linkage member 9 and the third linkage member 11.

[0058] Because the two transmission connection methods differ by a single linkage component, it is possible to ensure that the paper feed roller 2 always maintains the same direction of rotation, regardless of whether it rotates clockwise or counterclockwise, thus continuously driving the recording paper towards the paper feed roller 2. The structure is simple and requires only a single stepper motor for operation, making it highly practical.

[0059] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figures 2 to 4 As shown, the paper feed roller 2 and the paper feed roller 13 are spaced apart. The printer also includes a sensor 14 for detecting recording paper, disposed between the paper feed roller 13 and the paper feed roller 2.

[0060] Specifically, in prior art, there are problems such as excessively long correction times causing wrinkles on the recording paper, or insufficient correction times failing to completely correct the tilt angle of the recording paper. In this embodiment, a sensing element is provided between the feed roller 13 and the delivery roller 2 to sense the recording paper, accurately detecting its position, and then precisely controlling the rotation stroke of the delivery roller 2 based on the position. Thus, while ensuring complete correction of the recording paper's tilt, wrinkles are not generated on the recording paper, which has significant practical implications.

[0061] The sensing element 14 can be an existing sensing element such as an infrared sensor, and the present invention does not make any specific limitation.

[0062] Example 2

[0063] like Figure 5 and Figure 6 As shown, this embodiment of the invention provides a printer control method, which can be executed by the printer including the sensor 14 as described above. Specifically, it is executed by one or more processors within the printer to achieve the following steps:

[0064] S1. Control the paper feed roller 2 to rotate in the first direction so that the paper feed roller 13 rotates and drives the recording paper to move toward the paper feed roller 2 and abut against the paper feed roller 2.

[0065] In this embodiment, the first direction is the direction in which the recording paper is pushed towards the feed roller 13. At this time, the feed roller 13 rotates synchronously, driving the recording paper towards the paper feed roller 2. Finally, the recording paper comes into contact with the paper feed roller 2, and the paper feed roller 2 and the feed roller 13 form opposing thrusts on the recording paper, thereby correcting the tilted recording paper. The paper feed roller 2 and the feed roller 13 of the printer rotate synchronously through the transmission assembly 12. The rotation direction of the feed roller 13 remains unchanged, while the paper feed roller 2 can rotate in both directions.

[0066] Excessive correction time not only causes wrinkles on the recording paper surface but also wastes time, while insufficient correction time prevents the recording paper from being fully corrected. Therefore, a sensor 14 is installed between the feed roller 2 and the input roller 13 to achieve the following steps:

[0067] S2. Listen to the feedback signal of the sensor 14 located between the paper feed roller 13 and the paper delivery roller 2. The feedback signal is emitted when the recording paper blocks the sensor 14 during its movement.

[0068] S3. When a feedback signal is detected, the paper feed roller 2 is controlled to continue rotating at a predetermined angle, and then rotates in the opposite direction along the second direction to drive the recording paper to continue moving.

[0069] In this embodiment, the position of the recording paper is sensed by the sensor 14. After the sensor 14 senses the recording paper, it controls the paper feed roller 2 to continue rotating by a predetermined angle, thereby moving the recording paper forward a predetermined distance. During this process, the leading corner of the recording paper first comes into contact with the paper feed roller 2 and is pushed towards the paper feed roller 13 by the paper feed roller 2. The paper feed roller 2 continuously pushes the recording paper towards the paper feed roller 2, thereby correcting the angle of the recording paper. Because the sensor 14 detects the recording paper and then continues to rotate forward by a predetermined angle, the correction time can be controlled in the shortest possible time while ensuring that the recording paper is corrected. This not only reduces the time consumption but also ensures the quality of correction, preventing wrinkles from forming on the recording paper, which has significant practical implications.

[0070] Understandably, because the paper feed roller 13 is a rubber roller, it may slip when driving the recording paper. Therefore, the closer the sensor 14 is to the paper feed roller 2, the smaller the detection error, and the more precisely the predetermined angle can be controlled. Furthermore, in this process, the rotation direction of the paper feed roller 2 only changes once, making the control principle simpler and more precise.

[0071] Based on the above embodiments, in an optional embodiment of the present invention, the recording paper is placed in the paper storage compartment of the printer, the length of the recording paper is L1 and the width is W1, and the width of the paper compartment is W2. While the paper feed roller 2 rotates by a predetermined angle, the circumferential surface of the paper feed roller 13 rotates through a stroke A. Wherein, A≥C+B, C is the first compensation amount, and B is the distance between the sensing element 14 and the paper feed roller 2. Preferably, A=C+B.

[0072] The expression for the first compensation amount C is:

[0073] .

[0074] In this embodiment, the maximum first compensation amount required to correct the recording paper is calculated based on the maximum tilt that the recording paper can produce in the paper tray. This first compensation amount is the maximum distance that the two corners of the recording paper can produce along its length when it is tilted. It can be understood that when one corner of the recording paper touches the feed roller 2, simply driving the recording paper forward by the first compensation amount will cause the other corner of the recording paper to touch the feed roller 2, thereby straightening the recording paper.

[0075] The first compensation amount is calculated by measuring the maximum tilt angle of the recording paper in the paper tray, ensuring that the printer can correct the recording paper every time. Simultaneously, the position of the recording paper inside the printer is detected by the sensor 14, thereby controlling the correction process time and minimizing the correction time, which has significant practical implications.

[0076] In another embodiment, the recording paper has a length of L1 and a width of W1. While the paper feed roller 2 rotates by a predetermined angle, the circumferential surface of the paper feed roller 13 rotates through a stroke A. Where A ≥ D + B, D is the second compensation amount, and B is the distance between the sensor 14 and the paper feed roller 2. Preferably, A = D + B.

[0077] The expression for the second compensation amount D is:

[0078] .

[0079] Where α is the empirical tilt angle associated with the printer.

[0080] In this embodiment, the empirical tilt angle is the tilt angle generated as the recording paper moves from the feed roller 13 to the paper delivery roller 2. It is calculated by statistically analyzing measurements from multiple printers and represents the maximum or average tilt angle when the recording paper reaches the paper delivery roller 2. Calculating the second compensation amount using the empirical tilt angle allows the compensation amount to be controlled at a smaller value, thereby further shortening the time spent on the correction process while ensuring the correction of the recording paper, which has significant practical implications.

[0081] It is understood that the scheme of A≥B+C+D can also be used in other embodiments.

[0082] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A control method for a printer, wherein the paper feed roller (2) and the paper feed roller (13) of the printer that executes the control method rotate synchronously through a transmission assembly (12), and the rotation direction of the paper feed roller (13) remains unchanged, while the paper feed roller (2) can rotate in both directions; The paper feed roller (2) and the paper feed roller (13) are spaced apart; the printer also includes a sensor (14) for detecting recording paper disposed between the paper feed roller (13) and the paper feed roller (2); Its features are, The control method includes: Control the paper feed roller (2) to rotate in the first direction so that the paper feed roller (13) rotates and drives the recording paper to move toward the paper feed roller (2) and abut against the paper feed roller (2); Listen to the feedback signal of the sensor (14) configured between the paper feed roller (13) and the paper delivery roller (2); wherein the feedback signal is emitted when the recording paper blocks the sensor (14) during movement; When the feedback signal is detected, the paper feed roller (2) is controlled to continue rotating by a predetermined angle and then rotated in the opposite direction along the second direction to drive the recording paper to continue moving. The recording paper is placed in the paper storage compartment of the printer. The length of the recording paper is L1 and the width is W1. The width of the paper storage compartment is W2. While the paper feed roller (2) rotates at a predetermined angle, the circumference of the paper feed roller (13) rotates through a stroke A. Wherein, A≥C+B, C is the first compensation amount, and B is the distance between the sensing element (14) and the paper feed roller (2). The expression for the first compensation amount C is: .

2. A control method for a printer, wherein the paper feed roller (2) and the paper feed roller (13) of the printer that executes the control method rotate synchronously through a transmission assembly (12), and the rotation direction of the paper feed roller (13) remains unchanged, while the paper feed roller (2) can rotate in both directions; The paper feed roller (2) and the paper feed roller (13) are spaced apart; the printer also includes a sensor (14) for detecting recording paper disposed between the paper feed roller (13) and the paper feed roller (2); Its features are, The control method includes: Control the paper feed roller (2) to rotate in the first direction so that the paper feed roller (13) rotates and drives the recording paper to move toward the paper feed roller (2) and abut against the paper feed roller (2); Listen to the feedback signal of the sensor (14) configured between the paper feed roller (13) and the paper delivery roller (2); wherein the feedback signal is emitted when the recording paper blocks the sensor (14) during movement; When the feedback signal is detected, the paper feed roller (2) is controlled to continue rotating by a predetermined angle and then rotated in the opposite direction along the second direction to drive the recording paper to continue moving. The length of the recording paper is L1 and the width is W1; while the paper feed roller (2) rotates at a predetermined angle, the circumference of the paper feed roller (13) rotates through a stroke A; where A≥D+B, D is the second compensation amount, and B is the distance between the sensing element (14) and the paper feed roller (2); The expression for the second compensation amount D is: Where α is the empirical tilt angle associated with the printer.

3. A printer adapted to perform a printer control method as described in any one of claims 1 or 2; the printer comprising: Main framework (1); The paper feed roller (13) is rotatably mounted on the main frame (1). The paper feeding assembly includes a paper feeding roller (2) rotatably configured on the main frame (1); The drive assembly (3) is connected to the paper feeding roller (2) of the paper feeding assembly and is used to drive the paper feeding roller (2) to rotate in the forward or reverse direction. Its features are, Also includes: The transmission assembly (12) is connected to the drive assembly (3) and the feed roller (13); In the state where the drive assembly (3) drives the paper feed roller (2) to rotate forward and reverse, the rotation direction of the paper feed roller (13) remains unchanged. The paper feed roller (2) and the paper feed roller (13) are spaced apart; the printer also includes a sensor (14) for detecting recording paper disposed between the paper feed roller (13) and the paper feed roller (2).

4. The printer according to claim 3, characterized in that, The transmission assembly (12) includes a first linkage (8), a second linkage (9), and a third linkage (11) movably configured on the main frame (1); the second linkage (9) and the third linkage (11) are capable of transmission connection; The paper feed roller (13) can be switched between the first linkage (8) and the second linkage (9) for transmission connection to the transmission assembly (12) via the first linkage (8), or via the second linkage (9) and the third linkage (11) for transmission connection to the transmission assembly (12).

5. The printer according to claim 4, characterized in that, The transmission assembly (12) further includes a mounting base (10) movably disposed on the main frame (1); the first linkage (8) and the second linkage (9) are rotatably disposed on the mounting base (10).

6. The printer according to claim 5, characterized in that, The mounting base (10) is rotatably mounted on the main frame (1); The transmission assembly (12) further includes a transmission member (7) rotatably disposed on the mounting base (10); the first linkage member (8) and the second linkage member (9) are throttle-connected to the transmission member (7); The transmission component (7) is connected to the drive assembly (3) and can drive the mounting base (10) to swing in opposite directions in both forward and reverse rotation states, so that the first linkage component (8) and the second linkage component (9) are switched to be connected to the paper feed roller (13).

7. The printer according to claim 4, characterized in that, The third linkage (11) is rotatably disposed on the main frame (1) and is connected to the paper feed roller (13) via transmission.

8. The printer according to any one of claims 3 to 7, characterized in that, The transmission assembly (12), the paper feeding roller (2), and the paper feed roller (13) are connected by a gear structure. The end of the paper feeding roller (2) is provided with a helical gear; the end of the paper feed roller (13) is provided with a spur gear; The drive assembly (3) further includes a transition member (6) rotatably disposed on the main frame (1); the transition member (6) is provided with a helical tooth portion (4) that cooperates with the helical gear and a spur tooth portion (5) that cooperates with the transmission assembly (12).

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