Scraper-free toner cartridge

Abstract

The utility model provides a scraper-free toner cartridge, which comprises a toner bin and a waste toner bin, the waste toner bin is arranged at the output end of the toner bin, a photosensitive drum clamping column is arranged on one side of the conductive end of the waste toner bin, a photosensitive drum positioning surface is arranged on one side of the gear end of the waste toner bin, and the photosensitive drum clamping column is arranged on the other side of the gear end of the waste toner bin. A photosensitive drum is arranged between the photosensitive drum clamping column and the photosensitive drum positioning face, a cleaning brush is arranged on one side of the photosensitive drum and makes contact with the surface of the photosensitive drum, sliding structures are arranged at the two ends of the waste powder bin, roller head fasteners are arranged in the sliding structures in a sliding mode, and the roller head fasteners are connected with the cleaning brush. A connecting column is arranged at the position, corresponding to the waste powder bin, of each roller head fastener, a spring is arranged between each roller head fastener and the corresponding connecting column, a charging roller is arranged between the two roller head fasteners in a buckled mode, and the outer surface of the charging roller makes contact with the outer surface of the photosensitive drum. The utility model relates to the technical field of toner cartridges.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon powder cartridges, in particular to a scraper-free carbon powder cartridge. Background Art

[0002] With the continuous advancement of office automation and information technology, printers, as key devices for information output, are becoming increasingly popular in homes, offices and various commercial scenarios. Laser printers have become the mainstream choice in the market due to their many advantages such as fast printing speed, high image quality and low operating noise. In the laser printing process, the toner cartridge, as the core component to realize the printing function, is responsible for storing toner and accurately transferring toner to paper, thereby completing the final printing job.

[0003] A toner cartridge usually consists of several key parts, including a powder hopper, a waste toner hopper, a photosensitive drum, a charging roller, a magnetic roller, and a scraper. The main function of the scraper is to remove excess toner that has not been successfully transferred to the paper on the surface of the photosensitive drum during its rotation, and to collect the waste toner into the waste toner hopper. However, on the one hand, the scraper will wear out after long-term use, which not only reduces the cleaning efficiency, but also directly affects the printing quality; on the other hand, if the contact pressure between the scraper and the photosensitive drum is improperly adjusted during installation due to errors, it will cause physical damage to the photosensitive drum, increasing the maintenance cost and replacement frequency of the equipment.

[0004] The function of the charging roller is to provide a uniform electrostatic charge to the surface of the photosensitive drum so as to attract carbon powder to form an image. In order to ensure a good charging effect, the distance between the charging roller and the photosensitive drum needs to be precisely controlled. However, in the traditional fixed mode, once the charging roller is installed, it becomes extremely difficult to fine-tune it, and often requires the intervention of professional technicians. In addition, the charging roller will also experience wear during continuous use. The charging roller mounting structure in the existing technology lacks a flexible adjustment mechanism and cannot change the contact pressure between the charging roller and the photosensitive drum in a timely manner, which leads to damage to the surface structure of the photosensitive drum during use. When the charging roller needs to be replaced, the disassembly and assembly steps under the traditional fixed method are cumbersome, and ordinary users find it difficult to complete it independently. They have to rely on professional maintenance services, which undoubtedly increases the user's cost and inconvenience.

[0005] In order to solve the above problems, it is imperative to redesign a scraper-free carbon powder cartridge. Utility Model Content

[0006] In response to the above-mentioned defects of the prior art, the utility model provides a scraper-less toner cartridge, aiming to solve the problems in the prior art that the toner cartridge scraper is easily worn, resulting in reduced cleaning effect and easy damage to the photosensitive drum, as well as the inconvenience in adjusting and replacing the charging roller.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a scraper-free toner cartridge, comprising a powder bin and a waste powder bin, the waste powder bin being arranged at the output end of the powder bin, a photosensitive drum engaging column being provided on one side of the conductive end of the waste powder bin, a photosensitive drum positioning surface being provided on one side of the gear end of the waste powder bin, a photosensitive drum being provided between the photosensitive drum engaging column and the photosensitive drum positioning surface, a cleaning brush being provided on one side of the photosensitive drum, a sliding structure being provided at both ends of the waste powder bin, a roller head fastener being slidably provided in the sliding structure, a connecting column being provided on the roller head fastener corresponding to the position of the waste powder bin, a spring being provided between the roller head fastener and the connecting column, a charging roller being clamped between the two roller head fasteners, and the outer surface of the charging roller being in contact with the outer surface of the photosensitive drum.

[0008] Based on the above, the beneficial effect of a scraper-less toner cartridge is to solve the problems in the prior art that the toner cartridge scraper is easily worn, resulting in reduced cleaning effect and easy damage to the photosensitive drum, as well as the inconvenience in adjusting and replacing the charging roller; it is mainly reflected in: the utility model avoids the problem of reduced cleaning effect caused by scraper wear by adopting a cleaning brush instead of the traditional cleaning scraper. The cleaning brush can gently remove the residual carbon powder on the surface of the photosensitive drum, reducing direct friction on the surface of the photosensitive drum, thereby effectively preventing physical damage to the photosensitive drum and extending the service life of the photosensitive drum; at the same time, the utility model also installs the charging roller by arranging a roller head fastener with a spring in the sliding structure, so that the contact between the charging roller and the photosensitive drum is more flexible. This design can not only automatically adjust the contact pressure between the two according to actual usage conditions, ensuring stability during the charging process, but also facilitates the installation and replacement of the charging roller, reducing the user's maintenance cost.

[0009] Furthermore, the sliding structure includes a fastener bottom support block and a fastener top support block connected to the conductive end of the waste powder bin. The fastener bottom support block and the fastener top support block are both provided with a slide groove on the side close to the cleaning brush. The roller head fastener is slidably connected to the slide groove. The fastener top support block and the roller head fastener are both injection molded of conductive materials.

[0010] Based on the above, the beneficial effect of the sliding structure is that it allows the charging roller to freely adjust its position within a certain range, and can automatically adjust the contact pressure between it and the photosensitive drum through the force of the spring to maintain a good charging effect. The bottom support block of the fastener and the top support block of the fastener not only provide a stable sliding track for the roller head fastener, ensuring its smooth movement in the slide groove, but also the top support block of the fastener and the roller head fastener are both injection molded from conductive materials, ensuring the circuit conduction of the charging roller.

[0011] Furthermore, a conductive end cover is provided on one side of the powder bin, and the conductive end cover is arranged outside the conductive end of the waste powder bin and is electrically connected to the conductive end of the waste powder bin.

[0012] Furthermore, a chip mounting hole is provided on the conductive end cover, a powder filling port is provided at one end of the powder bin close to the conductive end cover, the powder filling port is adjacent to the chip mounting hole, and a chip is snap-fitted on the chip mounting hole.

[0013] Based on the above, the powder filling port is set at the end of the powder bin close to the conductive end cover and adjacent to the chip mounting hole slot. This layout design makes the powder filling operation simpler and faster. Users can add toner directly through the powder filling port by simply removing the chip from the machine without disassembling the toner cartridge, which reduces the difficulty of operation and improves work efficiency.

[0014] Furthermore, a double-notch drop-off column is provided on one side of the chip mounting hole for adapting to the 1100 series printer.

[0015] Furthermore, a conductive strip is formed on the conductive end cap by secondary injection molding of a conductive material, and is used to provide a conductive medium for the printing component in the scraperless toner cartridge.

[0016] Based on the above, the beneficial effect of the conductive strip is to ensure a stable conductive connection between the various components inside the toner cartridge, avoid the problem of unstable electrical performance caused by poor contact or loose connection of the conductive sheet in the past, and ensure the stability of the toner cartridge during operation.

[0017] Furthermore, powder bin expansion bin limiting grooves are symmetrically arranged on both sides of the middle of the waste powder bin, and expansion bin bodies are symmetrically arranged on one side of the powder bin close to the waste powder bin, and the two expansion bin bodies are respectively adapted to the two powder bin expansion bin limiting grooves.

[0018] Based on the above, the beneficial effect of the limiting groove of the powder hopper expansion body is to ensure the stable installation of the expansion body and avoid looseness when the powder hopper and the waste powder hopper are connected and installed.

[0019] In order to more clearly illustrate the above features of the present invention and the objectives to be achieved, the present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the waste toner bin of the present utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the charging roller of the present utility model;

[0022] Figure 3This is a schematic cross-sectional view of the installation of the roller head fastener of the present invention;

[0023] Figure 4 This is a schematic diagram of the powder bin of the present utility model;

[0024] Figure 5 Schematic diagram of the conductive end cap of the present invention.

[0025] Explanation of the accompanying numbers: 1-powder hopper, 11-conductive end cover, 111-chip mounting hole slot, 112-double-notch drop-off column, 113-conductive strip, 12-powder filling port, 13-drop-off chip, 14-expansion hopper body, 2-waste powder hopper, 21-sliding structure, 211-fastener bottom support block, 212-fastener top support block, 213-slide groove, 22-roller head fastener, 23-connecting column, 24-spring, 25-powder hopper expansion hopper body limit slot, 3-photosensitive drum engaging column, 4-photosensitive drum positioning surface, 5-cleaning brush, 6-charging roller. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5 As shown, a scraper-free toner cartridge includes a powder bin 1 and a waste powder bin 2, the waste powder bin 2 is arranged at the output end of the powder bin 1, a photosensitive drum engaging column 3 is provided on one side of the conductive end of the waste powder bin 2, a photosensitive drum positioning surface 4 is provided on one side of the gear end of the waste powder bin 2, a photosensitive drum is arranged between the photosensitive drum engaging column 3 and the photosensitive drum positioning surface 4, a cleaning brush 5 is provided on one side of the photosensitive drum, and the cleaning brush 5 is in contact with the surface of the photosensitive drum, and a sliding structure 21 is provided at both ends of the waste powder bin 2, a roller head fastener 22 is slidingly arranged in the sliding structure 21, and the roller head fastener 22 is provided with a connecting column 23 corresponding to the position of the waste powder bin 2, a spring 24 is provided between the roller head fastener 22 and the connecting column 23, and a charging roller 6 is clamped between the two roller head fasteners 22, and the outer surface of the charging roller 6 is in contact with the outer surface of the photosensitive drum.

[0027] The sliding structure 21 includes a fastener bottom support block 211 and a fastener top support block 212 connected to the conductive end of the waste powder bin 2. The fastener bottom support block 211 and the fastener top support block 212 are both provided with a slide groove 213 on the side close to the cleaning brush 5. The roller head fastener 22 is slidably connected to the slide groove 213. The fastener top support block 212 and the roller head fastener 22 are both injection molded from conductive materials.

[0028] A conductive end cover 11 is provided on one side of the powder bin 1 . The conductive end cover 11 is disposed outside the conductive end of the waste powder bin 2 and is electrically connected to the conductive end of the waste powder bin 2 .

[0029] The conductive end cover 11 is provided with a chip mounting hole 111 , and the powder bin 1 is provided with a powder filling port 12 at one end close to the conductive end cover 11 . The powder filling port 12 is adjacent to the chip mounting hole 111 , and a drop-in chip 13 is snap-fitted onto the chip mounting hole 111 .

[0030] A double-notch drop-off post 112 is provided on one side of the chip mounting hole 111 for adapting to the 1100 series printer.

[0031] The conductive end cap 11 is provided with a conductive strip 113 by secondary injection molding of a conductive material, and is used to provide a conductive medium for the printing component in the scraperless toner cartridge.

[0032] Powder bin expansion bin limiting grooves 25 are symmetrically provided on both sides of the middle of the waste powder bin 2, and an expansion bin body 14 is symmetrically provided on one side of the powder bin 1 close to the waste powder bin 2, and the two expansion bin bodies are respectively adapted to the two powder bin expansion bin limiting grooves 25.

[0033] In summary, the specific implementation of the present invention is as follows: before the printing operation begins, the toner is transported from the powder bin 1 to the developing roller, and the toner will adhere to the surface of the developing roller. At the same time, the charging roller 6 provides a uniform electrostatic charge to the surface of the photosensitive drum through contact with the photosensitive drum, preparing for the subsequent adsorption of the toner. Subsequently, the laser scanning device forms an electrostatic latent image on the photosensitive drum. At this time, the charged toner will be adsorbed from the developing roller to a specific area of ​​the photosensitive drum to form a visible image. When the photosensitive drum rotates to the transfer area, the charged toner is transferred to the paper, completing the printing process. The image is transferred, and then the photosensitive drum continues to rotate. The cleaning brush 5 gently removes the excess toner that has not been transferred from the photosensitive drum surface. This excess toner is then collected in the waste toner bin 2. During the entire process, the contact pressure between the charging roller 6 and the photosensitive drum can be automatically adjusted by the spring 24 in the sliding structure 21, ensuring the stability and reliability of the charging process. When the charging roller 6 needs to be replaced, the user can easily complete it by themselves through simple disassembly and assembly steps after separating the toner bin 1 and the waste toner bin 2. There is no need to remove the side cover and other parts, which greatly reduces maintenance costs.

[0034] Compared with traditional hard scrapers, the cleaning brush 5 significantly reduces the wear on the surface of the photosensitive drum and extends the service life of the photosensitive drum;

[0035] The charging roller 6 maintains appropriate contact pressure with the photosensitive drum through the spring 24 in the sliding structure 21, ensuring that the charging roller 6 can effectively charge the surface of the photosensitive drum. At the same time, this design greatly simplifies the installation and replacement process of the charging roller 6, allowing users to easily complete it without professional tools;

[0036] The toner hopper 1 is responsible for storing toner and transferring it to the photosensitive drum via the stirring rack, powder feed roller, and developer roller. After printing, unused toner is collected by the cleaning brush 5 and sent to the waste toner hopper 2, thus achieving effective management and utilization of toner.

[0037] In addition, the conductive strip 113 on the conductive end cap 11 ensures the electrical signal connection between the printing components in the toner cartridge and the printer, supports the current transmission required for the normal operation of the toner cartridge, and thus ensures the smooth progress of the entire printing process.

[0038] The above description is only the optimal solution embodiment of the present invention and is not intended to limit the present invention. Various modifications or replacements of the present invention made by those skilled in the art without departing from the essence and protection scope of the present invention should also be within the protection scope of the present invention.

Claims

1. A scraper-free toner cartridge, comprising a powder bin (1) and a waste powder bin (2), wherein the waste powder bin (2) is arranged at the output end of the powder bin (1), and is characterized in that: A photosensitive drum engaging column (3) is provided on one side of the conductive end of the waste powder bin (2), a photosensitive drum positioning surface (4) is provided on one side of the gear end of the waste powder bin (2), a photosensitive drum is arranged between the photosensitive drum engaging column (3) and the photosensitive drum positioning surface (4), a cleaning brush (5) is arranged on one side of the photosensitive drum, and the cleaning brush (5) is in contact with the surface of the photosensitive drum. Both ends of the waste powder bin (2) are provided with a sliding structure (21), a roller head fastener (22) is slidingly arranged in the sliding structure (21), and a connecting column (23) is provided on the roller head fastener (22) corresponding to the position of the waste powder bin (2), a spring (24) is provided between the roller head fastener (22) and the connecting column (23), and a charging roller (6) is arranged between the two roller head fasteners (22), and the outer surface of the charging roller (6) is in contact with the outer surface of the photosensitive drum.

2. The scraperless toner cartridge according to claim 1, characterized in that: The sliding structure (21) includes a fastener bottom support block (211) and a fastener top support block (212) connected to the conductive end of the waste powder bin (2). The fastener bottom support block (211) and the fastener top support block (212) are both provided with a slide groove (213) on one side close to the cleaning brush (5). The roller head fastener (22) is slidably connected to the slide groove (213). The fastener top support block (212) and the roller head fastener (22) are both made of conductive material by injection molding.

3. The scraperless toner cartridge according to claim 1, characterized in that: A conductive end cover (11) is provided on one side of the powder bin (1), and the conductive end cover (11) is arranged outside the conductive end of the waste powder bin (2) and is electrically connected to the conductive end of the waste powder bin (2).

4. The scraperless toner cartridge according to claim 3, characterized in that: The conductive end cover (11) is provided with a chip mounting hole (111), and the powder bin (1) is provided with a powder filling port (12) at one end close to the conductive end cover (11), the powder filling port (12) is adjacent to the chip mounting hole (111), and a drop-in chip (13) is configured on the chip mounting hole (111).

5. The scraperless toner cartridge according to claim 4, characterized in that: A double-notched drop-off column (112) is provided on one side of the chip mounting hole slot (111) for adapting to the 1100 series printer.

6. The scraperless toner cartridge according to claim 3, characterized in that: A conductive strip (113) is formed on the conductive end cap (11) by secondary injection molding of a conductive material, and is used to provide a conductive medium for the printing component in the scraperless toner cartridge.

7. The scraperless toner cartridge according to claim 1, characterized in that: Powder bin expansion bin limiting grooves (25) are symmetrically arranged on both sides of the middle of the waste powder bin (2), and an expansion bin body (14) is symmetrically arranged on one side of the powder bin (1) close to the waste powder bin (2), and the two expansion bin bodies are respectively adapted to the two powder bin expansion bin limiting grooves (25).

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