Conductive Member for Developing Unit Electrical Contact
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Solution Overview
Problem
The existing image forming apparatuses face challenges in minimizing the number of components required for electrical contact between the developing unit and the main body, particularly when using a tray method, which can lead to contact defects and potential damage during the insertion or withdrawal of the developing unit.
Innovation Solution
The solution involves a single conductive member connected to the power supply unit in the main body that directly contacts the electrical contact portion of the developing unit, with a tray design that includes guides and a shutter unit to ensure stable and damage-free electrical connection, minimizing the risk of contact defects during the mounting and removal of the developing unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tray is used to facilitate developing unit replacement, then ease of operation is improved, but device complexity increases due to additional components needed for electrical contact
Solution Approach 1:
The patent combines multiple functions into a single conductive member that serves both as a power supply connection and as a structural component of the tray. This merging eliminates the need for separate electrical contact components, thereby reducing device complexity while maintaining ease of operation for developing unit replacement.
Solution Approach 2:
The conductive member is designed to perform multiple functions: it provides electrical power to the developing unit, acts as a structural support for the tray, and enables easy insertion and withdrawal of the developing unit. This multi-functionality reduces the overall number of components needed in the system.
2Reliability
If multiple components are used for electrical contact between power supply unit and developing unit, then reliability of electrical connection is improved, but device complexity increases
Solution Approach 1:
Multiple electrical contact functions are merged into a single conductive member that maintains reliable electrical connection between the power supply unit and the developing unit. The conductive member is designed with sufficient conductivity and structural integrity to reliably power the developing unit without requiring multiple separate contact components.
3Productivity
If developing unit directly contacts transfer unit, then productivity is improved, but risk of damage increases during developing unit removal
Solution Approach 1:
The conductive member is designed to break contact with the developing unit before the developing unit fully separates from the transfer unit during removal. This preliminary action prevents damage to the transfer unit by ensuring the developing unit is electrically disconnected before physical separation occurs, allowing continuous operation without damage risks.
Data Source
AI summary
An image forming apparatus and method are provided. The apparatus includes a main body, a developing unit for forming an visible image, a transfer unit for transferring the visible image formed by the developing unit onto a recording medium, the transfer unit being disposed in the main body, a tray loaded with the developing unit and installed to be inserted or withdrawn into or from the main body, a power supply unit for supplying a power supply to the developing unit, the power supply unit being disposed in the main body, and a conductive member that is connected to the power supply unit, intersects an insertion or withdrawal direction of the tray, and directly contacts an electrical contact portion of the developing unit.