Developing Cartridge Lifting Element Electrical Contact
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Solution Overview
Problem
Existing image forming devices require a slide rail on developing cartridges to ensure stable electrical contact between the chip's electrical contact surface and the identification contact, which complicates the design and assembly.
Innovation Solution
A developing cartridge with a lifting element integrated into the cartridge body, allowing the electrical contact surface to move upward relative to the drum cartridge and identification contact, ensuring stable electrical connection during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a slide rail is provided on the developing cartridge to enable the chip holder to slide relative to the cartridge body, then the electrical contact surface can come into contact with the identification contact, but the device complexity increases
Solution Approach 1:
The patent extracts the sliding function from the developing cartridge body by providing the slide rail on the image forming device instead. The chip holder is directly movable relative to the image forming device along the slide rail, eliminating the need for a sliding mechanism on the cartridge itself. This reduces the developing cartridge structure while maintaining the required electrical contact functionality.
Solution Approach 2:
The slide rail acts as an intermediary component between the developing cartridge and the image forming device. It provides the necessary guidance and support for the chip holder's movement without being part of the cartridge structure. This intermediary approach allows the cartridge to maintain a simpler design while still achieving reliable electrical contact through the mediated movement mechanism.
2Reliability
If the identification contact is disposed in a recess in the image forming device, then the electrical contact surface remains stable during contact, but it is necessary to provide a slide rail on the developing cartridge which complicates the design
Solution Approach 1:
The patent extracts the sliding mechanism from the developing cartridge and relocates it to the image forming device. The slide rail is provided on the image forming device to guide the chip holder's movement, eliminating the need for complex assembly structures on the cartridge. This simplifies cartridge manufacturing while maintaining stable electrical contact through the recess structure.
3Ease of operation
If the chip holder slides relative to the cartridge body, then the chip can enter the recess where the identification contact is positioned, but the developing cartridge structure becomes more complex
Solution Approach 1:
The patent removes the sliding mechanism from the developing cartridge structure and places it on the image forming device. The chip holder is made directly movable relative to the image forming device along the slide rail, eliminating the need for a sliding chip holder within the cartridge. This extraction simplifies the cartridge structure while maintaining smooth installation operation.
Data Source
AI summary
A developing cartridge includes: a cartridge body for accommodating developers; a driving part at a first end in a first direction; a developing roller rotatable about a rotation axis extending along the first direction and positioned at a third end in a second direction; a storage medium for storing information; an electrical contact surface electrically connected to the storage medium and fixed relative to the cartridge body, and a lifting element configured to lift up the cartridge body in the third direction. The electrical contact surface is positioned at the first end in the first direction and is farther away from the developing roller relative to the driving part. The lifting element is farther away from the developing roller in the second direction away from the driving part.