Printer

Abstract

The application discloses a printer, comprising a rubber roller and a print head, the print head is arranged opposite to the rubber roller to form a printing channel for a consumable to pass through, the print head comprises a mounting seat, a heating head arranged on the mounting seat, and a heating wire arranged on the heating head, the mounting seat is provided with a blocking piece, the side of the heating head away from the mounting seat has a first surface facing the rubber roller, the blocking piece is arranged protruding towards the rubber roller relative to the first surface, and the heating wire is arranged on the first surface; wherein the rubber roller has a pressing state, in the pressing state, the rubber roller cooperates with the print head to press the consumable in the printing channel, the consumable in the printing channel at least partially covers the heating wire and at least partially covers the blocking piece; in the pressing state, when the consumable does not enter the printing channel, the rubber roller and the print head are in surface contact to form a contact area, the heating wire is located in the contact area, and the rubber roller and the blocking piece do not contact each other. The application can improve the problem that the heating wire does not heat the consumable sufficiently, resulting in poor printing effect.

Description

Technical Field

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

[0002] In related technologies, the rubber roller and printhead of a label printer are arranged opposite each other to form a printing channel. The rubber roller and printhead can cooperate to press the consumable material located in the printing channel, causing the heating wires on the printhead to heat the consumable material and achieve printing. However, due to limitations of the printhead and related structures, there is a problem of insufficient heating of the consumable material by the heating wires, resulting in poor printing quality. Utility Model Content

[0003] This application provides a printer that improves the problem of poor printing results caused by insufficient heating of consumables by the heating wire.

[0004] According to one aspect of this application, a printer is provided, including a rubber roller and a printhead. The printhead and the rubber roller are disposed opposite each other to form a printing channel through which consumables can pass. The printhead includes a mounting base, a heating head disposed on the mounting base, and a heating wire disposed on the heating head. The mounting base is provided with a blocking member. The side of the heating head away from the mounting base has a first surface facing the rubber roller. The blocking member protrudes towards the rubber roller relative to the first surface. The heating wire is disposed on the first surface. The rubber roller is in a pressing state. In the pressing state, the rubber roller cooperates with the printhead to press against the consumables located in the printing channel. The consumables located in the printing channel at least partially cover the heating wire and at least partially cover the blocking member. In the pressing state, when the consumables do not enter the printing channel, the rubber roller and the printhead form a contact area through surface contact. The heating wire is located within the contact area, and the rubber roller and the blocking member do not contact each other.

[0005] In some embodiments, the printing channel has a channel inlet and a channel outlet opposite each other along a first direction; the contact area has a size of 1mm-3mm along the first direction.

[0006] In some embodiments, the printing channel has a channel inlet and a channel outlet opposite each other along a first direction; the contact area includes a first area and a second area located on opposite sides of the heating line along the first direction, the first area having a dimension of 0.5mm-1.5mm along the first direction, and the second area having a dimension of 0.5mm-1.5mm along the first direction.

[0007] In some embodiments, the printing channel has a channel inlet and a channel outlet opposite each other along a first direction; the contact area includes a first area and a second area located on opposite sides of the heating line along the first direction, the second area being closer to the blocking member than the first area; the dimension of the first area along the first direction is smaller than the dimension of the second area along the first direction.

[0008] In some embodiments, the printing channel has a channel inlet and a channel outlet opposite each other along a first direction; the blocking member and the heating line are spaced apart along the first direction, and the distance between the blocking member and the heating line along the first direction is 1mm-2.5mm.

[0009] In some embodiments, the blocking element is closer to the channel outlet than the heating wire.

[0010] In some embodiments, the printing channel has a channel inlet and a channel outlet opposite each other along a first direction; the print head is disposed opposite the rubber roller along a second direction, which intersects the first direction; the blocking member protrudes toward the rubber roller along the second direction with a dimension greater than 0 and less than or equal to 0.1 mm relative to the first surface.

[0011] In some embodiments, the printer further includes a base and a mounting bracket having opposing first and second ends, the first end being connected to the base; the rubber roller being connected to the second end; wherein the first end is rotatably connected to the base to allow the rubber roller to move closer to or further away from the printhead.

[0012] In some embodiments, one of the mounting bracket and the rubber roller is provided with a mounting groove, and the other is provided with a rotating shaft; the rotating shaft is rotatably engaged with the mounting groove, and the gap between the rotating shaft and the groove wall of the mounting groove is 0.01mm-0.1mm.

[0013] In some embodiments, the mounting bracket is provided with the mounting groove, and the roller is provided with the rotating shaft; the mounting bracket is also provided with a guide inlet, which is disposed facing the printhead opening and communicating with the mounting groove; the guide inlet is gradually widened from one end of the guide inlet near the mounting groove to the other end of the guide inlet away from the mounting groove.

[0014] In some embodiments, one of the mounting bracket and the base is provided with a mounting hole, and the other is provided with a mounting shaft; the mounting shaft is rotatably engaged with the mounting hole, and the gap between the mounting shaft and the wall of the mounting hole is 0.01mm-0.1mm.

[0015] In some embodiments, one of the mounting bracket and the rubber roller is provided with a mounting groove, and the other is provided with a rotating shaft, the rotating shaft being rotatably engaged with the mounting groove; one of the mounting bracket and the base is provided with a mounting hole, and the other is provided with a mounting shaft, the mounting shaft being rotatably engaged with the mounting hole; the axial direction of the rotating shaft is parallel to the axial direction of the mounting shaft.

[0016] In some embodiments, the printer further includes a pressing member, one end of which is connected to the second end and the other end of which is connected to the base; in the pressing state, the pressing member applies a pressing force to the second end toward the print head.

[0017] In some embodiments, the pressing member includes an elastic member, one end of which is connected to the second end and the other end of which is connected to the base; in the pressing state, the elastic member is compressed and applies a rebound force toward the print head to the second end.

[0018] In some embodiments, a plurality of the pressing members are arranged along the axial direction of the rubber roller.

[0019] The printer in this embodiment of the application uses a protruding blocking member on the print head to lift the consumable portion located in the printing channel between the rubber roller and the print head, reducing interference between the consumable and the print head during consumable transport and making consumable transport smoother. Based on this, the structure of the rubber roller and the print head is further adjusted so that when the rubber roller and the print head cooperate to press against the consumable, the consumable located in the printing channel can cover the heating wire and the blocking member. When the consumable is not in the printing channel, there is surface contact between the rubber roller and the print head, and the heating wire is located in the surface contact area. The rubber roller and the blocking member do not contact each other, preventing the rubber roller from being lifted by the blocking member. This creates a mutual pressing force between the rubber roller and the heating wire to ensure a good heating effect, thereby improving the printing effect. Attached Figure Description

[0020] 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.

[0021] Figure 1 A schematic diagram of the printer structure in one embodiment of this application is shown.

[0022] Figure 2 A schematic diagram of the rubber roller in a pressing state according to an embodiment of this application is shown.

[0023] Figure 3A schematic diagram of the rubber roller in other states according to an embodiment of this application is shown.

[0024] Figure 4 A schematic diagram of the rubber roller in one embodiment of this application is shown from another perspective.

[0025] Figure 5 A schematic diagram of the rubber roller in one embodiment of this application is shown from another perspective.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Printer;

[0028] 10. Rubber roller; 11. Channel inlet; 12. Channel outlet; 13. Contact area; 131. First zone; 132. Second zone;

[0029] 20. Printhead; 21. Mounting base; 211. Blocking component; 22. Heating head; 221. First surface; 23. Heating wire;

[0030] 30. Base;

[0031] 40. Mounting bracket; 40a. First end; 40b. Second end; 41. Mounting slot; 411. Rotating shaft; 412. Guide inlet; 42. Mounting hole; 421. Mounting shaft;

[0032] 50. Pressing parts;

[0033] X, the first direction; Y, the second direction. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] In related technologies, the rubber roller and print head of a label printer are arranged opposite each other to form a printing channel. The rubber roller and print head can cooperate to press against the consumables located in the printing channel, so that the heating wire on the print head heats the consumables to achieve printing.

[0037] Label rolls are a common consumable, typically consisting of a spool and label paper wound around it. The label paper includes a backing paper and printing paper adhered to the backing paper. During use, the free end of the label paper moves out in the output direction or returns in the opposite direction. During output and return, the printing paper comes into contact with the edge of the print head, which may cause the printing paper to peel off from the backing paper, resulting in a paper jam.

[0038] To improve the problem of paper jams caused by paper peeling, related technologies include a protruding blocking component on the print head. This component lifts a portion of the label paper off the surface of the print head, adjusts the extension direction of the corresponding part of the label paper and the edge of the print head, reduces the friction between the label paper and the edge of the print head, and thus reduces the risk of the paper being peeled off by the edge of the print head.

[0039] However, the setting of the blocking component may interfere with the rubber roller, causing the rubber roller to be partially lifted by the blocking component when it is in contact with the print head to press against the filament located in the printing channel. This prevents the rubber roller from generating sufficient interaction force with the heating wire on the print head, resulting in insufficient heating of the filament by the heating wire, thus leading to unclear printing.

[0040] To address the aforementioned issues, this application provides a printer that uses a protruding blocking element on the print head to lift the consumable portion within the printing channel between the rubber roller and the print head. This reduces interference between the consumable and the print head during transport, resulting in smoother consumable delivery. Furthermore, the structure of the rubber roller and print head is adjusted so that when the rubber roller and print head work together to press against the consumable, the consumable within the printing channel covers the heating wire and the blocking element. When the consumable is not in the printing channel, the rubber roller and print head are in surface contact, with the heating wire located within this contact area. The rubber roller and the blocking element do not contact each other, preventing the rubber roller from being lifted by the blocking element. This creates a mutual pressing force between the rubber roller and the heating wire, ensuring good heating and thus improving printing quality.

[0041] See Figures 1-3In some embodiments, the printer 1 includes a rubber roller 10 and a printhead 20. The rubber roller 10 and the printhead 20 are arranged opposite each other to form a printing channel through which consumables can pass. The printhead 20 includes a mounting base 21, a heating head 22 disposed on the mounting base 21, and a heating wire 23 disposed on the heating head 22. The mounting base 21 is in the shape of a regular plate, block, column, or irregular shape. The mounting base 21 is provided with a blocking member 211, which is integrally formed with the mounting base 21, for example. The side of the heating head 22 facing away from the mounting base 21 has a first surface 221 facing the rubber roller 10, and the blocking member 211 protrudes toward the rubber roller 10 relative to the first surface 221. The heating wire 23 is disposed on the first surface 221, and the extending direction of the heating wire 23 is, for example, perpendicular to the conveying direction of the consumables. Thus, during the printing process, the blocking member 211 can lift up the consumable part in the printing channel between the rubber roller 10 and the print head 20, reducing interference between the consumable and the print head 20 during the consumable transmission process, making the consumable transmission smoother.

[0042] Combined Figure 4 The rubber roller 10 has a pressing state. In this pressing state, the rubber roller 10 cooperates with the print head 20 to press against the consumable material located in the printing channel. The consumable material in the printing channel at least partially covers the heating wire 23 and at least partially covers the blocking member 211, thereby ensuring that the heating wire 23 is in contact with the consumable material while ensuring that the blocking member 211 partially lifts the consumable material. Furthermore, in the pressing state, when the consumable material has not entered the printing channel, the rubber roller 10 and the print head 20 form a contact area 13 through surface contact. The heating wire 23 is located within the contact area 13, and the rubber roller 10 and the blocking member 211 do not contact each other, thereby preventing the rubber roller 10 from being lifted by the blocking member 211. This results in a mutual pressing force between the rubber roller 10 and the heating wire 23, ensuring a good heating effect, thereby making the printing clearer and improving the printing effect.

[0043] Optionally, the edges of the blocking member 211 are rounded to reduce the force between the edge of the blocking member 211 and the consumable, thereby reducing the risk that the printing paper of the consumable, such as the label paper roll, will be peeled off by the blocking member 211.

[0044] Optionally, the consumable is transported along the first direction X, and the edges of the blocking member 211 on both sides of the first direction X are rounded, thereby further reducing the risk of the printing paper of the consumable, such as the label paper roll, being peeled off by the blocking member 211.

[0045] In some embodiments, the printing channel has a channel inlet 11 and a channel outlet 12 opposite to each other along a first direction X, and the contact area 13 has a size of 1mm-3mm along the first direction X, such as 1.5mm, 2mm or 2.5mm. Thus, the contact area between the rubber roller 10 and the print head 20 is large, allowing the rubber roller 10 to fully press against the heating wire 23, thereby improving the heating effect and thus improving the printing effect.

[0046] It is understandable that when the rubber roller 10 and the print head 20 press against each other, the size of the contact area 13 between them along the first direction X can be adjusted by adjusting the distance between the rubber roller 10 and the print head 20 under the pressing state, or by adjusting the material of the rubber roller 10.

[0047] Continue reading Figures 2-4 In some embodiments, the printing channel has a channel inlet 11 and a channel outlet 12 opposite to each other along a first direction X. The contact area 13 includes a first area 131 and a second area 132 located on opposite sides of the heating line 23 along the first direction X. The dimension of the first area 131 along the first direction X is 0.5mm-1.5mm, for example, 0.8mm, 1mm, or 1.2mm; the dimension of the second area 132 along the first direction X is also 0.5mm-1.5mm, for example, 0.8mm, 1mm, or 1.2mm. The dimensions of the first area 131 and the second area 132 along the first direction X may be the same or different. Thus, the contact area 13 has a large tolerance zone on opposite sides of the heating line 23 along the first direction X, effectively preventing interference between the roller 10 and the blocking member 211 when the position of the roller 10 relative to the print head 20 shifts, thereby ensuring printing quality.

[0048] In some embodiments, the printing channel has a channel inlet 11 and a channel outlet 12 opposite each other along a first direction X. The contact area 13 includes a first area 131 and a second area 132 located on opposite sides of the heating line 23 along the first direction X, with the second area 132 closer to the stop member 211 than the first area 131. The dimension of the first area 131 along the first direction X is smaller than the dimension of the second area 132 along the first direction X. For example, the dimension of the first area 131 along the first direction X is 1 mm, and the dimension of the second area 132 along the first direction X is 1.2 mm. Thus, the contact area 13 has a larger dimension along the first direction X on the side closer to the stop member 211, which better prevents interference between the roller 10 and the stop member 211.

[0049] Continue reading Figures 2-4In some embodiments, the printing channel has a channel inlet 11 and a channel outlet 12 opposite to each other along a first direction X. A blocking member 211 and a heating line 23 are spaced apart along the first direction X, and the distance between the blocking member 211 and the heating line 23 along the first direction X is 1mm-2.5mm, for example, 1.5mm, 2mm, or 2.2mm. It is understood that when the distance between the blocking member 211 and the heating line 23 along the first direction X is small, the blocking member 211 is prone to interfering with the rubber roller 10, making it impossible for the rubber roller 10 to press against the heating line; when the distance between the blocking member 211 and the heating line 23 along the first direction X is large, the blocking member 211 is difficult to function during paper return, causing the printing paper on the label roll to be easily peeled off, resulting in a paper jam. Based on this, in this embodiment, the distance between the blocking member 211 and the heating line 23 along the first direction X is set to 1mm-2.5mm, so that the blocking member 211 can play a full role in the paper feeding and paper return process, preventing the printing paper from being peeled off by the edge of the print head 20. At the same time, the rubber roller 10 and the blocking member 211 are less likely to interfere with each other, thereby ensuring the printing effect.

[0050] In some embodiments, the blocking element 211 is closer to the channel outlet 12 than the heating wire 23. It is understood that during the printing process, the total length of the paper output is often greater than the total length of the paper return, making it more likely that the printed paper will be peeled off by the edge of the print head 20 closer to the channel outlet 12. By placing the blocking element 211 closer to the channel outlet 12, it is possible to more effectively prevent the printed paper from being peeled off.

[0051] In some embodiments, the printing channel has a channel inlet 11 and a channel outlet 12 opposite each other along a first direction X. The print head 20 is disposed opposite the rubber roller 10 along a second direction Y, which intersects the first direction X, for example, perpendicularly or at an acute angle. The blocking member 211 protrudes toward the rubber roller 10 along the second direction Y relative to the first surface 221 by a dimension greater than 0 and less than or equal to 0.1 mm, for example, 0.03 mm, 0.05 mm, or 0.08 mm. In this way, while ensuring that the blocking member 211 functions effectively to prevent the printing paper from being peeled off, interference between the blocking member 211 and the rubber roller 10 is avoided.

[0052] Continue reading Figures 2-4 In some embodiments, the printer 1 further includes a base 30 and a mounting bracket 40, the mounting bracket 40 having a first end 40a and a second end 40b opposite to each other, the first end 40a being connected to the base 30. A rubber roller 10 is connected to the second end 40b. The first end 40a is rotatably connected to the base 30 so that the rubber roller 10 can approach or move away from the printhead 20, thereby engaging with the printhead 20 to press or release filament.

[0053] In some embodiments, one of the mounting bracket 40 and the rubber roller 10 is provided with a mounting groove 41, and the other is provided with a rotating shaft 411. The rotating shaft 411 is rotatably engaged with the mounting groove 41, and the gap between the rotating shaft 411 and the groove wall of the mounting groove 41 is 0.01mm-0.1mm, for example, a gap of 0.03mm, 0.05mm, or 0.08mm. In this way, sufficient gap is provided to allow the rubber roller 10 to rotate smoothly, while avoiding an excessively large gap that would prevent the rubber roller 10 from shaking, thereby reducing the risk of interference between the rubber roller 10 and the blocking member 211 due to the shaking of the rubber roller 10.

[0054] In some embodiments, the mounting bracket 40 is provided with a mounting groove 41, and the rubber roller 10 is provided with a rotating shaft 411. The mounting bracket 40 is also provided with a guide inlet 412, which is opened towards the print head 20 and communicates with the mounting groove 41. The guide inlet 412 gradually widens from one end near the mounting groove 41 to the other end away from the mounting groove 41. In this way, during the installation of the rubber roller 10, the guide inlet 412 can guide the rubber roller 10 into the mounting groove 41, making the installation of the rubber roller 10 more convenient and faster. At the same time, during the operation of the rubber roller 10, the rubber roller 10 is less likely to detach from the mounting groove 41.

[0055] In some embodiments, one of the mounting bracket 40 and the base 30 is provided with a mounting hole 42, and the other is provided with a mounting shaft 421. The mounting shaft 421 is rotatably engaged with the mounting hole 42, and the gap between the mounting shaft 421 and the wall of the mounting hole 42 is 0.01mm-0.1mm, for example, a gap of 0.03mm, 0.05mm, or 0.08mm. In this way, sufficient clearance is provided to allow the mounting shaft 421 to rotate smoothly, while avoiding excessive clearance that would prevent the mounting shaft 421 from shaking, thereby reducing the risk of interference between the rubber roller 10 and the blocking member 211 due to the shaking of the mounting shaft 421.

[0056] In some embodiments, one of the mounting bracket 40 and the rubber roller 10 is provided with a mounting groove 41, and the other is provided with a rotating shaft 411, which is rotatably engaged with the mounting groove 41. One of the mounting bracket 40 and the base 30 is provided with a mounting hole 42, and the other is provided with a mounting shaft 421, which is rotatably engaged with the mounting hole 42. The axial direction of the rotating shaft 411 is parallel to the axial direction of the mounting shaft 421. Thus, along the axial direction of the rubber roller 10, the force exerted by the mounting bracket 40 on the rubber roller 10 is more uniform, thereby making the force exerted by the rubber roller 10 on the heating wire 23 more uniform, and thus making the printing more uniform.

[0057] Continue reading Figures 2-4In some embodiments, the printer 1 further includes a pressing member 50, one end of which is connected to the second end 40b, and the other end is connected to the base 30. In the pressing state, the pressing member 50 applies a pressing force towards the print head 20 to the second end 40b. Thus, under the action of the pressing member 50, the roller 10 can apply force to the heating wire 23 more stably, thereby ensuring printing stability.

[0058] In some embodiments, the pressing member 50 includes an elastic member, such as a compression spring. One end of the elastic member is connected to the second end 40b, and the other end is connected to the base 30. In the pressing state, the elastic member is compressed and applies a restoring force toward the print head 20 to the second end 40b. Thus, under the action of the elastic member, the roller 10 can apply force to the heating wire 23 more stably, thereby ensuring printing stability. Furthermore, the elastic member also acts as a buffer when the roller 10 applies force to the heating wire 23.

[0059] Combined Figure 5 In some embodiments, multiple pressing members 50 are arranged along the axial direction of the rubber roller 10. For example, two, three, or four pressing members 50 are arranged along the axial direction of the rubber roller 10. Optionally, when the number of pressing members 50 arranged along the axial direction of the rubber roller 10 is greater than two, the spacing between any two adjacent pressing members 50 along the axial direction of the rubber roller 10 is equal. Optionally, the multiple pressing members 50 are made of the same material and model. In this way, the multiple pressing members 50 can provide a more uniform force along the axial direction of the rubber roller 10, further improving the uniformity of printing.

[0060] 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.

[0061] 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: Rubber rollers; A printhead is arranged opposite to the rubber roller to form a printing channel through which consumables can pass. The printhead includes a mounting base, a heating head disposed on the mounting base, and a heating wire disposed on the heating head. The mounting base is provided with a blocking member. The side of the heating head away from the mounting base has a first surface facing the rubber roller. The blocking member is arranged to protrude towards the rubber roller relative to the first surface. The heating wire is disposed on the first surface. The rubber roller has a pressing state, in which the rubber roller cooperates with the print head to press against the consumable material located in the printing channel, and the consumable material located in the printing channel at least partially covers the heating wire and at least partially covers the blocking member; In the pressure state, and when the consumable does not enter the printing channel, the rubber roller and the print head form a contact area through surface contact, the heating wire is located within the contact area, and the rubber roller and the blocking member do not contact each other.

2. The printer according to claim 1, characterized in that, The printing channel has a channel inlet and a channel outlet that are opposite each other along a first direction; The contact area has a dimension of 1mm-3mm along the first direction.

3. The printer according to claim 1, characterized in that, The printing channel has a channel inlet and a channel outlet that are opposite each other along a first direction; The contact area includes a first area and a second area located on opposite sides of the heating wire along the first direction, the first area having a dimension of 0.5mm-1.5mm along the first direction, and the second area having a dimension of 0.5mm-1.5mm along the first direction.

4. The printer according to claim 1, characterized in that, The printing channel has a channel inlet and a channel outlet that are opposite each other along a first direction; The contact area includes a first area and a second area located on opposite sides of the heating wire along the first direction, wherein the second area is closer to the blocking member than the first area; The dimension of the first region along the first direction is smaller than the dimension of the second region along the first direction.

5. The printer according to claim 1, characterized in that, The printing channel has a channel inlet and a channel outlet that are opposite each other along a first direction; The blocking member and the heating wire are spaced apart along the first direction, and the distance between the blocking member and the heating wire along the first direction is 1mm-2.5mm.

6. The printer according to claim 5, characterized in that, The blocking element is closer to the channel outlet than the heating wire.

7. The printer according to claim 1, characterized in that, The printing channel has a channel inlet and a channel outlet that are opposite each other along a first direction; The print head and the glue roller are arranged opposite each other along a second direction, which intersects with the first direction; The dimension of the blocking member protruding from the first surface toward the rubber roller along the second direction is greater than 0 and less than or equal to 0.1 mm.

8. The printer according to claim 1, characterized in that, The printer also includes a base and a mounting bracket, the mounting bracket having a first end and a second end opposite to each other, the first end being connected to the base; The rubber roller is connected to the second end; The first end is rotatably connected to the base so that the rubber roller can move closer to or further away from the print head.

9. The printer according to claim 8, characterized in that, One of the mounting frame and the rubber roller is provided with a mounting groove, and the other is provided with a rotating shaft; The rotating shaft is rotatably engaged with the mounting groove, and the gap between the rotating shaft and the groove wall of the mounting groove is 0.01mm-0.1mm.

10. The printer according to claim 9, characterized in that, The mounting bracket is provided with the mounting groove, and the rubber roller is provided with the rotating shaft; The mounting bracket is also provided with a guide inlet, which is positioned facing the printhead opening and communicating with the mounting slot; The guide inlet gradually expands from one end of the guide inlet near the mounting slot to the other end of the guide inlet away from the mounting slot.

11. The printer according to claim 8, characterized in that, One of the mounting bracket and the base is provided with a mounting hole, and the other is provided with a mounting shaft; The mounting shaft is rotatably engaged with the mounting hole, and the gap between the mounting shaft and the wall of the mounting hole is 0.01mm-0.1mm.

12. The printer according to claim 8, characterized in that, One of the mounting frame and the rubber roller is provided with a mounting groove, and the other is provided with a rotating shaft, wherein the rotating shaft is rotatably engaged with the mounting groove; One of the mounting bracket and the base is provided with a mounting hole, and the other is provided with a mounting shaft, wherein the mounting shaft is rotatably engaged with the mounting hole; The axial direction of the rotating shaft is parallel to the axial direction of the mounting shaft.

13. The printer according to claim 8, characterized in that, The printer also includes a pressing member, one end of which is connected to the second end and the other end of which is connected to the base; In the pressed state, the pressing member applies a pressing force toward the print head to the second end.

14. The printer according to claim 13, characterized in that, The pressing member includes an elastic member, one end of which is connected to the second end, and the other end is connected to the base; In the compressed state, the elastic element is compressed and a restoring force is applied to the second end toward the print head.

15. The printer according to claim 13, characterized in that, Multiple pressing members are arranged along the axial direction of the rubber roller.

Images