Detachable Reverse Path Unit for Width-Independent Tray Operation
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Solution Overview
Problem
Existing recording apparatuses face challenges in positioning operation units for the reverse path unit due to limitations imposed by the width size of the support tray, leading to difficulties in operation and potential recording failures or malfunctions.
Innovation Solution
A medium conveyance apparatus with a detachable reverse path unit that includes a support tray switchable between drawn and stored states, equipped with operation units that can be operated without being restricted by the width size of the support tray, allowing for easy attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the width size of the support tray is increased to accommodate wider media, then the medium support capability is improved, but the interval between operation units is increased making one-handed operation difficult
Solution Approach 1:
The operation units are repositioned from the horizontal width direction to the vertical depth direction. Instead of spacing operation units apart in the width direction (which increases with support tray width), the design places operation units at different depths along the conveyance direction, allowing consistent spacing regardless of support tray width while maintaining accessibility for one-handed operation.
2Device complexity
If the width size of the support tray is decreased to maintain compact design, then the apparatus size is reduced, but the medium support capability deteriorates causing sagging and recording failures
Solution Approach 1:
The design decouples the relationship between support tray width and operation unit spacing by utilizing the depth dimension. Operation units are positioned at different depths along the conveyance direction rather than being spaced horizontally, allowing the support tray to maintain optimal width for medium support while keeping operation units accessible regardless of tray dimensions.
3Ease of operation
If operation units are positioned at the edges of the support tray to maximize accessibility, then the ease of operation is improved, but the risk of medium sagging at the ends increases
Solution Approach 1:
The operation units are positioned in the depth direction rather than at the horizontal edges of the support tray. This vertical spacing along the conveyance direction allows operation units to be accessible while maintaining horizontal positioning that supports the medium edges, preventing sagging while preserving ease of operation.
Data Source
AI summary
A medium conveyance apparatus includes an apparatus body and a reverse path unit. The reverse path unit includes a reverse roller configured to reverse a medium, and the reverse path unit is configured to be attachable/detachable to/from the apparatus body. The reverse path unit includes a support tray, an operation unit, and an opening portion. The support tray is configured to switch between a drawn state where the support tray is drawn out from the reverse path unit and a stored state where the support tray is stored in the reverse path unit. The support tray is configured to support a medium to be fed in the drawn state. The operation unit is operated to attach/detach the reverse path unit to/from the apparatus body. The opening portion is provided in the support tray and configured to enable operation of the operation unit.