Label printer

Abstract

According to the label printer, a printing assembly is provided with a paper feeding channel, a paper clamping assembly comprises a mounting base, the mounting base is provided with a paper bin used for containing label paper, the paper bin communicates with the paper feeding channel, and the wall face, limited by the mounting base, of the paper bin comprises a paper bin bottom wall face and a guide face connected to the paper bin bottom wall face. Wherein the paper feeding channel and the bottom wall face of the paper bin are arranged in a staggered mode in the thickness direction of the label printer, the guide face extends from the bottom wall face of the paper bin to the paper feeding channel and forms a continuous supporting face to be attached to the moving track of label paper, and the label paper is prevented from being warped or folded due to large-area suspension. The gradient of the guide surface is controlled, so that the transition of the label paper from the paper bin to the paper feeding channel is smoother, the paper feeding resistance is greatly reduced, the problem of unsmooth paper feeding is solved, and the risk of paper outlet clamping stagnation of the label printer is reduced.

Description

Technical Field

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

[0002] During the operation of a label printer, label paper is fed from the paper tray to the printing unit and printed through the paper path of the printing unit. In related technologies, due to the mechanical structure of the label printer, the label paper's transport path experiences abrupt changes in direction, causing localized stress concentration on the label paper. This leads to increased paper feeding resistance, paper misalignment or bending deformation, and ultimately paper jams, negatively impacting printing efficiency and equipment operational stability. Utility Model Content

[0003] This application provides a label printer that can solve the problem of uneven paper feeding in label printers.

[0004] This application provides a label printer, which includes a body, a printing component, and a paper clamping component. The printing component has a paper feeding channel, and the paper clamping component includes a mounting base disposed on the body. The mounting base has a paper tray for receiving label paper, and the paper tray communicates with the paper feeding channel. The mounting base defines the wall of the paper tray, including a bottom wall of the paper tray and a guide surface connected to the bottom wall of the paper tray. In the thickness direction of the label printer, the paper feeding channel is located on one side of the bottom wall of the paper tray and is offset from the bottom wall of the paper tray. The guide surface extends from the bottom wall of the paper tray to the paper feeding channel and supports the label paper to guide the label paper in the paper tray to smoothly enter the paper feeding channel. In the thickness direction of the label printer, the size of the guide surface is H1, and in the length direction of the label printer, the size of the guide surface is H2, where 1 / 2 ≤ H1 / H2 ≤ 3 / 2.

[0005] In some embodiments, the guide surface is at least partially inclined in the direction from the bottom wall of the paper tray toward the paper feed channel; and / or, the guide surface is at least partially curved in the direction from the bottom wall of the paper tray toward the paper feed channel and the curvature of the curved surface gradually decreases.

[0006] In some embodiments, the slope of the guiding surface is α, where α satisfies: XX≤α≤XX.

[0007] In some embodiments, the label printer further includes a ribbon cartridge comprising a first ribbon spool and a second ribbon spool for winding the ribbon; the housing has a receiving cavity for accommodating the first ribbon spool and the second ribbon spool, the receiving cavity communicating with the paper feed path; in the thickness direction of the label printer, a portion of the receiving cavity overlaps with the guide surface of the mounting base.

[0008] In some embodiments, the label printer further includes a ribbon cartridge comprising a first ribbon spool and a second ribbon spool for winding the ribbon. The axial directions of both the first and second ribbon spools are parallel to the width direction of the label printer and are arranged side-by-side along the length direction of the label printer. In the thickness direction of the label printer, the first ribbon spool overlaps with the guide surface of the mounting base, and the distance from the first ribbon spool to the printing assembly is greater than the distance from the second ribbon spool to the printing assembly.

[0009] In some embodiments, along the length of the label printer, the paper feed channel is located between the first ribbon shaft and the second ribbon shaft; the first ribbon shaft is a ribbon unwinding shaft, and the second ribbon shaft is a ribbon rewinding shaft. The ribbon unwinding shaft is used to release the ribbon into the paper feed channel, and the ribbon rewinding shaft is used to rewind the ribbon that has passed through the paper feed channel.

[0010] In some embodiments, the ribbon cartridge includes a first sleeve fitted over the outside of the first ribbon shaft; the body also includes a main housing and a ribbon cartridge bracket, the ribbon cartridge bracket supporting the ribbon cartridge and mounting it to the main housing, the ribbon cartridge bracket including a support portion for the first sleeve to rest against, and the distance from the support portion to the main housing along the thickness direction of the label printer is d, where d satisfies: 0 < d ≤ 4 mm.

[0011] In some embodiments, the printing assembly includes a print head and a print roller. Along the thickness direction of the label printer, the print head and the print roller are spaced apart, and a paper feeding channel is formed between the print head and the print roller. Along the length direction of the label printer, the print head is located between the first ribbon shaft and the second ribbon shaft, and the print head is used to support the ribbon in the paper feeding channel to contact the label paper.

[0012] In some embodiments, the label printer further includes a cover, the printing roller is disposed on the cover, the cover is rotatably disposed on the body, and in the closed state of the cover being closed to the body, the paper path is formed between the printing roller and the print head.

[0013] In some embodiments, the mounting base further includes a mating wall connected to the guide surface, a portion of which is located in the paper feed channel and is used to guide the label paper resting against the guide surface into the paper feed channel.

[0014] In some embodiments, the curvature of the guide surface gradually decreases from the bottom wall of the paper tray toward the paper feeding channel; the mounting base also includes a mating wall connected to the guide surface, the mating wall being planar, and at the connection between the mating wall and the guide surface, the mating wall being tangent to the guide surface.

[0015] In some embodiments, the bottom wall of the paper tray and the guide surface are connected in an arc-shaped transition.

[0016] In some embodiments, the mounting base further includes a plurality of support protrusions disposed on the mating wall, the plurality of support protrusions being spaced apart along the width direction of the label printer.

[0017] In some embodiments, the paper clamping assembly further includes two clamping members, both of which are disposed in the paper tray and are arranged side by side along the width direction of the label printer and movably mounted on the mounting base. The area between the two clamping members is used to mount the label paper.

[0018] In some embodiments, the clamping member includes a clamping portion and a guiding portion, the paper tube of the label is rotatably mounted on the clamping portion, and the clamping portion is in contact with the bottom wall of the paper compartment, and the guiding portion is in contact with the guiding surface.

[0019] In some embodiments, the label printer further includes a cover rotatably disposed on the body, and in a closed state where the cover is closed to the body, the cover and the body enclose a label outlet, the label outlet communicating with the paper feed channel, and in the thickness direction of the label printer, the label outlet is located on the side of the paper feed channel away from the guide surface.

[0020] According to an embodiment of this application, a label printer has a paper feed channel and a paper tray bottom wall that are staggered in the thickness direction of the label printer. This creates a guide surface extending from the bottom wall of the paper tray to the paper feed channel. The guide surface forms a continuous support surface to conform to the movement trajectory of the label paper, preventing the label paper from warping or folding due to large areas of suspension. Furthermore, this application controls the slope of the guide surface, ensuring that the dimensions H1 of the guide surface in the thickness direction and H2 in the length direction of the label printer satisfy 1 / 2 ≤ H1 / H2 ≤ 3 / 2. This makes the transition of the label paper from the paper tray to the paper feed channel smoother, reducing local stress concentration when the paper bends, resulting in a more uniform distribution of friction. This reduces paper feeding resistance, improves uneven paper feeding, reduces the risk of paper rebound or deviation caused by steep slopes, and lowers the risk of paper jamming in the label printer. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the structure of a label printer in the open state according to an embodiment of this application;

[0023] Figure 2 This is a cross-sectional view of a label printer according to an embodiment of this application;

[0024] Figure 3 This is a partial cross-sectional schematic diagram of a label printer according to an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the label printer in the closed state according to an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of another open state of a label printer according to an embodiment of this application.

[0027] 1. Label printer; 2. Label paper;

[0028] 10. Body; 100. Receiving cavity; 110. Dispensing port; 11. Main housing; 12. Carbon ribbon box bracket; 121. Supporting part;

[0029] 20. Printing assembly; 200. Paper path; 21. Print head; 22. Printing roller;

[0030] 30. Paper clamping assembly; 31. Mounting base; 310. Bottom wall of paper tray; 320. Guide surface; 330. Connecting wall; 32. Clamping component; 321. Clamping part; 322. Guide part;

[0031] 40. Carbon ribbon box; 41. First carbon ribbon shaft; 42. Second carbon ribbon shaft; 43. First sleeve; 44. Second sleeve;

[0032] 50. Engine cover;

[0033] X: Thickness direction of the label printer; Y: Length direction of the label printer; Z: Width direction of the label printer. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0035] In related label printers, label paper is fed from the paper tray to the printing unit and then through the paper feed path to complete the printing output. The inventors have discovered that because the paper tray and the paper feed path are connected vertically or at a large angle, a steep slope is formed in the label paper's transport path. This causes a sharp change in the label paper's movement direction, increases paper feed resistance, and easily induces paper posture deviation, leading to paper jams. This not only affects printing operations but may also cause printer malfunctions. Based on this, this application provides a label printer.

[0036] Please see Figures 1-2 The label printer 1 of this application embodiment includes a body 10, a printing component 20, and a paper clamping component 30. The printing component 20 has a paper feed channel 200. The paper clamping component 30 includes a mounting base 31 disposed on the body 10. The mounting base 31 has a paper tray for accommodating label paper 2. The paper tray communicates with the paper feed channel 200. The mounting base 31 defines the wall surface of the paper tray, including a bottom wall surface 310 of the paper tray and a guide surface 320 connected to the bottom wall surface 310 of the paper tray. In the thickness direction X of the label printer 1, the paper feed channel 200 is located on one side of the bottom wall surface 310 of the paper tray, and the paper feed channel 200 is offset from the bottom wall surface 310 of the paper tray. The guide surface 320 extends from the bottom wall surface 310 of the paper tray to the paper feeding channel 200. The guide surface 320 forms a continuous support surface to conform to the movement trajectory of the label paper 2. The guide surface 320 supports the label paper 2 and guides the label paper 2 in the paper tray to smoothly enter the paper feeding channel 200, reducing the possibility of the label paper 2 warping or folding due to large areas of suspension.

[0037] like Figure 3 As shown, in the thickness direction X of the label printer 1, the size of the guide surface 320 is H1, and in the length direction Y of the label printer 1, the size of the guide surface 320 is H2, where 1 / 2 ≤ H1 / H2 ≤ 3 / 2. This application controls the slope of the guide surface 320, ensuring that its size meets the above-mentioned range. This makes the transition of the label paper 2 from the paper tray to the paper feeding channel 200 smoother, reducing local stress concentration when the label paper 2 bends, resulting in a more uniform distribution of friction. This reduces paper feeding resistance, improves paper feeding smoothness, reduces the risk of paper rebound or deviation caused by steep slopes, and reduces the risk of paper jamming in the label printer 1.

[0038] Furthermore, when H1 / H2 > 3 / 2, the guide surface 320 is too steep, and the label paper 2 is prone to intermittent detachment from the guide surface 320, causing localized paper suspension, wrinkles, or warping, thus disrupting paper feeding stability. When H1 / H2 < 1 / 2, the guide surface 320 is too gentle, and the X-dimensional dimension of the guide surface 320 in the thickness direction of the label printer 1 is large. The increased length of the guide surface 320 increases the contact area between it and the label paper 2, thereby increasing sliding friction resistance and offsetting the drag reduction effect of the slope optimization, leading to a decrease in paper feeding smoothness.

[0039] In actual manufacturing, the guide surface 320 can be constructed as an inclined surface, a curved surface, or a combination of inclined and curved surfaces. In some embodiments, the guide surface 320 is at least partially inclined in the direction from the bottom wall surface 310 of the paper tray toward the paper path 200. Alternatively, the guide surface 320 may be at least partially curved in the direction from the bottom wall surface 310 of the paper tray toward the paper path 200, with the curvature gradually decreasing. For example, the guide surface 320 may be entirely inclined, meaning it extends at an angle to the length direction X of the label printer 1 and is flat. The inclined surface provides a single guiding path, helping to reduce the deviation of the label paper 2's posture, and the manufacturing complexity of the inclined surface is low. Another example is that the guide surface 320 may be entirely curved, meaning it uses a gradually changing curvature surface. The initial section has a larger curvature to quickly adjust the posture of the label paper 2, and the curvature decreases in the subsequent section to achieve a smooth transition to the paper path 200. For example, the guide surface 320 is composed of a combination of inclined surface segments and curved surface segments. The initial segment uses curved surface to buffer stress, and the subsequent segment uses inclined surface for precise guidance.

[0040] In some embodiments, the slope of the guide surface 320 is α, where α satisfies: 1 / 3 ≤ α ≤ 3 / 2. It should be noted that the slope of the guide surface 320 refers to the slope of a point on the guide surface 320 along the label paper 2's transport path. Taking the guide surface 320 as an inclined plane as an example, the slope of a point on the inclined plane is α, where α satisfies: 1 / 3 ≤ α ≤ 3 / 2. Taking the guide surface 320 as entirely curved as an example, a plane perpendicular to the width direction Z of the label printer 1 is defined as the first plane. The slope of the tangent line at any point on the projection curve of the guide surface 320 within the first plane is no higher than the upper limit 3 / 2 and no lower than the lower limit 1 / 3. The guide surface 320 forms a gently curved surface to reduce local stress concentration when the label paper 2 bends, thus improving paper feeding smoothness.

[0041] In some embodiments, the bottom wall 310 of the paper tray and the guide surface 320 are connected in an arc shape. The arc shape provides a smooth and continuous movement path for the label paper 2, which can reduce the resistance of the label paper 2 during the movement from the bottom wall 310 of the paper tray to the guide surface 320, maintain the stability and continuity of the movement of the label paper 2, and reduce the occurrence of problems such as paper jams.

[0042] In some embodiments, the mounting base 31 further includes a mating wall 330 connected to the guide surface 320, a portion of which is located in the paper feed channel 200. The mating wall 330 is used to guide the label paper 2 resting against the guide surface 320 into the paper feed channel 200.

[0043] In some embodiments, from the bottom wall 310 of the paper tray toward the paper path 200, the guide surface 320 is curved with a gradually decreasing curvature, and the docking wall 330 is flat. At the connection between the docking wall 330 and the guide surface 320, the docking wall 330 is tangent to the guide surface 320. The label paper 2 smoothly transitions from the guide surface 320 to the docking wall 330, avoiding paper offset and jamming caused by abrupt path changes. The label paper 2 has a stable posture when entering the paper path 200, reducing printing misalignment and blurring problems.

[0044] In some embodiments, the mounting base 31 further includes a plurality of support protrusions disposed on the mating wall 330. The plurality of support protrusions are spaced apart along the width direction Z of the label printer 1, and the plurality of support protrusions form evenly distributed support points. Compared with the label paper 2 being adhered to and supported on the mating wall 330, the contact area of ​​the label paper 2 when it is supported on the plurality of support protrusions is smaller, reducing sliding friction resistance. At the same time, an airflow channel is formed between adjacent support protrusions, reducing the risk of adhesion between the label paper 2 and the mating wall 330.

[0045] The label printer 1 also includes a ribbon cartridge 40 for providing ribbon. The ribbon cartridge 40 includes a first ribbon shaft 41 and a second ribbon shaft 42 for winding the ribbon. The body 10 has a receiving cavity 100 for accommodating the first ribbon shaft 41 and the second ribbon shaft 42. The receiving cavity 100 communicates with the paper feed channel 200, such that a portion of the ribbon is exposed in the paper feed channel 200, so that the printing assembly 20 can apply heat and pressure to the ribbon and transfer the ink on the ribbon to the surface of the label paper.

[0046] In some embodiments, a portion of the receiving cavity 100 overlaps with the guide surface 320 of the mounting base 31 in the thickness direction X of the label printer 1. This spatial reuse in the thickness direction X reduces the overall size of the label printer 1 in the length direction Y, contributing to the compactness of the label printer 1. In actual manufacturing, the receiving cavity 100 and the guide surface 320 can be formed in the same component. For example, a portion of one sidewall of the label printer 1 can be used to form the guide surface 320, while another portion can define the receiving cavity 100. This reduces the number of components and lowers assembly complexity. Of course, the receiving cavity 100 and the guide surface 320 can also be formed in different components for independent maintenance.

[0047] In some embodiments, the axial directions of both the first ribbon shaft 41 and the second ribbon shaft 42 are parallel to the width direction Z of the label printer 1, and the first ribbon shaft 41 and the second ribbon shaft 42 are arranged side by side along the length direction Y of the label printer 1. The first ribbon shaft 41 and the second ribbon shaft 42 rotate in the same direction, thus transporting the ribbon from one ribbon shaft to the other. In the thickness direction X of the label printer 1, the first ribbon shaft 41 overlaps with the guide surface 320 of the mounting base 31, and the distance from the first ribbon shaft 41 to the printing assembly 20 is greater than the distance from the second ribbon shaft 42 to the printing assembly 20. The ribbon cartridge 40 is inclined in the same direction as the guide surface 320, and the ribbon naturally extends along the inclined direction to the paper path 200, reducing the ribbon bending angle and lowering the transport resistance.

[0048] In the longitudinal direction Y of the label printer 1, the paper feed path 200 is located between the first ribbon shaft 41 and the second ribbon shaft 42. One of the ribbon shafts in the ribbon cartridge 40 is a ribbon take-up shaft, and the other is a ribbon unwind shaft. The ribbon unwind shaft is used to release the ribbon into the paper feed path 200, and the ribbon take-up shaft is used to wind up the ribbon that has passed through the paper feed path 200. Under the action of the printing assembly 20, the ribbon comes into contact with the label paper 2 and completes the thermal transfer.

[0049] In some embodiments, the first ribbon shaft 41 is a ribbon unwinding shaft, and the second ribbon shaft 42 is a ribbon rewinding shaft. The ribbon moves in the same direction as the label paper 2 within the paper feed channel 200. This makes it easier to achieve precise matching of the ribbon and label paper 2's transport speeds, reducing printing misalignment caused by speed differences. The unidirectional movement also ensures more uniform force on the ribbon during transport, reducing the risk of ribbon wrinkles or deformation and improving print quality consistency. Optionally, the first ribbon shaft 41 is a ribbon rewinding shaft, and the second ribbon shaft 42 is a ribbon unwinding shaft. The ribbon moves in the opposite direction to the label paper 2 within the paper feed channel 200. The heat and pressure from the printing assembly 20 cause relative sliding friction between the ribbon and label paper 2's contact surfaces, which helps to evenly transfer ink and reduce printing blurring.

[0050] The ribbon cartridge 40 includes a first sleeve 43 and a second sleeve 44. The first sleeve 43 is fitted onto the outside of the first ribbon shaft 41, and the second sleeve 44 is fitted onto the outside of the second ribbon shaft 42. Both sleeves 43 and 44 are used to hold the ribbon. Both sleeves 43 and 44 have openings. A portion of the ribbon is wound around the first ribbon shaft 41, passing through the openings of the first sleeve 43 and the second sleeve 44, and extending onto the second ribbon shaft 42. During printing, the first ribbon shaft 41 and the second ribbon shaft 42 rotate in the same direction to transfer and transport the ribbon.

[0051] In some embodiments, the body 10 further includes a main housing 11 and a ribbon cartridge support 12. The ribbon cartridge support 12 is mounted on the main housing 11 and supports the ribbon cartridge 40. The ribbon cartridge support 12 serves as a partial wall surface for the ribbon cartridge 40 to rest against, forming part of the accommodating cavity 100. The ribbon cartridge support 12 includes a support portion 121, which is used for the first sleeve 43 to rest against, i.e., the support portion 121 is located below the first sleeve 43. Along the thickness direction X of the label printer 1, the distance from the support portion 121 to the main housing 11 is d, where d satisfies: 0 < d ≤ 4 mm. By controlling the distance d to meet the above range, the label printer 1 has a more compact structure in the thickness direction X. The close arrangement of the ribbon cartridge support 12 and the main housing 11 enhances the overall rigidity of the label printer 1 and suppresses the resonance phenomenon caused by the rotation of the ribbon shaft during high-speed printing.

[0052] In this embodiment, the printing assembly 20 includes a print head 21 and a printing roller 22. Along the thickness direction X of the label printer 1, the print head 21 and the printing roller 22 are spaced apart. During printing, the print head 21 and the printing roller 22 together clamp the label paper 2 to form a paper feeding channel 200. Along the length direction Y of the label printer 1, the print head 21 is located between the first ribbon shaft 41 and the second ribbon shaft 42. When the ribbon cartridge 40 is installed in the receiving cavity 100, at least a portion of the ribbon is exposed within the paper feeding channel 200, and the print head 21 is able to support the ribbon within the paper feeding channel 200 to contact the label paper 2.

[0053] In some embodiments, the label printer 1 further includes a cover 50, which is rotatably mounted on the body 10. For example, the cover 50 and the body 10 are rotatably connected via hinges, slide rails, shafts, or other structures. The user operates the label paper 2 in the paper tray by opening and closing the cover. The printing roller 22 is mounted on the cover 50. As the cover 50 is opened and closed, the printing roller 22 moves accordingly. In the closed state, with the cover 50 closed to the body 10, the printing roller 22 cooperates with the print head 21 to form a paper path 200. The mounting of the printing roller 22 on the cover 50 facilitates cleaning and replacement by the user, improving the maintenance convenience of the label printer 1.

[0054] Please see Figure 4When the cover 50 is closed to the body 10, the cover 50 and the body 10 together form a label outlet 110, which is connected to the paper feed path 200. The label outlet 110 is used to output the label paper 2, minimizing the output path of the label paper 2 and improving label output efficiency. After the label paper 2 is printed within the paper feed path 200, it is conveyed from the label outlet 110 to the outside of the label printer 1. In the thickness direction X of the label printer 1, the label outlet 110 is located on the side of the paper feed path 200 away from the guide surface 320, so that the label paper 2 is output in a straight line along the paper feed path 200 after printing, reducing the risk of paper bending or jamming caused by path turns. In actual manufacturing, the size of the label outlet 110 can be designed according to the width and thickness of the label paper 2. Optionally, the label outlet 110 can be integrated with a dust cover or sealing strip to further improve the operational stability of the equipment in harsh environments (such as dust and high humidity).

[0055] In this embodiment, the paper clamping assembly 30 further includes two clamping members 32, both of which are located in the paper tray. The two clamping members 32 are arranged side by side along the width direction Z of the label printer 1, and are movably mounted on the mounting base 31. The clamping members 32 can be adjusted in position by sliding, elastic extension, etc., to adapt to label paper 2 of different widths. The area between the two clamping members 32 is used to install the label paper 2, and its width can be flexibly adjusted according to the size of the label paper 2 to ensure that the label paper 2 is centered and stably transported in the paper tray.

[0056] Please see Figure 5 The clamping member 32 includes a clamping part 321 and a guide part 322. The paper tube of the label paper 2 is rotatably mounted on the clamping part 321, and the clamping part 321 contacts the bottom wall surface 310 of the paper tray. The guide part 322 contacts the guide surface 320. It is understood that the shape of the side wall surface of the clamping part 321 facing the bottom wall surface 310 of the paper tray is adapted to the shape of the bottom wall surface 310 of the paper tray, and the shape of the side wall surface of the guide part 322 facing the guide surface 320 is adapted to the shape of the guide surface 320, so as to avoid interference between the clamping member 32 and the mounting base 31 when the label printer 1 moves along the width direction.

[0057] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this 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. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A label printer characterized by comprising: The label printer comprises: a body; a printing assembly having a paper passing channel; and a paper clamping assembly comprising a mounting seat provided on the body, the mounting seat having a paper bin for accommodating label paper, the paper bin being in communication with the paper passing channel, the mounting seat defining a wall surface of the paper bin including a paper bin bottom wall surface and a guide surface connected to the paper bin bottom wall surface; wherein, in the thickness direction of the label printer, the paper passing channel is located at one side of the paper bin bottom wall surface and is arranged in a staggered manner with the paper bin bottom wall surface; the guide surface extends from the paper bin bottom wall surface to the paper passing channel, the guide surface being used to support the label paper to guide the label paper in the paper bin to smoothly enter the paper passing channel, in the thickness direction of the label printer, the size of the guide surface is H1, and in the length direction of the label printer, the size of the guide surface is H2, 1 / 2≤H1 / H2≤3 / 2.

2. The label printer according to claim 1, wherein in the direction from the paper bin bottom wall surface to the paper passing channel, the guide surface is at least partially a slope surface; and / or in the direction from the paper bin bottom wall surface to the paper passing channel, the guide surface is at least partially a curved surface and the curvature of the curved surface gradually decreases.

3. The label printer of claim 1, wherein, The label printer further comprises a ribbon cartridge, the ribbon cartridge comprising a first ribbon shaft and a second ribbon shaft for winding a ribbon; the body has a receiving cavity for accommodating the first ribbon shaft and the second ribbon shaft, the receiving cavity being in communication with the paper passing channel; in the thickness direction of the label printer, part of the receiving cavity overlaps with the guide surface of the mounting seat.

4. The label printer of claim 1, wherein, The label printer further comprises a ribbon cartridge, the ribbon cartridge comprising a first ribbon shaft and a second ribbon shaft for winding a ribbon, the axial directions of the first ribbon shaft and the second ribbon shaft both being parallel to the width direction of the label printer and being arranged side by side in the length direction of the label printer; in the thickness direction of the label printer, the first ribbon shaft overlaps with the guide surface of the mounting seat, and the distance from the first ribbon shaft to the printing assembly is greater than the distance from the second ribbon shaft to the printing assembly.

5. The label printer according to claim 4, wherein in the length direction of the label printer, the paper passing channel is arranged between the first ribbon shaft and the second ribbon shaft; the first ribbon shaft is a ribbon unwinding shaft, and the second ribbon shaft is a ribbon winding shaft, the ribbon unwinding shaft being used to release the ribbon to the paper passing channel, and the ribbon winding shaft being used to wind the ribbon passing through the paper passing channel.

6. The label printer according to claim 4, wherein the ribbon cartridge comprises a first sleeve, the first sleeve being sleeved on the outside of the first ribbon shaft; the body further comprises a main housing and a ribbon cartridge support, the ribbon cartridge support being used to support the ribbon cartridge and being mounted on the main housing, the ribbon cartridge support comprising a bearing part for bearing the first sleeve, and in the thickness direction of the label printer, the distance from the bearing part to the main housing is d, d satisfying: 0 7. The label printer of claim 4, wherein, The printing assembly includes a print head and a print roller. Along the thickness direction of the label printer, the print head and the print roller are spaced apart, and a paper feeding channel is formed between the print head and the print roller. Along the length of the label printer, the print head is located between the first ribbon shaft and the second ribbon shaft, and the print head is used to support the ribbon in the paper feed channel to contact the label paper.

8. The label printer of claim 7, wherein, The label printer also includes a cover, the printing roller is disposed on the cover, the cover is rotatably disposed on the body, and in the closed state of the cover being closed to the body, the paper feeding channel is formed between the printing roller and the print head.

9. The label printer of claim 1, wherein, The mounting base also includes a mating wall surface connected to the guide surface, a portion of which is located in the paper feeding channel and is used to guide the label paper supported on the guide surface into the paper feeding channel.

10. The label printer of claim 1, wherein, The curvature of the guide surface gradually decreases from the bottom wall of the paper bin towards the paper feeding channel; The mounting base also includes a mating wall surface connected to the guide surface. The mating wall surface is planar, and at the connection point between the mating wall surface and the guide surface, the mating wall surface is tangent to the guide surface.

11. The label printer of claim 10, wherein, The bottom wall of the paper bin is connected to the guide surface in an arc-shaped transition.

12. The label printer of claim 10, wherein, The mounting base also includes a plurality of support protrusions disposed on the mating wall, the plurality of support protrusions being spaced apart along the width direction of the label printer.

13. The label printer of claim 1, wherein, The paper clamping assembly further includes two clamping members, both of which are located in the paper tray. The two clamping members are arranged side by side along the width direction of the label printer and are movably mounted on the mounting base. The area between the two clamping members is used to install the label paper.

14. The label printer of claim 13, wherein, The clamping member includes a clamping part and a guiding part. The paper tube of the label paper is rotatably mounted on the clamping part, and the clamping part is in contact with the bottom wall of the paper compartment, while the guiding part is in contact with the guiding surface.

15. The label printer of claim 1, wherein, The label printer also includes a cover, which is rotatably disposed on the body. When the cover is closed to the body, the cover and the body form a label outlet. The label outlet communicates with the paper feed channel, and in the thickness direction of the label printer, the label outlet is located on the side of the paper feed channel away from the guide surface.

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