Rotatable Guide Member Aperture Dust Protection
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Solution Overview
Problem
Existing recording apparatuses face the challenge of dust entering the reading unit, which can affect reading accuracy, and existing solutions to prevent dust entry, such as using a cover, result in increased component complexity.
Innovation Solution
A guide member that is rotatable relative to the housing, switching between a position that exposes the aperture for guiding the original sheet and a position that covers the aperture to prevent dust entry, thereby guiding the sheet and blocking dust without adding extra components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a cover is provided to prevent dust entry, then dust protection is improved, but device complexity increases
Solution Approach 1:
The patent merges the cover function with the guide member by making the guide member rotatable to serve as both a guide and a cover. When rotated to the covering position, the guide member blocks the aperture and prevents dust entry without requiring a separate cover component.
Solution Approach 2:
The guide member is designed with multi-functionality: it can be positioned to guide the original sheet through the aperture, or rotated to cover the aperture and prevent dust entry. This single component performs both guiding and protective functions.
2Ease of operation
If the aperture is exposed for sheet guidance, then ease of operation is improved, but dust protection deteriorates
Solution Approach 1:
The guide member is designed to be rotatable, allowing dynamic switching between two positions: an exposed position for easy sheet insertion and guidance, and a covering position for dust protection. This dynamic adjustment resolves the contradiction between accessibility and protection.
Data Source
AI summary
A recording apparatus includes: a recording section that performs a recording operation on a medium; a housing that contains the recording section; a storage section that stores the medium; and a reading unit disposed in an upper portion of the housing. The reading unit includes: a reading section that reads an original sheet; a guide member that guides the original sheet; and an aperture through which the original sheet that has been read by the reading section passes. By being rotated relative to the housing, the guide member is switched between a first position in which the aperture is exposed and the original sheet is to be guided and a second position in which the aperture is covered.