Asymmetric Protrusion Alignment for Image Forming Agent Storage
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Solution Overview
Problem
Existing image forming agent storage units lack efficient guidance and alignment features, leading to difficulties in correct mounting and potential damage during replacement, and do not effectively prevent accidental removal or misalignment.
Innovation Solution
The image forming agent storage unit incorporates a pair of protrusion portions positioned at specific angles on its body, serving as guides for alignment and mounting, while a movement preventing member ensures secure attachment and easy removal, preventing accidental movement or misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If no protrusion portions are provided on the storage unit, then the structure is simpler, but correct alignment and mounting guidance are insufficient
Solution Approach 1:
The patent applies asymmetry by providing a pair of protrusion portions at specific asymmetric positions (upper right and lower left angle positions) on the storage unit body. This asymmetric arrangement creates unique alignment guidance that prevents incorrect mounting orientations while maintaining structural simplicity. The protrusions fit into corresponding recesses in the mounting location, ensuring correct positioning without complex mechanisms.
2Productivity
If the storage unit can be easily removed, then replacement is faster, but accidental removal may occur
Solution Approach 1:
The asymmetric positioning of the protrusion portions (upper right and lower left) creates a unique engagement configuration that allows intentional removal while preventing accidental disengagement. The movement preventing member works in conjunction with this asymmetric geometry to provide directional control - easy removal in the intended direction but resistance to accidental removal from other directions.
3Area of stationary object
If multiple storage units are arranged compactly, then the apparatus is miniaturized, but alignment and positioning become more difficult
Solution Approach 1:
The asymmetric protrusion arrangement provides unique directional identification for each storage unit position. When multiple storage units are arranged compactly, each unit's asymmetric protrusion pattern serves as a positional signature, enabling operators to quickly identify correct placement locations and orientations without complex alignment procedures. The corresponding recesses in the mounting structure guide the protrusions into proper alignment.
Solution Approach 2:
The protrusion portions and corresponding recesses are pre-configured in specific asymmetric positions before mounting. This preliminary arrangement of alignment features ensures that when storage units are installed, they automatically self-align into the correct positions and orientations, eliminating the need for complex alignment operations during installation or replacement.
Data Source
AI summary
An image forming agent storage unit includes a body portion and a pair of a protrusion portion. The body portion extends in an insertion direction in which the image forming agent storage unit is inserted into an image forming apparatus. The pair of a protrusion portion is disposed on an outer face of the body portion and extends along the insertion direction. An approximate geometrical center of gravity of a cross-sectional shape of the body portion is disposed between the pair of the protrusion portion. One of the protrusion portions is disposed on an upper right angle position between an upper portion of the body portion and a right portion of the body portion and the other of the protrusion portions is disposed on a lower left angle position between a lower portion of the body portion and a left portion of the body portion.