Reinforced selenium drum charging roller

Abstract

The utility model discloses a reinforced selenium drum charging roller, including hollow roll, the hollow roll outer surface is wrapped with conductive layer, the conductive layer outer surface is wrapped with nylon outer surface layer, still include setting in the conductive terminal of hollow roll both ends, be provided with the anti -skidding connecting cover structure between the conductive terminal with the nylon outer surface layer, be provided with the anti -skidding connecting plug structure between the conductive terminal with the hollow roll, the conductive layer is by carbon nanotube and macromolecular polymer compound, through the optimization structure design and material selection, solve the connection not firm, the uneven conduction, the poor wear resistance etc.

Description

Technical Field

[0001] This utility model relates to the field of printer accessories technology, and in particular to a reinforced toner cartridge charging roller. Background Technology

[0002] As a core component of electronic imaging equipment, the performance of the toner cartridge charging roller directly affects print quality and equipment lifespan. Current technologies commonly suffer from the following problems with charging rollers: Traditional charging rollers often use simple sleeve or adhesive connections between the conductive terminals and the roller body, which easily loosen after prolonged use, leading to poor contact or even detachment, affecting charging efficiency; poor conductivity uniformity, with uneven distribution or insufficient conductivity of the conductive layer material in some charging rollers, resulting in uneven charge distribution on the toner cartridge surface, causing blurry printing, ghosting, and other phenomena; and insufficient wear resistance: long-term friction between the outer surface of the charging roller and the toner cartridge easily causes wear, shortening its lifespan and requiring frequent replacement.

[0003] Therefore, the existing technology of printer accessories needs further improvement. Utility Model Content

[0004] The purpose of this invention is to provide a reinforced toner cartridge charging roller. By optimizing the structural design and material selection, it solves the problems of weak connection, uneven conductivity, and poor wear resistance in the existing technology, thereby improving the service life of the charging roller and the printing quality.

[0005] To achieve the above objectives, the present invention adopts the following solution:

[0006] A reinforced toner cartridge charging roller includes a hollow roller, the outer surface of which is covered with a conductive layer, the outer surface of which is covered with a nylon outer layer, and conductive terminals disposed at both ends of the hollow roller. An anti-slip connecting sleeve structure is disposed between the conductive terminals and the nylon outer layer, and an anti-slip connecting plug structure is disposed between the conductive terminals and the hollow roller. The conductive layer is composed of carbon nanotubes and a polymer composite.

[0007] Furthermore, the anti-slip connecting sleeve structure includes a rubber sleeve body disposed on the outer circumference of the conductive terminal, and each of the two ends of the outer circumference of the nylon outer surface layer is provided with an anti-slip outer wave pattern, and the rubber sleeve body is fitted onto the surface of the corresponding anti-slip outer wave pattern at one end.

[0008] Furthermore, the inner surface of the conductive terminal is provided with a conductive covering layer that can be electrically connected to the conductive layer.

[0009] Furthermore, the anti-slip connecting plug structure includes an anti-slip inner corrugation disposed on the inner wall of the hollow roller, and a rubber plug is disposed on the conductive terminal, the rubber plug being engaged with the corresponding end and the anti-slip inner corrugation.

[0010] Furthermore, the rubber sleeve and the rubber plug are made of nitrile rubber.

[0011] Furthermore, the outer surface of the nylon outer layer is provided with a groove array structure to improve wear resistance.

[0012] Furthermore, the conductive terminal is made of a copper alloy and has a silver layer plated on its outer surface to reduce contact resistance.

[0013] In summary, the advantages of this utility model over the prior art are:

[0014] This invention addresses the shortcomings of existing printer accessory technology. Through its structural design, it offers the following advantages: The anti-slip connecting sleeve and anti-slip connecting plug structures enhance the connection between the conductive terminals and the nylon outer layer, and between the conductive terminals and the hollow roller, respectively. This dual anti-slip design significantly improves connection strength, allowing it to withstand frequent use and high-speed operation, greatly reducing the risk of loosening and ensuring stable operation of the charging roller. The conductive layer, made of carbon nanotubes and polymer composites, effectively reduces overall resistance, making current transmission more stable and efficient. This results in uniform charge distribution on the drum surface, reducing printing blur and ghosting, and improving print quality. The nylon outer layer disperses friction with the drum, effectively reducing wear on the charging roller surface, extending its service life, and lowering replacement frequency and operating costs. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 This utility model Figure 1 Sectional view along line AA;

[0017] Figure 3 This utility model Figure 2 A magnified view of section B. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-3This utility model provides a reinforced toner cartridge charging roller, including a hollow roller 1, the outer surface of the hollow roller 1 is wrapped with a conductive layer 2, the outer surface of the conductive layer 2 is wrapped with a nylon outer layer 3, and also includes conductive terminals 4 disposed at both ends of the hollow roller 1. An anti-slip connecting sleeve structure 5 is disposed between the conductive terminals 4 and the nylon outer layer 3, and an anti-slip connecting plug structure 6 is disposed between the conductive terminals 4 and the hollow roller 1. The conductive layer 2 is composed of carbon nanotubes and polymer composites.

[0020] The steel shaft inside the charging roller is 3-5mm in diameter. This 3-5mm diameter provides sufficient rigidity support while also saving costs.

[0021] The basic functional structure is formed by using a hollow roller 1 as the main frame, wrapped with a conductive layer 2 and a nylon outer layer 3. The conductive layer 2 provides conductivity, while the nylon outer layer 3 provides wear-resistant protection. The two have a clear division of labor, laying the foundation for the normal operation of the charging roller.

[0022] A double anti-slip structure is provided between the conductive terminals 4 at both ends and the roller body. In the anti-slip connecting sleeve structure 5, the rubber sleeve 501 on the outer circumference of the conductive terminal 4 and the anti-slip outer corrugations 502 at both ends of the nylon outer surface layer 3 are tightly fitted. The elasticity of the rubber and the concave-convex structure of the corrugations increase the contact friction and prevent relative displacement between the conductive terminal and the nylon outer surface layer. In the anti-slip connecting plug structure 6, the anti-slip inner corrugations 601 on the inner wall of the hollow roller 1 and the rubber plug 602 on the conductive terminal 4 are interlocked. The mechanical interlocking enhances the connection stability between the conductive terminal and the hollow roller. The double protection ensures that the connection of each component is firm.

[0023] The conductive coating layer 100 on the inner surface of the conductive terminal 4 is tightly electrically connected to the conductive layer 2, reducing contact resistance and ensuring efficient current transmission. The groove array structure on the surface of the nylon outer layer 3 reduces the contact area with the drum by changing the surface morphology, disperses frictional forces, and improves wear resistance. The conductive layer 2 is made of carbon nanotubes and polymer composites, giving full play to the excellent conductivity of carbon nanotubes and improving the overall conductivity uniformity. The conductive terminal 4 is made of copper alloy and plated with silver. The good conductivity and mechanical strength of copper alloy, combined with the characteristics of silver layer to reduce contact resistance, further optimizes conductivity.

[0024] The anti-slip connecting sleeve structure 5 of this utility model includes a rubber sleeve body 501 disposed on the outer circumference of the conductive terminal 4. The outer circumference of both ends of the nylon outer outer layer 3 is provided with anti-slip outer wave pattern 502. The rubber sleeve body 501 is sleeved on the surface of the corresponding anti-slip outer wave pattern 502 at one end.

[0025] The conductive terminal 4 of this invention has a conductive covering layer 100 on its inner surface that can be electrically connected to the conductive layer 2.

[0026] The anti-slip connecting plug structure 6 of this utility model includes an anti-slip inner corrugation 601 disposed on the inner wall of the hollow roller 1, and a rubber plug 602 disposed on the conductive terminal 4, the rubber plug 602 being engaged in the anti-slip inner corrugation 601 at one end.

[0027] The rubber sleeve 501 and the rubber plug 602 of this invention are made of nitrile rubber.

[0028] The nylon outer layer 3 of this invention has a groove array structure on its surface to improve wear resistance.

[0029] The conductive terminal 4 of this invention is made of copper alloy and has a silver layer plated on its outer surface to reduce contact resistance.

[0030] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A reinforced selenium drum charging roller, characterized by: The device includes a hollow roller (1), the outer surface of which is covered with a conductive layer (2), the outer surface of which is covered with a nylon outer layer (3), and conductive terminals (4) disposed at both ends of the hollow roller (1). An anti-slip connecting sleeve structure (5) is disposed between the conductive terminals (4) and the nylon outer layer (3), and an anti-slip connecting plug structure (6) is disposed between the conductive terminals (4) and the hollow roller (1). The conductive layer (2) is composed of carbon nanotubes and polymer composites. The hollow roller (1) has a steel shaft inside, with a size of 3-5mm.

2. The reinforced selenium drum charging roller according to claim 1, characterized in that: The anti-slip connecting sleeve structure (5) includes a rubber sleeve (501) disposed on the outer circumference of the conductive terminal (4), and anti-slip outer wavy lines (502) are provided on the outer circumference of both ends of the nylon outer outer layer (3), and the rubber sleeve (501) is sleeved on the surface of the corresponding anti-slip outer wavy line (502).

3. The reinforced selenium drum charging roller of claim 2, wherein: The inner surface of the conductive terminal (4) is provided with a conductive cover layer (100) that can be electrically connected to the conductive layer (2).

4. The reinforced selenium drum charging roller of claim 3, wherein: The anti-slip connecting plug structure (6) includes an anti-slip inner corrugation (601) disposed on the inner wall of the hollow roller (1), and a rubber plug (602) is disposed on the conductive terminal (4), the rubber plug (602) being engaged in the anti-slip inner corrugation (601) at one end.

5. The reinforced selenium drum charging roller of claim 4, wherein: The rubber sleeve (501) and the rubber plug (602) are made of nitrile rubber.

6. The reinforced selenium drum charging roller of claim 5, wherein, The surface of the nylon outer layer (3) is provided with a groove array structure to improve wear resistance.

7. The reinforced selenium drum charging roller of claim 6, wherein, The conductive terminal (4) is made of copper alloy and has a silver layer plated on its outer surface to reduce contact resistance.

Images