Pivotable Conveyance Unit for Image Forming Maintenance Access
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Solution Overview
Problem
Existing image forming apparatuses face challenges in maintaining workability and accessibility around the feed unit, particularly during maintenance and replacement tasks, due to the compact design which restricts the space and complicates the positioning of components.
Innovation Solution
The image forming apparatus incorporates a rotatable cover member and a pivotable conveyance unit with a swing guide that changes positions based on the open or closed state, creating a larger distance between the feed unit and the swing guide, thereby increasing the working space and simplifying maintenance access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the apparatus uses a compact design with fixed components, then the structure remains simple and stable, but the working space around the feed unit becomes limited and maintenance access becomes difficult
Solution Approach 1:
The patent applies the dynamics principle by making the conveyance unit pivotable between a closed position (forming part of the sheet conveyance passage) and an open position (远离 the feed unit). This dynamic configuration allows the conveyance unit to adapt its position based on operational needs, providing larger working space during maintenance while maintaining a compact closed structure during operation.
Solution Approach 2:
The patent segments the cover member into two functional parts: a fixed cover body and a pivotable conveyance unit. This segmentation allows the conveyance unit to be independently positioned, enabling maintenance personnel to access the feed unit more easily when the conveyance unit is in the open position, without compromising the overall structural integrity.
2Ease of operation
If the apparatus maintains a fixed compact structure, then manufacturing and assembly are simplified, but accessibility for maintenance and replacement tasks is restricted
Solution Approach 1:
The pivotable conveyance unit provides dynamic accessibility, allowing maintenance personnel to easily access the feed unit by opening the conveyance unit. This dynamic feature improves ease of operation for maintenance tasks while adding only a single pivotable joint to the structural configuration, which remains relatively simple to manufacture.
Solution Approach 2:
The swing guide acts as an intermediary mechanism that facilitates the pivoting motion of the conveyance unit. It provides a simple mechanical interface that enables easy opening and closing movements, improving maintenance accessibility without requiring complex actuation systems or control mechanisms.
3Ease of operation
If the conveyance unit is fixed in position, then the structural configuration remains simple, but the distance between the feed unit and swing guide is insufficient, reducing workability
Solution Approach 1:
The conveyance unit pivots about a pivot point to dynamically adjust the distance between the feed unit and swing guide. When opened, it creates sufficient working space for maintenance operations. The pivot mechanism itself remains simple, requiring only a fixed pivot point and swing guide, avoiding complex positioning systems.
Data Source
AI summary
An image forming apparatus has an apparatus main body, a sheet conveyance passage, a cover member, a conveyance unit, a sheet tray, a first sheet feeding portion, and a feed unit. The sheet conveyance passage is inside the apparatus main body. The conveyance unit is inside the cover member and is supported to be pivotable between an open position and a closed position. The first sheet feeding portion has a feed unit. The conveyance unit has a swing guide of which a lower end part is swingably supported on the apparatus main body and which, in the closed position, is located in a first position to face the feed unit and constitute part of the sheet conveyance passage and, in the open position, is located in a second position to be located away from the feed unit.