Rotating Toner Cartridge Cap Design for Leakage Prevention
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Solution Overview
Problem
Existing toner cartridges face challenges in easily removable caps for toner supply openings, leading to potential toner leakage and contamination issues during handling and recycling.
Innovation Solution
A cap design for toner supply openings that includes a resin cap with a sealing portion, contact portion, shaft portion, fit-in portion, cam portion, and handle portion, allowing for easy removal and reattachment while preventing toner leakage and contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cap is used to seal the toner supply opening, then toner leakage and contamination are prevented, but the cap becomes difficult to remove and reattach
Solution Approach 1:
The cap is divided into multiple functional segments: a sealing portion for sealing the opening, a shaft portion for rotational movement, and a handle portion for operation. This segmentation allows the cap to provide reliable sealing while enabling easy removal and reattachment through rotational motion.
Solution Approach 2:
The cap incorporates a shaft portion that enables rotational movement between a sealed position (where the sealing portion contacts the opening) and a removed position. This dynamic design allows the cap to transition between providing strong sealing and being easily removed, resolving the contradiction between reliability and ease of operation.
2Reliability
If the cap is securely attached to prevent toner leakage, then sealing performance is improved, but the cap cannot be easily removed for recycling
Solution Approach 1:
The rotational mechanism allows the cap to be securely attached during normal operation to contain toner, yet easily removed when needed for recycling. The shaft portion enables controlled rotation for removal without requiring forceful detachment, facilitating the recycling process while maintaining toner containment during use.
Solution Approach 2:
The cap's rotational design allows users to easily remove and reattach the cap themselves during recycling operations, without requiring specialized tools or complex procedures. This self-service capability simplifies the recycling process while maintaining effective sealing during normal operation.
3Ease of manufacture
If a simple cap design is used, then ease of manufacture is improved, but toner leakage cannot be effectively prevented
Solution Approach 1:
The cap is segmented into distinct functional portions: a sealing portion with sealing ribs for effective sealing, a shaft portion for rotation, and a handle portion for operation. This segmentation allows each component to be optimized for its specific function while maintaining overall manufacturing simplicity.
Solution Approach 2:
The sealing portion incorporates sealing ribs that provide enhanced sealing effectiveness at the critical interface with the toner supply opening. This localized enhancement of sealing quality ensures reliable toner containment without requiring complex structures throughout the entire cap, maintaining ease of manufacture while improving sealing effectiveness.
Data Source
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AI summary
Aspects described herein relate to a cap for a toner cartridge. In one example, the cap may be configured to close a toner supply opening of the toner cartridge. According to one or more aspects, the cap may include a sealing or covering portion configured to cover the toner supply opening and a shaft portion for rotatably supporting a to-be-detected rotary member. The to-be-detected rotary member 56 is rotatably supported around and fitted onto the shaft portion. Therefore, even if a toner supply opening of a cartridge is provided in a sidewall of the housing on a side where the to-be-detected rotary member is provided, e.g., a left sidewall, the toner supply opening and the to-be-detected rotary member can be provided in such a manner as to overlap each other.