Developing cartridge and drum cartridge

Abstract

The utility model provides a developing box which is detachably mounted on a drum box, the drum box comprises a frame and a photosensitive drum rotatably mounted on the frame, a memory is fixed on the developing box, an electric contact for communicating with a printer is arranged on the memory, and a conductive elastic piece is fixed on the electric contact of the memory; when the developing box is arranged in the printer, the electric contact of the memory is electrically connected with the electric contact of the printer through the conductive elastic piece; rigid contact between the electric contact of the printer and the electric contact of the memory is avoided, the structure is extremely simple, even if the installation precision is low, the conductive elastic piece can effectively compensate the gap by means of the elasticity, and the reliability of the electric contact is improved.

Description

Technical Field

[0001] The utility model relates to the field of printing, in particular to a developing box and a drum box which are detachably installed on an electronic photographic imaging device. Background Art

[0002] Electrophotographic imaging devices, such as LED printers and laser printers, are a common type of printer that uses solid powders such as toner as a developer. The process cartridge, which is a key component of a laser printer, generally includes a photosensitive drum as a photosensitive component, a charging roller or corona wire as a charging component, a cleaning blade as a cleaning component, a developing roller as a developer carrying component, a supply roller as a powder feeding component, a pushing member as a conveying component, a powder discharge knife as a developer layer thickness regulating component, a stirring frame as a stirring component, a gear as a transmission component, a powder bin as a developer storage component, and toner as a developer.

[0003] The photosensitive component is charged by the charging component in a dark environment so that the surface of the photosensitive component is evenly charged. Then, a predetermined light is irradiated to form an electrostatic latent image on the surface of the photosensitive component. The photosensitive component with the electrostatic latent image obtains the developer through the developing component to visualize the latent image and realize development. Then, the developer is transferred to the paper as the substrate by transfer. Finally, the substrate with the developer is heated and fixed to complete the printing. The photosensitive component removes the developer and foreign matter remaining on the surface of the photosensitive component after transfer through the cleaning component. The developing component obtains the developer through the powder feeding component, and the developing component adjusts the layer thickness of the developer to be developed through the developer layer thickness adjustment component. The powder feeding component obtains the developer from the developer storage component. The stirring component is arranged in the developer storage component, and the developer is conveyed to the conveying component by stirring, and the conveying component conveys the developer to the powder feeding component.

[0004] The processing box includes a drum box and a developer box, and the developer box includes a developer bin and a powder bin. Usually, a driving assembly for driving the photosensitive drum, charging roller, developer roller, supply roller, pushing member and stirring frame is provided on the same side of the drum box and the developer box. The driving assembly usually includes a gear set and a power receiving head. The outer side of the gear set and the power receiving head is protected by an end cover.

[0005] The drum box and / or the developer box is provided with a memory for storing information related to the process box.

[0006] There is a processing cartridge, which includes a drum cartridge and a developing cartridge detachably mounted on the drum cartridge. The drum cartridge is provided with a memory for communicating with a printer, the memory is mounted on a retainer, the retainer is slidably mounted on the drum cartridge, and a spring is installed between the retainer and the drum cartridge. After the drum cartridge is loaded into the printer, the electrical contacts of the memory abut against the electrical contacts of the printer, and the spring is compressed to reduce the friction between the electrical contacts of the memory and the electrical contacts of the printer. However, the structure is relatively complex and the manufacturing cost is high. Utility Model Content

[0007] The utility model aims to provide a developing box with simple structure and reliable electrical connection.

[0008] To achieve the above-mentioned purpose, the developer box of the utility model can be detachably mounted on the drum box, and the drum box includes a frame and a photosensitive drum rotatably mounted on the frame. A memory is fixed on the developer box, and the memory is provided with electrical contacts for communicating with a printer, and a conductive elastic member is fixed on the electrical contacts of the memory; when the developer box is installed in the printer, the electrical contacts of the memory are electrically connected to the electrical contacts of the printer through the conductive elastic member.

[0009] It can be seen that the electrical contacts of the printer and the electrical contacts of the memory are electrically connected through the conductive elastic parts, so that rigid contact between the electrical contacts of the printer and the electrical contacts of the memory is avoided. The structure is extremely simple. Even if the installation accuracy is low, the conductive elastic parts can rely on their elasticity to effectively compensate for the gap and improve the reliability of electrical contact.

[0010] Furthermore, the conductive elastic member is a spring.

[0011] Furthermore, the axis of the spring extends along the length direction or normal direction of the electrical contact of the memory.

[0012] Furthermore, the conductive elastic member is conductive rubber.

[0013] Furthermore, the conductive elastic member is fixed on the electrical contact by soldering.

[0014] Another object of the present invention is to provide a drum cartridge with a simple structure and reliable electrical connection.

[0015] To achieve the above-mentioned purpose, the drum cartridge of the utility model comprises a frame and a photosensitive drum rotatably mounted on the frame, a memory is fixed on the frame, the memory is provided with electrical contacts for communicating with a printer, and a conductive elastic member is fixed on the electrical contacts of the memory; when the drum cartridge is installed in the printer, the electrical contacts of the memory are electrically connected to the electrical contacts of the printer through the conductive elastic member.

[0016] It can be seen that the electrical contacts of the printer and the electrical contacts of the memory are electrically connected through the conductive elastic parts, so that rigid contact between the electrical contacts of the printer and the electrical contacts of the memory is avoided. The structure is extremely simple. Even if the installation accuracy is low, the conductive elastic parts can rely on their elasticity to effectively compensate for the gap and improve the reliability of electrical contact.

[0017] Furthermore, the conductive elastic member is a spring.

[0018] Furthermore, a positioning column is formed on the frame, and one end of the spring is sleeved on the positioning column.

[0019] Furthermore, the axis of the spring extends along the length direction or normal direction of the electrical contact of the memory.

[0020] Furthermore, the conductive elastic member is conductive rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded schematic diagram of the processing box of the utility model.

[0022] Figure 2 It is a three-dimensional diagram of the processing box of the utility model.

[0023] Figure 3 yes Figure 2 A magnified view of .

[0024] Figure 4 yes Figure 3 Schematic diagram of the structural decomposition.

[0025] Figure 5 It is a schematic diagram of another embodiment of the conductive elastic member of the utility model.

[0026] Figure 6 yes Figure 5 Schematic diagram of the structural decomposition. DETAILED DESCRIPTION

[0027] like Figures 1 to 4 As shown, the process cartridge 100 includes a drum cartridge 110 and a developer cartridge 120. The process cartridge 100 can be detachably mounted on a printer (not shown). The developer cartridge 120 can be detachably mounted on the drum cartridge 110.

[0028] The drum cartridge 110 includes a frame 111 and a photosensitive drum 112 rotatably mounted on the frame 111 .

[0029] The memory 10 is fixed on the frame 111 . The memory 10 is provided with electrical contacts 11 for communicating with the printer. A conductive elastic member 12 is fixed on the electrical contacts 11 of the memory 10 .

[0030] When the drum cartridge 110 is loaded into the printer, the electrical contacts 11 of the memory 10 are electrically connected to the electrical contacts of the printer through the conductive elastic member 12 .

[0031] The electrical contacts of the printer and the electrical contacts 11 of the memory 10 are electrically connected through the conductive elastic member 12, thereby avoiding rigid contact between the electrical contacts of the printer and the electrical contacts 11 of the memory 10. The structure is extremely simple. Even if the installation accuracy is low, the conductive elastic member 12 can effectively compensate for the gap by relying on its elasticity, thereby improving the reliability of the electrical contact.

[0032] Preferably, the conductive elastic member 12 is a spring.

[0033] Preferably, the axis 13 of the spring extends along the length direction 01 of the electrical contact 11 of the memory 10 .

[0034] Preferably, the conductive elastic member 12 is fixed to the electrical contact 11 by solder 14. The solder 14 is laid on the electrical contact 11, and the spring as the conductive elastic member 12 is clamped above the solder. The solder is heated by hot air to melt the solder, and the spring can be welded to the electrical contact 11 after the solder cools. The spring can also be heated by an electric soldering iron, and the heat is transferred to the solder through the spring to melt the solder to complete the welding.

[0035] Preferably, a positioning column 113 is formed on the frame 111, and one end of the spring serving as the conductive elastic member 12 is sleeved on the positioning column 113. The positioning column 113 can position the spring serving as the conductive elastic member 12 to prevent deviation and improve assembly and welding efficiency.

[0036] When the electrical contacts on the printer are thin needles, after the drum cartridge 110 is installed in the printer, the thin needles can be inserted into the gap between any two axial turns of the spring of the conductive elastic member 12, and the elastic force of the spring along its own axial deformation is used to clamp the thin needle-shaped electrical contacts of the printer to achieve reliable electrical contact.

[0037] When the electrical contacts on the printer are in the shape of a wide plane, after the drum cartridge 110 is installed in the printer, the electrical contacts on the printer squeeze the spring serving as the conductive elastic member 12, causing the spring to deform radially, that is, flattening the spring radially, thereby achieving reliable electrical contact.

[0038] The axis 13 of the spring is not limited to extending along the length direction 01 of the electrical contact 11, but can also extend along the normal direction 02 of the electrical contact 11. After the drum cartridge 110 is installed in the printer, the spring as the conductive elastic member 12 is compressed along its own axis.

[0039] As another embodiment, the conductive elastic member is a conductive rubber 15. The axis 13 of the conductive rubber 15 extends along the length direction 01 of the electrical contact 11 of the memory 10. The axis of the conductive rubber 15 is not limited to being along the first direction 01. The conductive rubber 15 covers at least a portion of the electrical contact 11. When the drum cartridge 110 is loaded into the printer, the electrical contact 11 of the memory 10 can be electrically connected to the electrical contact of the printer through the conductive elastic member 12. The conductive rubber 15 is fixed to the electrical contact 11 by bonding or secondary injection molding.

[0040] The memory 10 of the present invention is not limited to being installed on the drum box 110 through the card slot 114, and can also be fixed on the drum box by other means such as bonding or riveting.

[0041] The memory 10 is not limited to being fixed on the drum cartridge 110, but can also be fixed on the developer cartridge 120, as long as the electrical contacts 11 of the memory 10 can be electrically connected with the electrical contacts of the printer after the process cartridge 100 is installed in the printer. Similarly, the conductive elastic member 12 is not limited to being set on the drum cartridge 110, but can also be set on the developer cartridge 120.

[0042] Each electrical contact 11 is equipped with a corresponding conductive elastic member 12. The number of electrical contacts 11 is related to the configuration of the printer itself, and can be one, two or more.

[0043] The above is a detailed description of the utility model in combination with specific embodiments, and it cannot be determined that the specific implementation methods of the utility model are limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, making several equivalent substitutions or obvious modifications without departing from the concept of the utility model, and the performance or use are the same, should be regarded as falling within the scope of patent protection determined by the claims submitted for the utility model.

Claims

1. A developing cartridge detachably mounted on a drum cartridge, the drum cartridge comprising a frame and a photosensitive drum rotatably mounted on the frame, characterized in that: A memory is fixed on the developing box, an electrical contact for communicating with the printer is provided on the memory, and a conductive elastic member is fixed on the electrical contact of the memory; When the developing cartridge is installed in the printer, the electrical contacts of the storage are electrically connected to the electrical contacts of the printer through the conductive elastic member.

2. The developing cartridge according to claim 1, characterized in that: The conductive elastic member is a spring.

3. The developing cartridge according to claim 2, characterized in that: The axis of the spring extends in the length direction or normal direction of the electrical contacts of the reservoir.

4. The developing cartridge according to claim 1, wherein: The conductive elastic member is conductive rubber.

5. The developing cartridge according to claim 1, characterized in that: The conductive elastic member is fixed on the electrical contact point by soldering.

6. A drum cartridge comprising a frame and a photosensitive drum rotatably mounted on the frame, characterized in that: A memory is fixed on the frame, an electrical contact for communicating with the printer is provided on the memory, and a conductive elastic member is fixed on the electrical contact of the memory; When the drum cartridge is installed in the printer, the electrical contacts of the memory are electrically connected to the electrical contacts of the printer through the conductive elastic member.

7. The drum cartridge according to claim 6, characterized in that: The conductive elastic member is a spring.

8. The drum cartridge according to claim 7, characterized in that: A positioning column is formed on the frame, and one end of the spring is sleeved on the positioning column.

9. The drum cartridge according to claim 7, characterized in that: The axis of the spring extends in the length direction or normal direction of the electrical contacts of the reservoir.

10. The drum cartridge according to claim 6, characterized in that: The conductive elastic member is conductive rubber.

Images