A paper hopper and printer

Abstract

The utility model discloses a paper bin and printer, paper bin at least includes first paper separating structure and second paper separating structure that set up in proper order, first paper separating structure includes blocking part and down -pressing part, and down -pressing part is located paper top, and is suitable for covering the part of paper, and blocking part is suitable for along paper direction and blocks paper, realizes first paper separating. Second paper separating structure is equipped with paper separating face, and paper separating face is equipped with first contact surface and second contact surface, and the roughness of first contact surface is greater than the roughness of second contact surface, and first contact surface is prior to second contact surface and contacts the end of paper, or and second contact surface simultaneously and contacts the end of paper, realizes second paper separating, through multiple paper separating, guarantees paper separating effect good.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment, specifically to a paper tray and a printer. Background Technology

[0002] In office document printers, to ensure that only one sheet of paper is fed at a time, the printer has a paper separation mechanism. This mechanism is crucial for the printer. Current paper separation technology relies on the difference in friction coefficients between the paper feed rollers and the paper separation discs. However, this mechanism has a drawback: it must ensure that no more than two sheets of paper enter the separation mechanism simultaneously. If more than two sheets enter, such as three or more, the separation function will fail. Therefore, the front-end paper feeding stage is critical, preventing more than two sheets from entering the separation mechanism at the same time. Currently, however, there is a lack of a suitable mechanism for this. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems existing in the background art or to provide a material basis for overcoming the above-mentioned defects or problems existing in the background art, and to provide a paper hopper and a printer.

[0004] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Option 1: A paper dispenser, comprising a base and a first paper separating structure and a second paper separating structure arranged sequentially.

[0006] The first paper-separating structure includes a blocking part and a pressing part. The pressing part is located above the paper and is adapted to cover a portion of the paper. The blocking part is adapted to block the paper in the paper feeding direction so that the end of the paper bends when it abuts the blocking part to pass over the pressing part.

[0007] The second paper-splitting structure has a paper-splitting surface, which has a first contact surface and a second contact surface. The roughness of the first contact surface is greater than that of the second contact surface, and the first contact surface contacts the end of the paper before the second contact surface, or contacts the end of the paper simultaneously with the second contact surface.

[0008] Option 2, based on Option 1, the seat body includes a front sidewall, and the blocking part and the pressing part are disposed on the front sidewall; or, the front sidewall forms the blocking part, and the pressing part is disposed on the front sidewall.

[0009] Option 3, based on Option 1, the base includes a mounting base and a paper width adjusting component. The paper width adjusting component is slidably connected to the mounting base along a first direction. The paper width adjusting component is provided with a paper width adjusting surface, which is adapted to abut against the paper in the width direction of the paper. The blocking part is connected to one end of the pressing part, and the other end of the pressing part is connected to the paper width adjusting component or the mounting base.

[0010] Option 4, based on Option 1, is that the pressing part is rotatably connected to the seat about an axis parallel to the first direction, and the pressing part is adapted to swing downward under its own weight or under the force of the biasing component.

[0011] Option 5, based on Option 1, provides a limiting surface for the pressing part, which is adapted to stop swinging downward when the limiting surface abuts against the seat.

[0012] Option 6, based on Option 1, wherein the pressing part is elastic to be adapted to deform when the end of the paper is bent and to recover when the paper passes over it.

[0013] Option 7, based on Option 1, has a cut-edge structure for the portion of the pressing part used to press the paper.

[0014] Option 8, a printer, includes a body and a paper tray as described in any one of Options 1 to 7, the paper tray being mounted on the body, the paper tray including a paper compartment.

[0015] Option 9, based on Option 8, further includes a paper feed roller, which is adapted to be rotatably connected to the machine body about an axis parallel to the first direction, and the coefficient of friction of the paper feed roller is greater than the coefficient of friction of the paper separating surface.

[0016] Option 10, based on Option 9, has the first contact surfaces respectively located at both ends of the second contact surface along the first direction. The paper feed roller includes a paper feed section and two abutment rollers. The two abutment rollers are respectively adapted to contact the two first contact surfaces. The paper feed section is a non-circular roller and partially protrudes radially upward from the abutment rollers to clamp the paper together with the second contact surface. The abrasion resistance of the first contact surface is greater than that of the second contact surface.

[0017] As can be seen from the above description of the present invention and its preferred embodiments, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0018] A paper storage container includes at least a first paper separating structure and a second paper separating structure arranged sequentially.

[0019] The first paper-separating structure includes a blocking section and a pressing section. The pressing section is located above the paper and is adapted to cover a portion of the paper. The blocking section is adapted to block the paper along the paper feeding direction. When the paper feed roller feeds the paper, the force on the topmost paper is the greatest. The end of the paper bends when it comes into contact with the blocking section. Relying on the elasticity of the paper itself, the paper feed roller can carry the topmost paper over the pressing section, only partially pressed down by the pressing section. The driving force of the second paper is the frictional force between the first and second papers, which is relatively small. At the same time, because the first paper is blocking it from above, it is not so easy for it to flip over the pressing section and will remain below the pressing section. Based on this principle, the first paper separation is achieved.

[0020] The second paper-splitting structure has a paper-splitting surface with a first contact surface and a second contact surface. The roughness of the first contact surface is greater than that of the second contact surface, and the first contact surface contacts the end of the paper before or simultaneously with the second contact surface. In this case, similarly, the force exerted by the feed roller on the topmost sheet is the greatest, overcoming the friction generated by the contact between the first sheet and the first and second contact surfaces, thus allowing the paper to feed. The driving force on the second sheet is the friction between the first and second sheets, which is relatively small and blocked by the first contact surface, preventing it from continuing forward. This achieves a second layer of paper splitting. Through multiple layers of paper splitting, a good splitting effect is ensured. Specifically, the first contact surface contacts the end of the paper before the second contact surface. Compared to another solution, with the same area, the contact area between the first contact surface and the end of the paper can be set larger, resulting in a better splitting effect, ensuring that the sheets are generally within two sheets when split by the subsequent feed roller. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a partial three-dimensional view of the printer structure in Example 1;

[0023] Figure 2 for Figure 1 Enlarged view of the marked area;

[0024] Figure 3 A schematic diagram of the structure of a printer is provided for implementation.

[0025] Figure 4 for Figure 3 Enlarged view of the marked area;

[0026] Figure 5This is an assembly diagram of the paper separating component and the paper width adjusting component in Example 1;

[0027] Figure 6 This is a perspective view of the paper-separating component in Example 1;

[0028] Figure 7 This is a schematic diagram showing the interaction between the paper feeding roller and the paper separating disc in Example 1;

[0029] Figure 8 This is a schematic diagram of the first type of paper-splitting in Example 1;

[0030] Figure 9 This is a second schematic diagram of the paper-splitting method in Example 1;

[0031] Figure 10 This is another schematic diagram of the first paper compartment in Example 1;

[0032] Explanation of key figure labels:

[0033] Paper tray 10; base 1; mounting base 11; paper width adjusting component 12; paper width adjusting surface 121; paper separating component 2; rotating plate 21; limiting plate 22; limiting surface 221; connecting plate 23; first paper separating structure 24; blocking part 241; pressing part 242; paper separating piece 3; second paper separating structure 31; first contact surface 311; second contact surface 312; lifting plate 4; paper feeding roller 20; paper feeding part 201; abutting wheel 202; first direction 30; Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0036] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of the invention.

[0037] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0038] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0039] refer to Figures 1-10 A printer includes a body, a paper tray 10, and a paper feed roller 20.

[0040] The machine body has the main printing components, such as the print head.

[0041] Paper tray 10 is the main paper storage element. Paper tray 10 is slidably connected to the machine body to facilitate paper loading. Paper tray 10 includes a base 1, a paper separating component 2, a paper separating sheet 3, and a lifting plate 4.

[0042] refer to Figure 1 The base 1 includes a mounting base 11 and a paper width adjusting member 12. The paper width adjusting member 12 is slidably connected to the mounting base 11 along the first direction 30. The paper width adjusting member 12 is provided with a paper width adjusting surface 121, which is adapted to abut against the paper in the width direction of the paper. There can be two paper width adjusting members 12, which are adapted to be close to or far from each other.

[0043] refer to Figure 3 The lifting plate 4 is adapted to provide a place for the paper to rest and to lift the paper under the action of a spring so that the topmost layer of paper abuts against the feed roller 20. The lifting plate 4 is normally rotatably connected to the mounting base 11 of the base 1 about an axis parallel to the first direction 30.

[0044] In this embodiment, reference is made to Figure 5 , Figure 6The paper separating component 2 is mounted on the paper width adjusting component 12 of the base 1 and is located on the front side, i.e., the side near the paper feed roller 20 (or the side in which the paper tray 10 is inserted into the machine body). In this embodiment, the paper separating component 2 includes a rotating plate 21, a limiting plate 22, a connecting plate 23, and a first paper separating structure 24 that are integrally connected to each other. The rotating plate 21 is rotatably connected to the base 1 about an axis parallel to the first direction 30 to facilitate up-and-down swinging. Specifically, the rotating plate 21 is rotatably connected to the paper width adjusting component 12 about an axis parallel to the first direction 30. The limiting plate 22 is perpendicularly connected to the rotating plate 21 and is located on the rotating plate 21 in the first direction 30 and close to the paper. The limiting plate 22 has a limiting surface 221. The paper separating component 2 is adapted to swing downward under its own weight or the force of the biasing component, and stops when the limiting surface 221 abuts against the front side of the paper width adjusting component 12 of the base 1. The biasing component can be a spring, a magnetic component, rubber, or other parts suitable for applying a force to the paper separating component 2 to bring it closer to the top surface of the paper. The connecting plate 23 is connected to the upper end of the limiting plate 22 and extends forward. The first paper-separating structure 24 includes a blocking part 241 and a pressing part 242. The pressing part 242 is located above the uppermost paper and is adapted to cover part of the paper to press it down. The pressing part 242 is also adapted to allow the paper to be flipped over. Preferably, the part of the pressing part 242 used to press the paper is a triangular plate, that is, the pressing part 242 is a triangle on the projection plane perpendicular to the vertical direction. The triangular plate is a right-angled plate, and the two right-angled sides are parallel to the first direction 30 and perpendicular to the first direction 30, respectively. Of course, in addition to the triangular plate, the part of the pressing part 242 used to press the paper can also be other cut-edge structures (with a smaller pressing area than a square), such as a fan shape, a semi-circle, a trapezoid, etc. In the same position, the pressing surface is smaller than that of a square structure, making it easier for the paper to bend and pass over. One end of the pressing part 242 is connected to the connecting plate 23 and is located on the connecting plate 23 in the first direction 30 and close to the paper. The pressing part 242 is connected to the paper width adjusting member 12 in sequence through the connecting plate 23, the limiting plate 22, and the rotating plate 21, so as to be rotatably connected to the paper width adjusting member 12 about an axis parallel to the first direction 30. (Reference) Figure 2 The blocking portion 241 is connected to the other end of the pressing portion 242 and extends downward. The blocking portion 241 is adapted to block the paper in the paper feeding direction so that the end of the paper bends when it abuts the blocking portion 241 to pass over the pressing portion 242. In other embodiments, the connecting plate 23, the limiting plate 22, and the rotating plate 21 can be regarded as part of the pressing portion 242, which is provided with a limiting surface 221.

[0045] Of course, in other embodiments, the paper separating component 2 can be formed together with the base 1 to create a first paper separating structure 24, wherein, reference Figure 10The mounting base 11 of the seat body 1 has a front sidewall, which forms a blocking part 241. The paper separating component 2 has a pressing part 242, which is located on the front sidewall. This allows the paper separating component 2 to omit the structure of the blocking part 241. However, the positional relationship between the blocking part 241 and the pressing part 242 needs to be set reasonably to prevent the gap between them from being too large. This would cause the paper to bulge upward through the gap when it bends, preventing the paper from turning over the pressing part 242 and causing a paper jam. Of course, the blocking part 241 and the pressing part 242 can also be located on the front sidewall to achieve the paper separating effect.

[0046] Of course, in other embodiments, the paper separating component 2 may not be present, and the base 1 may be provided with a first paper separating structure 24.

[0047] Of course, in other embodiments, the paper separator 2 can be a spring and has elasticity to be adapted to deform upward when the end of the paper is bent and to return downward as the paper passes over to abut against the next sheet.

[0048] Of course, in other embodiments, such as Figure 10 The paper separating component 2 can also be installed on the mounting base 11 instead of the paper width adjusting component 12 to achieve the above-mentioned paper separating effect. In this case, the paper separating component 2 has a pressing part 242, and the base body 1 (generally located at the mounting base 11) has a blocking part 241. Alternatively, the paper separating component 2 may have both a pressing part 242 and a blocking part 241.

[0049] refer to Figure 7 The paper divider 3 is mounted on the mounting base 11 of the base body 1 and is provided with a second paper divider structure 31. Normally, the paper divider 3 and the mounting base 11 are rotatably connected around an axis parallel to the first direction 30. The paper divider 2 is subjected to the biasing force and moves toward the paper feed roller 20 to clamp the paper together with the paper feed roller 20, thereby feeding the paper.

[0050] The paper separating piece 3 is provided with a second paper separating structure 31. The first paper separating structure 24 and the second paper separating structure 31 are arranged sequentially, meaning that the paper first passes through the first paper separating structure 24 and then through the second paper separating structure 31. The second paper separating structure 31 is provided with a separating surface, which has a first contact surface 311 and a second contact surface 312. The roughness of the first contact surface 311 is greater than the roughness of the second contact surface 312, and the first contact surface 311 contacts the end of the paper before the second contact surface 312. For example, refer to... Figure 9The paper's end first contacts the lower side of the separating surface and then is conveyed upwards. A first contact surface 311 extending along the first direction 30 can be provided on the lower side, and a second contact surface 312 extending along the first direction 30 can be connected to the upper side of the first contact surface 311. The difference in roughness between the first contact surface 311 and the second contact surface 312 can be achieved by using the same material with different morphologies, or by using different materials. For example, cork rubber (relatively uneven, rough surface, with tiny protrusions that interfere with the paper's end, thus preventing the paper from moving forward) can be used on the first contact surface 311, while NBR rubber (relatively smooth) can be used on the second contact surface 312.

[0051] Or, refer to Figure 8 The roughness of the first contact surface 311 is greater than that of the second contact surface 312. The first contact surface 311 and the second contact surface 312 simultaneously contact the end of the paper. For example, the first contact surface 311 is respectively located at both ends of the second contact surface 312 along the first direction 30. The end of the paper first contacts the lower side of the paper separating surface and simultaneously abuts against the first contact surface 311 and the second contact surface 312 to achieve paper separation. This method is used in this embodiment.

[0052] In this embodiment, the wear resistance of the first contact surface 311 is greater than that of the second contact surface 312. The difference in wear resistance between the first contact surface 311 and the second contact surface 312 is mainly achieved through the different materials. The first contact surface 311 is made of cork rubber, which is more wear-resistant.

[0053] In this embodiment, a third paper-separating structure is also provided based on the relationship between the paper-feeding roller 20 and the paper-separating surface. Specifically,

[0054] refer to Figure 7 The paper feed roller 20 is adapted to be rotatably connected to the machine body around an axis parallel to the first direction 30, and the friction coefficient μ1 of the paper feed roller 20 (in contact with the first sheet of paper) is greater than the friction coefficient μ3 of the paper separating surface (in contact with the second sheet of paper). When the friction coefficient μ2 between the first sheet of paper and the second sheet of paper is usually less than μ3, paper separation can be achieved, that is, the third paper separating structure.

[0055] Of course, in addition to the above-mentioned paper-splitting structure, more paper-splitting structures can be set, and they can be located between the first paper-splitting structure 24 and the second paper-splitting structure 31.

[0056] refer to Figure 7The paper feed roller 20 includes a paper feed section 201 and two abutment rollers 202. The two abutment rollers 202 are respectively adapted to contact two first contact surfaces 311 (made of more wear-resistant material). The paper feed section 201 is a special-shaped roller (D-shaped) and partially protrudes radially upward from the abutment rollers 202 to clamp the paper together with the second contact surface 312. Preferably, the abutment rollers 202 are adapted to rotate relative to the paper feed section 201 about an axis parallel to the first direction 30, so that when the paper feed section 201 is not in contact with the paper, the paper is conveyed by the subsequent paper feed rollers, and the abutment rollers 202 can rotate due to the friction between the paper and the rollers, thereby reducing the conveying resistance.

[0057] When using, refer to Figure 4 The paper feed roller 20 rotates and begins to feed the paper. When the part of the paper feed section 201 protruding from the roller body contacts the paper, the paper begins to move. The paper moves forward against the blocking part 241. Under the action of the paper feed section 201, the paper begins to bend and, due to its own elasticity, moves away from below the pressing part 242 and passes over above it. The second sheet of paper may be blocked by the pressing part 242 or the first sheet of paper and remain below the pressing part 242, thus achieving the first separation of paper. When the paper enters the separating surface, it first contacts the first contact surface 311, which has a larger roughness. If multiple sheets of paper are being transported at this time, the sheets that are not in contact with the paper feed section 201 will have difficulty moving forward due to the first contact surface 311, thus achieving the second separation of paper. If two sheets of paper are held between the paper feed section 201 and the paper separating surface, a third layer of paper separating can be achieved because the friction coefficient μ1 of the paper feed roller 20 (in contact with the first sheet of paper) is greater than the friction coefficient μ3 of the paper separating surface (in contact with the second sheet of paper), and μ3 is greater than the friction coefficient μ2 between the first and second sheets of paper. This completes the paper separating process and facilitates subsequent printing.

[0058] Compared with the prior art, this embodiment has the following beneficial effects:

[0059] In one exemplary embodiment, a paper tray includes at least a first paper separating structure 24 and a second paper separating structure 31 arranged sequentially.

[0060] The first paper-separating structure 24 includes a blocking part 241 and a pressing part 242. The pressing part 242 is located above the paper and is adapted to cover a portion of the paper. The blocking part 241 is adapted to block the paper along the paper feeding direction. When the paper feed roller 20 feeds the paper, the force driving the topmost paper is the greatest. When the end of the paper abuts against the blocking part 241, it bends. Relying on the elasticity of the paper itself, the paper feed roller 20 can drive the topmost paper over the pressing part 242 only when a portion of it is pressed down by the pressing part 242. The driving force of the second paper is the frictional force between the first and second papers, which is relatively small. At the same time, because there is still the first paper blocking it from above, it is not so easy for it to flip over the pressing part 242 and will remain below the pressing part 242. Based on this principle, the first paper separation is achieved.

[0061] The second paper-splitting structure 31 has a paper-splitting surface, which has a first contact surface 311 and a second contact surface 312. The roughness of the first contact surface 311 is greater than that of the second contact surface 312. The first contact surface 311 contacts the end of the paper before the second contact surface 312, or contacts the end of the paper at the same time as the second contact surface 312. In this case, similarly, the force of the paper feed roller 20 driving the topmost paper is the greatest, which can overcome the friction generated by the contact between the first paper and the first contact surface 311 and the second contact surface 312, thus allowing the paper to feed. The driving force of the second paper is the friction between the first paper and the second paper, which is relatively small. It is blocked by the first contact surface 311 and thus cannot continue to move forward, realizing the second paper splitting. Through multiple paper splitting, the paper splitting effect is guaranteed to be good. In this design, the first contact surface 311 contacts the end of the paper before the second contact surface 312. Compared with the other solution, the contact area between the first contact surface 311 and the end of the paper can be set to be larger under the same area, resulting in a better paper separation effect, so that the paper is basically within 2 sheets when the paper is separated at the subsequent paper feed roller 20.

[0062] In one exemplary embodiment, the base 1 includes a front sidewall, with a blocking portion 241 and a pressing portion 242 disposed on the front sidewall; alternatively, the front sidewall forms the blocking portion 241, and the pressing portion 242 is disposed on the front sidewall to achieve the corresponding function. The latter utilizes the front sidewall to form the blocking portion 241, reducing the volume occupied by the first paper separating structure 24. In another exemplary embodiment, the base 1 includes a mounting base 11 and a paper width adjusting member 12. The paper width adjusting member 12 is slidably connected to the mounting base 11 along a first direction 30. The paper width adjusting member 12 has a paper width adjusting surface 121, which is adapted to abut against the paper in the width direction of the paper, thereby adapting to different types of paper. One end of the blocking portion 241 is connected to one end of the pressing portion 242, and the position between the blocking portion 241 and the pressing portion 242 is determined, resulting in more stable use. The other end of the pressing part 242 is connected to the paper width adjusting member 12 and can be adjusted with the paper adjusting member to prevent the pressing part 242 from not pressing on the paper when the paper width is small, thus failing to separate the paper. Alternatively, when adapting to the paper width, lengthening the pressing part 242 may result in an excessively large area pressing on the paper when dealing with the paper width, making it difficult to feed the paper. Furthermore, in this way, the pressing part 242 can be smaller in size, saving costs.

[0063] Of course, the other end of the pressing part 242 can also be connected to the mounting base 11 to achieve corresponding paper separation, so that the paper width adjustment part 12 does not need to be installed with the pressing part 242.

[0064] In one exemplary embodiment, the pressing part 242 is rotatably connected to the seat body 1 about an axis parallel to the first direction 30, so as to swing upward when the first sheet of paper is bent. When the first sheet of paper is separated from the pressing part 242 (not below the pressing part 242), the pressing part 242 is adapted to swing downward under its own weight or under the force of the biasing member, thereby pressing down the next sheet of paper and preventing it from flipping over with the first sheet of paper, thus improving the paper separation effect.

[0065] In one exemplary embodiment, the pressing part 242 is provided with a limiting surface 221, and stops when the limiting surface 221 abuts against the seat 1, so as to prevent the device from swinging to an unsuitable position when there is no obstruction, such as when there is no paper obstruction, and the position of the paper separating part 2 needs to be adjusted to be suitable for operation after the paper is replenished.

[0066] In one exemplary embodiment, the pressing portion 242 is elastic to be adapted to deform when the end of the paper is bent and to recover when the paper passes over, which can also press down the next sheet of paper and prevent it from flipping over with the first sheet, thereby improving the paper separation effect.

[0067] In one exemplary embodiment, the portion of the pressing part 242 used for pressing the paper has a cut-edge structure, which reduces the area of ​​the paper covered by the pressing part 242, so that only a small edge of the paper is pressed down, making it easier for the paper to bend and flip over the pressing part 242.

[0068] In one exemplary embodiment, a printer includes a body and a paper tray 10, the paper tray 10 being mounted on the body, supporting the paper tray, and having the beneficial effects provided by the paper tray.

[0069] In one exemplary embodiment, the paper-feeding roller 20 is adapted to be rotatably connected to the machine body around an axis parallel to the first direction 30 and cooperate with the paper-separating surface to achieve paper feeding. The friction coefficient of the paper-feeding roller 20 is greater than the friction coefficient of the paper-separating surface. When the friction coefficient of the paper-separating surface is greater than the friction coefficient between two adjacent sheets of paper, the paper-separating effect can be achieved, providing a material basis for achieving the third-level paper separation.

[0070] In one exemplary embodiment, the first contact surface 311 is respectively disposed at both ends of the second contact surface 312 along the first direction 30. The paper feed roller 20 includes a paper feed portion 201 and two abutment rollers 202. The two abutment rollers 202 are respectively adapted to contact the two first contact surfaces 311. The paper feed portion 201 is a non-circular roller and partially protrudes radially upward from the abutment rollers 202 to clamp the paper together with the second contact surface 312.

[0071] The first contact surface 311 has a greater wear resistance than the second contact surface 312, so it has a better wear resistance effect. This way, even when the paper feeding section 201 is not feeding paper, the first contact surface 311 is in contact with the abutment wheel 202 for a long time, and it is not easy to produce permanent yield deformation. No pits will be formed at the first contact surface 311, so as not to affect the paper feed size.

[0072] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A paper storage container, characterized in that: It includes a base (1) and a first paper-splitting structure (24) and a second paper-splitting structure (31) arranged sequentially. The first paper separating structure (24) includes a blocking part (241) and a pressing part (242). The pressing part (242) is located above the paper and is adapted to cover a portion of the paper. The blocking part (241) is adapted to block the paper in the paper feeding direction so that the end of the paper bends when it abuts the blocking part (241) to pass over the pressing part (242). The second paper-splitting structure (31) is provided with a paper-splitting surface, which is provided with a first contact surface (311) and a second contact surface (312). The roughness of the first contact surface (311) is greater than that of the second contact surface (312), and the first contact surface (311) contacts the end of the paper before the second contact surface (312), or contacts the end of the paper simultaneously with the second contact surface (312).

2. A paper silo as described in claim 1, characterized in that: The seat (1) includes a front sidewall, and the blocking part (241) and the pressing part (242) are disposed on the front sidewall; or, the blocking part (241) is formed by the front sidewall, and the pressing part (242) is disposed on the front sidewall.

3. A paper silo as described in claim 1, characterized in that: The base (1) includes a mounting base (11) and a paper width adjusting member (12). The paper width adjusting member (12) is slidably connected to the mounting base (11) along a first direction (30). The paper width adjusting member (12) is provided with a paper width adjusting surface (121). The paper width adjusting surface (121) is adapted to abut against the paper in the width direction of the paper. The blocking part (241) is connected to one end of the pressing part (242). The other end of the pressing part (242) is connected to the paper width adjusting member (12) or the mounting base (11).

4. A paper silo as described in claim 1, characterized in that: The pressing part (242) is rotatably connected to the seat (1) about an axis parallel to the first direction (30), and the pressing part (242) is adapted to swing downward under its own weight or under the force of the biasing member.

5. A paper silo as described in claim 1, characterized in that: The pressing part (242) is provided with a limiting surface (221), and the pressing part (242) is adapted to stop swinging downward when the limiting surface (221) abuts against the seat (1).

6. A paper silo as described in claim 1, characterized in that: The pressing part (242) is elastic to be adapted to deform when the end of the paper is bent and to recover when the paper passes over it.

7. A paper silo as described in claim 1, characterized in that: The portion of the pressing part (242) used for pressing the paper has a cut-edge structure.

8. A printer, characterized in that: It includes a body and a paper tray (10) as described in any one of claims 1-7, wherein the paper tray (10) is mounted on the body.

9. A printer as described in claim 8, characterized in that: It also includes a paper feed roller (20), which is adapted to be rotatably connected to the machine body about an axis parallel to the first direction (30), and the coefficient of friction of the paper feed roller (20) is greater than the coefficient of friction of the paper separating surface.

10. A printer as described in claim 9, characterized in that: The first contact surface (311) is respectively disposed at both ends of the second contact surface (312) along the first direction (30). The paper feed roller (20) includes a paper feed part (201) and two abutment rollers (202). The two abutment rollers (202) are respectively adapted to contact the two first contact surfaces (311). The paper feed part (201) is a special-shaped roller and partially protrudes radially upward from the abutment rollers (202) to clamp the paper together with the second contact surface (312). The wear resistance of the first contact surface (311) is greater than that of the second contact surface (312).

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