Toner Cartridge Shutter Mechanism for Automatic Outlet Opening
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Solution Overview
Problem
Existing toner cartridges require manual operation of a lever to open and close the toner outlet, which can be inconvenient and may lead to improper handling during attachment and detachment from the image forming apparatus.
Innovation Solution
A toner cartridge design that automatically opens and closes the toner outlet through a shutter mechanism responsive to the user's operation of attaching and detaching the cartridge, eliminating the need for a separate lever operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual lever operation is used to open and close the toner outlet, then the shutter can be controlled, but the operation becomes inconvenient and may lead to improper handling
Solution Approach 1:
The shutter mechanism automatically opens or closes in response to the attachment or detachment of the toner cartridge from the image forming apparatus. The cartridge itself serves as the actuating force, eliminating the need for separate manual lever operations. This self-service approach resolves the contradiction by making the system convenient to operate while avoiding additional control complexity.
Solution Approach 2:
The shutter is pre-configured to respond to the attachment/detachment action. Before the user needs to access toner, the shutter automatically opens when the cartridge is attached. This preliminary action eliminates the need for subsequent manual operations, improving ease of use without adding complex control mechanisms.
2Reliability
If a separate lever operation is required for shutter control, then the outlet can be opened and closed, but it leads to improper handling during attachment and detachment
Solution Approach 1:
The shutter control function is merged with the attachment/detachment operation. The same physical action of attaching or detaching the cartridge simultaneously achieves both the mechanical connection and the shutter state change. This merging ensures reliable toner supply management while maintaining simple, proper handling procedures.
Solution Approach 2:
The system uses the attachment/detachment action itself to control the shutter, rather than requiring a separate control mechanism. This self-service approach ensures that the shutter reliably responds to the correct operational moments (attachment for opening, detachment for closing) without complicating the user's handling procedures.
Data Source
AI summary
A cartridge includes a shutter that opens and closes when the cartridge is attached and detached to a developing unit or image forming apparatus. The cartridge includes a casing having a chamber with a first opening at one end portion allowing toner to flow out of the casing. The cartridge includes a cover that covers the first opening, movable with the casing and having a second opening allowing toner to flow out of the cover. The shutter is located at the one end portion and has a protrusion further from the one end portion than the cover. The developing unit supports the protrusion when the cartridge is mounted thereon, and the casing pivots with the cover relative to the developing unit between a first position where the shutter closes the second opening and a second position where a third opening of the shutter overlaps the second opening.