Recovery Container Removal Path Overlap With Access Door
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Solution Overview
Problem
Conventional image forming apparatuses face challenges in designing a recovery container that is large enough to reduce replacement frequency while maintaining a compact casing size, as a tall recovery container requires more space for removal, limiting interior design and preventing proper positioning of other components like exposing and fixing devices.
Innovation Solution
The image forming apparatus features a movable recovery container that overlaps with the access door's movement path, allowing it to be removed without increasing the apparatus size, using a slide rail and angled surfaces to prevent interference and enhance operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the recovery container is made tall to increase capacity, then the container capacity is improved, but the casing size must be enlarged to accommodate the container removal space
Solution Approach 1:
The patent changes the removal direction of the recovery container from the front (horizontal direction) to the rear (vertical direction). This dimensional change allows the container to be tall without increasing the casing footprint, as the removal path uses the vertical space above the container rather than horizontal space in front of it.
Solution Approach 2:
The patent introduces a movable access door that can open and close dynamically. When the door is closed, it blocks the front removal path, forcing the container to be removed through the rear path. When the door is open, it allows front removal if needed. This dynamic mechanism enables flexible removal options without permanently altering the casing structure.
2Productivity
If the recovery container is made large to reduce replacement frequency, then the productivity is improved, but the interior design latitude of the casing is reduced
Solution Approach 1:
By changing the removal direction to vertical (rearward) instead of horizontal (forward), the patent allows the container to occupy more vertical space within the existing casing footprint. This enables larger container capacity without reducing the horizontal space available for other components, thus maintaining interior design flexibility.
Solution Approach 2:
The access door is nested within the casing structure, opening into the space above the recovery container. This nesting allows the door mechanism to be integrated without adding external dimensions, preserving the casing's compact form while enabling large container capacity internally.
3Quantity of substance
If the recovery container is made tall to increase capacity, then the container capacity is improved, but the positioning of exposing device and fixing device becomes impossible
Solution Approach 1:
The patent relocates the container removal path to the vertical dimension (rearward direction) rather than the horizontal dimension (frontward direction). This allows exposing and fixing devices to be positioned in the horizontal front area without interfering with container removal, as the container is removed through the rear vertical path instead.
Solution Approach 2:
The patent segments the removal path from the component positioning area by introducing the access door as a separate mechanism. The door creates a distinct access route (when open) that separates the container removal function from the exposing and fixing device positioning, allowing both to coexist without interference.
Data Source
AI summary
An image forming apparatus includes a collection container for collecting toner discharged from an image forming station, the collection container being movable between a mount position in which the collection container is mounted in the apparatus and a removable position in which the collection container is removable from the apparatus; and a door provided on the apparatus to permit access into the apparatus. A track of the collection container when the collection container is moved from the mount position to the removable position overlaps a track of the door when the door is opened and closed, and when the door is in its open position, the collection container is incapable of being removed from the main assembly, and when the door is in its closed position, the collection container is removable from the main assembly.