Process Cartridge Remanufacturing via Segmented Drum and Developer Frames
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Solution Overview
Problem
Conventional process cartridge remanufacturing methods are complex and inefficient, particularly in refilling developers, making them difficult for users to reuse cartridges depleted of developer storage.
Innovation Solution
A method involving the disassembly and reassembly of the process cartridge's drum and development units, where the supporting member is removed to separate the units, allowing for the replacement of the photosensitive drum and refilling of the developer storage, with the units then reconnected for oscillatory movement, simplifying the process and reducing the need for specialized tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional process cartridge remanufacturing method is used (cutting joint portions and re-bonding frames with spacers), then the process cartridge can be remanufactured, but the remanufacturing process becomes complex and time-consuming
Solution Approach 1:
The process cartridge is divided into separable components: the drum frame with photosensitive drum, and the developing device frame with developer storage portion. The supporting member acts as a detachable connector that allows these segments to be separated for independent maintenance and refilling, then reconnected without complex bonding operations.
Solution Approach 2:
The supporting member is extracted as a separate, removable component from the process cartridge assembly. This extraction allows the drum frame and developing device frame to be completely separated, enabling simple refilling of the developer storage portion without requiring cutting or bonding operations on the frames themselves.
2Reliability
If the conventional process cartridge remanufacturing method is used (cutting joint portions and re-bonding frames), then the frames can be re-bonded together, but the process requires specialized tools and technical expertise
Solution Approach 1:
The supporting member is designed to be easily detachable and reattachable by the user without requiring specialized tools or technical expertise. The rotationally movable connection allows users to perform maintenance and refilling operations themselves, eliminating the need for service personnel and complex bonding operations.
3Reliability
If the conventional process cartridge remanufacturing method is used, then the process cartridge can be remanufactured, but the refilling of developer becomes more difficult and time-consuming
Solution Approach 1:
The process cartridge is segmented into the drum frame and developing device frame that can be completely separated. This segmentation allows the developer storage portion to be accessed and refilled independently without requiring disassembly of the entire cartridge or complex bonding operations, significantly reducing refilling time.
Solution Approach 2:
The developing device frame containing the developer storage portion is extracted as a separable unit by removing the supporting member. This extraction provides direct access to the developer storage portion for easy refilling, eliminating the time-consuming bonding and disassembly operations required by conventional methods.
Data Source
AI summary
A remanufacturing method includes dismounting, from one end of a drum frame, a supporting member while rotatably supporting one end of a drum and a developing device frame; separating the two frames; dismounting the drum; mounting one end of a fresh drum to the other end of the drum frame; a refilling developer into a developer accommodating portion of the separated developing device frame; and swingably connecting the developing device frame and the drum frame by mounting the supporting member to one end of the drum frame, while rotatably supporting, by the supporting member, the one end of the drum of the drum frame to which the fresh drum has been mounted and swingably supporting the one end of the developing device frame to the developer accommodating portion of which the developer has been refilled, by the drum frame.