Developing Cartridge Controller Communication Check During Separation
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Solution Overview
Problem
The existing image forming apparatuses face issues with the electrical contact surface of the IC chip unintentionally separating from the electrical connector during the separation process, especially when the movement of the holder relative to the casing is not normal or the separation mechanism does not operate correctly.
Innovation Solution
An image forming apparatus is designed with a controller that controls a separation mechanism to move the casing relative to the main frame, determining if communication with the storage medium is established, and outputs an error if communication is not established, ensuring the electrical contact surface remains connected during separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holder is made movable relative to the casing to maintain electrical contact during separation, then the electrical connection reliability is improved, but the device complexity increases
Solution Approach 1:
The holder is designed to be movable relative to the casing along the separation direction, allowing it to dynamically adjust its position to maintain electrical contact between the IC chip and connector during the separation process. This dynamic mechanism ensures continuous electrical connection while managing the complexity through controlled movement rather than rigid fixed structures.
2Manufacturing precision
If the electrical contact surface is fixed relative to the holder, then the manufacturing precision is improved, but the reliability deteriorates during separation process
Solution Approach 1:
The holder is designed to be movable relative to the casing along the separation direction, allowing it to dynamically adjust its position to maintain electrical contact between the IC chip and connector during the separation process. This dynamic mechanism ensures continuous electrical connection while managing the complexity through controlled movement rather than rigid fixed structures.
3Productivity
If the separation mechanism operates without communication check, then the productivity is improved, but the reliability deteriorates due to potential connection failures
Solution Approach 1:
The controller communicates with the IC chip via the electrical connector to check whether communication is established during the separation process. This feedback mechanism allows the system to verify connection status before proceeding, preventing errors while maintaining efficient operation through automated verification.
Data Source
AI summary
An image forming apparatus includes: a main frame; a developing cartridge including a casing, a storage medium having an electrical contact surface, and developing roller; a photosensitive drum contactable with the developing roller; an electrical connector contactable with the electrical contact surface; a separation mechanism; and a controller configured to communicate with the storage medium via the electrical connector. The separation mechanism is configured to move the casing relative to the main frame in a separating direction in which the developing roller separates from the photosensitive drum. The controller is configured to perform: moving, by controlling the separation mechanism, the casing relative to the main frame in the separating direction; determining, in response to performing the moving, whether communication with the storage medium is established; and outputting, when determining in the determining that the communication with the storage medium is not established, an error.