Printer

Abstract

The utility model discloses a printer which comprises a printer body and a paper rubbing roller. The machine body is provided with a flexible part and a paper feeding channel located on the rear side of the flexible part, and the flexible part is suitable for preventing paper from entering the paper feeding channel in a natural state; the paper twisting roller is suitable for rotating relative to the machine body and is provided with a paper twisting part and a receding part, the paper twisting part is suitable for twisting paper and also suitable for enabling the flexible part to deform so as to convey paper together with the flexible part, the flexible part can be driven by the paper twisting part to be bent in the paper feeding direction during paper twisting, the first piece of paper is in direct contact with the paper twisting part, and the friction force is large, so that the paper twisting effect is good. And the paper enters the paper feeding channel under the clamping of the paper rubbing part and the flexible part, so that stable paper feeding can be realized. The receding part is suitable for forming an interval with the flexible part so that the flexible part can recover to the natural state, after paper rubbing is completed, the receding part rebounds to the natural state, and follow-up paper adhering to the first piece of paper can be pushed back and prevented from entering the paper feeding channel. By means of the mode, the reliability of paper feeding can be improved, and paper can enter the paper feeding channel as much as two as possible.

Description

Technical Field

[0001] The utility model relates to the field of printing equipment, in particular to a printer. Background Art

[0002] In the prior art, in office document printers, the first thing to ensure is paper feeding. Only when paper feeding is successful can subsequent printing be performed. Therefore, the paper feeding structure of the printer is particularly important. If paper does not feed or multiple sheets of paper are fed, printing will be affected. Most of the existing technical solutions rely on a paper pickup roller to bring the paper to the paper separation structure for paper separation. The problem that is prone to occur is that it is easy to bring multiple sheets of paper to the paper separation structure, and then use the paper separation structure to ensure that one sheet of paper enters the printing channel. Often, the paper separation structure can only ensure paper separation when two sheets are fed at the same time. If three or even more sheets are fed, there is no way to feed the paper stably. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems in the background technology and provide a printer.

[0004] In order to achieve the above-mentioned purpose, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Solution 1: A printer, comprising:

[0006] A body, which is provided with a flexible portion and a paper feeding passage located at the rear side of the flexible portion, wherein the flexible portion is suitable for blocking paper from entering the paper feeding passage in a natural state;

[0007] The pickup roller is suitable for rotating relative to the machine body, and is provided with a pickup portion and a yielding portion. The pickup portion is suitable for picking up paper and is also suitable for deforming the flexible portion to convey paper together with the flexible portion. The yielding portion is suitable for forming a gap with the flexible portion to restore the flexible portion to a natural state.

[0008] Solution 2, based on Solution 1, the machine body includes a main body and a spring sheet, the main body is provided with the paper feeding channel, and the spring sheet is installed on the main body and has the flexible portion.

[0009] Solution 3, based on Solution 1, further includes a wheel body, a paper separation member and a first biasing member, the paper pickup roller includes a rotating shaft and a special-shaped roller fixed to the rotating shaft, the rotating shaft is suitable for being rotatably connected to the machine body, and the special-shaped roller is provided with the paper pickup portion and the yielding portion; the wheel body is coaxial with the rotating shaft and is rotatably connected to the rotating shaft; when the paper pickup portion and the paper separation member abut against each other, there is a gap between the wheel body and the paper separation member; when the wheel body and the paper separation member abut against each other, there is a gap between the yielding portion and the paper separation member;

[0010] The two ends of the first biasing member act on the paper separation member and the machine body respectively, so that the paper separation member moves in a direction toward the wheel body, so that the paper separation member is suitable for abutting against the special-shaped roller or the wheel body.

[0011] Solution 4: Based on Solution 3, the flexible portion is arranged to avoid the wheel body.

[0012] Solution 5, based on Solution 4, there is a gap between the flexible portion and the wheel body in the vertical direction, or the flexible portion is located between the two wheel bodies.

[0013] Option six, based on Option one, also includes a second biasing member and a paper lifting board. The machine body is provided with a paper storage bin, in which paper is stored. The paper lifting board is suitable for supporting paper. The two ends of the second biasing member act on the paper lifting board and the machine body respectively, so that the top layer of paper is suitable for being rubbed by the paper rubbing part.

[0014] Option seven, based on Option three, the paper separation component is provided with a first paper separation portion and a second paper separation portion, the first paper separation portion corresponds to the special-shaped roller, and the second paper separation portion corresponds to the wheel body; the friction coefficient of the first paper separation portion is greater than the friction coefficient of the second paper separation portion; and when the special-shaped roller abuts against the first paper separation portion, there is a gap between the wheel body and the second paper separation portion; when the wheel body abuts against the second paper separation portion, there is a gap between the special-shaped roller and the first paper separation portion.

[0015] Solution eight, based on solution seven, the hardness of the first paper separation portion is less than the hardness of the second paper separation portion.

[0016] Option nine, based on Option seven or Option eight, the wheel body is located on both sides of the special-shaped roller.

[0017] Option 10, based on Option 8, the second paper separation part also corresponds to the special-shaped roller, or the paper separation member is also provided with a third paper separation part, the third paper separation part corresponds to the special-shaped roller, and the hardness of the first paper separation part is less than the hardness of the third paper separation part.

[0018] From the above description of the utility model and its preferred embodiments, it can be seen that, compared with the prior art, the technical solution of the utility model and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0019] 1. In scheme 1 and its preferred embodiment, a printer includes a body and a paper pickup roller. The body is provided with a flexible part and a paper feed path located at the rear side of the flexible part, and the flexible part is suitable for blocking paper from entering the paper feed path in a natural state; the paper pickup roller is suitable for rotating relative to the body, and is provided with a paper pickup part and a yielding part, and the paper pickup part is suitable for picking up paper, and is also suitable for deforming the flexible part to convey paper together with the flexible part. When picking up paper, the flexible part will bend in the paper feeding direction driven by the paper pickup part. Because the first sheet of paper is in direct contact with the paper pickup part, the friction force is large, and it enters the paper feed path under the clamping of the paper pickup part and the flexible part, so that stable paper feeding can be achieved. The yielding part is suitable for forming a gap with the flexible part so that the flexible part can restore the natural state. After the paper picking is completed, it rebounds to the natural state, and can also push back the subsequent paper adhering to the first sheet of paper to prevent it from entering the paper feed path. In this way, the reliability of paper feeding can be increased, so that the number of sheets of paper that is less than or equal to two can enter the paper feed path as much as possible.

[0020] 2. In the second scheme and its preferred embodiment, the machine body includes a main body and a spring sheet. The main body is provided with a paper feeding channel. The spring sheet is installed on the main body and has a flexible part. The spring sheet is manufactured separately to ensure the strength of the main body and the flexibility of the flexible part.

[0021] 3. In the third scheme and its preferred embodiment, the paper pickup roller comprises a rotating shaft and a special-shaped roller fixedly connected to the rotating shaft, the rotating shaft is suitable for being rotatably connected to the machine body to drive the special-shaped roller to rotate, the special-shaped roller is suitable for switching between a working state and a non-working state when rotating, and the special-shaped roller is provided with a paper pickup part and a yielding part; in the working state, the paper pickup part abuts against the paper separation part, and a gap exists between the wheel body and the paper separation part; in the non-working state, the wheel body abuts against the paper separation part, the yielding part is opposite to the paper separation part, and a gap exists between the two; thereby realizing the state switching of the special-shaped roller;

[0022] The two ends of the first biasing member act on the paper separation member and the machine body respectively, so that the paper separation member moves toward the wheel body, so that the paper separation member is suitable for abutting against the special-shaped roller or the wheel body to maintain the paper separation function of the paper separation member.

[0023] The wheel body is coaxial with the rotating shaft and is rotationally connected to the rotating shaft. In the subsequent process of conveying paper, the wheel body rotates due to the force of the paper on the wheel body. Compared with the fixed connection method, the subsequent transmission friction is smaller.

[0024] 4. In scheme 4 and its preferred embodiment, the flexible portion is arranged to avoid the wheel body to ensure that the flexible portion can be deformed only when the special-shaped roller rotates.

[0025] 5. In scheme five and its preferred embodiment, there is a gap between the flexible portion and the wheel body in the vertical direction, or the flexible portion is located between the two wheel bodies, thereby achieving avoidance.

[0026] 6. Scheme 6 and its preferred embodiment further include a second biasing member and a lifting paper board, the machine body is provided with a paper storage bin, and the paper storage bin contains paper, and the two ends of the second biasing member act on the lifting paper board and the machine body respectively, so that the top layer of paper is suitable for being rubbed by the paper rubbing part, which is convenient for subsequent printing. The lifting paper board is suitable for supporting the paper and balancing the force of the second biasing member to prevent the paper from being dented due to local pressure.

[0027] 7. In the seventh scheme and its preferred embodiment, the paper separation member is provided with a first paper separation part and a second paper separation part, the first paper separation part corresponds to the special-shaped roller, and the second paper separation part corresponds to the wheel body; the friction coefficient of the first paper separation part is greater than the friction coefficient of the second paper separation part; and when the special-shaped roller abuts against the first paper separation part, there is a gap between the wheel body and the second paper separation part; when the wheel body abuts against the second paper separation part, there is a gap between the special-shaped roller and the first paper separation part. After the special-shaped roller finishes rubbing the paper, the subsequent paper will be transmitted between the wheel body and the second paper separation part, and the friction coefficient of the second paper separation part is smaller, so that the transmission resistance of the subsequent paper is smaller, the transmission load is smaller, and it is less likely to slip, and the paper can be fed normally.

[0028] 8. In Scheme 8 and its preferred embodiments, the applicant has discovered that when paper separation is not in progress, the wheel body and the paper separation piece are always in contact and under pressure. The paper separation piece is usually formed of hard but soft glue. Because the glue has the characteristic of permanent yield deformation, after a long time, the paper separation piece will form pits along the shape of the wheel body, which directly affects the size of the paper feed port, thereby affecting the paper feeding effect.

[0029] The hardness of the first paper separation part is less than that of the second paper separation part. The first paper separation part has a small hardness and a large friction force to ensure the paper rubbing effect of the profiled roller. Under the action of the first biasing member, the second paper separation part will be in contact with the second paper separation part for a long time when not in operation. Since the second paper separation part has a large hardness, it is not easy to produce permanent yield deformation, and the second paper separation part will not form a pit, thereby not affecting the size of the paper inlet.

[0030] 9. In Scheme 9 and its preferred embodiments, the wheel body is located on both sides of the special-shaped roller. When not working, the force of the first biasing member will be transmitted to the special-shaped roller and the rotating shaft through the wheel body. If the wheel body is only located at one end of the special-shaped roller, the force applied to the rotating shaft will be uneven. By locating the wheel body on both sides of the special-shaped roller, the force applied to the rotating shaft will be more uniform.

[0031] 10. In scheme 10 and its preferred embodiments, the second paper separation portion also corresponds to the special-shaped roller, and because the hardness of the first paper separation portion and the second paper separation portion are inconsistent, when contacting the special-shaped roller, a height difference will be generated due to the different deformation amounts, and the shape of the paper will also be concave accordingly, and the contact area between the paper and the paper separation member will become larger, so that the second paper will encounter greater resistance to prevent two sheets of paper from being conveyed at the same time.

[0032] Similarly, the paper separation member is further provided with a third paper separation portion, the third paper separation portion corresponds to the special-shaped roller, and the hardness of the first paper separation portion is less than that of the third paper separation portion, which can also achieve the effect of preventing the conveyance of two sheets of paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A top view of a portion of the structure of the printer in Example 1;

[0035] Figure 2 for Figure 1 Sectional view of the AA section plane;

[0036] Figure 3 for Figure 2 The enlarged view of the marked area shows that the flexible part is bent at this time;

[0037] Figure 4 This is a schematic diagram of the flexible portion in the first embodiment returning to a natural state;

[0038] Figure 5 A three-dimensional diagram of the paper separation member in the first embodiment;

[0039] Figure 6 A top view of the paper separation member in the first embodiment;

[0040] Figure 7 for Figure 6 Sectional view of the BB section;

[0041] Figure 8 Schematic diagram of paper height difference.

[0042] Description of main reference numerals:

[0043] Pickup roller 1; rotating shaft 11; shaped roller 12; first surface 121; second surface 122; wheel body 2; paper separation member 3; first paper separation portion 31; second paper separation portion 32; first biasing member 4; machine body 5; main body 51; paper storage bin 511; paper feeding channel 512; spring sheet 52; flexible portion 521; lifting paper board 6; second biasing member 7; DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0045] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0046] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the invention.

[0047] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0048] In the claims, specification and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0049] refer to Figure 1-Figure 7 A printer includes a paper pickup roller 1, a wheel body 2, a paper separation member 3, a first biasing member 4, a machine body 5, a paper lifting board 6, and a second biasing member 7.

[0050] refer to Figure 2-Figure 4The machine body 5 includes a main body 51 and a spring piece 52. The main body 51 is provided with a paper storage bin 511 and a paper feeding channel 512. Paper is stored in the paper storage bin 511. The spring piece 52 is installed on the main body 51 and has a flexible portion 521. The flexible portion 521 is located between the paper storage bin 511 and the paper separation mechanism, that is, between the paper storage bin 511 and the paper feeding channel 512. The paper feeding channel 512 is located at the rear side of the flexible portion 521. The flexible portion 521 is suitable for blocking paper from entering the paper feeding channel 512 in a natural state. In this embodiment, the spring piece 52 is an iron sheet, which is located at the bottom of the paper storage bin 511. In other embodiments, the flexible portion 521 can also be formed by other flexible parts, such as rubber. The spring piece 52 can also be fixed to the main body 51 by means of screws or the like.

[0051] refer to Figure 5-Figure 7 The pickup roller 1 is adapted to rotate relative to the machine body 5 and is used to transport the paper in the paper storage bin 511 to the paper feed passage 512 for printing. The pickup roller 1 comprises a rotating shaft 11 and a special-shaped roller 12 fixedly connected to the rotating shaft 11. The rotating shaft 11 is adapted to be rotatably connected to the machine body 5 so as to rotate the special-shaped roller 12. The special-shaped roller 12 is provided with a pickup portion and a yielding portion. The pickup portion is adapted to pick up paper and to deform the flexible portion 521 so as to transport the paper together with the flexible portion 521. The yielding portion is adapted to form a gap with the flexible portion 521 so as to restore the flexible portion 521 to a natural state. At this time, the height of the flexible portion 521 is greater than the height of the paper in the paper storage bin 511 so as to prevent the paper from entering the paper feed passage 512.

[0052] Specifically, the paper pickup portion and the yield portion include a first surface 121 and a second surface 122, respectively, and the first surface 121 and the second surface 122 are connected. The first surface 121 and the second surface 122 are generally D-shaped, the diameter of the first surface 121 is greater than the diameter of the second surface 122, the first surface 121 has the maximum diameter of the special-shaped roller 12, and the second surface 122 has the minimum diameter of the special-shaped roller 12. In this embodiment, the diameters of the first surface 121 are equal at all places, and the diameters of the second surface 122 are not equal, and the minimum diameter is located in the middle of the second surface 122.

[0053] There are two wheel bodies 2, which are sleeved on the rotating shaft 11 and located on both sides of the special-shaped roller 12, and the wheel body 2 is coaxial with the rotating shaft 11 and is rotatably connected with the rotating shaft 11; the diameter of the wheel body 2 is less than or equal to the maximum diameter of the special-shaped roller 12, and greater than the minimum diameter of the special-shaped roller 12, so that when not in working state (i.e. not picking up paper for printing), the wheel body 2 and the paper separation member 3 are against each other, so that there is a gap between the paper pickup roller 1 (the giving way part) and the paper separation member 3, and when in working state, the paper pickup part of the paper pickup roller 1 and the paper separation member 3 are against each other to perform the paper pickup action, at which time, there is a gap between the wheel body 2 and the paper separation member 3. The flexible part 521 is arranged to avoid the wheel body 2, and preferably, there is a gap between the flexible part 521 and the wheel body 2 in the vertical direction, or the flexible part 521 is located between the two wheel bodies 2.

[0054] The paper separation member 3 is used to cooperate with the special-shaped roller 12 or the wheel body 2 to convey paper. The paper separation member 3 is provided with a first paper separation portion 31 and a second paper separation portion 32. The first paper separation portion 31 corresponds to the special-shaped roller 12, and the second paper separation portion 32 corresponds to the wheel body 2, so that the first paper separation portion 31 is suitable for cooperation with the special-shaped roller 12, and the second paper separation portion 32 is suitable for cooperation with the wheel body 2, and when the special-shaped roller 12 abuts against the first paper separation portion 31, there is a gap between the wheel body 2 and the second paper separation portion 32; when the wheel body 2 abuts against the second paper separation portion 32, there is a gap between the special-shaped roller 12 and the first paper separation portion 31;

[0055] The hardness of the first paper separation portion 31 is less than that of the second paper separation portion 32, and the friction coefficient of the first paper separation portion 31 is greater than that of the second paper separation portion 32. In this embodiment, the second paper separation portion 32 also corresponds to the shaped roller 12, that is, the second paper separation portion 32 also extends to contact the shaped roller 12, so that the paper forms a height difference when the shaped roller 12 and the paper separation member 3 cooperate. Figure 8 shown.

[0056] The two ends of the first biasing member 4 act on the paper separating member 3 and the machine body 5 respectively, so that the paper separating member 3 moves in the direction toward the wheel body 2, so that the paper separating member 3 is suitable for abutting against the special-shaped roller 12 or the wheel body 2, specifically, the first paper separating portion 31 is suitable for abutting against the paper picking portion of the special-shaped roller 12, and the second paper separating portion 32 is suitable for abutting against the wheel body 2.

[0057] refer to Figure 3 The lifting paper board 6 is placed in the paper storage bin 511 and is suitable for supporting the paper. The two ends of the second biasing member 7 act on the lifting paper board 6 and the machine body 5 (the bottom of the paper storage bin 511) respectively, so that the uppermost paper on the lifting paper board 6 abuts against the wheel body 2 or the special-shaped roller 12. Specifically, when the printer is not working, the uppermost paper abuts against the wheel body 2, so that the uppermost paper is suitable for being rubbed by the paper rubbing unit. When working, the uppermost paper abuts against the special-shaped roller 12.

[0058] Working principle: When not in operation, the second surface 122 faces the first paper separation portion 31, and there is a gap between the first paper separation portion 31 and the flexible portion 521. Under the action of the first biasing member 4, the wheel body 2 abuts against the second paper separation portion 32; the top layer of paper abuts against the wheel body 2 under the action of the second biasing member 7, and the flexible portion 521 is in a natural state at this time to block the paper in the paper storage bin 511.

[0059] The rotating shaft 11 and the pickup roller 1 rotate, and the first surface 121 contacts the topmost paper to perform the paper picking action. The first surface 121 also contacts the flexible portion 521 to deform the flexible portion 521. Under the clamping of the flexible portion 521 and the pickup roller 1, the topmost paper gradually enters the paper feeding channel 512. Under the action of the first biasing member 4, the pickup roller 1 cooperates with the first paper separation portion 31 to feed the paper. After the paper picking is completed, the rotating shaft 11 stops rotating. At this time, there is a gap between the yielding portion and the paper separation portion 3. Under the action of the first biasing member 4, the wheel body 2 cooperates with the second paper separation portion 32. When the rear conveying roller transmits the paper, the wheel body 2 will rotate relative to the rotating shaft 11 due to the friction with the paper until the paper is separated from the wheel body 2 and restored to the non-working state, waiting for the next printing.

[0060] Embodiment 2

[0061] Different from the first embodiment, in this embodiment, the second paper separation portion 32 may not correspond to the special-shaped roller 12. The paper separation member 3 is further provided with a third paper separation portion, which corresponds to the special-shaped roller 12. The hardness of the first paper separation portion 31 is less than that of the third paper separation portion, which can also achieve the effect of preventing the conveyance of two sheets of paper. The third paper separation portion is connected to or spaced from the second paper separation portion 32, and the materials of the two can be the same or different.

[0062] The description of the above specification and embodiments is used to explain the protection scope of the utility model, but does not constitute a limitation on the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent replacements or other improvements to the embodiments of the utility model or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the utility model.

Claims

1. A printer, characterized in that: include A machine body (5) is provided with a flexible portion (521) and a paper feeding passage (512) located at the rear side of the flexible portion (521), wherein the flexible portion (521) is suitable for blocking paper from entering the paper feeding passage (512) in a natural state; The paper pickup roller (1) is suitable for rotating relative to the machine body (5), and is provided with a paper pickup portion and a clearance portion. The paper pickup portion is suitable for picking up paper and is also suitable for deforming the flexible portion (521) so as to convey paper together with the flexible portion (521). The clearance portion is suitable for forming a gap with the flexible portion (521) so as to restore the flexible portion (521) to a natural state.

2. A printer as claimed in claim 1, characterized in that: The machine body (5) comprises a main body (51) and a spring sheet (52); the main body (51) is provided with the paper feeding channel (512); the spring sheet (52) is mounted on the main body (51) and has the flexible portion (521).

3. A printer as claimed in claim 1, characterized in that: The machine also comprises a wheel body (2), a paper separation member (3) and a first biasing member (4); the paper pickup roller (1) comprises a rotating shaft (11) and a special-shaped roller (12) fixedly connected to the rotating shaft (11); the rotating shaft (11) is suitable for being rotatably connected to the machine body (5); the special-shaped roller (12) is provided with the paper pickup portion and the yielding portion; the wheel body (2) is coaxial with the rotating shaft (11) and is rotatably connected to the rotating shaft (11); when the paper pickup portion and the paper separation member (3) are in contact with each other, a gap exists between the wheel body (2) and the paper separation member (3); when the wheel body (2) and the paper separation member (3) are in contact with each other, a gap exists between the yielding portion and the paper separation member (3); The two ends of the first biasing member (4) act on the paper separation member (3) and the machine body (5) respectively, so that the paper separation member (3) moves in a direction toward the wheel body (2), so that the paper separation member (3) is suitable for abutting against the special-shaped roller (12) or the wheel body (2).

4. A printer as claimed in claim 3, characterized in that: The flexible portion (521) is arranged to avoid the wheel body (2).

5. A printer as claimed in claim 4, characterized in that: There is a gap between the flexible portion (521) and the wheel body (2) in the vertical direction, or the flexible portion (521) is located between two wheel bodies (2).

6. A printer as claimed in claim 1, characterized in that: It also includes a second biasing member (7) and a paper lifting board (6), the machine body (5) is provided with a paper storage bin (511), the paper storage bin (511) stores paper, the paper lifting board (6) is suitable for supporting paper, and the two ends of the second biasing member (7) act on the paper lifting board (6) and the machine body (5) respectively, so that the uppermost layer of paper is suitable for being rubbed by the paper rubbing part.

7. A printer as claimed in claim 3, characterized in that: The paper separation member (3) is provided with a first paper separation portion (31) and a second paper separation portion (32); the first paper separation portion (31) corresponds to the special-shaped roller (12), and the second paper separation portion (32) corresponds to the wheel body (2); the friction coefficient of the first paper separation portion (31) is greater than the friction coefficient of the second paper separation portion (32); and when the special-shaped roller (12) and the first paper separation portion (31) abut against each other, there is a gap between the wheel body (2) and the second paper separation portion (32); when the wheel body (2) and the second paper separation portion (32) abut against each other, there is a gap between the special-shaped roller (12) and the first paper separation portion (31).

8. A printer as claimed in claim 7, characterized in that: The hardness of the first paper separation portion (31) is smaller than the hardness of the second paper separation portion (32).

9. A printer according to claim 7 or 8, characterized in that: The wheel body (2) is located on both sides of the special-shaped roller (12).

10. A printer as claimed in claim 8, characterized in that: The second paper separation portion (32) also corresponds to the special-shaped roller (12), or the paper separation member (3) is also provided with a third paper separation portion, the third paper separation portion corresponds to the special-shaped roller (12), and the hardness of the first paper separation portion (31) is less than the hardness of the third paper separation portion.

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