Printer

Abstract

The utility model relates to the technical field of printers, and provides a printer which comprises a machine body, a paper feeding disc and a pressing and holding piece, and the machine body is provided with a paper feeding hole; the paper feeding disc is arranged on the machine body and is obliquely arranged on one side of the paper feeding hole, and the paper feeding disc is used for bearing paper to be printed so as to control the paper to enter the paper feeding hole; the pressing and holding piece is arranged on the machine body or the paper feeding disc and used for limiting the inclination angle of the paper feeding disc towards one side of the paper feeding hole. When paper is thin, due to the pressing effect of the pressing piece on the paper feeding disc, the distance between the paper and the pickup roller set is increased during initial paper feeding, the friction force of the pickup roller set on the paper is reduced, the upwarp degree of the paper is reduced, and the paper jamming probability of the printer is reduced.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, and in particular to a printer. Background Technology

[0002] With the development of printing technology, the incidence of paper jams and paper feeding abnormalities has significantly decreased. During the printing process, the paper tray is raised to a constant height to feed the paper into the paper feed hole. However, for paper of different weights, the raising of the paper tray may affect the normal paper feeding, especially during batch printing. When the paper tray is raised to a constant height, the thinner paper is prone to curling upwards, causing the paper to be too close to the paper feed rollers. This results in excessive friction during paper feeding, leading to paper jams. Utility Model Content

[0003] This invention provides a printer to solve the problems of easy paper jams and high paper jam rate in existing printers.

[0004] This utility model provides a printer, including: a body, a paper tray and a holding member, wherein the body has a paper feed hole;

[0005] The paper feed tray is mounted on the machine body and is inclined on one side of the paper feed hole. The paper feed tray is used to support the paper to be printed, so as to control the paper to enter the paper feed hole.

[0006] The pressing member is disposed on the machine body or the paper feed tray, and the pressing member is used to limit the angle at which the paper feed tray tilts toward the paper feed hole.

[0007] According to the present invention, a printer has a paper feed tray rotatably disposed on the machine body, a pressing member disposed on the machine body, the pressing member being located on the side of the paper feed tray facing the paper feed hole and configured to abut against the paper feed tray.

[0008] According to the present invention, a printer further includes a first adhesive component, wherein the pressing component is adhesively attached to the machine body via the first adhesive component.

[0009] According to the present invention, a printer body is provided with a plurality of adjustment holes, which are arranged at intervals along the vertical direction, and the holding member can be selectively inserted into any of the adjustment holes.

[0010] According to the present invention, a printer has two clamping members, which are respectively disposed on opposite sides of the paper feed tray to simultaneously limit the tilt angle of the paper feed tray toward the paper feed hole.

[0011] According to the present invention, a printer further includes a paper guide pad, which is disposed on the machine body and located on the paper feed side of the paper feed hole. The paper guide pad is used to guide the paper into the paper feed hole.

[0012] According to the present invention, the paper guide pad is detachably disposed on the paper feed side of the paper feed hole;

[0013] And / or, the paper guide pads are multiple, and the multiple paper guide pads are arranged side by side along a direction perpendicular to the paper feeding direction.

[0014] According to the present invention, a printer body has a step formed between the paper feed hole and the paper feed tray. The step includes a top surface and a guide surface. The top surface is formed as the bottom wall of the paper feed hole. The guide surface extends toward one side of the paper feed tray and is used to guide the paper into the paper feed hole.

[0015] The paper guide pad includes a bent and connected body section and a transition section. The body section is attached to the top surface of the step, and the transition section is attached to the guide surface of the step, so that the paper smoothly transitions from the paper feed tray to the paper feed hole.

[0016] According to the present invention, the angle between the extension direction of the main body segment and the extension direction of the transition segment is 90°~160°.

[0017] According to the present invention, a printer further includes a second adhesive component, wherein the paper guide pad is bonded to the machine body via the second adhesive component.

[0018] This utility model provides a printer with a paper feed tray for supporting the paper to be printed. The paper feed tray is inclined on one side of the paper feed hole so that the paper to be printed is fed into the paper feed hole at an angle. A clamping member is provided on the machine body or the paper feed tray to limit the tilt angle of the paper feed tray toward the paper feed hole. When the paper is thin, due to the clamping effect of the clamping member on the paper feed tray, the distance between the paper and the paper feed roller assembly increases during the initial paper feeding, the friction of the paper feed roller assembly on the paper decreases, the degree of paper curling is reduced, and the probability of paper jams in the printer is reduced. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the overall structure of the printer provided by this utility model.

[0021] Figure 2 This is an exploded view of the printer structure provided by this utility model.

[0022] Figure label:

[0023] 1. Machine body; 11. Paper feed hole; 12. Step; 121. Top surface; 122. Guide surface; 2. Paper feed tray; 3. Holding component; 4. Paper guide pad; 41. Main body section; 42. Transition section; 5. Paper feed roller assembly. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] The terms "first" and "second" in the specification and claims of this utility model may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are 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 a limitation of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The following is combined Figures 1-2 The present invention will provide a detailed description of a printer provided by the present invention through specific embodiments and application scenarios.

[0029] like Figure 1 and Figure 2 As shown, this utility model provides a printer, including: a body 1, a paper feed tray 2, and a clamping member 3. The body 1 has a paper feed hole 11.

[0030] The paper feed tray 2 is located on the machine body 1 and is inclined on one side of the paper feed hole 11. The paper feed tray 2 is used to support the paper to be printed, so as to control the paper to enter the paper feed hole 11.

[0031] The clamping member 3 is provided on the machine body 1 or the paper feed tray 2. The clamping member 3 is used to limit the angle at which the paper feed tray 2 tilts toward the paper feed hole 11.

[0032] Understandably, such as Figure 1 As shown, the paper feed hole 11 is the entry point in the printer used to receive and guide paper. The paper tray 2 is located on the paper feed side of the paper feed hole 11 to hold the paper to be printed. The printer has a printing cavity. The printing cavity is the internal area of ​​the printer, where the print head and printing components such as laser and inkjet printers are located. When the printer starts working, one end of the paper tray 2 is raised, tilting the paper to be printed so that the paper enters the opening of the paper feed hole 11. Figure 1 As shown, a paper feed roller assembly 5 is rotatably mounted on the wall of the paper feed hole 11, which feeds the paper step by step into the printing path. The paper enters the printing chamber from the paper feed hole 11 through the paper transport path. The print head in the printing chamber sprays ink or heats a laser to form text or images as needed. After printing, the paper is sent out from the paper output hole.

[0033] In traditional printers, the paper tray 2 is tilted at a constant angle towards the paper feed hole 11, while the side of the paper tray 2 away from the paper feed hole 11 is raised to facilitate paper feeding. When the paper is thin, the distance between the paper and the paper feed roller assembly 5 of the paper feed hole 11 is too close, resulting in excessive friction between the paper feed roller assembly 5 and the paper, which easily leads to paper jams. This invention uses a holding member 3 to restrict the deformation of the side of the paper tray 2 facing the paper feed hole 11, preventing the paper tray 2 from rising on its own and avoiding excessive tilting of the paper. This increases the distance between the paper and the paper feed roller assembly 5 at the initial paper feeding stage, reduces the friction between the paper feed roller assembly 5 and the paper, and lowers the probability of paper jams.

[0034] Optional, such as Figure 1 As shown, the pressure member 3 protrudes from the machine body 1 and is located on the side of the paper tray 2 facing the paper feed hole 11, with at least a portion of the pressure member 3 positioned along the lifting path of the paper tray 2. The pressure member 3 can be a rubber block or a silicone block. The end of the pressure member 3 facing the paper tray 2 abuts against the paper tray 2, forming a stop to limit the deformation of the paper tray 2 towards the paper feed hole 11, reducing the tilting amplitude of the paper towards the paper feed hole 11. Initially, the distance between the paper and the paper feed roller assembly 5 increases, reducing the friction force between the paper feed roller assembly 5 and the paper, thus lowering the probability of paper jams. Alternatively, the pressure member 3 is located on one side of the paper tray 2, and the machine body 1 has a limiting edge corresponding to the pressure member 3. The pressure member 3 abuts against the limiting edge, thereby forming a stop to the paper tray 2, limiting the position of the paper tray 2, and achieving the purpose of reducing the tilting amplitude of the paper.

[0035] This utility model provides a printer in which the paper tray 2 is used to support the paper to be printed. The paper tray 2 is inclined on one side of the paper feed hole 11 so that the paper to be printed is fed into the paper feed hole 11 at an angle. The pressing member 3 is provided on the machine body 1 or the paper tray 2 to limit the tilt angle of the paper tray 2 toward the paper feed hole 11. When the paper is thin, due to the pressing effect of the pressing member 3 on the paper tray 2, the distance between the paper and the paper feed roller assembly 5 increases during the initial paper feeding, the friction of the paper feed roller assembly 5 on the paper decreases, the degree of paper curling is reduced, and the probability of paper jam in the printer is reduced.

[0036] The paper feed tray 2 is located on the machine body 1. The paper feed tray 2 is used to support the paper to be printed, so as to control the paper to enter the paper feed hole 11.

[0037] The clamping member 3 is provided on the machine body 1 or the paper feed tray 2. The clamping member 3 is used to limit the angle at which the paper feed tray 2 tilts toward the paper feed hole 11.

[0038] In one specific embodiment, such as Figure 1 As shown, the paper feed tray 2 is rotatably mounted on the machine body 1. The clamping member 3 is mounted on the machine body 1. The clamping member 3 is located on the side of the paper feed tray 2 facing the paper feed hole 11 and is configured to abut against the paper feed tray 2.

[0039] Specifically, the machine body 1 includes a housing, a rotating shaft, and a drive component. The drive component is installed inside the housing, and its drive end is connected to the rotating shaft to drive the rotating shaft to rotate. The end of the paper feed tray 2 near the paper feed hole 11 is fixedly sleeved on the rotating shaft. Under the drive of the rotating shaft, the end of the paper feed tray 2 away from the paper feed hole 11 is lifted upward, causing the paper to tilt towards the side of the paper feed hole 11 and smoothly enter the paper feed hole 11 from the paper feed tray 2.

[0040] The holding member 3 protrudes from the machine body 1 and is located on the lifting path of the paper feed tray 2. When the paper feed tray 2 is raised to a certain height, the end of the holding member 3 facing the paper feed tray 2 abuts against the paper feed tray 2, forming a stop on the paper feed tray 2 to limit the flipping angle of the paper feed tray 2 towards the paper feed hole 11, reduce the tilting amplitude of the paper, increase the distance between the paper and the paper feed roller assembly 5 at the initial paper feeding, reduce the friction of the paper feed roller assembly 5 on the paper, and reduce the probability of paper jams in the printer. Optionally, the driving component is a stepper motor or a servo motor.

[0041] In some embodiments, the printer further includes a first adhesive component. The holding member 3 is glued to the machine body 1 via the first adhesive component. The first adhesive component enables a detachable connection between the holding member 3 and the machine body 1, facilitating adjustment of the position of the holding member 3. This allows the user to adaptively adjust the tilt angle of the paper tray 2 towards the paper feed hole 11, enabling the printer to adapt to printing on different types of paper. Optionally, the first adhesive component is double-sided adhesive or structural adhesive.

[0042] In some embodiments, the pressure member 3 is movably disposed on the machine body 1 to adjust the arrangement position of the pressure member 3 relative to the paper feed tray 2.

[0043] This allows for the adaptive selection of the position of the clamping member 3 relative to the paper feed tray 2 based on variations in paper thickness and weight. For example, when the paper is thin, the clamping member 3 can be lowered to further reduce the lifting height of the paper feed tray 2, thus reducing the tilting of the paper and preventing it from warping upwards, thereby reducing the probability of paper jams. When the paper is thick, the clamping member 3 can be raised to ensure that the paper feed tray 2 is raised to a constant original height, ensuring smooth printing.

[0044] In one specific embodiment, the machine body 1 is provided with multiple adjustment holes. These adjustment holes are arranged at intervals along the vertical direction, and the pressure member 3 can be selectively inserted into any one of them. This allows for flexible adjustment of the position of the pressure member 3 relative to the paper feed tray 2 according to variations in paper thickness and weight, enabling the lifting height of the paper feed tray 2 to accommodate various types of paper and reducing the frequency of paper jams. Alternatively, the pressure member 3 can be adhered to the machine body 1 using double-sided adhesive or other bonding agents to flexibly adjust its position.

[0045] In some embodiments, there are two clamping members 3. The two clamping members 3 are disposed on opposite sides of the paper feed tray 2 to simultaneously limit the angle at which the paper feed tray 2 flips toward the side of the paper feed hole 11.

[0046] Specifically, the two clamping members 3 are installed on the machine body 1 and are symmetrically arranged on both sides of the paper feed tray 2 along the paper feeding direction, so that when the paper feed tray 2 is rotated to a certain angle on the side facing the paper feed hole 11, the two clamping members 3 simultaneously abut against both sides of the paper feed tray 2 to ensure the balance of the paper feed tray 2 and ensure that the paper is fed smoothly from the paper feed tray 2 into the paper feed hole 11.

[0047] The frictional force provided by the paper feed roller assembly 5 is constant. For low-basis-weight paper, this constant frictional force exceeds the force required for normal paper feeding, leading to frequent paper jams and simultaneous feeding of multiple sheets. In some embodiments, such as Figure 1 and Figure 2 As shown, the printer also includes a paper guide pad 4. The paper guide pad 4 is disposed on the body 1 and located on the paper feed side of the paper feed hole 11. The paper guide pad 4 is used to guide the paper into the paper feed hole 11.

[0048] Specifically, the paper guide pad 4 is located on the paper transport path from the paper feed tray 2 to the paper feed hole 11, that is, the paper guide pad 4 is located on the paper feed side of the paper feed hole 11. The surface of the paper guide pad 4 is flat and smooth with low roughness, so as to guide the paper more smoothly into the paper feed hole 11. At the same time, the paper guide pad 4 can reduce the coefficient of friction between the paper and the paper feed roller assembly 5 to a certain extent, thereby reducing the frequency of paper jams caused by excessive friction. Optionally, the paper guide pad 4 is an acrylic paper pad. Alternatively, the paper guide pad 4 is a silicone pad.

[0049] In some embodiments, the paper guide pad 4 is detachably disposed on the paper feed side of the paper feed hole 11, so that the printer can adapt to printing on various types of paper and improve the printer's versatility. Optionally, the printer also includes an adhesive component. The paper guide pad 4 is bonded to the machine body 1 by a second adhesive component, facilitating assembly and disassembly. The second adhesive component can be double-sided tape or structural adhesive. When the paper is thin, to avoid excessive friction between the paper feed roller assembly 5 and the paper, the paper guide pad 4 can be fixed to the paper feed side of the paper feed hole 11, thereby reducing friction and lowering the probability of paper jams. When the paper is thick, the paper guide pad 4 can be removed from the machine body 1 to allow normal printing.

[0050] In some embodiments, such as Figure 1 As shown, there are multiple paper guide pads 4. The multiple paper guide pads 4 are arranged side by side along the feeding direction perpendicular to the paper to ensure the uniformity of the frictional force on the paper in its width direction, prevent the paper from curling, and thus reduce the probability of paper jams.

[0051] The number of paper guide pads 4 can be two, with the two paper guide pads 4 respectively located on both sides of the paper feed roller assembly 5 to ensure the flatness of both ends in the width direction of the paper and to ensure normal printing. Alternatively, the number of paper guide pads 4 can be three, four, or six, etc., and this utility model does not make a specific limitation in this regard.

[0052] In some embodiments, such as Figure 1 As shown, the machine body 1 has a step 12 formed between the paper feed hole 11 and the paper feed tray 2. The step 12 includes a top surface 121 and a guide surface 122. The top surface 121 is formed as the bottom wall of the paper feed hole 11. The guide surface 122 extends towards the paper feed tray 2. The guide surface 122 is used to guide the paper into the paper feed hole 11.

[0053] The paper guide pad 4 includes a bent and connected body section 41 and a transition section 42. The body section 41 is attached to the top surface 121 of the step 12, and the transition section 42 is attached to the guide surface 122 of the step 12, so that the paper smoothly transitions from the paper tray 2 to the paper feed hole 11.

[0054] Specifically, such as Figure 1 As shown, the mounting position of the paper tray 2 near the paper feed hole 11 is lower than the bottom wall of the paper feed hole 11, forming a step 12 on the machine body 1. The top surface 121 is the bottom wall of the paper feed hole 11, and the guide surface 122 is the transition surface on the machine body 1 from the paper tray 2 to the bottom wall of the paper feed hole 11. There is a certain angle between the guide surface 122 and the top surface 121. Optionally, the guide surface 122 and the top surface 121 are set at an obtuse angle. Correspondingly, the body section 41 of the paper guide pad 4 is horizontally arranged and fixed to the bottom wall of the paper feed hole 11, while the transition section 42 is inclined and fixed to the guide surface 122. This allows the paper in the paper tray 2 to smoothly transition from the paper tray 2 to the paper feed hole 11, reducing the friction on the paper and ensuring smooth printing.

[0055] The angle between the extending direction of the main body segment 41 and the extending direction of the transition segment 42 is consistent with the angle between the top surface 121 and the guide surface 122 of the step 12. Optionally, the angle between the extending direction of the main body segment 41 and the extending direction of the transition segment 42 is 90° to 160°, so that the paper transitions smoothly from the paper tray 2 to the paper feed hole 11. The angle between the extending direction of the main body segment 41 and the extending direction of the transition segment 42 can be 90°, 100°, 120°, 130°, 140°, 150°, or 160°. Preferably, the angle between the extending direction of the main body segment 41 and the extending direction of the transition segment 42 is 150°.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A printer, characterized in that, include: The machine body comprises a paper feed tray and a pressure holding component, wherein the machine body has a paper feed hole; The paper feed tray is mounted on the machine body and is inclined on one side of the paper feed hole. The paper feed tray is used to support the paper to be printed, so as to control the paper to enter the paper feed hole. The pressing member is disposed on the machine body or the paper feed tray, and the pressing member is used to limit the angle at which the paper feed tray tilts toward the paper feed hole.

2. The printer according to claim 1, characterized in that, The paper feed tray is rotatably mounted on the machine body, and the pressing member is mounted on the machine body. The pressing member is located on the side of the paper feed tray facing the paper feed hole and is configured to abut against the paper feed tray.

3. The printer according to claim 2, characterized in that, It also includes a first adhesive component, through which the pressing component is adhesively attached to the body.

4. The printer according to claim 2, characterized in that, The body is provided with multiple adjustment holes, which are arranged at intervals along the vertical direction, and the holding member can be selectively inserted into any of the adjustment holes.

5. The printer according to any one of claims 1-4, characterized in that, The paper feed tray has two clamping members, which are respectively disposed on opposite sides of the paper feed tray to simultaneously limit the tilt angle of the paper feed tray toward the paper feed hole.

6. The printer according to claim 1, characterized in that, It also includes a paper guide pad, which is disposed on the machine body and located on the paper feed side of the paper feed hole. The paper guide pad is used to guide the paper into the paper feed hole.

7. The printer according to claim 6, characterized in that, The paper guide pad is detachably disposed on the paper feed side of the paper feed hole; And / or, the paper guide pads are multiple, and the multiple paper guide pads are arranged side by side along a direction perpendicular to the paper feeding direction.

8. The printer according to claim 6, characterized in that, The machine body has a step between the paper feed hole and the paper feed tray. The step includes a top surface and a guide surface. The top surface is formed as the bottom wall of the paper feed hole. The guide surface extends toward one side of the paper feed tray and is used to guide the paper into the paper feed hole. The paper guide pad includes a bent and connected body section and a transition section. The body section is attached to the top surface of the step, and the transition section is attached to the guide surface of the step, so that the paper smoothly transitions from the paper feed tray to the paper feed hole.

9. The printer according to claim 8, characterized in that, The angle between the extension direction of the main body segment and the extension direction of the transition segment is 90°~160°.

10. The printer according to any one of claims 6 to 9, characterized in that, It also includes a second adhesive component, through which the paper guide pad is bonded to the body.

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