Drum Cartridge Memory Relay Using a Shared Body Terminal
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Solution Overview
Problem
Image forming apparatuses with both toner and drum memories require multiple terminals for electrical connections, increasing complexity and cost.
Innovation Solution
A drum cartridge design that integrates a frame with a toner cartridge holder, photosensitive drum, and a drum memory, using a single body terminal to relay information between the toner and drum memories, reducing the number of terminals needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If separate terminals are provided for both toner memory and drum memory, then information exchange capability is improved, but device complexity and terminal quantity increase
Solution Approach 1:
The patent merges the terminal structures by making the drum cartridge terminal serve dual purposes: it communicates with the drum memory while also providing electrical connection to the toner cartridge and its memory. This consolidation reduces the total number of terminals required in the image forming apparatus while maintaining full information exchange capability between all memory components.
Solution Approach 2:
The drum cartridge terminal is designed with multi-functionality, serving as both a drum memory communication interface and a toner cartridge power/data connection point. This universal terminal design eliminates the need for separate dedicated terminals for each memory type, thereby reducing overall device complexity without sacrificing information exchange capabilities.
2Reliability
If multiple terminals are provided for toner and drum memories, then communication reliability is improved, but manufacturing cost increases
Solution Approach 1:
By combining multiple terminal functions into a single integrated drum cartridge terminal structure, the patent reduces the total component count required for assembly. This merging approach lowers manufacturing costs through reduced parts inventory, simplified assembly procedures, and decreased assembly time, while the integrated design maintains reliable communication pathways for all memory interactions.
Data Source
AI summary
A drum cartridge includes a frame on which a toner cartridge is attachable, a photosensitive drum, and a drum memory. The drum cartridge relays information stored in the toner memory to the image forming apparatus when the toner cartridge is attached to the frame.