Developer Storage Unit Prevents Unintentional Toner Cartridge Reset
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Solution Overview
Problem
Existing developing cartridges face challenges in accurately determining the service life of toner cartridges due to user unintentional resetting of the detection protrusion, leading to inaccurate control of toner deterioration and remaining amount, and difficulties in recycling without removing the gear cover.
Innovation Solution
A developer storage unit with a force transmission mechanism comprising two rotary members and a detected portion that can be moved between new and used product detecting positions, featuring stopper and non-contacting portions to prevent unintentional resetting, allowing for recycling without removing the gear cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the detection protrusion can be easily reset to the initial position, then the workability for recycling is improved, but the detection accuracy deteriorates due to unintentional resetting by users
Solution Approach 1:
The gear mechanism is pre-configured with the detection protrusion positioned away from the detection actuator. During recycling, the gear mechanism automatically resets the detection protrusion to its initial position through predetermined rotational movement, eliminating the need for manual intervention and preventing unintentional resetting by users.
Solution Approach 2:
The gear mechanism acts as an intermediary between the force transmission mechanism and the detection protrusion. It transmits force in a controlled manner to reset the detection protrusion only when intended, while blocking unintentional resetting attempts through its mechanical structure.
2Measurement precision
If the detection protrusion is positioned away from the detection actuator in used cartridges, then accurate used product detection is achieved, but the service life control accuracy deteriorates due to unintentional resetting
Solution Approach 1:
The gear mechanism is designed to prevent unintentional resetting of the detection protrusion before it can affect service life control. The mechanical structure inherently blocks movement that would reset the detection protrusion to the new product position, ensuring accurate service life tracking.
Solution Approach 2:
The detection actuator and sensor provide continuous feedback on the detection protrusion position. When the detection protrusion is in the correct position (either new or used product position), the system receives appropriate feedback signals that ensure accurate service life control.
3Measurement precision
If the gear cover is removed to reset the detection protrusion, then the detection accuracy is maintained, but the device complexity increases and recycling becomes more difficult
Solution Approach 1:
The detection protrusion and gear mechanism are extracted as a functional unit that can be automatically reset without removing the gear cover. The gear mechanism's rotational movement resets the detection protrusion while the gear cover remains in place, simplifying the recycling process.
Solution Approach 2:
The gear mechanism performs self-service by automatically resetting the detection protrusion through its own rotational movement when force is applied. This eliminates the need for external intervention or gear cover removal, making recycling simpler while maintaining detection accuracy.
Data Source
AI summary
A developer storage unit includes first and second rotary members. The first rotary member includes: first contacting portion capable of contacting with the second rotary member, first non-contacting portion not in contact with the second rotary member, and first stopper portion offset from the first contacting portion in an axial direction of the first rotary member. The second rotary member includes: second contacting portion capable of contacting with the first rotary member, second non-contacting portion not in contact with the first rotary member, second stopper portion offset from the second contacting portion in an axial direction of the second rotary member, and detected portion detected by detector. The second stopper portion comes into contact with the first stopper portion when the detected portion is moved from used product detecting position to new product detecting position while the first non-contacting portion is positioned to face the second rotary member.