Multi-layer cleaning scraper suitable for duplicator drum assembly

Abstract

The utility model relates to a multilayer cleaning scraper suitable for a duplicator drum assembly, which comprises a scraper body, a connecting end is arranged on the scraper body, the scraper body comprises a protective layer, a cleaning layer and a supporting layer, the protective layer, the cleaning layer and the supporting layer are stacked from top to bottom, and the working ends of the protective layer, the cleaning layer and the supporting layer are arranged in a step shape. The working end of the protective layer is in an arc shape, the connecting end is fixed to the supporting layer, and a connecting hole is formed in the connecting end. According to the design of the cutter body, on one hand, the protective layer is used for protecting the surface of the drum core and reducing abrasion damage, and on the other hand, waste ink, paper scraps and dust are prevented from flowing back, so that stains on printed or copied paper cannot be caused; the surface of the selenium drum is cleaned through the cleaning layer; the rigidity of the supporting layer is used for supporting the cleaning layer, so that the cleaning layer is not prone to deformation, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of photocopier technology, and more specifically, to a multi-layer cleaning scraper suitable for photocopier drum assemblies. Background Technology

[0002] In printing and copying equipment, the cleaning blade is a key component, primarily used to remove dust, paper scraps, and other debris left on the toner cartridge during printing or copying, without damaging the photosensitive coating of the toner cartridge, thus ensuring copy quality. The quality of the cleaning blade is crucial, directly determining copy quality and the lifespan of the toner cartridge.

[0003] Cleaning scrapers are typically made of polyurethane (PU), which usually has high transparency and a specific hardness. This hardness is chosen to ensure that the scraper removes toner without damaging the drum unit. Polyurethane also has good abrasion resistance and compression set resistance, allowing it to maintain stable performance over long-term use.

[0004] Existing doctor blades have a lifespan of approximately 60,000 to 70,000 copies. When the machine is not used for a long time, the doctor blade and the drum remain in static contact. Upon restarting, the significant friction can easily cause the doctor blade to deform and become damaged. Furthermore, waste ink, paper dust, and other pollutants from the printing paper and the environment can easily contaminate the drum, affecting the quality of printing or copying. This invention proposes a new solution to address these issues. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a multi-layer cleaning scraper suitable for copier drum assemblies, so as to solve the technical problems mentioned in the background art.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A multi-layer cleaning scraper for copier drum assemblies includes a blade body with a connecting end. The blade body includes a protective layer, a cleaning layer, and a support layer, which are stacked from top to bottom. The working ends of the protective layer, cleaning layer, and support layer are arranged in a stepped manner, and the working end of the protective layer is arc-shaped. The connecting end is fixed to the support layer and has a connecting hole.

[0008] Preferably, the cross-section of the support layer is barbed, the fixed end of the support layer forms an installation groove, and the fixed ends of the protective layer and the cleaning layer are installed in the installation groove of the support layer.

[0009] In any of the above embodiments, it is preferred that the fixed end of the support layer is fastened to the upper end face of the protective layer.

[0010] In any of the above embodiments, it is preferred that the lower end face of the protective layer has a groove one along its length direction, the upper end face of the cleaning layer has a protrusion one, the lower end face of the cleaning layer has a groove two, and the upper end face of the support layer has a protrusion two, with the protrusion one inserted into the groove one and the protrusion two inserted into the groove two.

[0011] In any of the above solutions, it is preferred that the support layer is integrally formed from aluminum alloy, and a positioning groove is provided on the top of the support layer.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] The design of the blade body in this utility model utilizes a protective layer to protect the surface of the drum core, reducing wear and damage, and preventing waste ink, paper dust, and toner from flowing back, thus preventing stains on printed or copied paper; the cleaning layer cleans the surface of the drum; and the rigidity of the support layer supports the cleaning layer, making it less prone to deformation and increasing its lifespan. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a multi-layer cleaning scraper for a copier drum assembly according to the present invention.

[0015] Explanation of the labels in the diagram:

[0016] 1. Blade body; 101. Protective layer; 102. Cleaning layer; 103. Support layer; 104. Mounting groove; 105. Groove one; 106. Raised strip one; 107. Groove two; 108. Raised strip two; 109. Positioning groove; 2. Connecting end; 3. Connecting hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Example:

[0019] Please see Figure 1A multi-layer cleaning scraper for copier drum assemblies includes a blade body 1 with a connecting end 2. The blade body 1 includes a protective layer 101, a cleaning layer 102, and a support layer 103. The protective layer 101, cleaning layer 102, and support layer 103 are stacked from top to bottom, and the working ends of the protective layer 101, cleaning layer 102, and support layer 103 are stepped. The working end of the protective layer 101 is arc-shaped. The cleaning layer 102 is made of polyurethane material. The connecting end 2 is fixed to the support layer 103 and has a connecting hole 3.

[0020] The protective layer 101 protects the drum core surface, reducing wear and tear, and prevents waste ink, paper dust, and toner from flowing back, thus preventing stains on printed or copied paper. The cleaning layer 102 cleans the drum surface. The rigidity of the support layer 103 supports the cleaning layer 102, making it less prone to deformation and increasing its lifespan.

[0021] In this embodiment, the cross-section of the support layer 103 is barbed, and the fixed end of the support layer 103 forms an installation groove 104. The fixed ends of the protective layer 101 and the cleaning layer 102 are installed in the installation groove 104 of the support layer 103. The support layer 103 is used to fix the cleaning layer 102 and the protective layer 101, so that the three form a whole.

[0022] In this embodiment, the fixed end of the support layer 103 is fastened to the upper end face of the protective layer 101; through the above design, the support layer 103 and the protective layer 101 are more tightly bonded.

[0023] In this embodiment, the lower end face of the protective layer 101 is provided with a groove 105 along its length, the upper end face of the cleaning layer 102 is provided with a protrusion 106, the lower end face of the cleaning layer 102 is provided with a groove 107, and the upper end face of the support layer 103 is provided with a protrusion 108. The protrusion 106 is inserted into the groove 105, and the protrusion 108 is inserted into the groove 107. Through the above design, the three parts are detachably connected by mortise and tenon structure, which facilitates production and assembly.

[0024] In this embodiment, the support layer 103 is integrally formed from aluminum alloy, and a positioning groove 109 is provided on the top of the support layer 103; the above design facilitates the positioning and installation of the blade body 1.

[0025] The working process of this utility model is as follows:

[0026] The operator installs the blade 1 onto one side of the toner cartridge, ensuring the cleaning layer 102 adheres to the cartridge. The protective layer 101 protects the drum surface, reducing wear and tear, and prevents waste ink, paper dust, and toner from flowing back, thus preventing stains on printed or copied paper. The cleaning layer 102 cleans the toner cartridge surface. The rigidity of the support layer 103 supports the cleaning layer 102, preventing deformation. The blade 1 will not deform due to insufficient strength, ensuring that the relative position of the blade 1 and the toner cartridge meets usage requirements when the copier is running. This significantly extends the blade's lifespan, reduces maintenance frequency, and lowers operating and maintenance costs. Furthermore, the detachable connection between the connector 2 and the blade 1 allows for quick replacement of the blade 1.

[0027] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A multi-layered cleaning blade suitable for use in a printer drum assembly, comprising a blade body (1) having a connecting end (2) provided thereon, characterized in that: The cutter body (1) comprises a protective layer (101), a cleaning layer (102) and a supporting layer (103), the protective layer (101), the cleaning layer (102) and the supporting layer (103) are arranged in a stack from top to bottom, the working ends of the protective layer (101), the cleaning layer (102) and the supporting layer (103) are arranged in a step shape, the working end of the protective layer (101) is in a circular arc shape, the cleaning layer (102) is made of polyurethane material, the connecting end head (2) is fixed on the supporting layer (103), and the connecting end head (2) is provided with a connecting hole (3).

2. A multi-layered cleaning blade for a printer drum assembly as defined in claim 1, wherein: The cross section of the supporting layer (103) is in an inverted hook shape, the fixed end of the supporting layer (103) forms a mounting groove (104), and the fixed ends of the protective layer (101) and the cleaning layer (102) are mounted in the mounting groove (104) of the supporting layer (103).

3. A multi-layered cleaning blade for a printer drum assembly as defined in claim 2, wherein: The fixed end of the supporting layer (103) is buckled on the upper end face of the protective layer (101).

4. A multi-layered cleaning blade for use in a printer drum assembly as defined in claim 1, wherein: The lower end face of the protective layer (101) is provided with a groove one (105) along the length direction, the upper end face of the cleaning layer (102) is provided with a convex strip one (106), the lower end face of the cleaning layer (102) is provided with a groove two (107), the upper end face of the supporting layer (103) is provided with a convex strip two (108), the convex strip one (106) is inserted into the groove one (105), and the convex strip two (108) is inserted into the groove two (107).

5. A multi-layered cleaning blade for use in a printer drum assembly as defined in claim 1 wherein: The supporting layer (103) is integrally formed by using aluminum alloy material, and the top of the supporting layer (103) is provided with a positioning groove (109).

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