A laser printer developing roller capable of avoiding excessive adsorption of toner

Abstract

This utility model discloses a laser printer developing roller that avoids excessive toner adsorption. It includes a roller body with a mounting post fixedly inserted through its inner cavity. A mounting plate is movably connected to the right end of the mounting post, and a circular hole is opened at the left end of the mounting post. A movable insert is movably inserted into the inner cavity of the circular hole, and a spring is fixedly connected to the right end of the movable insert. A through hole is opened on the movable insert, and an eccentric wheel is movably inserted into the inner cavity of the through hole. A rotating shaft is fixedly inserted through the eccentric wheel. When cleaning the developing roller, the drum unit can be opened, and the circular plate can be rotated using an Allen wrench to move the movable insert to the right, away from the mounting hole. Then, the mounting post can be flipped upwards to remove the roller body from the drum unit. The toner layer on the roller body can then be gently wiped with a dry cloth, making cleaning of the developing roller convenient and ensuring installation accuracy.

Description

Technical Field

[0001] This utility model relates to the field of laser printer technology, and in particular to a laser printer developing roller that avoids excessive toner adsorption. Background Technology

[0002] The function of the developing roller in a laser printer is to electrify the toner through friction and deliver it to the developing area. The surface of the developing roller must be clean, free of dirt and scratches, and must not be exposed to moisture. The developing roller needs to be cleaned frequently. The current design of the developing roller is relatively traditional, and disassembling the developing roller in the toner cartridge is very troublesome. It is necessary to remove the developing roller from the toner cartridge as a whole. Disassembling and assembling the developing roller for cleaning often slows down the installation process, thus affecting the printing effect of the laser printer. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a laser printer developing roller that avoids excessive toner adsorption.

[0004] One of the objectives of this utility model is achieved through the following technical solution:

[0005] A laser printer developing roller designed to prevent excessive toner adsorption includes a roller body. A mounting post is fixedly inserted through the inner cavity of the roller body. A mounting plate is movably connected to the right end of the mounting post. A circular hole is formed at the left end of the mounting post. A movable insert is movably inserted into the inner cavity of the circular hole. A spring is fixedly connected to the right end of the movable insert. A through hole is formed on the movable insert. An eccentric wheel is movably inserted into the inner cavity of the through hole. A rotating shaft is fixedly inserted through the eccentric wheel. Both ends of the rotating shaft are rotatably connected to the inner wall of the circular hole. A circular groove is formed at the top of the mounting post. A circular plate is movably inserted into the inner cavity of the circular groove. The rotating shaft is fixedly connected to the circular plate.

[0006] Furthermore, the outer surface of the roller body is provided with a selenium layer, and gears are fixedly sleeved on both ends of the outer edge of the mounting column.

[0007] Furthermore, the circular hole matches the movable insert, and the spring is fixedly connected to the right side wall of the inner cavity of the circular hole.

[0008] Furthermore, a first connecting plate is fixedly connected to the right end of the mounting column, and a second connecting plate is provided on both the front and rear sides of the first connecting plate. A pin is rotatably connected to the inner cavity of the first connecting plate, and the two ends of the pin are fixedly passed through the adjacent second connecting plates. The second connecting plates are fixedly connected to the top of the mounting plate.

[0009] Furthermore, two screws are movably inserted into the mounting plate, and the two screws are arranged symmetrically about the central axis of the mounting plate.

[0010] Furthermore, the circular plate and the circular groove are matched with each other, and the top of the circular plate is provided with an internal hexagonal groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model relates to a laser printer developing roller that avoids excessive toner adsorption. During installation, the developing roller is first installed inside the printer by screws and mounting plate working together. Then, the circular plate is rotated with an Allen wrench, causing the movable insert to move to the right. Next, the mounting post is flipped down to align with the mounting hole on the printer. Then, the circular plate is rotated in the opposite direction with an Allen wrench, causing the movable insert to move to the right under the elastic action of a spring. The movable insert is inserted into the inner cavity of the mounting hole, thereby fixing the developing roller and completing the installation of the developing roller.

[0013] 2. This utility model provides a laser printer developing roller that avoids excessive toner adsorption. When the developing roller needs cleaning, the drum can be opened, and the circular plate can be rotated using an Allen wrench to move the movable insert block to the right and away from the mounting hole. Then, the mounting post can be flipped upwards to remove the roller body from the drum. The selenium layer on the roller body can then be gently wiped with a dry cloth, making it easy to clean the developing roller and ensuring its installation accuracy.

[0014] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a frontal perspective view of the present invention;

[0016] Figure 2 A partial sectional perspective view of the mounting column of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a front perspective view of the movable insert block of this utility model.

[0019] Figure 5 This is a frontal perspective view of the eccentric wheel, a component of this utility model.

[0020] The following are the labels in the diagram: 1. Roller body; 2. Selenium layer; 3. Mounting column; 4. Gear; 5. First connecting plate; 6. Second connecting plate; 7. Mounting plate; 8. Screw; 9. Round hole; 10. Movable insert; 11. Spring; 12. Through hole; 13. Eccentric wheel; 14. Shaft; 15. Circular groove; 16. Circular plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Please see Figure 1-5 This utility model provides a technical solution: a laser printer developing roller that avoids excessive toner adsorption, comprising a roller body 1, a selenium layer 2 on the outer surface of the roller body 1, gears 4 fixedly sleeved near both ends of the outer edge of the mounting post 3, the mounting post 3 fixedly penetrating the inner cavity of the roller body 1, a mounting plate 7 movably connected to the right end of the mounting post 3, a first connecting plate 5 fixedly connected to the right end of the mounting post 3, and second connecting plates 6 on both the front and rear sides of the first connecting plate 5, a pin rotatably connected to the inner cavity of the first connecting plate 5, the two ends of the pin fixedly penetrating the adjacent second connecting plates 6, the second connecting plates 6 fixedly connected to the top of the mounting plate 7, and two screws 8 movably inserted into the mounting plate 7, the two screws 8 being symmetrically arranged about the central axis of the mounting plate 7.

[0025] The left end of the mounting post 3 has a circular hole 9, and a movable insert 10 is movably inserted into the inner cavity of the circular hole 9. A spring 11 is fixedly connected to the right end of the movable insert 10. The circular hole 9 and the movable insert 10 are matched with each other. The spring 11 is fixedly connected to the right side wall of the inner cavity of the circular hole 9. The movable insert 10 has a through hole 12, and an eccentric wheel 13 is movably inserted into the inner cavity of the through hole 12. A rotating shaft 14 is fixedly inserted through the eccentric wheel 13. The two ends of the rotating shaft 14 are rotatably connected to the inner wall of the circular hole 9. The top of the mounting post 3 has a circular groove 15, and a circular plate 16 is movably inserted into the inner cavity of the circular groove 15. The rotating shaft 14 is fixedly connected to the circular plate 16, and the circular plate 16 is matched with the circular groove 15. The top of the circular plate 16 has an internal hexagonal groove.

[0026] Working Principle: This utility model relates to a laser printer developing roller that avoids excessive toner adsorption. During use, the mounting plate 7 is first installed inside the printer using screws 8 and mounting plate 7. Then, an Allen wrench is inserted into the inner cavity of the hexagonal groove on the top of the circular plate 16. Rotating the circular plate 16 via the rotating shaft 14 causes the eccentric wheel 13 to rotate. The protruding part of the eccentric wheel 13 rotates to face right, and the protruding part of the eccentric wheel 13 fits against the right wall of the inner cavity of the perforation 12. The eccentric wheel 13 drives the movable insert 10 to move to the right. When the movable insert 10 moves, it compresses the spring 11. The movable insert 10 moves within the cavity of the circular hole 9 until its left end is flush with the left end of the mounting post 3. Then, the mounting post 3 is flipped down and rotated around the pin to align with the mounting hole on the printer. Then, the circular plate 16 is rotated in the opposite direction using an Allen wrench. The circular plate 16 drives the eccentric wheel 13 to rotate via the rotating shaft 14. The protruding part of the eccentric wheel 13 rotates to face the left and moves away from the right wall of the cavity of the through hole 12. The movable insert 10 moves to the right under the elastic action of the spring 11 and inserts into the cavity of the mounting hole to fix the developing roller, thus completing the installation of the developing roller.

[0027] During installation, the developing roller is first installed inside the printer by screw 8 and mounting plate 7 working together. Then, the circular plate 16 is rotated with an Allen wrench, causing the movable insert 10 to move to the right. Next, the mounting post 3 is flipped down to align with the mounting hole on the printer. Then, the circular plate 16 is rotated in the opposite direction with an Allen wrench, causing the movable insert 10 to move to the right under the elastic action of spring 11. The movable insert 10 is inserted into the inner cavity of the mounting hole, thereby fixing the developing roller and completing the installation of the developing roller.

[0028] When the developing roller needs to be cleaned, the drum can be opened, and the circular plate 16 can be rotated by the Allen wrench to move the movable insert 10 to the right and away from the mounting hole. Then, the mounting post 3 can be flipped upward to remove the roller body 1 from the drum. The selenium layer 2 on the roller body 1 can then be gently wiped with a dry cloth, which makes it easy to clean the developing roller and ensures its installation accuracy.

[0029] 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.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0034] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A laser printer developing roller that avoids excessive toner adsorption, comprising a roller body (1), characterized in that: The roller body (1) has a fixed mounting column (3) through its inner cavity. The right end of the mounting column (3) is movably connected to a mounting plate (7). The left end of the mounting column (3) has a round hole (9). A movable plug (10) is movably inserted into the inner cavity of the round hole (9). A spring (11) is fixedly connected to the right end of the movable plug (10). A through hole (12) is opened on the movable plug (10). An eccentric wheel (13) is movably inserted into the inner cavity of the through hole (12). A rotating shaft (14) is fixedly inserted through the eccentric wheel (13). The two ends of the rotating shaft (14) are rotatably connected to the inner wall of the round hole (9). A round groove (15) is opened at the top of the mounting column (3). A round plate (16) is movably inserted into the inner cavity of the round groove (15). The rotating shaft (14) is fixedly connected to the round plate (16).

2. The laser printer developing roller for avoiding excessive toner adsorption as described in claim 1, characterized in that: The outer surface of the roller (1) is provided with a selenium layer (2), and gears (4) are fixedly sleeved on the outer edge of the mounting column (3) near both ends.

3. The laser printer developing roller for avoiding excessive toner adsorption as described in claim 1, characterized in that: The circular hole (9) matches the movable insert (10), and the spring (11) is fixedly connected to the right side wall of the inner cavity of the circular hole (9).

4. A laser printer developing roller for avoiding excessive toner adsorption as described in claim 1, characterized in that: The right end of the mounting column (3) is fixedly connected to a first connecting plate (5). The front and rear sides of the first connecting plate (5) are provided with second connecting plates (6). The inner cavity of the first connecting plate (5) is rotatably connected to a pin. The two ends of the pin are fixedly connected through the adjacent second connecting plates (6). The second connecting plates (6) are fixedly connected to the top of the mounting plate (7).

5. A laser printer developing roller for avoiding excessive toner adsorption as described in claim 1, characterized in that: Two screws (8) are movably inserted into the mounting plate (7), and the two screws (8) are arranged symmetrically about the central axis of the mounting plate (7).

6. A laser printer developing roller for avoiding excessive toner adsorption as described in claim 1, characterized in that: The circular plate (16) and the circular groove (15) are matched with each other, and the top of the circular plate (16) is provided with an internal hexagonal groove.

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