Developing Cartridge Electrode Following Axial Shaft Movement
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Solution Overview
Problem
The electrical connection between the collar member and the developing-roller shaft in existing developing cartridges is unreliable due to reduced ability of the collar member to follow the developing-roller shaft, leading to less reliable electrical connections.
Innovation Solution
A developing cartridge design featuring a casing with a rotating member and an electrode member that moves in an orthogonal direction to accommodate axial movement, ensuring reliable electrical connection through the electrode member's ability to follow the rotational shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the collar member is fixed in position by fitting in a roller-shaft receiving part, then the electrical connection between the developing-roller contact and the collar member is ensured, but the ability of the collar member to follow the developing-roller shaft is reduced
Solution Approach 1:
The collar member is designed to move axially relative to the developing-roller shaft, transitioning from a fixed position to a dynamic position that allows it to follow the shaft's movement while maintaining electrical connection through the developing-roller contact
Solution Approach 2:
The developing-roller contact acts as an intermediary element that maintains electrical connection between the collar member and the developing-roller shaft, allowing the collar member to move independently while ensuring continuous electrical contact
2Stability of the object's composition
If the collar member is fixed in position, then the electrical connection is stable, but the electrical connection reliability deteriorates when the developing-roller shaft moves
Solution Approach 1:
The collar member transitions from a static fixed position to a dynamic configuration where it can move axially to follow the developing-roller shaft, maintaining both stability and reliability of the electrical connection
Data Source
AI summary
A developing cartridge includes a casing, a rotating member, and an electrode member. The casing may be configured to accommodate therein developer. The rotating member has a rotational shaft extending in an axial direction. The rotating member is configured to rotate about the rotational shaft and carries the developer thereon. The electrode member is configured to be electrically connected to the rotating member. The electrode member covers at least part of the rotational shaft from an orthogonal direction orthogonal to the axial direction and is arranged to confront the casing in the axial direction. The electrode member is configured to move in the orthogonal direction in accordance with a movement in the axial direction.