Developer Unit Remanufacturing via Segmented Communication Holes
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Solution Overview
Problem
Existing remanufacturing methods for developer accommodating units in image forming apparatuses are inefficient and complex, particularly in refilling toner into flexible containers, due to the need for disassembling components and limited access through small openings, which can lead to toner leakage and prolonged refilling times.
Innovation Solution
A remanufacturing method that involves processing communication holes on the frame member and flexible container to allow for the insertion of a funnel for efficient toner refilling, using a combination of first and second communication holes to increase access and capacity, and sealing members to prevent leakage, without the need for full disassembly of the cartridge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the developing roller and developing blade are removed to refill toner, then access to the flexible container is improved, but the disassembly process becomes complex and time-consuming
Solution Approach 1:
The patent divides the refilling operation into two separate access points: a first communication hole in the frame member and a second communication hole in the flexible container. This segmentation allows the funnel to be inserted through the frame member while toner is supplied through the flexible container, enabling refilling without removing the developing roller and blade.
Solution Approach 2:
The patent introduces a funnel as an intermediary tool that bridges the first communication hole (in the frame member) and the second communication hole (in the flexible container). The funnel serves as a mediator to channel toner from the supply source through the frame member opening into the flexible container, eliminating the need for direct access to the container interior.
2Productivity
If a single opening is used for refilling, then the structure is simple, but toner leakage occurs and refilling efficiency is reduced
Solution Approach 1:
The refilling system is segmented into two distinct communication holes with separate functions: the first communication hole in the frame member for structural access and funnel insertion, and the second communication hole in the flexible container for toner supply. This functional segmentation improves refilling efficiency while preventing leakage through proper sealing at each interface.
Solution Approach 2:
Each communication hole is designed with specific local characteristics: the first communication hole in the frame member provides structural support and alignment, while the second communication hole in the flexible container is positioned and sized for optimal toner flow. The funnel is locally adapted to interface with both holes, creating sealed connections at each location to prevent leakage.
3Quantity of substance
If the flexible container capacity is increased, then more toner can be stored, but the container becomes harder to handle and refill
Solution Approach 1:
The funnel acts as an intermediary that makes refilling large-capacity flexible containers easy by providing a guided pathway for toner. The funnel interfaces with the second communication hole in the flexible container, allowing toner to be supplied efficiently even when the container has expanded capacity and may be difficult to access directly.
Solution Approach 2:
The patent changes the refilling approach from direct interior access to an external interface approach. By positioning communication holes on the exterior surfaces of the frame member and flexible container, the system enables refilling operations to be performed from outside the cartridge, making large-capacity containers as easy to refill as smaller ones.
Data Source
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AI summary
A remanufacturing method of a developer accommodating unit (9) which includes a flexible container (251) provided with an opening (251h) to accommodate developer, and a frame member (29) configured to accommodate the flexible container. The remanufacturing method includes a step of refilling the developer into the flexible container by inserting a funnel (201) into the flexible container (251) whether via said opening (251h) or via additional communication holes (101, 102) of larger dameter in, respectively, said frame and fexible container.