Developer Container Dual Shutter Leakage Prevention
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Solution Overview
Problem
Conventional developer containers with double-shutter structures face issues with accidental opening and leakage when demounted from image forming apparatuses, leading to developer spillage and contamination.
Innovation Solution
A developer container design featuring a first and second shutter, each with a lever, where the shutters move from a closed to an open position by being urged and moved in mutually spacing directions, reducing the likelihood of simultaneous opening and leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a double-shutter structure is used to prevent developer leakage, then the reliability of developer containment is improved, but the ease of operation deteriorates because users can accidentally open both shutters when accessing the device
Solution Approach 1:
The shutter system is divided into a first shutter and a second shutter that operate independently. The first shutter is controlled by a first lever and the second shutter by a second lever, allowing separate control of each shutter to prevent accidental simultaneous opening while maintaining reliable containment
Solution Approach 2:
The shutters are designed to be movable between closed and open positions through lever actuation. The dynamic control mechanism allows the shutters to be opened intentionally when needed while remaining closed to prevent leakage, balancing reliability and ease of operation
2Ease of operation
If the two shutters are moved in mutually approaching directions to open, then the ease of operation is improved, but the reliability deteriorates because the shutters can be easily opened accidentally
Solution Approach 1:
The first and second shutters are designed with asymmetric control mechanisms where the first lever and second lever operate in mutually spacing directions rather than approaching directions. This asymmetric design makes accidental simultaneous opening difficult while still allowing intentional opening when needed
3Device complexity
If a single shutter is used for simplicity, then the device complexity is reduced, but the reliability of developer containment deteriorates due to increased leakage risk
Solution Approach 1:
Instead of using a single shutter, the system employs a segmented approach with two independent shutters (first shutter and second shutter) controlled by separate levers. This segmentation provides redundant protection against leakage while maintaining manageable device complexity through modular design
Data Source
AI summary
A developer container includes: an accommodating frame, provided with an opening through which a developer is passable, for accommodating the developer; a first shutter and a second shutter which are movable between an open position where the opening opens and a closed position where the opening is closed; a first lever, provided on the first shutter, for moving the first shutter by being urged and moved; and a second lever, provided on the second shutter, for moving the second shutter by being urged and moved. Each of the first shutter and the second shutter is moved from the closed position to the open position by moving the first shutter and the second shutter in mutually spacing direction to open the opening.