Label printer, and label printer control method and device

Abstract

Disclosed are a label printer (1000), and a label printer control method and device (900). The method comprises: when it is determined that a label printer is in a printing pending state and a rubber roller assembly (1210) is not in a transmission connection state, controlling a motor to drive a medium tape for transfer to be conveyed forwardly by a first preset length (S102); and when the rubber roller assembly is in the transmission connection state, controlling the motor to drive label paper to retract to a target complete transfer position, so that the medium tape for transfer retracts by a second preset length, wherein the second preset length is less than or equal to the first preset length (S104). The method solves the technical problem that direct printing when pulling label paper out of a paper outlet of a label printer by a certain distance will cause the currently printed label paper to fail to display complete printing information, resulting in waste of printing paper.

Description

Label printers, label printer control methods and devices

[0001] Related applications

[0002] This application claims priority to Chinese Patent Application No. 2025102186395, filed on February 26, 2025, entitled “Label Printer, Control Method and Apparatus for Label Printer”, and Chinese Patent Application No. 2025203224328, filed on February 26, 2025, entitled “A Printer”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of printer technology and equipment, and in particular to a label printer, a control method for the label printer, and a device for the control of the label printer. Background Technology

[0004] In recent years, with the widespread application of label printers in many industries, cost control during label printer use has received increasing attention. When printing labels, users often pull the label paper out of the printer's output tray a certain distance. If printing continues directly from this point, the label information will not be fully displayed, resulting in wasted paper. Summary of the Invention

[0005] This application provides a label printer, a label printer control method, and an apparatus.

[0006] In a first aspect, embodiments of this application provide a control method for a label printer, the method comprising:

[0007] When it is determined that the label printer is in a printing-ready state and the roller assembly is not in a transmission connection state, the motor is controlled to drive the medium belt to be transferred to be conveyed forward for a first preset length.

[0008] When the roller assembly is in the transmission connection state, the motor is controlled to drive the label paper back to the target complete transfer position, so that the medium to be transferred is retracted by a second preset length; wherein the second preset length is less than or equal to the first preset length.

[0009] Optionally, the method further includes:

[0010] When controlling the motor to drive the label paper back to the target complete transfer position, the first back speed of the label paper is greater than or equal to the second back speed of the medium tape to be transferred.

[0011] Optionally, after controlling the motor to drive the label paper back to the target complete transfer position, the method further includes:

[0012] When the label printer is in the printing state, the roller assembly is in the transmission connection state, and the motor is controlled to drive the label paper and the medium to be transferred to be conveyed in the forward direction.

[0013] The first forward conveying speed corresponding to the label paper is the same as the second forward conveying speed corresponding to the medium tape to be transferred.

[0014] Optionally, the label printer includes a first body and a second body, the first body is provided with the motor, the second body is provided with the rubber roller assembly, and the second body is further configured to cover the first body;

[0015] Before controlling the motor to drive the transfer medium belt to be forward-conveyed for a first preset length when the label printer is determined to be in a printing-ready state and the roller assembly is not in a transmission connection state, the method further includes:

[0016] When the second body is detected covering the first body and the label printer is not printing, it is determined that the label printer is in a ready-to-print state;

[0017] When it is detected that the rubber roller assembly is not connected to the motor drive, it is determined that the rubber roller assembly is not in a drive connection state.

[0018] Optionally, the first body is further provided with a first lid-closing detection component, and the second body is further provided with a second lid-closing detection component;

[0019] When it is determined that the label printer is in a printing-ready state and the roller assembly is not in a transmission connection state, controlling the motor to drive the transfer medium belt to be conveyed forward for a first preset length includes:

[0020] When the label printer is determined to be in a ready-to-print state, the first cap-closing detection component and the second cap-closing detection component abut against each other to control the label printer to generate a first instruction;

[0021] When it is determined that the rubber roller assembly is not in a drive connection state, a second instruction is generated based on the label printer;

[0022] Based on the first instruction and the second instruction, the motor is controlled to drive the medium belt to be transferred to be conveyed forward to the first preset length.

[0023] Optionally, the label printer includes a first body and a second body, the first body is provided with the motor, the second body is provided with the rubber roller assembly, and the second body is further configured to cover the first body;

[0024] Before controlling the motor to drive the transfer medium belt to be forward-conveyed for a first preset length when the label printer is determined to be in a printing-ready state and the roller assembly is not in a transmission connection state, the method further includes:

[0025] When it is detected that the second body is not covered by the first body, it is determined that the label printer is in a ready-to-print state and the rubber roller assembly is not in a transmission connection state.

[0026] Optionally, the first body is further provided with a first lid-closing detection component, and the second body is further provided with a second lid-closing detection component;

[0027] When it is determined that the label printer is in a printing-ready state and the roller assembly is not in a transmission connection state, controlling the motor to drive the transfer medium belt to be conveyed forward for a first preset length includes:

[0028] When it is determined that the first cover detection component and the second cover detection component are not in contact, the second body is not covered by the first body, and the label printer is controlled to generate a third instruction.

[0029] Based on the third instruction, the motor is controlled to drive the medium belt to be transferred to be conveyed forward to the first preset length.

[0030] Optionally, the rubber roller assembly includes a rubber roller and a rubber roller gear, wherein the rubber roller gear is disposed on the rubber roller;

[0031] When the rubber roller assembly is in the transmission connection state, controlling the motor to drive the label paper back to the target complete transfer position includes:

[0032] When the motor and the rubber roller are connected by a gear transmission so that the rubber roller assembly is in the transmission connection state, the motor is controlled to drive the rubber roller assembly to move the label paper back;

[0033] When the label paper is detected to have retracted to the target complete transfer position, the motor is controlled to stop driving the glue roller assembly.

[0034] Optionally, the label printer further includes a paper return detection component, which includes a label paper light transmittance detection unit. The paper return detection component is configured to detect the light transmittance threshold of the projection area corresponding to the light transmittance detection unit on the label paper.

[0035] The step of controlling the motor to stop driving the adhesive roller assembly when the label paper is detected to have retracted to the target complete transfer position includes:

[0036] When the label paper is retracted, the light transmittance threshold of the projection area corresponding to the light transmittance detection part on the label paper is detected based on the paper return detection component;

[0037] When the light transmittance threshold changes from the first preset light transmittance threshold to the second preset light transmittance threshold, the label paper is determined to retract to the target complete transfer position, and the motor is controlled to stop driving the glue roller assembly.

[0038] Optionally, the method further includes:

[0039] When the light transmittance threshold is determined to be the first preset light transmittance threshold, the projection area is located in the label face paper area of ​​the label paper;

[0040] When the light transmittance threshold is determined to be the second preset light transmittance threshold, the projection area is located in the blank release paper area adjacent to the label face paper area in the label paper.

[0041] Optionally, the second preset light transmittance threshold is less than the first preset light transmittance threshold; or, the second preset light transmittance threshold is greater than the first preset light transmittance threshold.

[0042] Optionally, after controlling the motor to drive the label paper back to the target complete transfer position, the method further includes:

[0043] When the label printer is in a ready-to-print state and the roller assembly is in a transmission connection state, the motor is controlled to drive the label paper to be conveyed forward for a third preset length.

[0044] The third preset length is the target length from the light transmission detection unit to the paper tearing assembly at the corresponding printing exit of the label printer.

[0045] Optionally, the method further includes:

[0046] When the motor is controlled to drive the label paper to be conveyed forward for a third preset length, the third forward conveying speed of the label paper is the same as the fourth forward conveying speed of the medium tape to be transferred.

[0047] Optionally, the label printer includes a first body, the first body being provided with a mounting cavity, the mounting cavity being configured to mount a media cartridge to be transferred, the media cartridge to be transferred including a dispensing shaft, a take-up shaft and a torsion spring, the torsion spring being configured to provide preload force to the media tape to be transferred when the dispensing shaft and the take-up shaft cooperate to forward convey the media tape to be transferred, so that the media tape to be transferred between the dispensing shaft and the take-up shaft is in a taut state;

[0048] The second preset length is less than the target conveying distance of the medium to be transferred when it changes from the first tension state to the second tension state;

[0049] Wherein, the first tension state is the tension state corresponding to the initial tension of the medium tape to be transferred, and the second tension state is the tension state corresponding to the initial stable preload of the medium tape to be transferred.

[0050] Secondly, embodiments of this application provide a label printer, including:

[0051] The first body is provided with a motor and a mounting cavity. The mounting cavity is configured to mount a dispensing shaft and a retracting shaft. Under the drive of the motor, the dispensing shaft and the retracting shaft cooperate to forward convey or retract the medium belt to be transferred.

[0052] The second machine body is connected to the first machine body. The second machine body is equipped with a rubber roller assembly. When the rubber roller assembly is in the transmission connection state, the rubber roller assembly is connected to the motor to drive the label paper and the medium belt to be transferred to move in the same direction.

[0053] Optionally, the first body is further provided with a first lid-closing detection component, the second body is further provided with a second lid-closing detection component, and the second body is further configured to cover the first body;

[0054] When the second body is placed on top of the first body, the first cover detection component abuts against the second cover detection component.

[0055] Optionally, the label printer further includes a paper return detection component, which includes a light transmission detection unit. The paper return detection component is configured to detect the light transmission threshold of the projection area corresponding to the light transmission detection unit on the label paper.

[0056] Optionally, the label printer further includes: a roller drive wheel assembly connected to a roller assembly, the roller assembly being configured for mounting label paper; a transfer media belt drive shaft assembly, including a transfer media belt drive shaft assembly configured for mounting the transfer media belt, and a connector slidably connected to the transfer media belt drive shaft assembly; and a transfer media belt drive wheel assembly connected to the connector; wherein the first preset speed output by the transfer media belt drive shaft assembly is V1, and the second preset speed output by the roller assembly is V2, V1>V2; when the transfer media belt is in contact with the label paper, the roller drive wheel assembly drives the roller assembly to rotate, thereby driving the label paper to move along a preset direction at the second preset speed V2, and the connector slides relative to the transfer media belt drive shaft assembly to make the transfer media belt and the label paper move synchronously.

[0057] Optionally, 1 < V1 / V2 ≤ 2.

[0058] Optionally, the label printer further includes a media tape cassette for transfer, which includes a media tape shaft configured for winding the media tape. The media tape shaft is coaxially mounted to a media tape drive shaft assembly. The connector includes a first connecting segment and a second connecting segment. The first connecting segment is connected to the media tape drive wheel assembly, and the second connecting segment is connected to the first connecting segment. The second connecting segment is circumferentially mounted on the media tape drive shaft assembly along the media tape shaft, so that when the media tape is in contact with the label paper, the second connecting segment can slide relative to the media tape drive shaft assembly along the circumferential direction of the media tape shaft.

[0059] Optionally, the drive shaft assembly of the medium to be transferred is disposed on one side of the drive wheel assembly of the medium to be transferred along the axial direction of the shaft of the medium to be transferred; the drive wheel assembly of the medium to be transferred has a slot, and the first connecting section extends from the second connecting section to at least partially extend into the slot and be engaged with the drive wheel assembly of the medium to be transferred.

[0060] Optionally, the drive shaft assembly of the transfer medium tape has an annular groove, and the second connecting section is disposed in the annular groove. In the axial direction of the transfer medium tape shaft, the second connecting section contacts the wall surface of the drive shaft assembly defining the annular groove, so as to define the position of the second connecting section along the axial direction of the transfer medium tape shaft.

[0061] Optionally, the first connecting segment and the second connecting segment are integrally formed; the second connecting segment is spirally wound around the drive shaft assembly of the medium to be transferred, and the number of turns of the second connecting segment is at least two.

[0062] Optionally, the label printer includes a main body and a support rod, with the support rod mounted on the main body; the drive shaft assembly for the media belt to be transferred includes: a fixed shaft, coaxially sleeved on the outer periphery of the support rod and rotatably mounted on the support rod; a drive shaft for the media belt to be transferred, configured for mounting the media belt to be transferred and mounted on one end of the fixed shaft; and a sleeve, connected to the other end of the fixed shaft and a connector respectively.

[0063] Optionally, the drive shaft assembly of the printing medium belt also includes a one-way bearing. The drive shaft of the printing medium belt is connected to the other end of the fixed shaft through the one-way bearing, and the drive shaft of the printing medium belt is sleeved on the support rod, the sleeve and the outer periphery of the one-way bearing. The one-way bearing is configured to limit the position of the drive shaft of the printing medium belt relative to the fixed shaft when the printing medium belt has a tendency to move in a preset direction. The one-way bearing is also configured to allow the drive shaft of the printing medium belt to rotate axially around the one-way bearing relative to the fixed shaft when the printing medium belt has a tendency to move in the opposite direction of the preset direction.

[0064] Optionally, one of the outer wall surface of the one-way bearing and the inner wall surface of the drive shaft of the medium to be transferred is provided with a limiting groove and the other is provided with a limiting protrusion. The limiting groove extends along the axial direction of the one-way bearing, and the limiting protrusion is provided in the limiting groove to limit the position of the drive shaft of the medium to be transferred relative to the one-way bearing in the circumferential direction of the one-way bearing.

[0065] Optionally, one of the sleeve and the fixed shaft has a polygonal cylindrical segment and the other has a polygonal cylindrical groove, with the polygonal cylindrical segment inserted into the polygonal cylindrical groove to define the position of the sleeve relative to the fixed shaft around the fixed shaft in the circumferential direction.

[0066] Optionally, the label printer further includes a media tape cassette for transfer, the media tape cassette including a media tape shaft configured for winding the media tape; the media tape drive shaft assembly includes a media tape drive shaft, the media tape shaft being coaxially mounted on the media tape drive shaft, the outer wall of the media tape drive shaft having at least one first ratchet tooth, and the inner wall of the media tape drive shaft having at least one second ratchet tooth, the media tape drive shaft rotating causing the first and second ratchet teeth to abut against each other, thereby driving the media tape shaft to rotate axially around the media tape shaft.

[0067] Optionally, the transfer media tape drive shaft assembly includes a transfer media tape drive shaft; the label printer also includes a transfer media tape cassette, which includes two transfer media tape shafts configured for winding the transfer media tape, one of which is a take-up shaft 1112, and the take-up shaft 1112 is coaxially mounted to the transfer media tape drive shaft.

[0068] Optionally, the rubber roller drive wheel assembly is in contact with the media belt drive wheel assembly to be transferred; the label printer also includes a motor, which is connected to the media belt drive wheel assembly or the rubber roller drive wheel assembly to drive the rubber roller drive wheel assembly and the media belt drive wheel assembly to be transferred.

[0069] Optionally, the rubber roller drive wheel assembly includes a first rubber roller drive gear and a second rubber roller drive gear that mesh with each other, and the first rubber roller drive gear is connected to a motor; the transfer medium belt drive wheel assembly includes a first transfer medium belt drive gear and a second transfer medium belt drive gear that mesh with each other, the first transfer medium belt drive gear and the second rubber roller drive gear mesh with each other, and the second transfer medium belt drive gear is connected to a connector to drive the connector to move.

[0070] Optionally, the second roller drive gear is connected to the roller assembly and can drive the roller assembly to rotate; wherein, the diameter of the second roller drive gear is larger than the diameter of the second transfer medium belt drive gear, so that the first preset speed V1 of the transfer medium belt drive shaft assembly driving the transfer medium belt to move is greater than the second preset speed V2 of the roller assembly driving the label paper to move.

[0071] Optionally, the first body includes an installation opening communicating with the mounting cavity, the installation opening being configured for feeding label paper, and the rubber roller drive wheel assembly and the transfer medium belt drive wheel assembly are both installed in the mounting cavity; the second body is coverably installed on the first body, and during the process of the second body covering the first body, the label paper gradually comes into contact with the transfer medium belt, and the rubber roller drive wheel assembly and the rubber roller assembly are coupled, so that the rubber roller drive wheel assembly can drive the rubber roller assembly to rotate and dispense the label paper.

[0072] Thirdly, embodiments of this application provide a control device for a label printer, the control device comprising:

[0073] The first control module is adapted to control the motor to drive the transfer medium belt to be conveyed forward for a first preset length when it is determined that the label printer is in a printing state and the rubber roller assembly is not in a transmission connection state.

[0074] The second control module is adapted to control the motor to drive the label paper back to the target complete transfer position when the glue roller assembly is in the transmission connection state, so that the medium to be transferred is retracted by a second preset length; wherein the second preset length is less than or equal to the first preset length.

[0075] Fourthly, embodiments of this application provide a computer-readable storage medium that stores one or more programs, which, when executed by a processor, implement the method described in any one of the above-described methods.

[0076] The beneficial effects of the technical solutions provided in some embodiments of this application include at least the following: In the embodiments provided in this application, when the label printer is in a ready-to-print state, before printing begins and before the rubber roller assembly is in a drive-connected state, the motor and the rubber roller assembly are not yet connected. At this time, the motor drives the transfer medium belt to be forward-propelled for a first preset length. Since the motor and the rubber roller assembly are not yet connected, the label paper corresponding to the rubber roller assembly does not move when the transfer medium belt is forward-propelled for the first preset length. After the transfer medium belt is forward-propelled for the first preset length, when the rubber roller assembly is in a drive-connected state, the motor can drive the rubber roller assembly to move the label paper and the transfer medium belt in the same direction. At this time, the motor drives the label paper back to the target complete transfer position, so that the transfer medium belt retracts for a second preset length. This allows the label printer to display complete printing information on the label paper during printing, and the retraction of the transfer medium belt saves transfer medium and improves utilization. Here, the second preset length is less than or equal to the first preset length, ensuring that after the transfer media tape retracts, there will be no printing failure due to the absence of transfer media on the transfer media tape. The control method for the label printer provided in this application effectively solves the technical problem that pulling the label paper out of the label printer's output tray and printing directly causes the currently printed label paper to fail to display complete printing information, resulting in wasted printing paper. Attached Figure Description

[0077] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0078] Figure 1 is a flowchart illustrating a control method for a label printer provided in an embodiment of this application;

[0079] Figure 2 is a schematic diagram of the process for controlling the motor in a label printer according to an embodiment of this application;

[0080] Figure 3 is a schematic diagram of another process for controlling the motor in a label printer according to an embodiment of this application;

[0081] Figure 4 is a schematic diagram of another method for controlling the motor in a label printer according to an embodiment of this application;

[0082] Figure 5 is a schematic diagram of a process for controlling the motor in a label printer based on a light transmittance threshold according to an embodiment of this application;

[0083] Figure 6 is a structural schematic diagram of a label printer provided in an embodiment of this application;

[0084] Figure 7 is a structural schematic diagram of a transfer media cartridge provided in an embodiment of this application;

[0085] Figure 8 is a schematic diagram of the structure of a transfer media cartridge cover provided in an embodiment of this application;

[0086] Figure 9 is a three-dimensional structural diagram of the printer in one embodiment of this application.

[0087] Figure 10 is a three-dimensional structural diagram of a portion of the printer in one embodiment of this application;

[0088] Figure 11 is a three-dimensional structural diagram of a portion of the printer in one embodiment of this application;

[0089] Figure 12 is a three-dimensional schematic diagram of part of the printer structure in Figure 10;

[0090] Figure 13 is an enlarged view of point A in Figure 12;

[0091] Figure 14 is a three-dimensional schematic diagram of part of the printer structure in Figure 10;

[0092] Figure 15 is a schematic diagram of the disassembled drive shaft assembly of the medium to be transferred in one embodiment of this application;

[0093] Figure 16 is a cross-sectional view of a printer in one embodiment of this application;

[0094] Figure 17 is a top view of part of the printer structure in Figure 14.

[0095] Figure 18 is a schematic diagram of the structure of a control device for a label printer provided in an embodiment of this application;

[0096] Reference numerals: 1000, Label printer; 1310, Light transmission detection unit; 1311, Light emitter; 1312, Light receiver; 1210, Glue roller assembly; 1211, Glue roller; 1212, Glue roller gear; 1313, Receiver; 1314, Transmitter; 1100, First body; 1200, Second body; 1110, Medium to be transferred cartridge; 1113, Medium to be transferred cartridge cover; 1112, Retrieval shaft; 1111, Dispensing shaft; 1114, First protrusion; 1115, Torsion spring; 1116, Second protrusion; 1117, Medium to be transferred belt shaft; 1400, Glue roller drive wheel assembly; 1411, First Glue roller drive gear; 1412, Second Glue roller drive gear; 1500, Media belt drive shaft assembly; 1510, Media belt drive shaft group; 1511, Fixed shaft; 1512, Media belt drive shaft; 1512a, Limiting protrusion; 1512b, First ratchet; 1513, Sleeve; 1513a, Annular groove; 1514, One-way bearing; 1514a, Limiting groove; 1520, Connector; 1521, First connecting section; 1522, Second connecting section; 1600, Media belt drive wheel group; 1610, First media belt drive gear; 1620, Second media belt drive gear; 1621, Slot; 1710, Main body; 1720, Support rod; 1730, Motor; 900, Control device for label printer; 910, First control module; 920, Second control module. Detailed Implementation

[0097] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0098] The terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0099] In related technologies, when users use label printers, they usually pull the label paper out of the label printer's paper output slot a certain distance. If the label paper is printed directly at this time, the label face paper on the label paper will not be in the proper printing position, resulting in the label paper not being able to display complete printing information, thus leading to the waste of the label face paper.

[0100] To address the related technical issues, this application provides a control method for a label printer. The method includes: when the label printer is in a printing state and the roller assembly is not in a transmission connection state, controlling a motor to drive the transfer medium belt to be conveyed forward for a first preset length; when the roller assembly is in a transmission connection state, controlling a motor to drive the label paper back to the target complete transfer position, so that the transfer medium belt is retracted for a second preset length; wherein the second preset length is less than or equal to the first preset length.

[0101] In the embodiments provided in this application, when the label printer is in the ready-to-print state (before printing begins), and the roller assembly is not in the drive connection state, the motor and roller assembly are not yet connected. At this time, the motor drives the transfer medium belt forward to convey a first preset length. Since the motor and roller assembly are not yet connected, the label paper corresponding to the roller assembly does not move during this forward conveying. After the transfer medium belt has been conveyed for the first preset length, when the roller assembly is in the drive connection state, the motor can drive the roller assembly to move the label paper and the transfer medium belt in the same direction. At this time, the motor drives the label paper back to the target complete transfer position, causing the transfer medium belt to retract by a second preset length. This allows the label printer to display complete printing information on the label paper during printing, and the retraction of the transfer medium belt saves transfer medium, improving utilization. Here, the second preset length is less than or equal to the first preset length, ensuring that there is no transfer medium on the transfer medium belt after the retraction, preventing printing failure. The control method for the label printer provided in this application can effectively solve the technical problem that if the label paper is pulled out of the paper output slot of the label printer and printed directly, the printed label paper will not be able to display complete printing information, resulting in wasted printing paper.

[0102] Please refer to Figure 1, which is a flowchart illustrating a label printer control method according to an embodiment of this application. The execution entity of this embodiment can be an electronic device (such as a label printer or other devices including label printers) that executes the label printer control method, a processor within the electronic device executing the label printer control method, or a label printer control service within the electronic device executing the label printer control method. For ease of description, the following uses a processor within an electronic device as an example to describe the specific execution process of the label printer control method.

[0103] As shown in Figure 1, the control methods for the label printer include:

[0104] S102: When the label printer is in the printing state and the roller assembly is not in the transmission connection state, control the motor to drive the medium belt to be transferred to be conveyed forward for a first preset length.

[0105] The label printer includes a first body and a second body. The first body has a motor and a mounting cavity. The mounting cavity is configured to mount a dispensing shaft and a retracting shaft. Driven by the motor, the dispensing shaft and the retracting shaft cooperate to forward or retract the media tape to be transferred. The second body is connected to the first body and has a rubber roller assembly. When the rubber roller assembly is in a transmission connection state, it is connected to the motor to drive the label paper and the media tape to be transferred to move in the same direction. For example, the first body can be the printer body or printer casing of the label printer, and the second body can be the printer cover. The media tape to be transferred includes, but is not limited to, a ribbon. When the media tape to be transferred is a ribbon, the media to be transferred on the media tape is toner.

[0106] When the label printer is in the print-ready state, it has not yet started printing labels. When the roller assembly is not in the drive connection state, the label printer's motor is not yet connected to the roller assembly, so the motor cannot drive the roller assembly to move the label paper. During the preparation stage before printing, i.e., when the label printer is in the print-ready state and the roller assembly is not in the drive connection state, the motor is controlled to drive the transfer media belt forward to a first preset length.

[0107] Here, the first conveying direction corresponding to the forward conveying of the media belt to be transferred is the conveying direction in which the dispensing shaft faces the receiving shaft when the dispensing shaft is conveying the media belt to be transferred. When the motor drives the media belt to be transferred to be transported forward for a first preset length, the dispensing shaft dispenses the media belt of the first preset length, and the receiving shaft retrieves the media belt of the first preset length.

[0108] It should be understood that before using a label printer, users will pull out a certain distance of the label paper in the label printer to ensure that the label paper is in the appropriate printing position. This aligns the label face sheets from the second or Nth sheet (where N is a positive integer greater than or equal to 3) with the printing position. To make full use of the unused label face sheets, the motor can be independently controlled to drive the transfer media belt forward to a first preset length. This allows the transfer media belt to be collected simultaneously when unused label face sheets are recycled, and enables the transfer media belt and the label face sheets in the label paper to cooperate with each other to complete the printing process. This saves label paper and effectively avoids label printer printing failures.

[0109] S104: When the rubber roller assembly is in the transmission connection state, control the motor to drive the label paper back to the target complete transfer position so that the medium to be transferred is back by a second preset length; wherein, the second preset length is less than or equal to the first preset length.

[0110] In this process, after the motor drives the printing media belt to be transferred forward for a first preset length, the rubber roller assembly is connected to the motor drive to put the rubber roller assembly into a drive connection state. Here, the connection between the rubber roller assembly and the motor drive can be achieved based on the automatic control of the label printer, or it can be achieved by the user manually connecting the rubber roller assembly to the motor drive.

[0111] When the rubber roller assembly is in the drive connection state, the motor can synchronously drive the rubber roller assembly to move the label paper and the transfer medium belt in the same direction. Here, the direction of movement of the label paper and the direction of movement of the transfer medium belt are parallel, for example, the angle between the directions of movement is 0°; or, the direction of movement of the label paper and the direction of movement of the transfer medium belt are basically parallel, for example, the angle between the directions of movement is slightly greater than 0°.

[0112] Therefore, when the roller assembly is in a drive connection state, and the control motor drives the label paper back to the target complete transfer position, the transfer medium belt also retracts synchronously with the label paper. When the transfer medium belt retracts, the second conveying direction corresponding to the forward conveying of the transfer medium belt is the same as the conveying direction of the retraction axis and the dispensing axis.

[0113] When the motor drives the label paper back to the target position for complete transfer, the unprinted label face paper on the pulled-out label paper returns to the printing position, effectively saving label face paper. When the label paper returns to the target position for complete transfer, two scenarios can occur.

[0114] In the first scenario, when the label paper retracts to the target complete transfer position, printing directly on the label paper at this point will ensure that the corresponding label face displays complete printing information, thus preventing information omissions during printing. During the label paper retraction process, the transfer media tape retracts by a second preset length, thereby improving the utilization rate of the transfer media tape and avoiding waste. Furthermore, the second preset length is less than or equal to the first preset length, ensuring that there is no transfer media tape available after the tape retracts, preventing printing failures.

[0115] In the second scenario, after the label paper retracts to the target complete transfer position, it needs to move a pre-set target length to reach the target position. This ensures that when printing, the corresponding label face can display complete printing information, preventing information omissions during printing. Similarly, during the label paper retraction process, the transfer media tape retracts by a second preset length, improving the utilization rate of the transfer media tape and avoiding waste. Furthermore, the second preset length is less than or equal to the first preset length, ensuring that there is no transfer media tape available after the tape retracts, preventing printing failures.

[0116] In the embodiments provided in this application, when the label printer is in the ready-to-print state (before printing begins), and the roller assembly is not in the drive connection state, the motor and roller assembly are not yet connected. At this time, the motor drives the transfer medium belt forward to transport a first preset length. Since the motor and roller assembly are not yet connected, the label paper corresponding to the roller assembly does not move when the transfer medium belt is transported forward to the first preset length. After the transfer medium belt has been transported forward to the first preset length, when the roller assembly is in the drive connection state, the motor can drive the roller assembly to move the label paper and the transfer medium belt in the same direction. At this time, the motor drives the label paper back to the target complete transfer position, so that the transfer medium belt retracts by a second preset length. This allows the label printer to display complete printing information on the label paper during printing, and the retraction of the transfer medium belt saves transfer medium, improving utilization. Here, the second preset length is less than or equal to the first preset length, ensuring that after the transfer medium belt retracts, there is no situation where there is no transfer medium on the transfer medium belt, leading to printing failure. The control method for the label printer provided in this application can effectively solve the technical problem that if the label paper is pulled out of the paper output slot of the label printer and printed directly, the printed label paper will not be able to display complete printing information, resulting in wasted printing paper.

[0117] In one embodiment provided in this application, the control method for the label printer further includes:

[0118] When the control motor drives the label paper to retract to the target complete transfer position, the first retraction speed of the label paper is greater than or equal to the second retraction speed of the medium to be transferred.

[0119] During the process of controlling the motor to drive the label paper back to the target complete transfer position, when the medium to be transferred back synchronously with the label paper, in order to make the second preset length of the medium to be transferred back less than or equal to the first preset length, the first back speed corresponding to the label paper can be controlled to be greater than or equal to the second back speed corresponding to the medium to be transferred.

[0120] Here, the first retraction speed for the label paper is the linear velocity of the label paper retracting along its extension direction. Similarly, the second retraction speed for the transfer media is the linear velocity of the transfer media retracting along its extension direction.

[0121] In some feasible implementations, the first retraction speed of the label paper is equal to the second retraction speed of the transfer media belt. In this case, the label paper and the transfer media belt move synchronously, in the same direction, and at the same speed during the retraction process. The retraction process of the label paper and the transfer media belt can be understood as the reverse process of the forward transport of the label paper and the transfer media belt during the printing process.

[0122] In some feasible implementations, the first retraction speed of the label paper is greater than the second retraction speed of the transfer media. In this case, the label paper and the transfer media move synchronously and in the same direction during the retraction process, with the label paper's movement speed exceeding that of the transfer media. This allows the label paper to be quickly retracted to the target complete transfer position. Because the first retraction speed is greater than the second, the distance the label paper retracts is greater than the distance the transfer media retracts. This means the label paper may be pulled out a considerable distance, necessitating synchronous retraction of both the label paper and the transfer media under motor drive.

[0123] In one embodiment provided in this application, after controlling the motor to drive the label paper back to the target complete transfer position in S104, the method further includes:

[0124] When the label printer is in printing mode, the roller assembly is in drive connection mode, and the control motor drives the label paper and the medium to be transferred to be conveyed in the forward direction.

[0125] The first forward conveying speed corresponding to the label paper is the same as the second forward conveying speed corresponding to the medium belt to be transferred.

[0126] When the label printer is in printing mode, it uses the transfer media belt to print on the label paper. The rubber roller assembly and motor are connected, ensuring the rubber roller assembly is in a driving state. The motor synchronously drives the rubber roller assembly, causing the label paper and the transfer media belt to move in the same direction. Furthermore, the rubber roller assembly and the heated printhead of the label printer press against each other, causing the label paper and the transfer media belt to come into contact under pressure. Simultaneously, the printhead of the label printer heats the transfer media belt to transfer a specific area of ​​the transfer media onto the label paper, thus completing the label printing process.

[0127] It is easy to understand that in order to ensure that the medium to be transferred on the transfer medium belt can be accurately transferred to the label paper, the first forward conveying speed of the label paper can be controlled to be the same as the second forward conveying speed of the transfer medium belt.

[0128] In one embodiment provided in this application, the label printer includes a first body and a second body. The first body is provided with a motor, and the second body is provided with a rubber roller assembly. The second body is also configured to cover the first body.

[0129] In step S102, before controlling the motor to drive the transfer medium belt to be forward-conveyed for a first preset length, after determining that the label printer is in a printing-ready state and the roller assembly is not in a transmission connection state, the following steps are also included:

[0130] When the second body is detected covering the first body and the label printer is not printing, it is determined that the label printer is in a ready-to-print state;

[0131] If it is detected that the rubber roller assembly is not connected to the motor drive, it is determined that the rubber roller assembly is not in a drive connection state.

[0132] The first component can be the main body or printer body of the label printer, and the second component can be the printer cover. When the second component is placed over the first component, the printer cover is placed over the main body or printer body of the label printer, and the label printer is in a ready-to-print state when it is not printing labels.

[0133] Furthermore, when it is detected that the rubber roller assembly is not connected to the motor drive, it is determined that the rubber roller assembly is not in a drive-connected state. Specifically, the rubber roller assembly includes a rubber roller and a rubber roller gear. The rubber roller gear is disposed on the rubber roller and is configured to be drive-connected to the motor, such as being able to mesh with the corresponding motor gear for drive connection. When the rubber roller gear meshes with the corresponding motor gear for drive connection, it is determined that the rubber roller assembly is in a drive-connected state; when the rubber roller gear does not mesh with the corresponding motor gear, it is determined that the rubber roller assembly is not in a drive-connected state.

[0134] The embodiments provided in this application determine that the label printer is in a ready-to-print state by detecting when the second body is covered by the first body and the label printer is not printing, and determine that the rubber roller assembly is not in a transmission connection state by detecting when the rubber roller assembly is not connected to the motor drive. This allows for the classification of the states of the label printer and the rubber roller assembly, so that corresponding printing preparation strategies and printing strategies can be adopted in a targeted manner.

[0135] In one embodiment provided in this application, the first body is further provided with a first lid-closing detection component, and the second body is further provided with a second lid-closing detection component.

[0136] Please refer to Figure 2, which is a flowchart illustrating the control of the motor in a label printer according to an embodiment of this application. In step S102, when it is determined that the label printer is in a printing-ready state and the roller assembly is not in a transmission connection state, controlling the motor to drive the transfer media belt forward to convey a first preset length includes:

[0137] S202: When it is determined that the label printer is in a ready-to-print state, the first cap-closing detection component and the second cap-closing detection component abut against each other to control the label printer to generate a first instruction.

[0138] When the label printer is in the printing standby state, the second body is placed on the first body. At this time, the first closing detection component on the first body and the second closing detection component on the second body abut against each other to generate a corresponding abutment electrical signal. After receiving the abutment electrical signal, the label printer determines that the second body is placed on the first body and then generates the first instruction.

[0139] In one feasible implementation, the first lid-closing detection component may include a protrusion, and the second lid-closing detection component may include a micro switch. When the second body is placed on the first body, the protrusion touches the micro switch to realize the lid-closing detection function.

[0140] In one feasible implementation, the first lid-closing detection component may include a micro switch, and the second lid-closing detection component may include a protrusion. When the second body is placed on the first body, the protrusion touches the micro switch to realize the lid-closing detection function.

[0141] S204: When it is determined that the rubber roller assembly is not in a drive connection state, a second instruction is generated based on the label printer.

[0142] The rubber roller assembly includes a rubber roller and a rubber roller gear. The rubber roller gear is mounted on the rubber roller and is configured to be connected to a motor for transmission. When the rubber roller gear meshes with the corresponding motor gear for transmission, the rubber roller assembly is determined to be in a transmission connection state. When the rubber roller gear is not meshed with the corresponding motor gear, the rubber roller assembly is determined to be in a non-transmission connection state. When the rubber roller assembly is determined to be in a non-transmission connection state, the label printer receives the status signal corresponding to this state and generates a second instruction based on this signal.

[0143] It should be understood that S202 and S204 can be performed simultaneously; or, S202 and S204 can be performed step by step, and the order of S202 and S204 is not restricted.

[0144] S206: Based on the first and second instructions, control the motor to drive the medium belt to be transferred to be conveyed forward to the first preset length.

[0145] After the label printer generates the first instruction and the second instruction, it indicates that the label printer is in a ready-to-print state and the roller assembly is not in a transmission connection state. The motor control instruction can be generated based on the first instruction and the second instruction. After receiving the motor control instruction, the motor drives the medium to be transferred to be conveyed forward to a first preset length.

[0146] In the embodiments provided in this application, the first instruction is set to indicate that the label printer is in a state of waiting to print, and the second instruction is set to indicate that the rubber roller assembly is not in a state of transmission connection. Therefore, after the label printer generates the first instruction and the second instruction, it indicates that the label printer is in a state of waiting to print and the rubber roller assembly is not in a state of transmission connection. Thus, based on the first instruction and the second instruction, the motor is controlled to drive the medium belt to be transferred to be conveyed forward to a first preset length.

[0147] In one embodiment provided in this application, the label printer includes a first body and a second body. The first body is provided with a motor, and the second body is provided with a rubber roller assembly. The second body is also configured to cover the first body.

[0148] In step S102, before controlling the motor to drive the transfer medium belt to be forward-conveyed for a first preset length, after determining that the label printer is in a printing-ready state and the roller assembly is not in a transmission connection state, the following steps are also included:

[0149] When it is detected that the second body is not covered by the first body, it is determined that the label printer is in a ready-to-print state and the rubber roller assembly is not in a drive connection state.

[0150] When the second body is not covered by the first body, the rubber roller assembly is not connected to the motor drive. Therefore, the rubber roller assembly is not in the drive connection state and cannot drive the label paper to move. At this time, the label printer is determined to be in the printing standby state.

[0151] In the embodiments provided in this application, when the second body is not covered by the first body, the rubber roller assembly is located on the second body and is therefore not connected to the motor drive. Thus, the rubber roller assembly is not in a drive-connected state, and because it is not connected to the motor drive, it cannot move the label paper. Therefore, the label printer is determined to be in a ready-to-print state.

[0152] In one embodiment provided in this application, the first body is further provided with a first lid-closing detection component, and the second body is further provided with a second lid-closing detection component.

[0153] Please refer to Figure 3, which is a schematic flowchart of another method for controlling the motor in a label printer according to an embodiment of this application. As shown in Figure 3, in step S102, when it is determined that the label printer is in a printing-ready state and the roller assembly is not in a transmission connection state, controlling the motor to drive the transfer medium belt to be conveyed forward for a first preset length includes:

[0154] S302: When it is determined that the first cover detection component and the second cover detection component are not in contact, the second body is not covered by the first body, and the label printer is controlled to generate a third instruction.

[0155] When the first cover detection component and the second cover detection component do not come into contact, the second body is not placed on the first body. At this time, the first cover detection component on the first body and the second cover detection component on the second body do not come into contact to generate a corresponding non-contact electrical signal. After receiving the non-contact electrical signal, the label printer can determine that the second body cover is not placed on the first body, thereby generating a third instruction.

[0156] In one feasible implementation, the first lid-closing detection component may include a protrusion, and the second lid-closing detection component may include a micro switch. When the second lid is not located on the first body, the protrusion does not touch the micro switch, thereby realizing the function of lid-opening detection.

[0157] In one feasible implementation, the first lid-closing detection component may include a micro switch, and the second lid-closing detection component may include a protrusion. When the second lid is not located on the first body, the protrusion does not touch the micro switch, thereby realizing the function of lid-opening detection.

[0158] S304: Based on the third instruction, control the motor to drive the medium belt to be transferred to be conveyed forward to the first preset length.

[0159] When the label printer generates the third instruction, it indicates that the label printer is in a ready-to-print state and the roller assembly is not in a transmission connection state. The motor control instruction can be generated based on the third instruction. After receiving the motor control instruction, the motor drives the medium to be transferred to be conveyed forward to the first preset length.

[0160] In the embodiments provided in this application, the third instruction is configured to indicate that the label printer is in a ready-to-print state and the rubber roller assembly is not in a drive-connected state. Therefore, after the label printer generates the third instruction, it indicates that the label printer is in a ready-to-print state and the rubber roller assembly is not in a drive-connected state, thereby controlling the motor to drive the transfer medium belt to be forward transported for a first preset length based on the third instruction.

[0161] In one embodiment provided in this application, the rubber roller assembly includes a rubber roller and a rubber roller gear, with the rubber roller gear disposed on the rubber roller.

[0162] Please refer to Figure 4, which is a flowchart illustrating another method for controlling the motor in a label printer according to an embodiment of this application. As shown in Figure 4, in step S104, when the roller assembly is in the transmission connection state, controlling the motor to drive the label paper back to the target complete transfer position includes:

[0163] S402: When the motor and the rubber roller are connected by gear transmission to make the rubber roller assembly in the transmission connection state, control the motor to drive the rubber roller assembly to move the label paper back.

[0164] The motor gear meshes with the rubber roller gear to create a transmission connection between the motor and the rubber roller gear. This transmission connection puts the rubber roller assembly in a transmission connection state, allowing the rubber roller gear to drive the rubber roller to rotate. Driven by the motor, the rubber roller gear rotates the rubber roller, which in turn causes the label paper to retract.

[0165] S404: When the label paper is detected to have retracted to the target complete transfer position, the control motor stops driving the glue roller assembly.

[0166] During the label paper retraction process, when the label paper is detected to have retracted to the target complete transfer position, the control motor stops driving the glue roller assembly. At this point, the glue rollers in the glue roller assembly stop rotating, and the label paper no longer moves.

[0167] When the label paper retracts to the target position for complete transfer, the unprinted label face sheets on the pulled-out label paper return to the printing position, effectively saving label face sheets. Furthermore, when printing the label at this point, the corresponding label face sheets can display complete printing information, thus preventing information omissions during printing.

[0168] In the embodiments provided in this application, when the motor is connected to the rubber roller gear transmission, the second body is covered on the first body. The motor can simultaneously drive the label paper and the medium to be transferred to retract. While controlling the motor to drive the label paper to retract to the target complete transfer position, the medium to be transferred is simultaneously driven to retract a second preset length. Furthermore, when the label paper is detected to have retracted to the target complete transfer position, the motor is controlled to stop driving the rubber roller assembly, thereby avoiding the label paper from retracting too far, which would make it difficult for the label printer to display complete printing information.

[0169] In one embodiment provided in this application, the label printer further includes a paper return detection component, which includes a label paper light transmittance detection unit. The paper return detection component is configured to detect the light transmittance threshold of the projection area corresponding to the light transmittance detection unit on the label paper.

[0170] Please refer to Figure 5, which is a flowchart illustrating a method for controlling the motor in a label printer based on a light transmittance threshold according to an embodiment of this application. As shown in Figure 5, in step S404, when the label paper is detected to have retracted to the target complete transfer position, the motor is controlled to stop driving the adhesive roller assembly, including:

[0171] S502: When the label paper is retracted, the light transmittance threshold of the corresponding projection area of ​​the light transmittance detection section on the label paper is detected based on the paper return detection component.

[0172] The paper return detection component includes a U-shaped light guide column and a light transmission detection unit. The light transmission detection unit includes a light emitter and a light receiver. The U-shaped light guide column is set on the first body, and the light emitter and light receiver are set on the second body. The light emitted by the light emitter passes through the label paper and enters the U-shaped light guide column on the first body. After passing through the U-shaped light guide column, the light passes through the label paper and enters the light receiver. After the light receiver receives the light, the label printer determines the light transmission threshold and then determines the position of the label paper return.

[0173] The projection area corresponding to the light transmission detection unit may include a first projection sub-area on the label paper for the emitting part corresponding to the light emitter and a second projection sub-area on the label paper for the receiving part corresponding to the light receiver.

[0174] It should be understood that since the label paper includes a label face paper area and a blank release paper area, and the label face paper area has additional label face paper pasted on it compared to the blank release paper area, the second light transmission threshold corresponding to the two penetrations of light through the label face paper area and the first light transmission threshold corresponding to the two penetrations of light through the blank release paper area are different.

[0175] Therefore, during the label paper retraction process, the light transmittance threshold of the projection area corresponding to the light transmittance detection section on the label paper can be monitored in real time based on the paper return detection component. The light transmittance threshold can be understood as the maximum light intensity reached after light is emitted from the light emitter, passes through the label paper, the U-shaped light guide column, and then enters the light receiver. Here, the line connecting the centers of the two extended end faces of the U-shaped light guide column is parallel to the width direction of the label paper.

[0176] S504: When the light transmittance threshold changes from the first preset light transmittance threshold to the second preset light transmittance threshold, determine that the label paper has returned to the target complete transfer position, and control the motor to stop driving the rubber roller assembly.

[0177] During the detection of the light transmittance threshold, when the light transmittance threshold changes from the first preset light transmittance threshold to the second preset light transmittance threshold, it indicates that the projected area on the label paper has moved from the label face paper area to the blank release paper area adjacent to the label face paper area. At this time, the label paper is driven back to the target complete transfer position, the motor is controlled to stop driving the rubber roller assembly to move the label paper back, and the motor also stops driving the transfer medium belt to move back.

[0178] In the embodiments provided in this application, by detecting the light transmittance threshold corresponding to the label paper, when the light transmittance threshold changes from the first preset light transmittance threshold to the second preset light transmittance threshold, it indicates that the label paper has retreated to the target complete transfer position, and at this time the motor can be controlled to stop driving the rubber roller assembly.

[0179] In one embodiment provided in this application, when the light transmittance threshold is determined to be a first preset light transmittance threshold, the projection area is located in the label face paper area of ​​the label paper;

[0180] When the light transmittance threshold is set to the second preset light transmittance threshold, the projection area is located in the blank release paper area adjacent to the label face paper area in the label paper.

[0181] Specifically, when the light transmittance threshold is within the first preset light transmittance range, the light transmittance threshold is determined as the first preset light transmittance threshold, and at this time, the projection area is located in the label face area of ​​the label paper. Here, the first preset light transmittance range can be predetermined. That is, it is the range of values ​​of the maximum transmitted light intensity reached after the light is emitted from the light emitter, passes through the label face area on the label paper, the U-shaped light guide column, and the label face area on the label paper before entering the light receiver.

[0182] When the light transmittance threshold is within the second preset light transmittance range, the light transmittance threshold is determined to be the second preset light transmittance threshold. At this time, the projection area is located in the label face paper area of ​​the label paper. Here, the second preset light transmittance range can be predetermined, that is, the range of maximum transmitted light intensity reached after the light is emitted from the light emitter, passes through the blank release paper area on the label paper, the U-shaped light guide column, and the blank release paper area on the label paper in sequence, and enters the light receiver.

[0183] Here, when the light transmittance of the label face paper area is greater than that of the blank release paper area, the first preset light transmittance threshold is greater than the second preset light transmittance threshold; when the light transmittance of the label face paper area is less than that of the blank release paper area, the first preset light transmittance threshold is less than the second preset light transmittance threshold. Therefore, based on the light transmittance of the label face paper area and the blank release paper area, the second preset light transmittance threshold is less than the first preset light transmittance threshold; or, the second preset light transmittance threshold is greater than the first preset light transmittance threshold.

[0184] In one embodiment provided in this application, after controlling the motor to drive the label paper back to the target complete transfer position in S104, the method further includes:

[0185] When the label printer is in the ready-to-print state and the rubber roller assembly is in the drive connection state, control the motor to drive the label paper to be fed forward for a third preset length;

[0186] The third preset length is the target length from the light transmission detection unit to the paper tearing component at the corresponding printing exit of the label printer.

[0187] After the label paper retracts to the target complete transfer position, it needs to move a pre-set target length to reach the target position. This ensures that the label face paper can display complete printing information when printing. At this point, the label printer is in a ready-to-print state, and the roller assembly is in a drive connection state. The motor is then controlled to drive the label paper forward for a third preset length. This third preset length is the target length from the light transmission detection unit to the tear-off assembly at the corresponding printing exit of the label printer. This delivers the corresponding blank release paper area to the tear-off assembly at the printing exit, achieving accurate adjustment of the label paper's position. When printing, the label face paper can display complete printing information, thus preventing information omissions during printing.

[0188] Here, when the motor drives the label paper to be conveyed forward for the third preset length, the third forward conveying speed of the label paper is the same as the fourth forward conveying speed of the media belt to be transferred. At this time, the label printer is not printing; this is the preparation stage before printing. It is easy to understand that when the motor drives the label paper to be conveyed forward for the third preset length, the motor is also simultaneously driving the media belt to be transferred in the same direction.

[0189] In one embodiment provided in this application, the label printer includes a first body, the first body is provided with a mounting cavity, the mounting cavity is configured to mount a media cartridge to be transferred, the media cartridge to be transferred includes a dispensing shaft, a take-up shaft and a torsion spring, the torsion spring is configured to provide a preload force to the media tape to be transferred when the dispensing shaft and the take-up shaft cooperate to forward convey the media tape to be transferred, so that the media tape to be transferred between the dispensing shaft and the take-up shaft is in a taut state;

[0190] The second preset length is less than the target conveying distance of the medium to be transferred when it changes from the first tension state to the second tension state.

[0191] The first tension state is the tension state corresponding to the initial tension of the transfer medium belt, and the second tension state is the tension state corresponding to the initial stable preload of the transfer medium belt.

[0192] During the label printer printing process, the dispensing shaft in the media cartridge is configured to feed the media tape to be transferred in the forward direction towards the return shaft, and the return shaft is configured to retrieve the media tape that has completed the transfer process. During the label printer's printing preparation phase, the dispensing shaft in the media cartridge is configured to either retract towards the return shaft or feed the media tape in the forward direction, and the return shaft is configured to retrieve or retract the media tape.

[0193] A torsion spring is installed on the media cartridge. When the media tape begins to be conveyed in the forward direction, the torsion spring and the media tape are just beginning to tighten, and the media tape is in the first tension state. As the media tape is conveyed in the forward direction, the torsion spring is gradually stretched, increasing its elasticity. At the same time, the preload of the media tape gradually increases until the media tape is conveyed in the forward direction to the second tension state. At this point, the torsion spring slips, and the preload of the media tape does not change. This ensures that the preload of the media tape remains at a stable value during the forward conveying process, thus avoiding the problem of poor media transfer effect caused by the loose media tape and effectively improving the printing effect of the label printer.

[0194] Please refer to Figure 6, which is a structural schematic diagram of a label printer provided in an embodiment of this application. Please refer to Figure 7, which is a structural schematic diagram of a transfer media cartridge provided in an embodiment of this application. As shown in Figures 6 and 7, the label printer 1000 includes a first body 1100 and a second body 1200.

[0195] The first body 1100 is equipped with a motor and a mounting cavity. The mounting cavity is configured to mount the dispensing shaft 1111 and the retracting shaft 1112. Driven by the motor, the dispensing shaft 1111 and the retracting shaft 1112 cooperate to forward convey or retract the medium belt to be transferred.

[0196] Specifically, the mounting cavity is configured to mount the media cartridge 1110 to be transferred, which includes a dispensing shaft 1111 and a retrieving shaft 1112. The mounting cavity is the space occupied by the media cartridge 1110 to be transferred in Figure 6.

[0197] The second body 1200 is connected to the first body 1100. The second body 1200 is provided with a rubber roller assembly 1210. When the rubber roller assembly 1210 is in the transmission connection state, the rubber roller assembly 1210 is connected to the motor to drive the label paper and the medium belt to be transferred to move in the same direction.

[0198] Specifically, the rubber roller assembly 1210 includes a rubber roller 1211 and a rubber roller gear 1212, with the rubber roller gear 1212 disposed on the rubber roller 1211.

[0199] In one embodiment provided in this application, the label printer 1000 further includes a paper return detection component, which includes a light transmission detection unit 1310. The paper return detection component is configured to detect the light transmission threshold of the projection area corresponding to the light transmission detection unit 1310 on the label paper. The light transmission detection unit 1310 includes a light emitter 1311 and a light receiver 1312. A U-shaped light guide column is disposed on the first body, and the light emitter 1311 and the light receiver 1312 are disposed on the second body 1200. The light emitted by the light emitter 1311 passes through the label paper and enters the receiving end 1313 of the U-shaped light guide column on the first body 1200. Then, the light passing through the emitting end 1314 of the U-shaped light guide column passes through the label paper and enters the light receiver 1312. After the light receiver 1312 receives the light, the label printer determines the light transmission threshold and thus determines the position of the label paper return.

[0200] Please refer to Figure 8, which is a structural schematic diagram of the cover of a transfer media cartridge according to an embodiment of this application. As shown in Figure 8, a torsion spring 1115 is also provided on the first protrusion 1114 of the transfer media cartridge cover 1113. The first protrusion 1114 of the transfer media cartridge cover 1113 is configured to extend into the dispensing shaft 1111, and the second protrusion 1116 of the transfer media cartridge cover 1113 is configured to extend into the retraction shaft 1112, so that under the drive of the motor, the dispensing shaft 1111 and the retraction shaft 1112 cooperate with each other to forward convey or retract the transfer media tape. Furthermore, when the media belt to be transferred begins to be conveyed in the forward direction, the dispensing shaft 1111 rotates, causing the torsion spring 1115 to begin to tighten, thereby providing a preload force to the media belt to be transferred in the opposite direction of forward conveying, and the media belt to be transferred is in the first tension state. When the media belt to be transferred is conveyed in the forward direction, the torsion spring 1115 is gradually stretched, increasing the elastic force, and at the same time, the preload force of the media belt to be transferred will gradually increase until the media belt to be transferred moves to the second tension state, at which point the torsion spring 1115 will slip, and the preload force of the media belt to be transferred will not change, thus maintaining a stable preload force during the forward conveying process, thereby avoiding the problem of poor transfer effect caused by the loosening of the media belt to be transferred, and effectively improving the printing effect of the label printer.

[0201] In addition, in one embodiment provided in this application, the first body 1100 is further provided with a first lid-closing detection component (not shown in the figure), and the second body 1200 is further provided with a second lid-closing detection component (not shown in the figure). The second body 1200 is also configured to cover the first body 1100. When the second body 1200 covers the first body 1100, the first lid-closing detection component and the second lid-closing detection component abut against each other.

[0202] In one feasible implementation, the first lid-closing detection component may include a protrusion, and the second lid-closing detection component may include a micro switch. When the second body 1200 is placed on the first body 1100, the protrusion touches the micro switch to realize the lid-closing detection function.

[0203] In one feasible implementation, the first lid-closing detection component may include a micro switch, and the second lid-closing detection component may include a protrusion. When the second body 1200 is placed on the first body 1100, the protrusion touches the micro switch to realize the lid-closing detection function.

[0204] In the field of printing technology, in order to perform consumable printing operations, the user needs to correctly place the transfer media cartridge 1110 inside the first body 1100 and then execute the printing task to meet basic printing needs. During the printing process, the transfer media tape and label paper are pressed between the rubber roller 1211 and the heated print head. The rubber roller 1211 moves the label paper, and the heated print head heats the transfer media tape, causing the transfer media on the transfer media tape to be transferred onto the label paper, thereby realizing printing.

[0205] However, in practical applications, label paper may produce blurry or unclear printed content during the printing process, reducing print quality.

[0206] The applicant discovered that part of the reason for the above problems is that there is a certain error between the speed of the transfer media tape and the speed of the label paper. When the speed of the transfer media tape and the speed of the label paper are inconsistent, the transfer media tape may become loose or wrinkled. In addition, it also causes relative slippage between the transfer media tape and the label paper, resulting in blurry printed content.

[0207] Please refer to Figures 9 to 12. In order to solve the above-mentioned technical problems, in one embodiment provided in this application, the label printer 1000 further includes a rubber roller drive wheel assembly 1400, a media belt drive shaft assembly 1500, and a media belt drive wheel assembly 1600.

[0208] In this embodiment, the rubber roller assembly 1210 is configured for mounting label paper, and the rubber roller drive wheel assembly 1400 is connected to the rubber roller assembly 1210; the transfer medium belt drive shaft assembly 1500 includes a transfer medium belt drive shaft assembly 1510 configured for mounting the transfer medium belt and a connector 1520, the connector 1520 is slidably connected to the transfer medium belt drive shaft assembly, and the transfer medium belt drive wheel assembly 1600 is connected to the connector 1520.

[0209] In this system, the first preset speed output by the drive shaft assembly 1510 of the transfer medium belt is V1, and the second preset speed output by the roller assembly 1210 is V2, where V1 > V2. When the transfer medium belt is in contact with the label paper, the roller drive wheel assembly 1400 drives the roller assembly 1210 to rotate, thereby causing the label paper to move along a preset direction at the second preset speed V2. The connector 1520 slides relative to the drive shaft assembly 1510 of the transfer medium belt to ensure that the transfer medium belt and the label paper move synchronously. At this time, the label paper moves along the preset direction, which is also known as forward conveying, and the second preset speed V2 is consistent with the first forward conveying speed mentioned above.

[0210] In this application, by setting the first preset speed V1 of the drive shaft assembly 1510 of the transfer medium tape to be greater than the second preset speed V2 of the roller assembly 1210 (i.e., V1>V2), and utilizing the sliding compensation of the connector 1520 when the transfer medium tape is bonded to the label paper, the actual movement speed of the transfer medium tape is dynamically adjusted through the sliding connection between the connector 1520 and the drive shaft assembly 1510 of the transfer medium tape. This allows the transfer medium tape to move synchronously with the label paper while maintaining a certain tension. Through the above-mentioned speed synchronization mechanism, the transfer medium tape and the label paper always maintain a tight bond, reducing the relative sliding between them and avoiding problems such as wrinkled transfer medium tape or poor printing effect caused by speed difference. In this application, the precise synchronization of the transfer medium tape and the label paper is achieved through active speed control and mechanical compensation structure, improving the stability of printing quality.

[0211] Specifically, when the transfer media belt and the label paper are not in contact, the rotational speed output by the roller drive wheel assembly 1400 is less than the rotational speed output by the transfer media belt drive wheel assembly 1600. Correspondingly, the rotational speed of the roller assembly 1210 driven by the roller drive wheel assembly 1400 is also less than the rotational speed of the transfer media belt drive shaft assembly 1510 driven by the transfer media belt drive wheel assembly 1600. Furthermore, when the transfer media belt and the label paper are not in contact, the connector 1520 is subjected to the transfer media belt drive wheel assembly 1600. The drive wheel assembly 1600 of the printing media belt can drive the rotation of the drive shaft assembly 1510 of the printing media belt to be transferred. It can be understood that although the connector 1520 is slidably connected to the drive shaft assembly 1510 of the printing media belt to be transferred, when the printing media belt to be transferred is unloaded (i.e. not pulled by the label paper), a certain static friction force is generated between the connector 1520 and the drive shaft assembly 1510 of the printing media belt to be transferred, thereby driving the shaft assembly 1510 of the printing media belt to be transferred to rotate at a first preset speed V1.

[0212] It should be noted that when the transfer media tape is attached to the label paper and the label printer 1000 is in operation, the heated print head and the rubber roller assembly 1210 are tightly attached, which is set to tightly clamp the transfer media tape and the label paper to ensure that the transfer media tape can smoothly print toner onto the label paper. At this time, due to the large clamping force, the transfer media tape and the label paper no longer move relative to each other between the clamping parts. The clamping force on the transfer media tape is much greater than the static friction force between the transfer media tape drive shaft assembly 1510 and the connector 1520. At this time, the transfer media tape drive shaft assembly 1510 rotates relative to the connector 1520, that is, the connector 1520 can slide relative to the transfer media tape drive shaft assembly 1510. Without affecting the transfer media tape drive wheel assembly 1600, it is ensured that the transfer media tape can run at the same speed as the label paper, that is, both the label paper and the transfer media tape rotate at the second preset speed V2.

[0213] Furthermore, in this application, V1>V2. In some embodiments, the transfer media belt drive shaft assembly 1510 is connected to the recycle shaft 1112 of the transfer media cartridge 1110. The recycle shaft 1112 is configured to recycle the used transfer media belt and rotates at a relatively large first preset speed. This facilitates the winding of the used transfer media belt before it is in contact with the label paper, reducing the problem of poor initial printing quality caused by the label paper being in contact with the used transfer media belt due to the slow rotation speed of the transfer media belt drive shaft assembly 1510. Setting V1>V2 ensures that the label printer 1000 can still print the label paper normally even in the initial printing state, reducing the waste of label paper.

[0214] Furthermore, regarding the ratio of the first preset speed V1 and the second preset speed V2, in some embodiments of this application, V1 / V2 is configured as: 1 < V1 / V2 ≤ 2. It can be understood that the ratio of the first preset speed and the second preset speed is within the range of 1 to 2. When the value of V1 / V2 is close to 1, 1 is the lower limit of the ratio, ensuring that the speed of the drive shaft assembly 1510 of the transfer medium belt is slightly greater than the speed of the rubber roller assembly 1210, thereby generating a certain tension when the transfer medium belt is bonded to the label paper, ensuring the tension of the transfer medium belt. When the value of V1 / V2 is close to 2, the output speed of the drive shaft assembly 1510 of the transfer medium belt is relatively large, limiting the speed of the transfer medium belt to be too high, preventing the transfer medium belt from being over-tensioned due to the excessive speed difference between the transfer medium belt and the label paper, thus preventing breakage.

[0215] It is understandable that when 1 < V1 / V2 ≤ 2, it can be ensured that the media tape to be transferred is always in a moderate tension state, ensuring the synchronization accuracy of the media tape to be transferred and the label paper.

[0216] In the embodiments of this application, the values ​​of V1 / V2 include 1.2, 1.4, 1.6, 1.8, etc. This application does not limit these values, as long as they are within the above range.

[0217] Referring to Figures 11 to 13, the label printer 1000 also includes a media cartridge 1110 for transfer. The media cartridge 1110 includes a media tape shaft 1117 configured for winding the media tape for transfer. The media tape shaft 1117 is coaxially mounted on the media tape drive shaft assembly 1510 for transfer. The connector 1520 includes a first connecting section 1521 and a second connecting section 1522. The first connecting section 1521 is connected to the media tape drive wheel assembly 1600 for transfer. The second connecting section 1522 is connected to the first connecting section 1521. The second connecting section 1522 is circumferentially mounted on the media tape drive shaft assembly 1510 for transfer around the media tape shaft 1117 for transfer. So that when the media tape for transfer is in contact with the label paper, the second connecting section 1522 can slide relative to the media tape drive shaft assembly 1510 for transfer around the media tape shaft 1117 for transfer.

[0218] In the embodiments of this application, the first connecting segment 1521 and the drive wheel assembly 1600 of the medium to be transferred are fixedly connected to transmit the rotation of the drive wheel assembly 1600 to the second connecting segment 1522. The second connecting segment 1522 is connected to the first connecting segment 1521, and the second connecting segment 1522 and the drive shaft assembly 1510 of the medium to be transferred are slidably connected. It should be noted that when the medium to be transferred is unloaded, there is a certain amount of static friction between the second connecting segment 1522 and the drive shaft assembly 1510 of the medium to be transferred. The second connecting section 1522 surrounds the drive shaft assembly 1510 of the media belt to be transferred, driving the rotation of the drive shaft assembly 1510. The media belt to be transferred is in contact with the label paper, and both rotate synchronously. At this time, the media belt to be transferred is subjected to the clamping force of the roller assembly 1210 and the heated printhead. This clamping force is greater than the static friction between the second connecting section 1522 and the drive shaft assembly 1510, resulting in relative sliding between them. This allows for synchronous movement between the media belt to be transferred and the label paper without affecting the rotation of the drive wheel assembly 1600.

[0219] Further, referring to Figures 12 and 13, the transfer medium belt drive shaft assembly 1510 is disposed on one side of the transfer medium belt drive wheel assembly 1600 along the axial direction of the transfer medium belt shaft 1117; the transfer medium belt drive wheel assembly 1600 has a slot 1621, and the first connecting section 1521 extends from the second connecting section 1522 to at least partially extend into the slot 1621 and is hooked onto the transfer medium belt drive wheel assembly 1600.

[0220] It is understood that the first connecting segment 1521 extends in a direction away from the second connecting segment 1522 (i.e., along the axial direction of the shaft 1117 of the medium to be transferred, or along the axial direction of the drive wheel assembly 1600 of the medium to be transferred) to approach the drive wheel assembly 1600 of the medium to be transferred. The drive wheel assembly 1600 of the medium to be transferred has a groove 1621 that mates with the first connecting segment 1521. A portion of the first connecting segment 1521 extends into the groove 1621. When the drive wheel assembly 1600 of the medium to be transferred rotates, the groove 1621 rotates, and the inner wall of the groove 1621 fits against the first connecting segment 1521, thereby driving the rotation of the first connecting segment 1521 and realizing the driving of the first connecting segment 1521.

[0221] In some embodiments, the first connecting segment 1521 includes a hook, a connecting rod, etc. This application is not limited to any particular type, as long as it can be inserted and mated with the slot 1621.

[0222] Correspondingly, the first connecting segment 1521 in this application has a simple structure and is plugged into the drive wheel assembly 1600 of the medium to be transferred, which reduces the assembly difficulty.

[0223] In some embodiments, referring to FIG15, the drive shaft assembly 1510 for the transfer medium tape has an annular groove 1513a, and a second connecting segment 1522 is disposed in the annular groove 1513a. In the axial direction of the transfer medium tape shaft 1117, the second connecting segment 1522 contacts the wall surface of the drive shaft assembly 1510 defining the annular groove 1513a, thereby defining the position of the second connecting segment 1522 along the axial direction of the transfer medium tape shaft 1117. It can be understood that the annular groove 1513a is configured to mount the second connecting segment 1522. On the one hand, the annular groove 1513a defines the position of the second connecting segment 1522 along the axis of the transfer medium tape shaft 1117 assembly, ensuring that the second connecting segment 1522 will not easily disengage when rotating relative to the drive shaft assembly 1510. On the other hand, the annular groove 1513a provides rotational space for the second connecting segment 1522, providing a stable sliding track for its circumferential sliding.

[0224] By setting the annular groove 1513a, the second connecting section 1522 is installed and fitted, which takes into account the installation stability of the connector 1520 and the reliability of the sliding process. Moreover, no additional fixing device or complex mechanical structure is required. The overall setup is relatively simple and easy to assemble.

[0225] Optionally, the first connecting segment 1521 and the second connecting segment 1522 are integrally formed, with the second connecting segment 1522 spirally wound around the drive shaft assembly 1510 of the medium to be transferred, and the second connecting segment 1522 making at least two turns. It should be noted that the first connecting segment 1521 and the second connecting segment 1522 are integrally formed, thereby simplifying the connection process between components and ensuring that the connector 1520 has good overall strength and high reliability.

[0226] Furthermore, the second connecting segment 1522 is wound around the shaft 1117 of the medium to be transferred in a spiral winding manner, with no less than two turns. This increases the contact area between the second connecting segment 1522 and the drive shaft 1510 of the medium to be transferred, thereby increasing the friction between them. This ensures that the medium to be transferred can rotate relative to the drive shaft 1510 when the medium to be transferred is unloaded, and rotates relative to the drive shaft 1510 when the medium to be transferred and the label paper are in contact.

[0227] Referring to Figures 14, 15, and 16, the label printer 1000 also includes a main body 1710 and a support rod 1720, with the support rod 1720 mounted on the main body 1710. The media belt drive shaft assembly 1510 includes: a fixed shaft 1511, coaxially sleeved on the outer periphery of the support rod 1720 and rotatably mounted on the support rod 1720; a media belt drive shaft 1512, configured for mounting the media belt and mounted on one end of the fixed shaft 1511; and a sleeve 1513, connected to the other end of the fixed shaft 1511 and the connector 1520, respectively.

[0228] The main body 1710 is configured to support the support rod 1720 and other components (such as the drive wheel set 1600 of the medium to be transferred and the drive wheel set 1400 of the rubber roller, etc.). The support rod 1720 is installed on the main body 1710 and fixed relative to the main body 1710, thereby providing a stable foundation for the installation of the fixed shaft 1511.

[0229] The fixed shaft 1511 is rotatably mounted relative to the support rod 1720, and the two ends of the fixed shaft 1511 along its axial direction are respectively connected to the drive shaft 1512 of the medium belt to be transferred and the sleeve 1513. The sleeve 1513 is located on the side close to the drive wheel assembly 1600 of the medium belt to be transferred, and the sleeve 1513 is connected to the connector 1520. In this embodiment, the rotation of the sleeve 1513 drives the rotation of the fixed shaft 1511, and the fixed shaft 1511 further drives the drive shaft 1512 of the medium belt to be transferred connected to it to rotate.

[0230] In this application, the connector 1520 and the sleeve 1513 are slidably connected. On the one hand, this provides installation space for the connector 1520, which facilitates the installation of the connector 1520 and the drive shaft assembly 1510 of the medium to be transferred, and enables the connector 1520 to directly drive the rotation of the sleeve 1513. On the other hand, the sleeve 1513 isolates the fixed shaft 1511 and the connector 1520, thus avoiding wear of the fixed shaft 1511 by the connector 1520.

[0231] Furthermore, the transfer media belt drive shaft assembly 1510 also includes a one-way bearing 1514. The transfer media belt drive shaft 1512 is connected to the other end of the fixed shaft 1511 through the one-way bearing 1514, and the transfer media belt drive shaft 1512 is sleeved on the outer periphery of the support rod 1720, the sleeve 1513 and the one-way bearing 1514. The one-way bearing 1514 is configured to limit the position of the transfer media belt drive shaft 1512 relative to the fixed shaft 1511 when the transfer media belt has a tendency to move in a preset direction. The one-way bearing 1514 is also configured to allow the transfer media belt drive shaft 1512 to rotate axially around the one-way bearing 1514 relative to the fixed shaft 1511 when the transfer media belt has a tendency to move in the opposite direction of the preset direction (that is, the printable media has a tendency to retract).

[0232] In normal printing mode, the media belt to be transferred moves along a preset direction. At this time, the media belt drive shaft assembly 1510 and the media belt drive wheel assembly 1600 both rotate in the forward direction. At this time, the one-way bearing 1514 is locked relative to the fixed shaft 1511 so that when the fixed shaft 1511 rotates, it drives the one-way bearing 1514 to rotate, so as to realize the movement of the media belt to be transferred along the preset direction.

[0233] In the initial stage of label printing, to avoid wasting the first sheet, the label printer 1000 drives the rubber roller assembly 1210 to rotate in reverse, thereby driving the label paper back. Since the transfer media belt drive wheel assembly 1600 and the rubber roller drive wheel assembly 1400 are coupled, the transfer media belt drive wheel assembly 1600 also drives the connecting member 1520 to rotate in reverse. In some embodiments, the transfer media belt drive shaft 1512 is connected to the return shaft 1112 of the transfer media cartridge 1110. In the reverse rotation state, the one-way bearing 1514 can relatively... When the fixed shaft 1511 rotates, the one-way bearing 1514 is connected to the drive shaft 1512 of the media belt to be transferred. The drive shaft 1512 of the media belt to be transferred is driven in the opposite direction by the media belt to be transferred, and has a small stroke that moves in the opposite direction with the label paper. At this time, the one-way bearing 1514 is not subject to the reverse drive force of the drive wheel assembly 1600 of the media belt to be transferred, but is only subject to the reverse drive force from the media belt to be transferred. Therefore, it will not unwind a large amount of the used media belt to be transferred, which makes it easier to quickly maintain the tension of the media belt to be transferred after subsequent forward printing.

[0234] Referring to Figure 15, one of the outer wall surface of the one-way bearing 1514 and the inner wall surface of the drive shaft 1512 for the transfer media belt are provided with a limiting groove 1514a and a limiting protrusion 1512a, respectively. The limiting groove 1514a extends axially along the one-way bearing 1514, and the limiting protrusion 1512a is disposed within the limiting groove 1514a to limit the position of the drive shaft 1512 for the transfer media belt relative to the one-way bearing 1514 in the circumferential direction of the one-way bearing 1514. The one-way bearing 1514 allows the drive shaft 1512 for the transfer media belt to rotate freely in the forward direction, while restricting its rotation in the reverse direction. This ensures that the drive system for the transfer media belt can operate stably in the preset direction during printing, avoiding mechanical failures or printing problems caused by reverse forces.

[0235] Furthermore, the synchronous rotation between the one-way bearing 1514 and the drive shaft 1512 of the printing medium belt is achieved through the cooperation of the limiting protrusion 1512a and the limiting groove 1514a, ensuring that there is no delay in the rotation between the two, and the installation method is simple and can achieve quick assembly and disassembly.

[0236] Correspondingly, one of the sleeve 1513 and the fixed shaft 1511 has a polygonal cylindrical segment, and the other has a polygonal cylindrical groove. The polygonal cylindrical segment is inserted into the polygonal cylindrical groove to define the position of the sleeve 1513 relative to the fixed shaft 1511 around the fixed shaft 1511. In this embodiment, by utilizing the non-rotational symmetry characteristics of the polygonal cross-section, the circumferential locking of the sleeve 1513 and the fixed shaft 1511 is achieved, ensuring synchronous rotation between the sleeve 1513 and the fixed shaft 1511. Furthermore, the plug-in connection method makes the connection between the sleeve 1513 and the fixed shaft 1511 more robust and reliable, effectively resisting the influence of external vibration or impact. At the same time, the plug-in design of the polygonal cylindrical segment and the polygonal cylindrical groove eliminates the need for additional fasteners or complex assembly steps, simplifying the assembly process and further improving assembly efficiency.

[0237] Referring to Figures 11, 15, and 16, the label printer 1000 further includes a media cartridge 1110 for transfer, which includes a media tape shaft 1117 configured for winding the media tape. The media tape drive shaft assembly 1510 includes a media tape drive shaft 1512, and the media tape shaft 1117 is coaxially mounted on the media tape drive shaft 1512. The outer wall of the media tape drive shaft 1512 is provided with at least one first ratchet 1512b, and the inner wall of the media tape shaft 1117 is provided with at least one second ratchet. The rotation of the media tape drive shaft 1512 causes the first ratchet 1512b and the second ratchet to abut against each other, thereby driving the media tape shaft 1117 to rotate about the axial direction of the media tape shaft 1117. In some embodiments of this application, during actual operation, the rotation of the drive shaft 1512 of the transfer medium belt can drive the rotation of the first ratchet 1512b. The rotation of the first ratchet 1512b abuts against the second ratchet, driving the rotation of the second ratchet and the shaft 1117 of the transfer medium belt connected to the second ratchet. The engagement between the first ratchet 1512b and the second ratchet allows the drive shaft 1512 of the transfer medium belt to directly drive the rotation of the shaft 1117 of the transfer medium belt.

[0238] Furthermore, since there is no locking mechanism between the first ratchet 1512b and the second ratchet along the axial direction of the transfer media belt shaft 1117, the transfer media belt shaft 1117 can be quickly installed or disengaged from the transfer media belt drive shaft 1512, ensuring that the transfer media box 1110 can be quickly installed and disassembled.

[0239] In some embodiments, referring to FIG11, the transfer media tape drive shaft assembly 1510 includes a transfer media tape drive shaft 1512; the label printer 1000 also includes a transfer media cartridge 1110, which includes two transfer media tape shafts 1117 configured for winding the transfer media tape, one of which is a take-up shaft 1112, and the take-up shaft 1112 is coaxially mounted to the transfer media tape drive shaft 1512.

[0240] The media cartridge 1110 is equipped with two media belt shafts 1117, one of which is a retraction shaft 1112 and the other is a dispensing shaft 1111. This separates the supply and recycling functions of the media belt, ensuring stable delivery and recycling of the media belt throughout the printing process. Furthermore, the retraction shaft 1112 is coaxially mounted to the media belt drive shaft 1512, ensuring that the retraction shaft 1112 and the media belt drive shaft 1512 maintain precise concentricity during mechanical transmission, reducing energy loss and motion deviation. At the same time, the rotation of the media belt drive shaft 1512 can directly drive the rotation of the retraction shaft 1112, thereby achieving efficient recycling of the media belt.

[0241] Referring to Figure 17, the roller drive wheel assembly 1400 is in contact with the media belt drive wheel assembly 1600. The label printer 1000 also includes a motor 1730, which is connected to either the media belt drive wheel assembly 1600 or the roller drive wheel assembly 1400 to drive both the roller drive wheel assembly 1400 and the media belt drive wheel assembly 1600. In the embodiments of this application, there is only one motor 1730. Through the coupling of the media belt drive wheel assembly 1600 and the roller drive wheel assembly 1400, a single motor synchronously drives both the media belt drive wheel assembly 1600 and the roller drive wheel assembly 1400, improving the overall power transmission efficiency. Furthermore, the single-motor drive simplifies the complex multi-stage transmission mechanism, thereby simplifying the overall structure.

[0242] In addition, the contact transmission method enables the rubber roller drive wheel assembly 1400 and the media belt drive wheel assembly 1600 to maintain higher synchronization during movement, so that the speed matching between the label paper and the media belt is more accurate, avoiding wrinkled tape or printing quality problems caused by speed difference.

[0243] Optionally, the rubber roller drive wheel assembly 1400 includes a first rubber roller drive gear 1411 and a second rubber roller drive gear 1412 that mesh with each other. The first rubber roller drive gear 1411 is connected to the motor 1730. The media belt drive wheel assembly 1600 includes a first media belt drive gear 1610 and a second media belt drive gear 1620 that mesh with each other. The first media belt drive gear 1610 and the second rubber roller drive gear 1412 mesh with each other. The second media belt drive gear 1620 is connected to the connector 1520 to drive the connector 1520 to move.

[0244] Through the meshing of the first rubber roller drive gear 1411 and the second rubber roller drive gear 1412, the power of the motor 1730 is transmitted to the rubber roller assembly 1210. Through the meshing of the first printing medium belt drive gear 1610 and the second rubber roller drive gear 1412, the power of the rubber roller drive wheel assembly 1400 is transmitted to the printing medium belt drive wheel assembly 1600. The multi-stage gear transmission improves the overall power transmission efficiency and ensures the motion synchronization between the rubber roller drive wheel assembly 1400 and the printing medium belt drive wheel assembly 1600. Furthermore, the direct meshing of the second rubber roller drive gear 1412 and the first printing medium belt drive gear 1610 establishes a rigid speed ratio relationship between the rubber roller assembly 1210 and the printing medium belt drive shaft assembly 1510, thereby establishing a sensorless mechanical speed synchronization mechanism and improving the system robustness.

[0245] Furthermore, the second roller drive gear 1412 is connected to the roller assembly 1210 and can drive the roller assembly 1210 to rotate; wherein, the diameter of the second roller drive gear 1412 is larger than the diameter of the second transfer medium belt drive gear 1620, so that the first preset speed V1 of the transfer medium belt drive shaft assembly 1510 driving the transfer medium belt to move is greater than the second preset speed V2 of the roller assembly 1210 driving the label paper to move.

[0246] In this embodiment, by setting the diameter of the second roller drive gear 1412 to be larger than the diameter of the second transfer media belt drive gear 1620, the speed relationship V1>V2 is achieved by utilizing the gear transmission ratio. This ensures that the actual movement speed of the transfer media belt is slightly higher than the speed of the label paper, thereby maintaining appropriate tension during the printing process and avoiding loosening or wrinkling of the transfer media belt. Furthermore, by using the difference in gear diameter, the speed ratio between the first preset speed of the transfer media belt and the second preset speed of the label paper is determined only by the gear size, rather than being controlled separately by the electronic control system. This reduces the risk of speed regulation circuit failure and ensures that the speed ratio between the two is constant and reliable.

[0247] In addition, the first body 1100 includes a mounting cavity and a mounting opening communicating with the mounting cavity. The mounting opening is configured to feed label paper. The rubber roller drive wheel assembly 1400 and the media belt drive wheel assembly 1600 are both installed in the mounting cavity. The first body 1100 also includes a second body 1200, which is coverably mounted on the first body 1100. The rubber roller assembly 1210 is connected to the second body 1200. During the process of the second body 1200 covering the first body 1100, the label paper gradually comes into contact with the media belt to be transferred, and the rubber roller drive wheel assembly 1400 and the rubber roller assembly 1210 are coupled so that the rubber roller drive wheel assembly 1400 can drive the rubber roller assembly 1210 to rotate and dispense the label paper.

[0248] In this application, please refer to FIG9. The first body 1100 includes a mounting cavity and a mounting opening communicating with the mounting cavity. The mounting cavity is configured to provide mounting space for other components inside the label printer 1000, while the mounting opening is configured to allow the label paper to feed, so that the label paper can extend out of the first body 1100 after printing, thereby ensuring that the rubber roller drive wheel assembly 1400 and the media belt drive wheel assembly 1600 have independent mounting space, and also ensuring that the label paper can enter and exit smoothly.

[0249] It is understood that, in the embodiments of this application, the customer can simultaneously achieve the bonding of the label paper and the medium to be transferred, and the coupling of the rubber roller drive wheel group 1400 and the rubber roller assembly 1210 by covering the second body 1200, thereby effectively reducing operation steps and improving the user experience.

[0250] Please refer to Figure 18, which is a schematic diagram of the structure of a control device for a label printer provided in an embodiment of this application. As shown in Figure 18, the control device 900 for the label printer includes:

[0251] The first control module 910 is adapted to control the motor to drive the transfer medium belt to be conveyed forward for a first preset length when the label printer is in the printing state and the rubber roller assembly is not in the transmission connection state.

[0252] The second control module 920 is adapted to control the motor to drive the label paper back to the target complete transfer position when the rubber roller assembly is in the transmission connection state, so that the medium to be transferred is retracted by a second preset length; wherein the second preset length is less than or equal to the first preset length.

[0253] Optionally, when the control motor drives the label paper to retract to the target complete transfer position, the first retraction speed of the label paper is greater than or equal to the second retraction speed of the transfer medium.

[0254] Optionally, the control unit 900 of the label printer also includes:

[0255] The determination module is suitable for determining that when the label printer is in the printing state, the rubber roller assembly is in the transmission connection state, and controlling the motor to drive the label paper and the medium to be transferred to be conveyed in the forward direction.

[0256] The first forward conveying speed corresponding to the label paper is the same as the second forward conveying speed corresponding to the medium belt to be transferred.

[0257] Optionally, the label printer includes a first body and a second body, the first body is provided with a motor, the second body is provided with a rubber roller assembly, and the second body is also configured to cover the first body;

[0258] The control unit 900 for the label printer also includes:

[0259] The first detection module is adapted to determine that the label printer is in a ready-to-print state when it detects that the second body is covered by the first body and the label printer is not printing.

[0260] The second detection module is adapted to determine that the rubber roller assembly is not in a drive connection state when it detects that the rubber roller assembly is not connected to the motor drive.

[0261] Optionally, the first body is further provided with a first lid-closing detection component, and the second body is further provided with a second lid-closing detection component;

[0262] The first control module 910 includes:

[0263] The first instruction generation unit is adapted to determine that when the label printer is in a ready-to-print state, the first cap-closing detection component and the second cap-closing detection component abut against each other to control the label printer to generate a first instruction.

[0264] The second instruction generation unit is adapted to generate a second instruction based on the label printer when it is determined that the rubber roller assembly is not in a transmission connection state.

[0265] The drive unit is adapted to control the motor to drive the transfer medium belt to be conveyed forward for a first preset length based on the first instruction and the second instruction.

[0266] Optionally, the label printer includes a first body and a second body, the first body is provided with a motor, the second body is provided with a rubber roller assembly, and the second body is also configured to cover the first body;

[0267] The control unit 900 for the label printer also includes:

[0268] The status determination module is adapted to determine that the label printer is in a ready-to-print state and the rubber roller assembly is not in a transmission connection state when it detects that the second body is not covered by the first body.

[0269] Optionally, the first body is further provided with a first lid-closing detection component, and the second body is further provided with a second lid-closing detection component;

[0270] The first control module 910 includes:

[0271] The third instruction generation unit is adapted to determine that when the first cover detection component and the second cover detection component are not in contact, the second body is not covered on the first body, and controls the label printer to generate a third instruction.

[0272] The drive conveyor unit is adapted to control the motor based on a third command to drive the medium belt to be transferred to be conveyed forward for a first preset length.

[0273] Optionally, the rubber roller assembly includes a rubber roller and a rubber roller gear, with the rubber roller gear disposed on the rubber roller;

[0274] The second control module 920 includes:

[0275] The retraction unit is suitable for controlling the motor to drive the rubber roller assembly to retract the label paper when the motor and the rubber roller are connected by gear transmission so that the rubber roller assembly is in the transmission connection state.

[0276] The stop drive unit is adapted to control the motor to stop driving the rubber roller assembly when the label paper is detected to have retracted to the target complete transfer position.

[0277] Optionally, the label printer also includes a paper return detection component, which includes a label paper light transmittance detection unit. The paper return detection component is configured to detect the light transmittance threshold of the projection area corresponding to the light transmittance detection unit on the label paper.

[0278] The stop drive unit includes:

[0279] The light transmittance threshold detection subunit is suitable for detecting the light transmittance threshold of the corresponding projection area of ​​the light transmittance detection part on the label paper based on the paper return detection component when the label paper is retracted.

[0280] The control drive subunit is adapted to determine when the light transmittance threshold changes from the first preset light transmittance threshold to the second preset light transmittance threshold, and control the motor to stop driving the rubber roller assembly.

[0281] Optionally, the control unit 900 of the label printer also includes:

[0282] The first position determination module is adapted to determine that when the light transmission threshold is the first preset light transmission threshold, the projection area is located in the label face paper area of ​​the label paper.

[0283] The second position determination module is adapted to determine that when the light transmission threshold is the second preset light transmission threshold, the projection area is located in the blank release paper area adjacent to the label face paper area in the label paper.

[0284] Optionally, the second preset light transmittance threshold is less than the first preset light transmittance threshold; or, the second preset light transmittance threshold is greater than the first preset light transmittance threshold.

[0285] Optionally, the control unit 900 of the label printer also includes:

[0286] The forward conveying module is suitable for controlling the motor to drive the label paper forward to convey a third preset length when the label printer is in the ready-to-print state and the rubber roller assembly is in the drive connection state.

[0287] The third preset length is the target length from the light transmission detection unit to the paper tearing component at the corresponding printing exit of the label printer.

[0288] Optionally, when controlling the motor to drive the label paper to be conveyed forward for a third preset length, the third forward conveying speed of the label paper is the same as the fourth forward conveying speed of the medium to be transferred.

[0289] Optionally, the label printer includes a first body, the first body being provided with a mounting cavity, the mounting cavity being configured to mount a media cartridge to be transferred, the media cartridge to be transferred including a dispensing shaft, a take-up shaft and a torsion spring, the torsion spring being configured to provide pre-tension force to the media tape to be transferred when the dispensing shaft and the take-up shaft cooperate to forward convey the media tape to be transferred, so that the media tape to be transferred between the dispensing shaft and the take-up shaft is in a taut state;

[0290] The second preset length is less than the target conveying distance of the medium to be transferred when it changes from the first tension state to the second tension state.

[0291] The first tension state is the tension state corresponding to the initial tension of the transfer medium belt, and the second tension state is the tension state corresponding to the initial stable preload of the transfer medium belt.

[0292] In the embodiments provided in this application, a computer-readable storage medium is also provided, which stores one or more programs that, when executed by a processor, implement the method of any of the above embodiments.

[0293] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0294] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0295] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0296] If the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application embodiment, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0297] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of this application are not limited to the described order of actions, because according to the embodiments of this application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the embodiments of this application.

[0298] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0299] The above is a description of a label printer, a label printer control method, and a device provided in the embodiments of this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation on the embodiments of this application.

[0300] The embodiments described above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Any modifications and improvements made by those skilled in the art to the technical solutions of this application without departing from the spirit of this application should fall within the protection scope defined by the claims of this application.

Claims

1. A control method for a label printer, wherein, The method includes: When the label printer is in the printing state and the rubber roller assembly is not in the transmission connection state, the motor and the rubber roller assembly are not yet in the transmission connection state. The motor is controlled to drive the transfer medium belt to be conveyed forward for a first preset length. When the transfer medium belt is conveyed forward for a first preset length, the label paper corresponding to the rubber roller assembly does not move. When the roller assembly is in the transmission connection state, the roller assembly is connected to the motor. The motor drives the roller assembly to move the label paper and the medium belt to be transferred in the same direction. The motor controls the label paper to retract to the target complete transfer position so that the medium belt to be transferred retracts by a second preset length. The second preset length is less than or equal to the first preset length.

2. The control method according to claim 1, wherein, The method further includes: When controlling the motor to drive the label paper back to the target complete transfer position, the first back speed of the label paper is greater than or equal to the second back speed of the medium tape to be transferred.

3. The control method according to claim 1, wherein, After controlling the motor to drive the label paper back to the target complete transfer position, the method further includes: When the label printer is in the printing state, the roller assembly is in the transmission connection state, and the motor is controlled to drive the label paper and the medium to be transferred to be conveyed in the forward direction. The first forward conveying speed corresponding to the label paper is the same as the second forward conveying speed corresponding to the medium tape to be transferred.

4. The control method according to claim 1, wherein, The label printer includes a first body and a second body. The first body is equipped with the motor, and the second body is equipped with the rubber roller assembly. The second body is also configured to cover the first body. Before determining that the label printer is in a printing-ready state and the roller assembly is not in a transmission connection state, and before controlling the motor to drive the transfer medium belt to be conveyed forward for a first preset length, the process further includes: When the second body is detected covering the first body and the label printer is not printing, it is determined that the label printer is in a ready-to-print state; When it is detected that the rubber roller assembly is not connected to the motor drive, it is determined that the rubber roller assembly is not in a drive connection state.

5. The control method according to claim 4, wherein, The first body is also provided with a first lid-closing detection component, and the second body is also provided with a second lid-closing detection component; When the label printer is determined to be in a printing-ready state and the roller assembly is not in a transmission connection state, the motor and roller assembly are not yet in a transmission connection state. Controlling the motor to drive the transfer media belt to be conveyed forward for a first preset length includes: When the label printer is determined to be in a ready-to-print state, the first cap-closing detection component and the second cap-closing detection component abut against each other to control the label printer to generate a first instruction; When it is determined that the rubber roller assembly is not in a drive connection state, a second instruction is generated based on the label printer; Based on the first instruction and the second instruction, the motor is controlled to drive the medium belt to be transferred to be conveyed forward to the first preset length.

6. The control method according to claim 1, wherein, The label printer includes a first body and a second body. The first body is equipped with the motor, and the second body is equipped with the rubber roller assembly. The second body is also configured to cover the first body. Before determining that the label printer is in a printing-ready state and the roller assembly is not in a transmission connection state, and before controlling the motor to drive the transfer medium belt to be conveyed forward for a first preset length, the process further includes: When it is detected that the second body is not covered by the first body, it is determined that the label printer is in a ready-to-print state and the rubber roller assembly is not in a transmission connection state.

7. The control method according to claim 6, wherein, The first body is also provided with a first lid-closing detection component, and the second body is also provided with a second lid-closing detection component; When the label printer is determined to be in a printing-ready state and the roller assembly is not in a transmission connection state, the motor and roller assembly are not yet in a transmission connection state. Controlling the motor to drive the transfer media belt to be conveyed forward for a first preset length includes: When it is determined that the first cover detection component and the second cover detection component are not in contact, the second body is not covered by the first body, and the label printer is controlled to generate a third instruction. Based on the third instruction, the motor is controlled to drive the medium belt to be transferred to be conveyed forward to the first preset length.

8. The control method according to claim 1, wherein, The rubber roller assembly includes a rubber roller and a rubber roller gear, wherein the rubber roller gear is disposed on the rubber roller; When the rubber roller assembly is in the transmission connection state, the rubber roller assembly is transmission connected to the motor. The motor drives the rubber roller assembly to move the label paper and the transfer medium belt in the same direction. Controlling the motor to drive the label paper to retract to the target complete transfer position includes: When the motor and the rubber roller are connected by a gear transmission so that the rubber roller assembly is in the transmission connection state, the motor is controlled to drive the rubber roller assembly to move the label paper back; When the label paper is detected to have retracted to the target complete transfer position, the motor is controlled to stop driving the glue roller assembly.

9. The control method according to claim 8, wherein, The label printer further includes a paper return detection component, which includes a label paper light transmission detection part. The paper return detection component is configured to detect the light transmission threshold of the projection area corresponding to the light transmission detection part on the label paper. The step of controlling the motor to stop driving the adhesive roller assembly when the label paper is detected to have retracted to the target complete transfer position includes: When the label paper is retracted, the light transmittance threshold of the projection area corresponding to the light transmittance detection part on the label paper is detected based on the paper return detection component; When the light transmittance threshold changes from the first preset light transmittance threshold to the second preset light transmittance threshold, the label paper is determined to retract to the target complete transfer position, and the motor is controlled to stop driving the glue roller assembly.

10. The control method according to claim 9, wherein, The method further includes: When the light transmittance threshold is determined to be the first preset light transmittance threshold, the projection area is located in the label face paper area of ​​the label paper; When the light transmittance threshold is determined to be the second preset light transmittance threshold, the projection area is located in the blank release paper area adjacent to the label face paper area in the label paper.

11. The control method according to claim 10, wherein, The second preset light transmittance threshold is less than the first preset light transmittance threshold; or, the second preset light transmittance threshold is greater than the first preset light transmittance threshold.

12. The control method according to claim 9, wherein, After controlling the motor to drive the label paper back to the target complete transfer position, the method further includes: When the label printer is in a ready-to-print state and the rubber roller assembly is in a transmission connection state, the motor is controlled to drive the label paper to be conveyed forward for a third preset length. The third preset length is the target length from the light transmission detection unit to the paper tearing assembly at the corresponding printing exit of the label printer.

13. The control method according to claim 12, wherein, The method further includes: When the motor is controlled to drive the label paper to be conveyed forward for a third preset length, the third forward conveying speed of the label paper is the same as the fourth forward conveying speed of the medium to be transferred.

14. The control method according to claim 1, wherein, The label printer includes a first body, which has a mounting cavity for mounting a media cartridge to be transferred. The media cartridge includes a dispensing shaft, a retracting shaft, and a torsion spring. The torsion spring is configured to provide preload to the media tape to be transferred when the dispensing shaft and the retracting shaft cooperate to forward convey the media tape to be transferred, so that the media tape to be transferred between the dispensing shaft and the retracting shaft is in a taut state. The second preset length is less than the target conveying distance of the medium to be transferred when it changes from the first tension state to the second tension state; Wherein, the first tension state is the tension state corresponding to the initial tension of the medium tape to be transferred, and the second tension state is the tension state corresponding to the initial stable preload of the medium tape to be transferred.

15. A label printer, wherein, The control method for the label printer according to claim 1, wherein the label printer comprises: The first body is provided with a motor and a mounting cavity. The mounting cavity is configured to mount a dispensing shaft and a retracting shaft. Under the drive of the motor, the dispensing shaft and the retracting shaft cooperate to forward convey or retract the medium belt to be transferred. The second machine body is connected to the first machine body. The second machine body is equipped with a rubber roller assembly. When the rubber roller assembly is in the transmission connection state, the rubber roller assembly is connected to the motor to drive the label paper and the medium belt to be transferred to move in the same direction.

16. The label printer according to claim 15, wherein, The first body is further provided with a first lid-closing detection component, and the second body is further provided with a second lid-closing detection component. The second body is also configured to cover the first body. When the second body is placed on top of the first body, the first cover detection component abuts against the second cover detection component.

17. The label printer according to claim 15, wherein, The label printer further includes a paper return detection component, which includes a light transmission detection unit. The paper return detection component is configured to detect the light transmission threshold of the projection area corresponding to the light transmission detection unit on the label paper.

18. The label printer according to claim 15, wherein, The label printer also includes: A rubber roller drive wheel assembly is connected to the rubber roller assembly, which is configured to mount label paper. A transfer media tape drive shaft assembly includes a transfer media tape drive shaft group configured for mounting a transfer media tape, and includes a connector slidably connected to the transfer media tape drive shaft group; and... The medium to be transferred is connected to the drive wheel assembly and the connector. Wherein, the first preset speed output by the drive shaft assembly of the medium to be transferred is V1, and the second preset speed output by the rubber roller assembly is V2, where V1>V2; when the medium to be transferred is in contact with the label paper, the rubber roller drive wheel assembly drives the rubber roller assembly to rotate, thereby driving the label paper to move along a preset direction at the second preset speed V2, and the connector slides relative to the drive shaft assembly of the medium to be transferred so that the medium to be transferred and the label paper move synchronously.

19. The label printer of claim 18, wherein, 1 < V1 / V2 ≤ 2.

20. The label printer of claim 18, wherein, The printer also includes a media tape cassette for transfer, the media tape cassette including a media tape shaft configured for winding the media tape, the media tape shaft being coaxially mounted to the media tape drive shaft assembly. The connector includes a first connecting segment and a second connecting segment. The first connecting segment is connected to the drive wheel assembly of the medium to be transferred, and the second connecting segment is connected to the first connecting segment. The second connecting segment is circumferentially mounted around the drive shaft assembly of the medium to be transferred so that, when the medium to be transferred is in contact with the label paper, the second connecting segment can slide relative to the drive shaft assembly of the medium to be transferred in the circumferential direction of the medium to be transferred.

21. The label printer of claim 20, wherein, The drive shaft assembly of the medium to be transferred is disposed on one side of the drive wheel assembly of the medium to be transferred along the axial direction of the shaft of the medium to be transferred. The drive wheel assembly of the medium to be transferred has a slot, and the first connecting section extends from the second connecting section to at least partially extend into the slot and be attached to the drive wheel assembly of the medium to be transferred.

22. The label printer of claim 20, wherein, The drive shaft assembly of the medium tape to be transferred has an annular groove, and the second connecting section is disposed in the annular groove. In the axial direction of the medium tape shaft, the second connecting section contacts the wall surface of the drive shaft assembly defining the annular groove, so as to define the position of the second connecting section along the axial direction of the medium tape shaft.

23. The label printer of claim 20, wherein, The first connecting segment and the second connecting segment are integrally formed; The second connecting section is spirally wound around the drive shaft assembly of the medium to be transferred, and the second connecting section is wound at least two times.

24. The label printer of claim 18, wherein, The label printer includes a main body and a support rod, wherein the support rod is mounted on the main body; The transfer medium belt drive shaft assembly includes: A fixed shaft is coaxially sleeved on the outer periphery of the support rod and rotatably mounted on the support rod; The drive shaft for the transfer medium tape is configured to be mounted on the transfer medium tape and is mounted on one end of the fixed shaft; The sleeve is connected to the other end of the fixed shaft and the connector, respectively.

25. The label printer of claim 24, wherein, The drive shaft assembly of the printing medium belt also includes a one-way bearing. The drive shaft of the printing medium belt is connected to the other end of the fixed shaft through the one-way bearing, and the drive shaft of the printing medium belt is sleeved on the outer periphery of the support rod, the sleeve and the one-way bearing. The one-way bearing is configured to limit the position of the drive shaft of the transfer medium tape relative to the fixed shaft when the transfer medium tape has a tendency to move along the preset direction. The one-way bearing is also configured to enable the drive shaft of the transfer medium tape to rotate about the axial direction of the one-way bearing relative to the fixed shaft when the transfer medium tape has a tendency to move in the opposite direction of the preset direction.

26. The label printer of claim 25, wherein, One of the outer wall surface of the one-way bearing and the inner wall surface of the drive shaft of the medium to be transferred are provided with a limiting groove and the other is provided with a limiting protrusion. The limiting groove extends along the axial direction of the one-way bearing, and the limiting protrusion is provided in the limiting groove to limit the position of the drive shaft of the medium to be transferred relative to the one-way bearing in the circumferential direction of the one-way bearing.

27. The label printer of claim 24, wherein, One of the sleeve and the fixed shaft has a polygonal cylindrical segment and the other has a polygonal cylindrical groove. The polygonal cylindrical segment is inserted into the polygonal cylindrical groove to define the position of the sleeve relative to the fixed shaft around the fixed shaft in the circumferential direction.

28. The label printer of claim 18, wherein, The printer also includes a transfer media tape cassette, which includes a transfer media tape shaft configured for winding the transfer media tape. The transfer medium belt drive shaft assembly includes a transfer medium belt drive shaft, the transfer medium belt shaft is coaxially mounted on the transfer medium belt drive shaft, the outer wall of the transfer medium belt drive shaft is provided with at least one first ratchet (1512b), the inner wall of the transfer medium belt shaft is provided with at least one second ratchet, the transfer medium belt drive shaft rotates to cause the first ratchet and the second ratchet to abut against each other, so as to drive the transfer medium belt shaft to rotate about the axial direction of the transfer medium belt shaft.

29. The label printer of claim 18, wherein, The transfer medium tape drive shaft assembly includes a transfer medium tape drive shaft; The printer also includes a media tape cassette for transfer, which includes two media tape shafts configured for winding the media tape. One of the two media tape shafts is a take-up shaft, which is coaxially mounted to the media tape drive shaft.

30. The label printer of claim 18, wherein, The rubber roller drive wheel assembly is in contact with the drive wheel assembly of the medium to be transferred; The printer also includes a motor, which is connected to the drive wheel assembly of the media to be transferred or the drive wheel assembly of the rubber roller to drive the rubber roller drive wheel assembly and the drive wheel assembly of the media to be transferred to operate.

31. The label printer of claim 30, wherein, The rubber roller drive wheel assembly includes a first rubber roller drive gear and a second rubber roller drive gear that mesh with each other, and the first rubber roller drive gear is connected to the motor. The transfer medium belt drive wheel assembly includes a first transfer medium belt drive gear and a second transfer medium belt drive gear that mesh with each other. The first transfer medium belt drive gear meshes with the second rubber roller drive gear, and the second transfer medium belt drive gear is connected to the connector to drive the connector to move.

32. The label printer of claim 31, wherein, The second rubber roller drive gear is connected to the rubber roller assembly and can drive the rubber roller assembly to rotate; Wherein, the diameter of the second roller drive gear is larger than the diameter of the second medium belt drive gear, so that the first preset speed V1 of the medium belt drive shaft assembly driving the medium belt to move is greater than the second preset speed V2 of the roller assembly driving the label paper to move.

33. The label printer as claimed in claim 18, wherein, The first body includes an installation opening communicating with the mounting cavity. The installation opening is configured to allow the label paper to feed. The rubber roller drive wheel assembly and the medium belt drive wheel assembly to be transferred are both installed in the mounting cavity. The second body is coverably mounted on the first body. During the process of the second body covering the first body, the label paper gradually comes into contact with the medium belt to be transferred, and the rubber roller drive wheel group and the rubber roller assembly are coupled so that the rubber roller drive wheel group can drive the rubber roller assembly to rotate and dispense the label paper.

34. A control device for a label printer, wherein, The control device includes: The first control module is adapted to determine that when the label printer is in a printing state and the rubber roller assembly is not in a transmission connection state, the motor and the rubber roller assembly are not yet in a transmission connection state, and control the motor to drive the transfer medium belt to be conveyed forward for a first preset length. When the transfer medium belt is conveyed forward for a first preset length, the label paper corresponding to the rubber roller assembly does not move. The second control module is adapted to, when the rubber roller assembly is in the transmission connection state, connect the rubber roller assembly to the motor, drive the rubber roller assembly to move the label paper and the medium belt to be transferred in the same direction, and control the motor to drive the label paper to retract to the target complete transfer position, so that the medium belt to be transferred retracts by a second preset length; wherein, the second preset length is less than or equal to the first preset length.

35. A computer-readable storage medium, wherein, The computer-readable storage medium stores one or more programs that, when executed by a processor, implement the method of any one of claims 1 to 14.

Images