Thermal transfer printing apparatus and printhead therefor

Abstract

The application relates to a heat transfer printing device and a printing mechanism thereof, the printing mechanism comprising a printing head, a driving assembly and a transmission assembly, and a color band roll and a free end of the color band being selectively arranged on a first roll shaft and a second roll shaft. A driving motor of the driving assembly drives a driving wheel to rotate, so that a driving belt reciprocally moves and drives the printing head to swing to press against the color band through the transmission assembly, thereby realizing heat transfer printing. Since the printing head and the driving motor are both located on the same side of the driving belt and are relatively spaced apart, the driving motor can be effectively installed in the space on the side of the printing head, the structural arrangement of the printing mechanism is more compact, the space occupancy of the printing mechanism is optimized, and the assembly complexity of the printing mechanism caused by the dispersion of components is reduced. Through the optimization of the space layout of the printing mechanism, the overall size of the heat transfer printing device is effectively reduced, the problem that the device cannot enter a specific application scene due to the excessively large size is avoided, and the application boundary of the heat transfer printing device is widened.

Description

Technical Field

[0001] This application relates to the field of printing technology, and in particular to thermal transfer printing equipment and its printing mechanism. Background Technology

[0002] A thermal transfer printer is a type of printer that uses a printhead to press an ink ribbon onto a substrate surface. Then, a heating element on the printhead generates heat to melt the ink on the ribbon and transfer it onto the substrate to complete the printing process.

[0003] For example, a thermal transfer printer as described in patent CN222959461U has a first and a second reel rotatably mounted on a mounting plate. A ribbon is wound on the first reel, with its free end fixed to the second reel. A first drive assembly is mounted on the mounting plate, capable of driving a printing module to move along the X-axis. The printing module is slidably mounted on a first mounting block along the Z-axis, and a second drive assembly can drive the printing module to move along the Z-axis. By directly mounting the first and second reels on the mounting plate, the number of parts is simplified, reducing the precision required for fit between components and saving manufacturing costs.

[0004] However, existing thermal transfer printers still suffer from high overall structural complexity, which limits their widespread application in scenarios with strict requirements on device size. Utility Model Content

[0005] Therefore, it is necessary to provide a more compact thermal transfer printing device and its printing mechanism to address the above problems.

[0006] A printing mechanism for a thermal transfer printing device includes a printhead, a drive assembly, and a transmission assembly. The drive assembly includes a drive motor, a drive wheel, a driven wheel, and a drive belt. The drive wheel and the driven wheel are spaced apart. The drive belt is fitted onto the drive wheel and the driven wheel. The drive motor is positioned opposite to the drive wheel. The printhead is connected to the drive belt via the transmission assembly. The transmission assembly is positioned close to the driven wheel. The printhead and the drive motor are both located on the same side of the drive belt and are spaced apart. The drive motor drives the drive wheel to rotate, causing the drive belt to reciprocate and, through the transmission assembly, to cause the printhead to oscillate.

[0007] In one embodiment, the transmission assembly includes a swing member, a mounting member, and a connector. One end of the connector is rotatably mounted on the machine body via the mounting member, and the other end is mounted on the print head. One end of the swing member is fixed to the connector, and the other end is fixed to the drive belt. The drive belt can drive the other end of the swing member to reciprocate, so as to drive the print head to swing relative to the machine body via the connector.

[0008] In one embodiment, the mounting component includes a rotating shaft and a mounting portion. The rotating shaft is mounted on one end of the mounting portion, and the other end of the mounting portion is used to fix it to the machine body. One end of the connector is mounted on the rotating shaft and is rotatable relative to the mounting portion.

[0009] In one embodiment, the connector includes a rotating part, a first connecting part, and a second connecting part. The second connecting part is connected to the rotating part through the first connecting part. The rotating part is rotatably connected to the rotating shaft. The print head is fixed to the second connecting part. The end of the swing member away from the drive belt is fixed to the first connecting part.

[0010] In one embodiment, there are two rotating parts and two first connecting parts. Each rotating part is connected to the second connecting part through a first connecting part, and the two first connecting parts are arranged at intervals relative to each other. The two rotating parts are arranged at intervals on the rotating shaft and are rotatable relative to the mounting part through the rotating shaft.

[0011] A thermal transfer printing apparatus includes a body, a printing mechanism as described above, a first roll and a second roll, the printing mechanism being mounted on the body; the first roll and the second roll are spaced apart on the body and located above the printing mechanism, and at least one of the first roll and the second roll is rotatable relative to the body.

[0012] In one embodiment, the thermal transfer printing apparatus further includes a first guide roller and a second guide roller, which are spaced apart on the machine body. The first guide roller is located below the side of the print head facing away from the drive motor, and the second guide roller is located below the side of the drive motor facing away from the print head.

[0013] In one embodiment, the thermal transfer printing apparatus further includes a third guide roller and a fourth guide roller, which are spaced apart on the machine body. The third guide roller is located above the first guide roller, and the fourth guide roller is located above the second guide roller. The printing mechanism is located within the space enclosed by the first guide roller, the second guide roller, the third guide roller, and the fourth guide roller. The first roll is located above the third guide roller and is rotatable relative to the machine body, and the second roll is located above the fourth guide roller.

[0014] In one embodiment, the machine body includes a mounting plate, and the printing mechanism, the first roll and the second roll, the first guide roller, the second guide roller, the third guide roller and the fourth guide roller are all mounted on the mounting plate; the thermal transfer printing equipment also includes a panel, which covers the printing mechanism and is disposed opposite to the mounting plate, and the panel is mounted on the end of the third guide roller and the fourth guide roller away from the mounting plate.

[0015] In one embodiment, the thermal transfer printing device further includes a controller and a control knob. The control knob is mounted on a panel, and the controller is mounted on the machine body or the transmission assembly. The control knob is electrically connected to the controller, and the drive motor is electrically connected to the controller.

[0016] In the aforementioned thermal transfer printing equipment and its printing mechanism, the ribbon roll and its free end can be optionally mounted on the first and second reels, with the ribbon passing through the print head of the printing mechanism. During use, the drive motor of the drive assembly drives the drive wheel to rotate, thereby causing the drive belt to reciprocate. This movement, via the transmission assembly, drives the print head to swing and press against the ribbon, achieving thermal transfer printing. Since the print head and drive motor are both located on the same side of the drive belt and are spaced apart, the space on the side where the print head is located can be effectively utilized to install the drive motor, resulting in a more compact structural layout of the printing mechanism. Based on this single-sided spaced layout, the functional components of the printing mechanism do not need to be dispersed to avoid space on both sides, optimizing the space occupancy rate of the printing mechanism, resulting in a more rational layout and reducing the assembly complexity caused by the dispersion of components. By optimizing the spatial layout of the printing mechanism, the overall size of the thermal transfer printing equipment is effectively reduced, avoiding the problem of the equipment being unable to enter specific application scenarios due to excessive size, thus broadening the application boundaries of the thermal transfer printing equipment. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0019] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown in the drawings only as examples and not necessarily to actual scale.

[0020] Figure 1 This is a schematic diagram of the structure of a thermal transfer printing device in one embodiment.

[0021] Figure 2 for Figure 1 The diagram shown is a structural schematic of a thermal transfer printing device without a panel.

[0022] Figure 3 for Figure 2 The diagram shown is a schematic of the thermal transfer printing equipment, omitting the main body.

[0023] Figure 4 for Figure 3 The diagram shows the structure of the thermal transfer printing equipment from another perspective.

[0024] Figure 5 for Figure 4 A schematic diagram of the printing mechanism in the image.

[0025] Figure 6 for Figure 5 The schematic diagram of the printing mechanism shown is omitted, omitting the structural diagram of the drive component.

[0026] Explanation of reference numerals in the attached figures: Thermal transfer printing equipment 10; body 100; mounting plate 110; printing mechanism 200; print head 210; drive assembly 220; drive motor 221; drive wheel 222; driven wheel 223; drive belt 224; transmission assembly 230; swing component 231; mounting component 232; rotating shaft 2321; mounting part 2322; connector 233; rotating part 2331; first connecting part 2332; second connecting part 2333; first roll 300; second roll 400; first guide roller 500; second guide roller 600; third guide roller 700; fourth guide roller 800; panel 900; controller 910; control knob 920; Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] See Figures 1 to 4 In one embodiment, the thermal transfer printing apparatus 10 at least improves the compactness of the structure. Specifically, the thermal transfer printing apparatus 10 includes a body 100, a printing mechanism 200, a first reel 300, and a second reel 400, with the printing mechanism 200 mounted on the body 100. The first reel 300 and the second reel 400 are spaced apart on the body 100 and located above the printing mechanism 200, and at least one of the first reel 300 and the second reel 400 is rotatable relative to the body 100.

[0029] like Figure 3 and Figure 4 As shown, in one embodiment, the printing mechanism 200 includes a print head 210, a drive assembly 220, and a transmission assembly 230. The drive assembly 220 includes a drive motor 221, a drive wheel 222, a driven wheel 223, and a drive belt 224. The drive wheel 222 and the driven wheel 223 are spaced apart, and the drive belt 224 is fitted onto the drive wheel 222 and the driven wheel 223. The drive motor 221 is positioned opposite to the drive wheel 222. The print head 210 is connected to the drive belt 224 via the transmission assembly 230. The transmission assembly 230 is positioned close to the driven wheel 223, and the print head 210 and the drive motor 221 are both located on the same side of the drive belt 224 and are spaced apart relative to each other. The drive motor 221 drives the drive wheel 222 to rotate, causing the drive belt 224 to reciprocate and, through the transmission assembly 230, to drive the print head 210 to swing.

[0030] Specifically, the printhead 210 is used to press against the ribbon and transfer ink through heating, providing the basic conditions for thermal transfer printing. The drive wheel 222 and driven wheel 223 are spaced horizontally, and the drive belt 224 is fitted around the outer periphery of the drive wheel 222 and driven wheel 223, forming a closed-loop transmission structure. The output shaft of the drive motor 221 is fixedly connected to the drive wheel 222, driving the drive wheel 222 to rotate around its own axis, thereby causing the drive belt 224 to reciprocate along the outer periphery of the drive wheel 222 and driven wheel 223. When the drive belt 224 reciprocates, it can drive the printhead 210 to swing around a fixed point through the transmission assembly 230, allowing the printhead 210 to selectively press against or detach from the ribbon, completing the thermal transfer printing operation.

[0031] In use, the ribbon roll and its free end can be optionally mounted on the first reel 300 and the second reel 400, and the ribbon passes through the print head 210 of the printing mechanism 200. The drive motor 221 of the drive assembly 220 drives the drive wheel 222 to rotate, thereby causing the drive belt 224 to reciprocate, and through the transmission assembly 230, it drives the print head 210 to swing and press against the ribbon to achieve thermal transfer printing. Since the print head 210 and the drive motor 221 are both located on the same side of the drive belt 224 and are relatively spaced apart, the space on the side where the print head 210 is located can be effectively utilized to install the drive motor 221, making the structural layout of the printing mechanism 200 more compact. Based on the above-mentioned single-sided spaced layout, the functional components of the printing mechanism 200 do not need to be scattered to avoid space on both sides, thereby optimizing the space occupancy of the printing mechanism 200, making the layout more reasonable, and reducing the assembly complexity of the printing mechanism 200 caused by the dispersion of components. By optimizing the spatial layout of the printing mechanism 200, the overall size of the thermal transfer printing device 10 is effectively reduced, avoiding the problem that the device cannot be used in specific application scenarios due to its excessive size, and expanding the application boundaries of the thermal transfer printing device 10.

[0032] See Figures 2 to 4 In one embodiment, the machine body 100 includes a mounting plate 110, on which the printing mechanism 200, the first roller 300, and the second roller 400 are all mounted. Specifically, the first roller 300 and the second roller 400 are both cylindrical rollers, spaced apart along the width direction of the mounting plate 110 in the upper region of the mounting plate 110, located above the printing mechanism 200. One end of the first roller 300 and the second roller 400 are rotatably connected to the mounting plate 110 via bearings, and at least one of them is connected to an external drive component, such as a motor, and can be controlled to rotate relative to the machine body 100 for winding ribbon. The ribbon roll can be selectively fitted onto the first roller 300 or the second roller 400, and the free end of the ribbon is fixed to the other roller. In this embodiment, both the first roller 300 and the second roller 400 can be driven to rotate by a motor, further improving the stability of the ribbon movement control.

[0033] See Figure 2 and Figure 3 In one embodiment, the thermal transfer printing apparatus 10 further includes a first guide roller 500 and a second guide roller 600, which are spaced apart on the body 100. The first guide roller 500 is located below the side of the print head 210 facing away from the drive motor 221, and the second guide roller 600 is located below the side of the drive motor 221 facing away from the print head 210.

[0034] Furthermore, the thermal transfer printing equipment 10 also includes a third guide roller 700 and a fourth guide roller 800, which are spaced apart on the machine body 100. The third guide roller 700 is located above the first guide roller 500, and the fourth guide roller 800 is located above the second guide roller 600. The printing mechanism 200 is located within the space enclosed by the first guide roller 500, the second guide roller 600, the third guide roller 700, and the fourth guide roller 800. The first roll 300 is located above the third guide roller 700 and is rotatable relative to the machine body 100, and the second roll 400 is located above the fourth guide roller 800.

[0035] The first to fourth guide rollers form a rectangular space, and the central area of ​​the printing mechanism 200 is located within this rectangular space. This space guides the ribbon from the reel to below the print head 210, ensuring a stable ribbon transport path, effectively preventing ribbon deviation or wrinkles, ensuring the adhesion accuracy between the print head 210 and the ribbon, and improving the clarity of the heat transfer pattern. Simultaneously, the print head 210 and the drive motor 221 are both located on the same side of the drive belt 224 and spaced apart, making full use of the unused space on one side of the print head 210 and avoiding structural redundancy caused by a double-sided layout. Furthermore, the printing mechanism 200 is located within the space enclosed by the four guide rollers, further compressing the internal space of the equipment and adapting to confined usage scenarios. Specifically, the first guide roller 500, the second guide roller 600, the third guide roller 700 and the fourth guide roller 800 are all mounted on the mounting plate 110, which provides mounting space for the guide rollers.

[0036] See also Figure 1 In one embodiment, the thermal transfer printing apparatus 10 further includes a panel 900, which covers the printing mechanism 200 and is positioned opposite to the mounting plate 110. The panel 900 is mounted on the ends of the third guide roller 700 and the fourth guide roller 800 away from the mounting plate 110. Specifically, the panel 900 is a rectangular cover plate, which covers the outside of the printing mechanism 200 and is positioned opposite to the mounting plate 110. Its two ends are respectively fixed to the ends of the third guide roller 700 and the fourth guide roller 800 away from the mounting plate 110 by bolts, thereby protecting the internal components of the printing mechanism 200 and forming the appearance of the apparatus.

[0037] Specifically, the thermal transfer printing device 10 also includes a controller 910 and a control knob 920. The control knob 920 is mounted on the panel 900, and the controller 910 is mounted on the body 100 or the transmission assembly 230. The control knob 920 is electrically connected to the controller 910, and the drive motor 221 is electrically connected to the controller 910. In this embodiment, the controller 910 can be a microcontroller or a PLC module, and can be mounted on the mounting plate 110 or the transmission assembly 230. The control knob 920 is located on the outer wall of the panel 900 for easy user operation. The user can adjust the output signal of the controller 910 by rotating the control knob 920, thereby controlling the start and operation of the drive motor 221 to achieve adjustment and control of the print head 210.

[0038] See Figures 4 to 6 In one embodiment, the transmission assembly 230 of the printing mechanism 200 includes a swing member 231, a mounting member 232, and a connecting member 233. One end of the connecting member 233 is rotatably mounted on the machine body 100 via the mounting member 232, and the other end is mounted on the print head 210. One end of the swing member 231 is fixed to the connecting member 233, and the other end is fixed to the drive belt 224. The drive belt 224 can drive the other end of the swing member 231 to reciprocate, so as to drive the print head 210 to swing relative to the machine body 100 via the connecting member 233. The mounting member 232 is used to fix the transmission assembly 230 and the machine body 100, and the connecting member 233 is used to connect the print head 210 and the swing member 231. The swing member 231 is a rigid rod, one end of which is fixed to the drive belt 224 via a locking member, and the other end is fixedly connected to the connecting member 233. When the drive belt 224 reciprocates, it can drive one end of the swing member 231 to move synchronously, thereby pushing the connector 233 to rotate around the fixed axis, and finally driving the print head 210 to swing.

[0039] Specifically, the mounting component 232 includes a rotating shaft 2321 and a mounting portion 2322. The rotating shaft 2321 is mounted on one end of the mounting portion 2322, and the other end of the mounting portion 2322 is used to fix it to the machine body 100. One end of the connecting component 233 is mounted on the rotating shaft 2321 and is rotatable relative to the mounting portion 2322. Further, the mounting portion 2322 is a plate-like structure, with one end fixedly connected to the rotating shaft 2321 and the other end fixed to the mounting plate 110 of the machine body 100 by bolts, thereby achieving an effective connection between the printing mechanism 200 and the machine body 100.

[0040] Specifically, the connector 233 includes a rotating part 2331, a first connecting part 2332, and a second connecting part 2333. The second connecting part 2333 is connected to the rotating part 2331 through the first connecting part 2332. The rotating part 2331 is rotatably connected to the rotating shaft 2321. The print head 210 is fixed to the second connecting part 2333, and the end of the swing member 231 away from the drive belt 224 is fixed to the first connecting part 2332. Further, the print head 210 is fixed to the lower end of the second connecting part 2333 by bolts. The first connecting part 2332 can be a rod-shaped structure, and the rotating part 2331 can be a sleeve structure. The rotating part 2331 can rotate relative to the mounting part 2322 about the axis of the rotating shaft 2321.

[0041] In this embodiment, there are two rotating parts 2331 and two first connecting parts 2332. Each rotating part 2331 is connected to a second connecting part 2333 via a corresponding first connecting part 2332, and the two first connecting parts 2332 are arranged at intervals relative to each other. The two rotating parts 2331 are arranged at intervals on a rotating shaft 2321, and both are rotatable relative to the mounting part 2322 via the rotating shaft 2321. The two first connecting parts 2332 are arranged at intervals relative to each other along the length direction of the second connecting part 2333, and the two rotating parts 2331 are fitted at intervals around the outer periphery of the rotating shaft 2321. By providing two rotating parts 2331 and two first connecting parts 2332, the stability of the print head 210 can be improved.

[0042] When the aforementioned thermal transfer printing equipment 10 is in operation, the ribbon roll is mounted on the first reel 300. The free end of the ribbon passes sequentially under the third guide roller 700, under the print head 210, and above the first guide roller 500, and is finally fixed on the second reel 400. The drive motor 221 receives the instruction from the controller 910 and rotates, driving the drive wheel 222 to rotate, which in turn causes the drive belt 224 to reciprocate. The drive belt 224 drives the oscillating member 231 to move, which in turn causes the print head 210 to oscillate around the rotating shaft 2321 and press against the ribbon through the connecting member 233. The ribbon is slowly transported under the drive of the first reel 300. The print head 210 heats the ribbon and transfers the ink to the substrate. The substrate passes under the print head 210, completing the thermal transfer printing process.

[0043] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A printing mechanism for a thermal transfer printing device, characterized in that, The printing mechanism includes: Print head; A drive assembly includes a drive motor, a drive wheel, a driven wheel, and a drive belt. The drive wheel and the driven wheel are spaced apart. The drive belt is sleeved on the drive wheel and the driven wheel. The drive motor is positioned opposite to the drive wheel. The transmission assembly includes a print head that is connected to the drive belt via the transmission assembly. The transmission assembly is located near the driven wheel, and the print head and the drive motor are both located on the same side of the drive belt and are spaced apart from each other. The drive motor is used to drive the drive wheel to rotate, so that the drive belt moves back and forth and drives the print head to swing through the transmission assembly.

2. The printing mechanism according to claim 1, characterized in that, The transmission assembly includes a swinging component, a mounting component, and a connecting component. One end of the connecting component is rotatably mounted on the machine body via the mounting component, and the other end is mounted on the print head. One end of the swinging component is fixed to the connecting component, and the other end is fixed to the drive belt. The drive belt can drive the other end of the swinging component to move back and forth, so as to drive the print head to swing relative to the machine body via the connecting component.

3. The printing mechanism according to claim 2, characterized in that, The mounting component includes a rotating shaft and a mounting part. The rotating shaft is mounted on one end of the mounting part, and the other end of the mounting part is used to fix it to the machine body. One end of the connector is mounted on the rotating shaft and is rotatable relative to the mounting part.

4. The printing mechanism according to claim 3, characterized in that, The connector includes a rotating part, a first connecting part, and a second connecting part. The second connecting part is connected to the rotating part through the first connecting part. The rotating part is rotatably connected to the rotating shaft. The print head is fixed to the second connecting part. The end of the swing member away from the drive belt is fixed to the first connecting part.

5. The printing mechanism according to claim 4, characterized in that, The number of the rotating part and the first connecting part are both two. Each rotating part is connected to the second connecting part through a first connecting part. The two first connecting parts are arranged at intervals relative to each other. The two rotating parts are arranged at intervals on the rotating shaft and are rotatable relative to the mounting part through the rotating shaft.

6. A thermal transfer printing device, characterized in that, The thermal transfer printing equipment includes: Organism; The printing mechanism as described in any one of claims 1-5, wherein the printing mechanism is mounted on the machine body; A first reel and a second reel are spaced apart on the machine body and located above the printing mechanism, and at least one of the first reel and the second reel is rotatable relative to the machine body.

7. The thermal transfer printing apparatus according to claim 6, characterized in that, The thermal transfer printing equipment further includes a first guide roller and a second guide roller, which are spaced apart on the machine body. The first guide roller is located below the side of the print head facing away from the drive motor, and the second guide roller is located below the side of the drive motor facing away from the print head.

8. The thermal transfer printing apparatus according to claim 7, characterized in that, The thermal transfer printing equipment further includes a third guide roller and a fourth guide roller, which are spaced apart on the machine body. The third guide roller is located above the first guide roller, and the fourth guide roller is located above the second guide roller. The printing mechanism is located within the space enclosed by the first guide roller, the second guide roller, the third guide roller, and the fourth guide roller. The first roll is located above the third guide roller and is rotatable relative to the machine body, and the second roll is located above the fourth guide roller.

9. The thermal transfer printing apparatus according to claim 8, characterized in that, The machine body includes a mounting plate, and the printing mechanism, the first roll and the second roll, the first guide roller, the second guide roller, the third guide roller and the fourth guide roller are all mounted on the mounting plate; the thermal transfer printing equipment also includes a panel, which covers the printing mechanism and is disposed opposite to the mounting plate, and the panel is mounted on the end of the third guide roller and the fourth guide roller away from the mounting plate.

10. The thermal transfer printing apparatus according to claim 9, characterized in that, The thermal transfer printing equipment also includes a controller and a control knob. The control knob is mounted on the panel, and the controller is mounted on the machine body or the transmission assembly. The control knob is electrically connected to the controller, and the drive motor is electrically connected to the controller.

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