Toner cartridge with toner cartridge scraper

Abstract

The utility model discloses a toner cartridge with a toner cartridge scraper, which relates to the technical field of toner cartridges and comprises a photosensitive roller and a cartridge frame, and a combined scraper is mounted in the cartridge frame. The combined scraper is composed of a metal base frame and a plurality of inclined cutter bodies, clamping grooves are formed in the metal base frame at equal intervals, and the head ends of the inclined cutter bodies are embedded into the clamping grooves. Bent scraper edges are arranged at the tail ends of the inclined cutter bodies, intersect with the circle center axis of the photosensitive roller and are in line contact and fit with the outer wall of the photosensitive roller, the distance between every two adjacent inclined cutter bodies is smaller than the transverse width of the inclined cutter bodies, and the contact parts of the bent scraper edges coincide; compared with the prior art, the utility model has obvious advantages; by adopting the combined scraper, when a certain inclined scraper body is abraded, only the part needs to be replaced, so that the maintenance cost and the resource waste are reduced; due to the special design and arrangement mode of the inclined cutter body, the inclined cutter body can be tightly attached to the photosensitive roller, residual carbon powder is effectively removed, cleaning dead angles are reduced, the printing quality is improved, flaws such as black spots and black channels are avoided, and stable and efficient operation of a selenium drum is guaranteed.

Description

Technical Field

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

[0002] In modern laser printing technology, the toner cartridge is a core component, and its performance directly affects print quality and the lifespan of the equipment. The working principle of the toner cartridge is based on the photoelectric properties of the photosensitive drum surface. Through a series of processes such as charging, exposure, development, transfer, and fixing, toner is transferred onto the paper to form an image. The toner cartridge scraper plays a crucial role in this process, responsible for cleaning the toner residue on the photosensitive drum surface, ensuring that the photosensitive drum can continue to work normally.

[0003] However, existing toner cartridge scrapers have many problems in practical applications. For example, with traditional integrated scraper designs, once the scraper shows partial wear or damage, the entire scraper needs to be replaced, which not only increases maintenance costs but also wastes resources. Furthermore, when an integrated scraper contacts the photosensitive drum surface, it's difficult to ensure a tight fit along its entire length, easily creating cleaning dead zones. This results in residual toner causing black spots and streaks during subsequent printing, severely affecting print quality. Taking a common laser printer toner cartridge from a certain brand as an example, after a period of use, users frequently report problems such as blurry text and striped images in printed documents. Inspection revealed that this was due to scraper wear, which prevented effective cleaning of the photosensitive drum surface, causing toner accumulation and affecting normal toner transfer and imaging. Therefore, this paper proposes a toner cartridge with an integrated scraper. Utility Model Content

[0004] The main objective of this invention is to provide a toner cartridge with a scraper blade, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A toner cartridge with a toner scraper includes a photosensitive roller and a drum frame. The two ends of the photosensitive roller are rotatably mounted inside the drum frame. A combined scraper for cleaning residual toner powder and other impurities on the surface of the photosensitive roller is fixedly installed inside the drum frame.

[0007] The combined scraper includes a metal frame and several oblique blade bodies;

[0008] The metal base frame is provided with a number of slots arranged in a straight line at equal intervals, and the head end of the oblique blade body is installed on the metal base frame by fitting and engaging with the inner wall of the slots;

[0009] The end of the oblique blade body is provided with a bending scraper edge facing the direction from which the photosensitive roller turns, and the bending scraper edge and the central axis in the photosensitive roller intersect each other, and the bending scraper edge of the oblique blade body and the outer wall of the photosensitive roller maintain line contact and fit.

[0010] The distance between two adjacent oblique blade bodies is less than the lateral width of the oblique blade body, and the bending scraper edges of two adjacent oblique blade bodies overlap with the contact portion of the outer wall of the photosensitive roller.

[0011] Preferably, the two ends of the metal base frame are respectively fixedly connected with connecting ears, the connecting ears are provided with mounting holes, the mounting holes are provided with screws, the metal base frame is fitted and installed on the drum frame, and the end of the screw is detachably connected to the metal base frame.

[0012] Preferably, the oblique blade body is provided with an electrostatic eliminator strip, which is in close contact with the inner wall of the slot in the metal base frame, and the metal base frame is grounded to the drum frame through a wire.

[0013] Preferably, the oblique blade body is made of polyurethane rubber, and an elastic compensation block made of silicone is fixedly connected to the head end of the oblique blade body. The elastic compensation block is compressed and set in the slot.

[0014] Preferably, the metal base frame is made of aluminum alloy and is long and narrow. The length of the metal base frame is greater than the axial length of the working surface of the photosensitive roller, and the cross-sectional shape of the slot is trapezoidal, wider at the top and narrower at the bottom.

[0015] Preferably, the distance between two adjacent oblique blade bodies is half the lateral width of the oblique blade body, and the bending angle of the edge of the bending scraper is 30°-45°.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Improved cleaning effect and print quality: The bent scraper edge of the slanted blade body intersects with the central axis of the photosensitive roller and maintains line contact. The contact parts of the bent scraper edges of adjacent slanted blade bodies overlap. This design allows the scraper to fit more tightly against the surface of the photosensitive roller, effectively removing residual toner from various areas of the photosensitive roller surface, reducing cleaning dead corners, and avoiding problems such as black spots, black streaks, blurry text, and striped images in printed documents caused by toner residue, thus significantly improving print quality.

[0018] 2. Reduced maintenance costs and improved resource utilization: Traditional one-piece scrapers require replacement of the entire scraper once a part is damaged. The combined scraper of this utility model is composed of multiple oblique blade bodies. When a certain oblique blade body is worn or damaged, only the corresponding oblique blade body needs to be replaced, without replacing the entire scraper, which greatly reduces maintenance costs and also reduces resource waste.

[0019] 3. Stable structure and convenient installation: The metal base frame is made of aluminum alloy and is long and narrow with a length greater than the axial length of the working surface of the photosensitive roller, providing stable support for the slanted blade body; the connecting ears at both ends of the metal base frame are connected to the drum frame with screws, making installation and disassembly convenient; the slot adopts a trapezoidal cross-section that is wider at the top and narrower at the bottom, which fits tightly with the head end of the slanted blade body, further enhancing the stability of the scraper structure.

[0020] 4. Static Electricity Elimination and Adhesion Optimization: The static electricity elimination strip on the slanted blade body is in close contact with the inner wall of the metal base slot. The metal base is grounded to the drum frame through a wire, which can eliminate the static electricity generated by the scraper during operation and prevent static electricity from adsorbing toner and affecting the cleaning effect. At the same time, the elastic compensation block at the head end of the slanted blade body is compressed and set in the slot, which can automatically adjust the position of the slanted blade body according to the slight changes on the surface of the photosensitive roller, ensuring that it is always in close contact with the photosensitive roller. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the connection structure between the combined scraper and the photosensitive roller in this utility model;

[0023] Figure 3 This is a schematic diagram of the metal frame structure in this utility model;

[0024] Figure 4 This is a schematic diagram of the oblique blade body in this utility model.

[0025] In the diagram: 1. Combined scraper; 11. Metal base frame; 111. Slot; 112. Connecting ear; 113. Screw; 12. Slanted blade body; 121. Bending scraper edge; 122. Elastic compensation block; 123. Static elimination strip; 2. Photosensitive roller; 3. Drum frame. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figures 1-4 As shown, a toner cartridge with a scraper includes a combined scraper 1, a photosensitive roller 2, and a drum frame 3. The combined scraper 1 is fixedly installed inside the drum frame 3, and both ends of the photosensitive roller 2 are installed inside the drum frame 3 to ensure that the photosensitive roller 2 can rotate flexibly inside the drum frame 3.

[0028] refer to Figure 2 and Figure 3As shown, the combined scraper 1 includes a metal base frame 11 and several oblique blade bodies 12. The metal base frame 11 is provided with several slots 111 arranged in a straight line at equal intervals. The head end of the oblique blade body 12 is fitted into the metal base frame 11 by fitting into the inner wall of the slot 111. The metal base frame 11 is made of aluminum alloy and is long and narrow. The length of the metal base frame 11 is greater than the axial length of the working surface of the photosensitive roller 2. The cross-sectional shape of the slot 111 is trapezoidal, wider at the top and narrower at the bottom. Connecting ears 112 are fixedly connected to both ends of the metal base frame 11. The connecting ears 112 are provided with mounting holes and screws 113 are provided in the mounting holes. The metal base frame 11 is fitted into the drum frame 3. The end of the screw 113 is detachably connected to the metal base frame 11.

[0029] The assembly process of the combined scraper 1 is as follows: the metal base frame 11 is fitted and installed on the drum frame 3 at the corresponding position. The mounting holes on the connecting ears 112 at both ends of the metal base frame 11 are aligned with the corresponding holes on the drum frame 3. Then, the screws 113 are screwed into the metal base frame 11 through the mounting holes to firmly fix the metal base frame 11 on the drum frame 3.

[0030] refer to Figure 4 As shown, the end of the oblique blade body 12 is provided with a bending scraper edge 121 facing the direction from which the photosensitive roller 2 turns. The bending scraper edge 121 and the central axis of the photosensitive roller 2 intersect each other. The bending scraper edge 121 of the oblique blade body 12 and the outer wall of the photosensitive roller 2 maintain line contact and fit. The distance between two adjacent oblique blade bodies 12 is less than the lateral width of the oblique blade body 12. The contact parts of the bending scraper edges 121 of two adjacent oblique blade bodies 12 and the outer wall of the photosensitive roller 2 overlap. The distance between two adjacent oblique blade bodies 12 is half the lateral width of the oblique blade body 12. The bending angle of the bending scraper edge 121 is 30°-45°. The oblique blade body 12 is made of polyurethane rubber. The first end of the oblique blade body 12 is fixedly connected to an elastic compensation block 122 made of silicone. The elastic compensation block 122 is compressed and set in the slot 111.

[0031] Installation process of the slanted blade body 12: Align the elastic compensation block 122 at the head end of the slanted blade body 12 with the slot 111 and insert it. Since the elastic compensation block 122 is made of silicone and is in a compressed state, it will generate elastic force in the slot 111, which can automatically adjust the position of the slanted blade body 12 according to the surface of the photosensitive roller 2, so as to ensure the fit between the slanted blade body 12 and the photosensitive roller 2.

[0032] It should be added that the oblique blade body 12 is provided with an electrostatic elimination strip 123. The electrostatic elimination strip 123 is in close contact with the inner wall of the slot 111 in the metal base frame 11. The metal base frame 11 is grounded to the drum frame 3 through a wire. In this way, the static electricity generated during the operation of the toner cartridge can be promptly conducted to the ground through the electrostatic elimination strip 123, the metal base frame 11 and the wire, avoiding interference of static electricity with the toner cleaning and printing process.

[0033] In this embodiment, when the drum is working, the photosensitive roller 2 rotates inside the drum frame 3. The bent scraper edge 121 of the oblique blade body 12 faces the direction from which the photosensitive roller 2 rotates. Since the bent scraper edge 121 intersects with the central axis of the photosensitive roller 2 and maintains line contact with the outer wall of the photosensitive roller 2, the contact parts of the bent scraper edges 121 of adjacent oblique blade bodies 12 overlap. During the rotation of the photosensitive roller 2, the oblique blade body 12 can effectively scrape off the residual toner on the surface of the photosensitive roller 2. Furthermore, because the oblique blade body 12 is made of polyurethane rubber, it has good elasticity and wear resistance, ensuring the cleaning effect without damaging the surface of the photosensitive roller 2.

[0034] If, after a period of use, a wear or damage is found on one of the bevel blade bodies 12, affecting the cleaning effect, simply unscrew the corresponding screw 113, remove the metal base 11 from the drum unit 3, remove the damaged bevel blade body 12 from the slot 111, replace it with a new bevel blade body 12, and reinstall it according to the above installation steps. The toner cartridge can then be used normally again. The operation is simple and convenient.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A toner cartridge with a toner scraper, comprising a photosensitive roller (2) and a drum frame (3), wherein both ends of the photosensitive roller (2) are rotatably mounted within the drum frame (3), characterized in that: The drum frame (3) is equipped with a combined scraper (1) for cleaning residual carbon powder impurities on the surface of the photosensitive roller (2). The combined scraper (1) includes a metal frame (11) and several oblique blade bodies (12). The metal base frame (11) is provided with a number of slots (111) arranged in a straight line at equal intervals. The head end of the oblique blade body (12) is installed on the metal base frame (11) by fitting and engaging with the inner wall of the slots (111). The end of the oblique blade body (12) is provided with a bending scraper edge (121) facing the direction from which the photosensitive roller (2) turns, and the bending scraper edge (121) and the central axis of the photosensitive roller (2) intersect each other, and the bending scraper edge (121) of the oblique blade body (12) and the outer wall of the photosensitive roller (2) maintain line contact and fit. The distance between two adjacent oblique blade bodies (12) is less than the lateral width of the oblique blade body (12), and the bending scraper edge (121) of two adjacent oblique blade bodies (12) overlaps with the contact portion of the outer wall of the photosensitive roller (2).

2. The toner cartridge with a scraper according to claim 1, characterized in that: The metal base frame (11) is fixedly connected to two ends of a connecting ear (112). The connecting ear (112) has an installation hole, and a screw (113) is provided in the installation hole. The metal base frame (11) is fitted onto the drum frame (3), and the end of the screw (113) is detachably connected to the metal base frame (11).

3. The toner cartridge with a scraper according to claim 1, characterized in that: The oblique blade body (12) is provided with an electrostatic elimination strip (123), which is in close contact with the inner wall of the slot (111) in the metal base frame (11). The metal base frame (11) is grounded to the drum frame (3) through a wire.

4. The toner cartridge with a scraper according to claim 1, characterized in that: The oblique blade body (12) is made of polyurethane rubber. The head end of the oblique blade body (12) is fixedly connected to an elastic compensation block (122) made of silicone. The elastic compensation block (122) is compressed and set in the slot (111).

5. The toner cartridge with a scraper according to claim 1, characterized in that: The metal base frame (11) is made of aluminum alloy and is long and narrow. The length of the metal base frame (11) is greater than the axial length of the working surface of the photosensitive roller (2). The cross-sectional shape of the slot (111) is trapezoidal, wider at the top and narrower at the bottom.

6. The toner cartridge with a scraper according to claim 1, characterized in that: The distance between two adjacent oblique blade bodies (12) is half the lateral width of the oblique blade body (12), and the bending angle of the edge (121) of the bending scraper is 30°-45°.

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