Photosensitive drum cleaning structure and processing box applying same

Abstract

The utility model provides a photosensitive drum cleaning structure and a processing box applying the photosensitive drum cleaning structure, which are applied to image forming equipment. The photosensitive drum cleaning structure comprises a waste powder bin arranged below a photosensitive drum; a knife edge of the waste powder knife is parallel to the axis of the photosensitive drum, is attached to the surface of the photosensitive drum and is used for scraping off waste powder on the photosensitive drum to enable the waste powder to fall into the waste powder bin; the barrier plate is provided with a first edge parallel to the knife edge of the waste powder knife, and the barrier plate and the waste powder knife form an opening above the waste powder bin; and the sealing elements are positioned at the two end parts of the photosensitive drum and are arranged among the shell of the waste powder cabin, the waste powder knife, the photosensitive drum and the barrier plate. Wherein the photosensitive drum is partially located in the opening, and a gap is formed between the first edge and the photosensitive drum. According to the utility model, the protection effect on carbon powder can be effectively improved, the stability of the processing box comprising the device in the actual use process is enhanced, and waste powder is prevented from spilling out of a waste powder bin.

Description

Technical Field

[0001] This application relates to the field of photosensitive drum cleaning structure technology, and in particular to a photosensitive drum cleaning structure and a processing box using the same. Background Technology

[0002] Laser printers achieve imaging through electrophotographic technology. Its core processes include photosensitive drum charging, laser exposure, toner development, transfer, and fixing. During the transfer process, waste toner remaining on the surface of the photosensitive drum needs to be removed by a scraper (waste toner scraper) and collected into the waste toner container.

[0003] However, the existing sealing design of waste powder silos has the following drawbacks:

[0004] The traditional combination of transparent plastic sheet and sponge is prone to gaps due to material aging, loss of elasticity, or installation tolerances. Especially in high-temperature and high-pressure printing environments, the sponge's compression and resilience decreases, making it unable to maintain a continuous fit to the photosensitive drum surface. Furthermore, structural gaps at the interface between the plastic sheet and the waste toner container, along with increased internal pressure caused by waste toner accumulation, force toner out through weak points.

[0005] As can be seen, the aforementioned defects can easily cause waste toner to spill out of the waste toner hopper, contaminating the photosensitive drum and affecting subsequent electrostatic latent imaging operations. Utility Model Content

[0006] The purpose of this utility model embodiment is to provide a photosensitive drum cleaning structure and a processing box using the same, which can solve the above-mentioned problems existing in the prior art.

[0007] To achieve the above objectives, this application adopts the following technical solution:

[0008] This utility model provides a photosensitive drum cleaning structure, applied to the processing box of an image forming device, characterized in that it includes:

[0009] The waste powder container is located below the photosensitive drum;

[0010] The waste powder scraper has a blade parallel to the axis of the photosensitive drum and is attached to the surface of the photosensitive drum. It is used to scrape the waste powder off the photosensitive drum and make it fall into the waste powder hopper.

[0011] A baffle plate has a first edge parallel to the blade of the waste powder knife, and the baffle plate and the waste powder knife form an opening above the waste powder hopper; and

[0012] The sealing elements are located at both ends of the photosensitive drum, and are disposed between the housing of the waste powder bin and the waste powder knife, the photosensitive drum and the baffle plate;

[0013] The photosensitive drum is located within the opening, and a gap is formed between the first edge and the photosensitive drum.

[0014] On the one hand, extensions are provided at both ends of the baffle plate, and a portion of the extension extends between the waste powder knife and the seal, and fits against the upper surface of the seal.

[0015] On one hand, the extension covers the seal, and both sides of the extension protrude beyond the corresponding sides of the seal.

[0016] On one hand, the sealing element has a first connecting surface and a second connecting surface;

[0017] Wherein, the main body of the baffle plate is attached to the second connecting surface, and a portion of the extension is attached to the first connecting surface; and

[0018] The extension located on the first connecting surface is attached to the surface of the photosensitive drum.

[0019] On the one hand, the extension and the baffle are integrally formed, and an arc-shaped bend is provided at the connection between the extension and the baffle.

[0020] On the one hand, the waste powder bin includes a first base plane, and the first included angle T between the plane where the baffle plate is located and the first base plane is within 90 degrees;

[0021] The first included angle T represents the angle between the plane where the baffle plate is located and the first base plane located on one side of the waste powder bin.

[0022] On the one hand, the sealing element is made of sealing sponge.

[0023] On the one hand, the width of the gap between the first edge and the surface of the photosensitive drum is 1 to 2 millimeters.

[0024] On the one hand, the height difference between the first edge and the blade of the waste powder knife in the vertical direction is 1 to 2 millimeters.

[0025] This utility model also provides a processing box, which includes the photosensitive drum cleaning structure as described in any of the preceding claims.

[0026] The beneficial effects of this application are as follows:

[0027] 1. By placing the baffle plate at the gap between the photosensitive drum and the housing, waste toner spillage from the waste toner bin can be prevented. The seal is located at both ends of the photosensitive drum, connecting the waste toner bin housing, waste toner blade, photosensitive drum, and baffle plate, which can prevent waste toner from overflowing from both sides and improve the sealing effect of the waste toner bin.

[0028] 2. The first edge of the baffle plate maintains a gap with the surface of the photosensitive drum, and the first edge is parallel to the blade of the waste toner knife, so that the waste toner on the surface of the photosensitive drum can smoothly enter the waste toner bin and be scraped off and collected, ensuring that the waste toner scraped off by the waste toner knife can fall accurately into the predetermined waste toner bin.

[0029] 3. By covering the seal with the extension and extending its edges beyond the seal by a certain distance, toner can be prevented from falling onto the seal's upper surface. Furthermore, by creating an arc-shaped first connecting surface and a flat second connecting surface on the seal, with the arc center of the first connecting surface coinciding with the rotation center of the photosensitive drum, and the extension adhering to the surface of the photosensitive drum, the rotation of the photosensitive drum acts on the extension rather than the seal, preventing seal wear, ensuring sealing performance, and extending service life.

[0030] 4. By setting up baffles and seals, and by reasonably setting gaps, the device's protection against toner is effectively improved, and the stability of the processing box, including the device, is enhanced in actual use. Attached Figure Description

[0031] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0032] Figure 1 This is a schematic diagram of the overall structure of a processing box according to the present invention;

[0033] Figure 2 This is a structural schematic diagram of a cross-section of a processing box according to the present invention;

[0034] Figure 3 This is a structural schematic diagram of a cross-section of a processing box according to the present invention;

[0035] Figure 4 This is a structural schematic diagram of a cross-section of a processing box according to the present invention;

[0036] Figure 5 This is a structural schematic diagram of the housing position of a processing box according to the present invention;

[0037] Figure 6 This is a partial structural diagram of the hidden bottom shell of a processing box according to the present invention;

[0038] Figure 7 This is a schematic diagram of the connection position between the blocking structure of the processing box and the waste powder blade according to the present invention;

[0039] Figure 8 This is a cross-sectional structural diagram of a processing box according to the present invention;

[0040] Figure 9 This is a cross-sectional structural diagram of a processing box according to the present invention;

[0041] Figure 10 This is a partial structural diagram of the slot position of a processing box according to the present invention;

[0042] Figure 11 This is a schematic diagram of the structure of the baffle plate of a processing box according to the present invention;

[0043] Figure 12 This is a structural schematic diagram of a sealing element for a processing box according to the present invention;

[0044] Figure 13 This is a schematic diagram of the first included angle T position of a processing box according to the present invention.

[0045] In the picture:

[0046] 100. Processing box; 110. Photosensitive drum; 120. Waste powder knife; 121. Knife edge; 130. Waste powder hopper; 131. Housing; 1310. Snap-fit ​​groove; 1311. First base plane;

[0047] 200. Blocking structure; 210. Blocking plate; 211. First edge; 212. Extension; 2120. Arc-shaped bend; 220. Seal; 221. First connecting surface; 222. Second connecting surface; 223. Third connecting surface; 224. Fourth connecting surface;

[0048] 300, opening; 310, gap. Detailed Implementation

[0049] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not 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 application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0053] In the description of this specification, references to terms such as "an embodiment," "example," 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, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0055] Please see Figures 1 to 13 This utility model provides a processing box 100, which includes at least a photosensitive drum 110 for printing, a waste toner blade 120 with a blade 121 attached to the surface of the photosensitive drum 110, and a waste toner container 130 disposed below the photosensitive drum 110 for receiving waste toner. The blade 121 is parallel to the axis of the photosensitive drum 110 and is attached to the surface of the photosensitive drum 110. When the photosensitive drum 110 is in operation, the printing waste toner on the surface of the photosensitive drum 110 is scraped off by the blade 121 of the waste toner blade 120 and falls into the waste toner container 130, ensuring the cleanliness of the surface of the photosensitive drum 110 and the printing quality of the processing box 100.

[0056] The waste toner cartridge 100 can be used in image forming devices that generate waste toner during operation, such as laser printers, copiers, and laser multifunction printers. Therefore, the waste toner can be stored in the waste toner bin 130, thereby preventing waste toner from scattering and causing equipment contamination and print quality degradation.

[0057] In one embodiment, the processing box 100 provided by this utility model further includes a photosensitive drum cleaning structure, and a blocking structure 200 is connected to the photosensitive drum cleaning structure. The blocking structure 200 can be used to improve the sealing effect of the waste powder bin 130, thereby ensuring that the waste powder in the waste powder bin 130 is not easily leaked, and can also be used to ensure that the waste powder scraped off by the waste powder knife 120 can fall smoothly and accurately into the predetermined waste powder bin 130.

[0058] It should be noted that, since the waste toner container 130 is disposed within the processing box 100, the waste toner container 130 includes at least a housing 131 and a cavity for containing waste toner. The housing 131 of the waste toner container 130 may be disposed independently or shared with the housing of the image forming device. In this embodiment, the housing 131 of the waste toner container 130 is shared with the housing of the image forming device, and will be referred to as housing 131 in the following description.

[0059] Specifically, the blocking structure 200 used in the waste powder hopper 130 includes a blocking plate 210 and a sealing element 220. The blocking plate 210 is a sheet-like structure and is disposed at a notch formed between the photosensitive drum 110 and the housing 131. This notch is located above the waste powder hopper 130, and the blocking plate 210 can be used to prevent waste powder in the waste powder hopper 130 from spilling out through the notch.

[0060] Furthermore, the baffle plate 210 has a first edge 211 parallel to the cutting edge 121 of the waste toner blade 120. The first edge 211 is parallel to the cutting edge 121 of the waste toner blade 120. The baffle plate 210 and the waste toner blade 120 form an opening 300 above the waste toner bin 130. The lower part of the photosensitive drum 110 is located within the opening 300, and a gap 310 is maintained between the first edge 211 of the baffle plate 210 and the surface of the photosensitive drum 110, allowing toner adhering to the surface of the photosensitive drum 110 to pass through. Therefore, during the rotation of the photosensitive drum 110, waste toner on the surface of the photosensitive drum 110 can enter the waste toner bin 130 through this gap 310. As the photosensitive drum 110 rotates further, the cutting edge 121 of the waste toner blade 120 can scrape off the waste toner on the surface of the photosensitive drum 110 and let it fall into the waste toner bin 130.

[0061] In one embodiment, the width of the gap 310 between the first edge 211 and the surface of the photosensitive drum 110 can be 1 to 2 millimeters. Preferably, the width can be 1.1 millimeters. By setting the width of the gap 310 between the first edge 211 and the surface of the photosensitive drum 110, it can be ensured that waste toner on the photosensitive drum 110 can smoothly enter the waste toner container 130, and that the waste toner in the waste toner container 130 is not easily spilled out from the gap 310.

[0062] Furthermore, a first base plane 1311 is pre-set within the waste powder bin 130, and the first base plane 1311 is horizontally positioned. The first included angle T between the plane containing the baffle plate 210 and the first base plane 1311 is within 90 degrees. Here, the first included angle T represents the angle between the plane containing the baffle plate 210 and the first base plane 1311 on one side of the waste powder bin 130. Therefore, by setting the first included angle T between the baffle plate 210 and the first base plane 1311 to within 90 degrees, waste powder within the waste powder bin 130 can be effectively prevented from spilling out through the gap 310 between the first edge 211 and the surface of the photosensitive drum 110.

[0063] During actual installation, the vertical height difference between the first edge 211 and the cutting edge 121 of the waste powder knife 120 is 1 to 2 millimeters. Preferably, the height difference is 1 millimeter. By setting the vertical height difference between the first edge 211 and the cutting edge 121 of the waste powder knife 120, the installation accuracy of this device during installation can be effectively improved, and the width of the gap 310 can be ensured.

[0064] Furthermore, the seal 220 is located at both ends of the photosensitive drum 110 and is connected between the housing 131 of the waste toner bin 130, the waste toner blade 120, the photosensitive drum 110, and the baffle plate 210. The seal 220 prevents waste toner in the waste toner bin 130 from overflowing from both sides.

[0065] In one embodiment, the seal 220 may be made of a sealing sponge. However, it is not limited to this and can be determined according to actual needs. For example, the seal 220 may also be made of a material with a certain degree of elasticity, such as silicone or rubber.

[0066] In one embodiment, extensions 212 may be provided at both ends of the baffle plate 210. A portion of the extension 212 extends between the waste powder blade 120 and the seal 220, and the extension 212 is in contact with the upper surface of the seal 220. Therefore, the extension 212 may be integrally formed with the baffle plate 210, and an arc-shaped bend 2120 to prevent stress concentration is provided at the connection between the extension 212 and the baffle plate 210. By providing the arc-shaped bend 2120, the stress between the extension 212 and the baffle plate 210 at the bending position can be effectively released, further improving the connection strength between the extension 212 and the baffle plate 210.

[0067] The extension 212 covers the seal 220, and both sides of the extension 212 protrude beyond the corresponding sides of the seal 220. This arrangement prevents toner from falling onto the upper surface of the seal 220. Preferably, in one embodiment, both sides of the extension 212 protrude 1 to 2 millimeters beyond the sides of the seal 220.

[0068] In one embodiment, to improve the sealing effect of the seal 220 between the photosensitive drum 110 and the baffle plate 210, an arc-shaped first connecting surface 221 and a planar second connecting surface 222 may be provided on the seal 220. The connection between the first connecting surface 221 and the second connecting surface 222 is a natural transition, and the main body of the baffle plate 210 is fitted to the first connecting surface 221, while a portion of the extension 212 is fitted to the second connecting surface 222.

[0069] It should be noted that the first connecting surface 221 has an arc-shaped structure, and the center of this arc coincides with the rotation center of the photosensitive drum 110. Furthermore, the extension 212 located on the first connecting surface 221 is in contact with the surface of the photosensitive drum 110. Therefore, when the photosensitive drum 110 rotates, the end of the photosensitive drum 110 directly acts on the extension 212. This avoids the photosensitive drum 110 directly acting on the seal 220, thus preventing wear and tear on the seal 220. This effectively ensures the sealing performance of the seal 220 during use and improves its actual service life.

[0070] In one embodiment, the housing 131 of the waste powder hopper 130 has a snap-fit ​​groove 1310. The snap-fit ​​groove 1310 is adapted to the lower contour of the seal 220, so that the lower part of the seal 220 can be snapped into the snap-fit ​​groove 1310. By snapping the seal 220 into the snap-fit ​​groove 1310, the seal 220 and the housing 131 can be connected to each other. At the same time, the sealing performance of the seal 220 and the housing 131 at the connection position can be improved to prevent toner leakage from the connection position between the seal 220 and the housing 131.

[0071] Furthermore, the seal 220 may also have a third connecting surface 223 and a fourth connecting surface 224. The third connecting surface 223 and the fourth connecting surface 224 are parallel to each other and are stepped apart. Understandably, the third connecting surface 223 contacts the blade portion and extension 212 of the waste powder cutter 120, and the fourth connecting surface 224 contacts the main body of the waste powder cutter 120. This fills the gap between the lower edge of the waste powder cutter 120 and the lower edge of the extension 212 and the waste powder bin 130, thereby improving the sealing performance of the waste powder bin 130, primarily on both sides.

[0072] Based on this, a baffle plate 210 is provided on the housing 131 of the waste toner hopper 130, and seals 220 are provided at both ends of the photosensitive drum 110. Simultaneously, a gap 310 is provided between the first edge 211 of the baffle plate 210 and the surface of the photosensitive drum 110, allowing waste toner on the photosensitive drum 110 to smoothly enter the waste toner hopper 130. Furthermore, the baffle plate 210 prevents waste toner in the waste toner hopper 130 from easily spilling out through the gap 310. This effectively improves the protection of toner by the device and the stability of the processing box 100, including the device, during actual use.

[0073] In summary, this utility model discloses a photosensitive drum cleaning structure and a processing box using the same. By placing a baffle plate 210 at the notch between the photosensitive drum 110 and the housing 131, it can prevent waste powder from spilling out of the waste powder bin 130. The sealing element 220 is located at both ends of the photosensitive drum 110, connecting the waste powder bin 130 housing 131, the waste powder blade 120, the photosensitive drum 110, and the baffle plate 210, preventing waste powder from overflowing from both sides and improving the sealing effect of the waste powder bin 130. Simultaneously, a gap 310 is maintained between the first edge 211 of the baffle plate 210 and the surface of the photosensitive drum 110, and the first edge 211 is parallel to the cutting edge 121 of the waste powder blade 120, allowing the waste powder on the surface of the photosensitive drum 110 to smoothly enter the waste powder bin 130 and be scraped off and collected, ensuring that the waste powder scraped off by the waste powder blade 120 falls precisely into the predetermined waste powder bin 130.

[0074] By covering the seal 220 with the extension 212 extending beyond the sides of the seal 220 by a certain distance, toner can be prevented from falling onto the upper surface of the seal 220. Furthermore, by providing an arc-shaped first connecting surface 221 and a planar second connecting surface 222 to the seal 220, with the arc center of the first connecting surface 221 coinciding with the rotation center of the photosensitive drum 110, and the extension 212 adhering to the surface of the photosensitive drum 110, the rotation of the photosensitive drum 110 is acted upon by the extension 212 rather than the seal 220, thus preventing wear on the seal 220, ensuring sealing performance, and extending its service life.

[0075] Therefore, by setting up the baffle plate 210 and the seal 220, and by reasonably setting the gap 310, the protection effect of the device on toner is effectively improved, and the stability of the processing box 100 including the device is enhanced in actual use.

[0076] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A photosensitive drum cleaning structure, applied to the processing box (100) of an image forming device, characterized in that, include: Waste powder container (130) is located below the photosensitive drum (110); Waste powder scraper (120), whose blade (121) is parallel to the axis of the photosensitive drum (110) and is attached to the surface of the photosensitive drum (110), is used to scrape the waste powder off the photosensitive drum (110) and make it fall into the waste powder bin (130); A baffle plate (210) has a first edge (211) parallel to the blade (121) of the waste powder cutter (120), and the baffle plate (210) and the waste powder cutter (120) form an opening (300) above the waste powder bin (130); and The sealing element (220) is located at both ends of the photosensitive drum (110). The sealing element (220) is disposed between the housing (131) of the waste powder bin (130) and the waste powder knife (120), the photosensitive drum (110) and the baffle plate (210). A portion of the photosensitive drum (110) is located within the opening (300), and a gap (310) is formed between the first edge (211) and the photosensitive drum (110).

2. The photosensitive drum cleaning structure according to claim 1, characterized in that, Extensions (212) are provided at both ends of the baffle plate (210). Part of the extension (212) extends between the waste powder knife (120) and the seal (220) and fits against the upper surface of the seal (220).

3. The photosensitive drum cleaning structure according to claim 2, characterized in that, The extension (212) covers the entire seal (220), and the two side edges of the extension (212) protrude from the corresponding side of the seal (220).

4. The photosensitive drum cleaning structure according to claim 2, characterized in that, The sealing element (220) has a first connecting surface (221) and a second connecting surface (222); The main body of the baffle plate (210) is attached to the second connecting surface (222), and a portion of the extension (212) is attached to the first connecting surface (221); and The extension (212) located on the first connecting surface (221) is attached to the surface of the photosensitive drum (110).

5. The photosensitive drum cleaning structure according to claim 2, characterized in that, The extension (212) and the baffle (210) are integrally formed, and an arc-shaped bend (2120) is provided at the connection between the extension (212) and the baffle (210).

6. The photosensitive drum cleaning structure according to claim 1, characterized in that, The waste powder bin (130) includes a first base plane (1311), and the first included angle T between the plane where the baffle plate (210) is located and the first base plane (1311) is within 90 degrees; The first included angle T represents the angle between the plane where the baffle plate (210) is located and the first base plane (1311) located on one side of the waste powder bin (130).

7. The photosensitive drum cleaning structure according to claim 1, characterized in that, The seal (220) is made of sealing sponge.

8. The photosensitive drum cleaning structure according to claim 1, characterized in that, The width of the gap (310) between the first edge (211) and the surface of the photosensitive drum (110) is 1 to 2 millimeters.

9. The photosensitive drum cleaning structure according to claim 8, characterized in that, The vertical height difference between the first edge (211) and the blade (121) of the waste powder knife (120) is 1 to 2 millimeters.

10. A processing box, characterized in that, Includes the photosensitive drum cleaning structure as described in any one of claims 1-9.

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