Printer

Abstract

The utility model discloses a printer which comprises a host, a thermal transfer ribbon box and a first limiting structure, the thermal transfer ribbon box is detachably arranged on the host, the thermal transfer ribbon box comprises a box body, a first reel and a second reel, the first reel and the second reel are rotatably arranged on the box body, and the second reel and the first reel are arranged at an interval in the radial direction; the first limiting structure is arranged on the main machine, and the first limiting structure is configured to limit at least one of the first reel and the second reel in the radial direction. The problem that the printing effect is affected due to the fact that the thermal transfer ribbon is prone to wrinkles can be solved.

Description

Technical Field

[0001] This application relates to the field of printing technology, and more particularly to a printer. Background Technology

[0002] In related technologies, printers transmit ribbon by synchronously rotating two side-by-side reels, one reel dispensing unprinted ribbon and the other retrieving printed ribbon.

[0003] However, during use, the two rolls are prone to deformation due to stress, causing them to move closer or further apart, resulting in wrinkles in the ribbon between them, which affects the printing effect. Utility Model Content

[0004] This application provides a printer that improves the problem of ribbon wrinkling affecting printing quality.

[0005] The printer provided in this application includes a main unit, a ribbon cartridge, and a first limiting structure. The ribbon cartridge is detachably disposed on the main unit. The ribbon cartridge includes a cartridge body, a first reel, and a second reel. The first reel and the second reel are rotatably disposed on the cartridge body and are radially spaced apart. The first limiting structure is disposed on the main unit and is configured to limit at least one of the first reel and the second reel radially.

[0006] In some embodiments, the box body is provided with a first through hole, the first spool passes through the first through hole and is clearance-fitted with the first through hole; and / or, the box body is provided with a second through hole, the second spool passes through the second through hole and is clearance-fitted with the second through hole.

[0007] In some embodiments, the first limiting structure includes a first limiting hole disposed on the host, and the first spool is limited to the first limiting hole to limit the first spool in the radial direction; and / or, the first limiting structure includes a second limiting hole disposed on the host, and the second spool is limited to the second limiting hole to limit the second spool in the radial direction.

[0008] In some embodiments, the housing includes a first housing and a second housing spaced apart from each other, the first spool being rotatably disposed in the first housing, and the second spool being rotatably disposed in the second housing.

[0009] In some embodiments, the first housing and the second housing are integrally disposed, or the first housing and the second housing are separately disposed.

[0010] In some embodiments, the printer further includes a limiting protrusion disposed on the host, the opposite sides of the limiting protrusion abutting against the first housing and the second housing respectively, to prevent the first housing and the second housing from getting close to each other.

[0011] In some embodiments, a second limiting structure is provided between the host and the housing, the second limiting structure being configured to prevent relative displacement between the housing and the host.

[0012] In some embodiments, the number of second limiting structures is multiple, and the multiple second limiting structures are arranged at intervals along the circumference of the first reel; and / or, the multiple second limiting structures are arranged at intervals along the circumference of the second reel.

[0013] In some embodiments, the second limiting structure includes a limiting post and a limiting groove that are interlocked, wherein the limiting post is disposed in one of the main unit and the housing, and the limiting groove is disposed in the other of the main unit and the housing.

[0014] In some embodiments, the host computer has a receiving cavity and an inlet communicating with the receiving cavity, and the box body is inserted into the receiving cavity through the inlet; the limiting groove is provided in the host computer, and the limiting groove communicates with the inlet.

[0015] In some embodiments, there are multiple limiting grooves and multiple limiting posts, and the multiple limiting grooves and multiple limiting posts correspond one-to-one; some of the limiting grooves are spaced apart circumferentially along the first scroll, and other of the limiting grooves are spaced apart circumferentially along the second scroll; or, some of the limiting posts are spaced apart circumferentially along the first scroll, and other of the limiting posts are spaced apart circumferentially along the second scroll.

[0016] In some embodiments, there are multiple limiting grooves and multiple limiting posts, and the multiple limiting grooves and multiple limiting posts correspond one-to-one; some of the limiting grooves are spaced apart along the axial direction of the first reel, and other of the limiting grooves are spaced apart along the axial direction of the second reel; or, some of the limiting posts are spaced apart along the axial direction of the first reel, and other of the limiting posts are spaced apart along the axial direction of the second reel.

[0017] In some embodiments, the box body includes a first shell and a second shell spaced apart from each other, the first scroll is rotatably disposed in the first shell, and the second scroll is rotatably disposed in the second shell; there are multiple limiting grooves and multiple limiting posts, and the multiple limiting grooves and multiple limiting posts correspond one-to-one; some of the limiting grooves are disposed in the first shell, and other of the limiting grooves are disposed in the second shell; or, some of the limiting posts are disposed in the first shell, and other of the limiting posts are disposed in the second shell.

[0018] In some embodiments, the limiting post is disposed on the box body, and the box body is provided with reinforcing ribs, which are connected at the junction of the box body and the limiting post.

[0019] In some embodiments, the number of reinforcing ribs is multiple; wherein at least some of the reinforcing ribs extend along a first direction, the first direction being parallel to the plane containing the axis of the first spool and the axis of the second spool, and the first direction being perpendicular to the axis of the first spool and the axis of the second spool; and / or, at least some of the reinforcing ribs extend along a second direction, the second direction being perpendicular to the plane containing the axis of the first spool and the axis of the second spool.

[0020] In some embodiments, the host computer has a receiving cavity; the housing is detachably installed in the receiving cavity; and a guide structure is provided between the host computer and the housing for guiding the housing into and out of the receiving cavity.

[0021] In some embodiments, the guide structure includes a guide groove and a guide protrusion that slide and adapt to each other, the guide groove being disposed in one of the main unit and the housing, and the guide protrusion being disposed in the other of the main unit and the housing.

[0022] In some embodiments, the two ends of the first reel abut against the host and the housing respectively to restrict the movement of the first reel along the axis; and / or, the two ends of the second reel abut against the host and the housing respectively to restrict the movement of the second reel along the axis.

[0023] The printer in this embodiment of the application sets a first limiting structure on the host to limit at least one of the first roll and the second roll in the radial direction, so that the relative position of the axes of the first roll and the second roll is not easily changed, thereby keeping the ribbon located between the first roll and the second roll flat and thus improving the printing effect. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0025] Figure 1 A perspective view of a printer according to an embodiment of this application is shown.

[0026] Figure 2 An exploded view of a printer according to one embodiment of this application is shown.

[0027] Figure 3 Another exploded view of the printer in one embodiment of this application is shown.

[0028] Figure 4 A perspective view of the box body according to one embodiment of this application is shown.

[0029] Figure 5 Another exploded view of the printer in one embodiment of this application is shown.

[0030] Figure 6 It shows Figure 5 A magnified view of a section at point B.

[0031] Figure 7 It shows Figure 5 A magnified view of a section at point C.

[0032] Figure 8 Another exploded view of the printer in one embodiment of this application is shown.

[0033] Figure 9 A perspective view of the inner casing of the host computer in one embodiment of this application is shown.

[0034] Figure 10 A perspective view of a ribbon cassette according to an embodiment of this application is shown.

[0035] Figure 11 It shows Figure 4 A magnified view of a portion of point A in the middle.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Printer;

[0038] 10. Main unit; 11. Limiting protrusion; 12. Receiving cavity; 13. Inlet; 14. Outer shell; 15. Inner shell; 151. First through hole; 152. Second through hole;

[0039] 20. Box body; 21. First through hole; 22. Second through hole; 23. First shell; 231. First connecting port; 24. Second shell; 241. Second connecting port; 25. Reinforcing rib;

[0040] 30. First spool; 31. Winding section; 32. Connecting section;

[0041] 40. Second scroll;

[0042] 51. First limiting hole; 52. Second limiting hole;

[0043] 61. Limiting post; 62. Limiting groove;

[0044] 71. Guide groove; 72. Guide protrusion;

[0045] X, the first direction; Y, the second direction. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0047] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0048] In related technologies, printers use two parallel spools that rotate synchronously to transfer the ribbon. One spool dispenses unprinted ribbon, while the other retracts the printed ribbon. To ensure print quality, the ribbon between the two spools needs to remain flat, which requires the two spools to maintain parallel axes and a fixed distance between them.

[0049] However, during use, the two rollers are prone to deformation due to stress, causing them to move closer or further apart. This results in their axes no longer being parallel or the distance between them changing, causing wrinkles to form in the ribbon between them, which in turn affects the printing effect.

[0050] To address the aforementioned issues, this application provides a printer that uses a limiting structure on the host to radially limit at least one of the two rollers, making it less likely for the relative positions of the axes of the two rollers to change. This keeps the ribbon between the two rollers flat, thereby improving the printing effect.

[0051] See Figures 1 to 3 The printer 1 provided in this application embodiment includes a host 10, a ribbon cartridge, and a first limiting structure.

[0052] The shape of the host 10 is not limited, and it can provide mounting reference and accommodation space for other mechanical and electrical components of the printer 1.

[0053] The ribbon cartridge includes a cartridge body 20, a first reel 30, and a second reel 40. The shape of the cartridge body 20 is not limited, and it can provide an installation reference for the first reel 30, the second reel 40, and other possible components. The ribbon cartridge is detachably mounted on the main unit 10 to facilitate the installation and removal of the first reel 30 and the second reel 40, as well as the adjustment and replacement of the ribbon.

[0054] The first roller 30 and the second roller 40 are rotatably mounted on the housing 20, and the first roller 30 and the second roller 40 are radially spaced apart. The first roller 30 and the second roller 40 may be the same or different in size, and the distance between the first roller 30 and the second roller 40 is adjusted according to the spatial layout design of the printer 1, and is not limited here.

[0055] For example, when the first spool 30 rotates, it drives the ribbon wound on it to be transported toward the second spool 40. When the second spool 40 rotates, it drives the ribbon from the first spool 30 to be wound and recycled, thereby realizing the transmission of the ribbon. This allows unused ribbon to be continuously transported to the printing position during the printing process, and used ribbon to be promptly transported from the printing position to the second spool 40 and recycled.

[0056] A first limiting structure is disposed on the host 10, and the first limiting structure is configured to limit at least one of the first spool 30 and the second spool 40 in the radial direction. Based on this, the relative position of the axes of the first spool 30 and the second spool 40 is not easily changed, thereby keeping the ribbon located between the first spool 30 and the second spool 40 flat, thereby improving the printing effect.

[0057] Combination Figure 3 and Figure 4 In some embodiments, the housing 20 is provided with a first through hole 21 and a second through hole 22. The first spool 30 passes through the first through hole 21 and is clearance-fitted with it, while the second spool 40 passes through the second through hole 22 and is clearance-fitted with it. Thus, the housing 20 provides an mounting reference for the first spool 30 and the second spool 40, while the first through hole 21 avoids the first spool 30, allowing it to rotate smoothly, and the second through hole 22 avoids the second spool 40, allowing it to rotate smoothly, thereby preventing jamming during ribbon transport.

[0058] In other embodiments, the housing 20 has a first through hole 21 but no second through hole 22. The first spool 30 passes through the first through hole 21 and is clearance-fitted with it. Thus, the housing 20 provides an mounting reference for the first spool 30, while the first through hole 21 avoids obstructing the first spool 30, allowing it to rotate smoothly and preventing jamming during ribbon transport. The second spool 40 is assembled with the housing 20 in other ways. For example, the second spool 40 is directly connected to one side surface of the housing 20.

[0059] In other embodiments, the housing 20 has a second through hole 22 but no first through hole 21. The second spool 40 passes through the second through hole 22 and is clearance-fitted with it. Thus, the housing 20 provides a mounting reference for the second spool 40, while the second through hole 22 avoids obstructing the second spool 40, allowing it to rotate smoothly and preventing jamming during ribbon transport. The second spool 40 is then assembled with the housing 20 in other ways. For example, the first spool 30 is directly connected to one side surface of the housing 20.

[0060] See Figures 5 to 7 In some embodiments, the first limiting structure includes a first limiting hole 51 and a second limiting hole 52 disposed on the host 10. The first spool 30 is limited by the first limiting hole 51 to limit the first spool 30 to the upper limit in the radial direction, and the second spool 40 is limited by the second limiting hole 52 to limit the second spool 40 to the upper limit in the radial direction. In this way, the axes of the first spool 30 and the axes of the second spool 40 are parallel to each other and the distance between them is fixed, thereby keeping the ribbon between the two spools flat and improving the printing effect.

[0061] In other embodiments, the first limiting structure includes one of two limiting holes, a first limiting hole 51 and a second limiting hole 52, which engages with the corresponding spool to limit the spool radially. This fixes the axial position of the spool and also mitigates the problem of ribbon wrinkling affecting printing quality.

[0062] Combination Figure 3 , Figure 8 and Figure 9 The following example illustrates the limiting fit structure between the first roller 30 and the first limiting hole 51, using the first limiting structure including the first limiting hole 51 as an example.

[0063] Specifically, the first reel 30 includes a winding portion 31 and a connecting portion 32. The winding portion 31 is used to wind carbon ribbon, and the connecting portion 32 is connected to the axial end of the winding portion 31 and is used for rotatable connection with the main unit 10. The main unit 10 includes an outer shell 14 and an inner shell 15, both of which are hollow. The outer shell 14 is provided with a drive mechanism for driving the first reel 30 and the second reel 40 to rotate, and the inner shell 15 is disposed inside the outer shell 14. A first limiting hole 51 is provided in the inner shell 15. The winding portion 31 of the first reel 30 is located inside the inner shell 15, and the connecting portion 32 extends out of the inner shell 15 through the first limiting hole 51 and is connected to the drive mechanism.

[0064] Combination Figure 3 and Figure 4 In some embodiments, the housing 20 includes a first housing 23 and a second housing 24 spaced apart from each other. A first spool 30 is rotatably disposed on the first housing 23, and a second spool 40 is rotatably disposed on the second housing 24. Thus, the first housing 23 can protect and limit the first spool 30, and the second housing 24 can protect and limit the second spool 40.

[0065] Optionally, the first housing 23 and the second housing 24 are integrally formed, so that the overall structure of the box 20 is simple and easy to process and form.

[0066] Optionally, the first housing 23 and the second housing 24 are separately configured, so that the first housing 23 and the second housing 24 can be disassembled and assembled independently, making operation more convenient.

[0067] Optionally, the first housing 23 has a first connecting port 231, one end of the ribbon is connected to a first spool 30 inside the first housing 23, and extends out of the first housing 23 through the first connecting port 231. The second housing 24 has a second connecting port 241, the other end of the ribbon is connected to a second spool 40 inside the second housing 24, and extends out of the second housing 24 through the second connecting port 241. The ribbon located between the first housing 23 and the second housing 24 can contact the workpiece to be printed located outside the first housing 23 and the second housing 24 to achieve the printing function.

[0068] In this way, the shape of the first housing 23 can be adapted to the shape of the first roll 30, and the shape of the second housing 24 can be adapted to the shape of the second roll 40. There is no need to reserve space in the box 20 to accommodate other components required for printing. This allows the first housing 23 to better limit the first roll 30 and the second housing 24 to limit the second roll 40, making the rotation process of the first roll 30 and the second roll 40 smoother.

[0069] See Figure 8 and Figure 9In some embodiments, the printer 1 further includes a limiting protrusion 11 disposed on the host 10. The opposite sides of the limiting protrusion 11 abut against the first housing 23 and the second housing 24 respectively to prevent the first housing 23 and the second housing 24 from getting close to each other. In this way, the first spool 30 and the second spool 40 can be further limited, making it less likely for the relative positions of the axes of the first spool 30 and the second spool 40 to change, thereby keeping the ribbon located between the first spool 30 and the second spool 40 flat, and thus improving the printing effect.

[0070] For example, the host 10 includes an outer shell 14 and an inner shell 15, both of which are hollow. The outer shell 14 is provided with various mechanical and electrical components for the printer 1, and the inner shell 15 is disposed inside the outer shell 14. The inner shell 15 has a first through hole 151 through which a first shell 23 passes and a second through hole 152 through which a second shell 24 passes. A limiting protrusion 11 is provided in the inner shell 15 and is located between the first through hole 151 and the second through hole 152. When the first shell 23 passes through the first through hole 151 and the second shell 24 passes through the second through hole 152, the limiting protrusion 11 located between the first through hole 151 and the second through hole 152 can support the outer walls of the first shell 23 and the second shell 24, preventing deformation of the first shell 23 and the second shell 24, or reducing the degree of deformation of the first shell 23 and the second shell 24.

[0071] In some embodiments, a second limiting structure is provided between the host 10 and the housing 20. The second limiting structure is configured to prevent relative displacement between the housing 20 and the host 10. In this way, based on the limiting cooperation between the first spool 30, the second spool 40 and the host 10, the housing 20 and the host 10 are further limited, thereby improving the stability of the first spool 30 and the second spool 40.

[0072] In some embodiments, there are multiple second limiting structures, which are spaced apart circumferentially along the first scroll 30 to improve the limiting effect.

[0073] Optionally, multiple second limiting structures are arranged at intervals along the circumference of the second scroll 40, thereby making the force distribution of the second limiting structures on the first scroll 30 more uniform.

[0074] Combination Figure 6 , Figure 7 and Figure 10In some embodiments, the second limiting structure includes a limiting post 61 and a limiting groove 62 that are interlocked. The limiting post 61 is located on one of the main unit 10 and the housing 20, and the limiting groove 62 is located on the other. For example, the limiting post 61 is located on the housing 20, and the limiting groove 62 is located on the main unit 10. In this way, the limiting between the main unit 10 and the housing 20 is achieved through the interlocking of the limiting post 61 and the limiting groove 62, resulting in a simple structure and convenient operation.

[0075] Combination Figure 5 and Figure 7 In some embodiments, the host 10 has a receiving cavity 12 and an inlet 13 communicating with the receiving cavity 12, and the box body 20 is inserted into the receiving cavity 12 through the inlet 13. A limiting groove 62 is provided in the host 10 and communicates with the inlet 13. In this way, the end of the box body 20 is limited and engaged with the host 10, so that the box body 20 is not easily deformed.

[0076] In some embodiments, there are multiple limiting grooves 62 and multiple limiting posts 61, and the multiple limiting grooves 62 and multiple limiting posts 61 correspond one-to-one. Optionally, some of the limiting grooves 62 are spaced apart along the circumference of the first scroll 30, and other of the limiting grooves 62 are spaced apart along the circumference of the second scroll 40; or, some of the limiting posts 61 are spaced apart along the circumference of the first scroll 30, and other of the limiting posts 61 are spaced apart along the circumference of the second scroll 40. Based on this, the multiple limiting grooves 62 and multiple limiting posts 61 correspond one-to-one for limiting and cooperating, thereby improving the limiting effect.

[0077] In some embodiments, there are multiple limiting grooves 62 and multiple limiting posts 61, and the multiple limiting grooves 62 and multiple limiting posts 61 correspond one-to-one. Optionally, some of the limiting grooves 62 are spaced apart along the axial direction of the first reel 30, and other of the limiting grooves 62 are spaced apart along the axial direction of the second reel 40; or, some of the limiting posts 61 are spaced apart along the axial direction of the first reel 30, and other of the limiting posts 61 are spaced apart along the axial direction of the second reel 40. Based on this, the multiple limiting grooves 62 and multiple limiting posts 61 correspond one-to-one for limiting and cooperating, thereby improving the limiting effect.

[0078] In some embodiments, the housing 20 includes a first housing 23 and a second housing 24 spaced apart from each other. A first spool 30 is rotatably disposed on the first housing 23, and a second spool 40 is rotatably disposed on the second housing 24. There are multiple limiting grooves 62 and multiple limiting posts 61, and each limiting groove 62 and each limiting post 61 corresponds one-to-one. Optionally, some limiting grooves 62 are disposed on the first housing 23, and others are disposed on the second housing 24; or, some limiting posts 61 are disposed on the first housing 23, and others are disposed on the second housing 24. Based on this, the first housing 23 and the host 10, as well as the second housing 24 and the host 10, are mutually limited and coordinated through the one-to-one correspondence between the multiple limiting grooves 62 and the multiple limiting posts 61, thus improving the limiting effect.

[0079] Combination Figure 4 and Figure 11 In some embodiments, the limiting post 61 is provided on the box body 20, and the box body 20 is provided with reinforcing ribs 25. The reinforcing ribs 25 are connected at the junction of the box body 20 and the limiting post 61, thereby improving the structural strength at the junction between the limiting post 61 and the box body 20, making the limiting post 61 less prone to deformation and breakage.

[0080] In some embodiments, the number of stiffeners 25 is multiple, thereby further improving the structural strength.

[0081] Optionally, at least a portion of the reinforcing ribs 25 extend toward the direction of carbon tape winding. Thus, when the carbon tape is wound and tensile force is generated, this portion of the reinforcing ribs 25 can more effectively prevent deformation and breakage of the fixing column.

[0082] Optionally, at least a portion of the reinforcing ribs 25 extend along a first direction X, which is parallel to the plane containing the axes of the first reel 30 and the second reel 40, and perpendicular to both axes. Thus, the extending direction of the reinforcing ribs 25 is parallel to the transport direction of the carbon ribbon located between the first reel 30 and the second reel 40, thereby better resisting the tensile forces generated during carbon ribbon transport.

[0083] Optionally, at least a portion of the reinforcing rib 25 extends along a second direction Y, which is perpendicular to the plane containing the axes of the first spool 30 and the second spool 40. Thus, at the bends in the carbon belt, the reinforcing rib 25 can also generate supporting force in the corresponding direction.

[0084] In some embodiments, the main unit 10 has a receiving cavity 12, and the housing 20 is detachably installed in the receiving cavity 12. A guide structure is provided between the main unit 10 and the housing 20 to guide the housing 20 in and out of the receiving cavity 12. In this way, the housing 20 can enter the receiving cavity 12 more quickly and smoothly and be assembled with the main unit 10, thereby improving installation efficiency.

[0085] Combination Figure 4 and Figure 7 In some embodiments, the guide structure includes a guide groove 71 and a guide protrusion 72 that slide and adapt to each other. The guide groove 71 is located on one of the main unit 10 and the housing 20, and the guide protrusion 72 is located on the other. For example, the guide groove 71 is located on the main unit 10, and the guide protrusion 72 is located on the housing 20. Through the sliding engagement between the guide groove 71 and the guide protrusion 72, the housing 20 can enter the receiving cavity 12 more smoothly, thereby making the installation of the housing 20 more convenient and quick.

[0086] Exemplarily, the main unit 10 includes a housing 14 and an inner housing 15, both of which are hollow. The housing 14 is provided with various mechanical and electrical components for the printer 1. The inner housing 15 is disposed inside the housing 14 and has a first through hole 151 (see...). Figure 9 The system includes a second through hole 152 and multiple guide grooves 71, wherein some guide grooves 71 are connected to the first through hole 151 and other guide grooves 71 are connected to the second through hole 152.

[0087] The box body 20 includes a first shell 23 and a second shell 24 spaced apart from each other. A first spool 30 is rotatably disposed on the first shell 23, and a second spool 40 is rotatably disposed on the second shell 24. The first shell 23 enters the inner shell 15 through a first through hole 151, and the second shell 24 enters the inner shell 15 through a second through hole 152.

[0088] The outer surfaces of the first housing 23 and the second housing 24 are provided with guide protrusions 72. When the first housing 23 enters the inner housing 15 through the first through hole 151, the guide protrusions 72 on the first housing 23 slide in cooperation with the corresponding guide grooves 71. When the second housing 24 enters the inner housing 15 through the second through hole 152, the guide protrusions 72 on the second housing 24 slide in cooperation with the corresponding guide grooves 71.

[0089] See Figure 3 In some embodiments, the two ends of the first reel 30 abut against the main unit 10 and the housing 20 respectively to restrict the movement of the first reel 30 along the axis. In this way, the first reel 30 can maintain axial stability, thereby making the transmission of the carbon ribbon smoother.

[0090] In some embodiments, the two ends of the second reel 40 abut against the main unit 10 and the housing 20 respectively to restrict the movement of the second reel 40 along the axis. In this way, the second reel 40 can maintain axial stability, thereby making the transmission of the ribbon smoother.

[0091] In some embodiments, the two ends of the first reel 30 abut against the main unit 10 and the housing 20 respectively, to restrict the movement of the first reel 30 along the axis; the two ends of the second reel 40 abut against the main unit 10 and the housing 20 respectively, to restrict the movement of the second reel 40 along the axis. In this way, the first reel 30 and the second reel 40 can maintain axial stability, further improving the smoothness of the ribbon transmission.

[0092] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" means at least two, for example, two, three, four, etc. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0093] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A printer, characterized in that, include: Host; A ribbon cartridge is detachably mounted on the main unit. The ribbon cartridge includes a cartridge body, a first reel, and a second reel. Both the first reel and the second reel are rotatably mounted on the cartridge body, and the first reel and the second reel are radially spaced apart. A first limiting structure is disposed on the host, the first limiting structure being configured to limit at least one of the first reel and the second reel in the radial direction.

2. The printer according to claim 1, characterized in that, The box body is provided with a first through hole, the first spool passes through the first through hole and is clearance-fitted with the first through hole; and / or The box body is provided with a second through hole, and the second scroll passes through the second through hole and is fitted with the second through hole with a clearance.

3. The printer according to claim 1, characterized in that, The first limiting structure includes a first limiting hole disposed in the main unit, and the first spool is limited and engaged with the first limiting hole to limit the first spool in the radial direction; and / or The first limiting structure includes a second limiting hole disposed on the host, and the second spool is limited and engaged with the second limiting hole so that the second spool is limited in the radial direction.

4. The printer according to claim 1, characterized in that, The box body includes a first shell and a second shell spaced apart from each other, the first scroll is rotatably disposed on the first shell, and the second scroll is rotatably disposed on the second shell.

5. The printer according to claim 4, characterized in that, The first housing and the second housing are integrally formed, or the first housing and the second housing are separately formed.

6. The printer according to claim 4, characterized in that, The printer also includes a limiting protrusion disposed on the host, the opposite sides of the limiting protrusion abutting against the first housing and the second housing respectively, so as to prevent the first housing and the second housing from getting close to each other.

7. The printer according to claim 1, characterized in that, A second limiting structure is provided between the host and the box, and the second limiting structure is configured to prevent relative displacement between the box and the host.

8. The printer according to claim 7, characterized in that, The number of the second limiting structures is multiple, and the multiple second limiting structures are arranged at intervals along the circumference of the first scroll; and / or, the multiple second limiting structures are arranged at intervals along the circumference of the second scroll.

9. The printer according to claim 7, characterized in that, The second limiting structure includes a limiting post and a limiting groove that are interlocked and cooperate with each other. The limiting post is located in one of the main unit and the box, and the limiting groove is located in the other of the main unit and the box.

10. The printer according to claim 9, characterized in that, The main unit has a receiving cavity and an inlet communicating with the receiving cavity, and the box body is inserted into the receiving cavity through the inlet; The limiting groove is located on the host and is connected to the inlet.

11. The printer according to claim 9, characterized in that, The number of the limiting grooves and the limiting posts are both multiple, and the multiple limiting grooves and the multiple limiting posts correspond one-to-one; A portion of the limiting grooves are spaced apart circumferentially along the first reel, while another portion of the limiting grooves are spaced apart circumferentially along the second reel; or A portion of the limiting posts are spaced apart circumferentially along the first scroll, while another portion of the limiting posts are spaced apart circumferentially along the second scroll.

12. The printer according to claim 9, characterized in that, The number of the limiting grooves and the limiting posts are both multiple, and the multiple limiting grooves and the multiple limiting posts correspond one-to-one; A portion of the limiting grooves are spaced apart along the axial direction of the first reel, while another portion of the limiting grooves are spaced apart along the axial direction of the second reel; or One portion of the limiting posts are spaced apart along the axial direction of the first reel, while the other portion of the limiting posts are spaced apart along the axial direction of the second reel.

13. The printer according to claim 9, characterized in that, The box body includes a first shell and a second shell that are spaced apart from each other, the first scroll is rotatably disposed in the first shell, and the second scroll is rotatably disposed in the second shell; The number of the limiting grooves and the limiting posts are both multiple, and the multiple limiting grooves and the multiple limiting posts correspond one-to-one; One portion of the limiting groove is disposed in the first housing, and the other portion of the limiting groove is disposed in the second housing; or One portion of the limiting posts are disposed in the first housing, and the other portion of the limiting posts are disposed in the second housing.

14. The printer according to claim 9, characterized in that, The limiting post is located on the box body, and the box body is provided with reinforcing ribs, which are connected at the junction of the box body and the limiting post.

15. The printer according to claim 14, characterized in that, The number of the reinforcing ribs is multiple; At least a portion of the reinforcing ribs extend along a first direction, which is parallel to the plane containing the axis of the first spool and the axis of the second spool, and is perpendicular to the axis of the first spool and the axis of the second spool. and / or At least a portion of the reinforcing ribs extend along a second direction, which is perpendicular to the plane containing the axes of the first and second reels.

16. The printer according to claim 1, characterized in that, The main unit is provided with a receiving cavity; the box body is detachably installed in the receiving cavity; A guide structure is provided between the host and the housing to guide the housing into and out of the accommodating cavity.

17. The printer according to claim 16, characterized in that, The guiding structure includes a guide groove and a guide protrusion that slide and adapt to each other. The guide groove is provided in one of the main unit and the housing, and the guide protrusion is provided in the other of the main unit and the housing.

18. The printer according to claim 1, characterized in that, The two ends of the first reel abut against the main unit and the housing, respectively, to restrict the movement of the first reel along the axis; and / or The two ends of the second reel abut against the main unit and the housing respectively, thereby restricting the movement of the second reel along the axis.

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