Developing Cartridge IC Chip Holder for Low-Friction Electrical Contact
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Solution Overview
Problem
Friction occurs between the electric contact surface of the developing cartridge and the electric connector of the image forming apparatus due to changes in the position of the electric contact surface relative to the electric connector during the movement of the developing cartridge for changing the separate state.
Innovation Solution
The developing cartridge is designed with an IC chip assembly that includes a holder with movable bosses and a coil spring to allow the IC chip to move relative to the casing, reducing friction by maintaining consistent contact with the electric connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the developing cartridge is moved away from the photosensitive drum to change the separate state, then the developing cartridge can be detached and reattached, but friction occurs between the electric contact surface and the electric connector
Solution Approach 1:
A holder is introduced as an intermediary component between the IC chip assembly and the developing cartridge body. The holder includes a through-hole that guides and constrains the movement of the IC chip assembly, ensuring that the electric contact surface maintains proper alignment with the electric connector during attachment and detachment operations, thereby reducing friction and wear.
Solution Approach 2:
The IC chip assembly is designed to be movable relative to the developing cartridge body through the holder mechanism. This dynamic design allows the IC chip assembly to adjust its position automatically during attachment and detachment, maintaining optimal contact with the electric connector while minimizing friction through controlled movement.
2Adaptability or versatility
If the position of the electric contact surface changes relative to the electric connector during movement, then the developing cartridge can change states, but friction increases and connection reliability decreases
Solution Approach 1:
The holder acts as a mediator that maintains a stable spatial relationship between the IC chip assembly and the developing cartridge body. The through-hole in the holder provides a guided path that ensures the electric contact surface remains properly aligned with the electric connector during state changes, preventing position variations that would cause friction and connection failures.
Solution Approach 2:
The holder is pre-configured with a through-hole that is positioned to guide the IC chip assembly before contact is made. This preliminary positioning ensures that when the developing cartridge changes states, the electric contact surface is already aligned with the electric connector, preventing friction and maintaining connection reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design minimizes friction and ensures reliable electrical connection between the IC chip and the connector, improving the durability and functionality of the developing cartridge.
Implementation Method 1
a holder (62) holding the IC chip (61)... allowing the IC chip (61) to move relative to the casing (10)
Data Source
AI summary
A developing cartridge may include: a casing for accommodating developer therein; a developing roller rotatable about an axis extending in a first direction and positioned at one side of the casing in a second direction; a storage medium having an electric contact surface; and a holder movable relative to the casing in the second direction with the electric contact surface between a first position and a second position, the holder having an outer surface at which the electric contact surface is positioned.