Document Reading Placement Structure for Gap-Free Image Capture
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Solution Overview
Problem
Existing document reading devices suffer from low precision in reading documents due to gaps between members within the capturing range of the image capturing member and outside the placed document, leading to inaccuracies in image capture.
Innovation Solution
The document reading device includes a placement portion with a boundary line covered by the document, featuring a boundary line between multiple surfaces, ensuring precise image capture by the image capturing member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If members are arranged to form gaps between them within the capturing range, then the device complexity is reduced and ease of manufacture is improved, but the measurement precision of document reading deteriorates due to gap lines appearing in the captured image
Solution Approach 1:
A light-shielding member is introduced as an intermediary element between the existing structural members. This light-shielding member specifically blocks the gap lines from entering the capturing range of the image capturing member, thereby eliminating the harmful visual artifacts without requiring changes to the underlying structural arrangement or manufacturing process
Solution Approach 2:
The harmful gap lines are selectively removed from the capturing range by positioning light-shielding members to block only the gap regions. The actual document reading function remains intact while the unwanted gap line artifacts are extracted or removed from the visual field
Data Source
AI summary
A document reading device includes: an image capturing member that captures an image of a document; a placement portion that is disposed below the image capturing member and that has a boundary line between multiple surfaces at a position at which the boundary line is covered by the document when the document has a maximum size that the image capturing member is capable of imaging and the document is placed on the placement portion; and a document reading member that reads the document that is placed on the placement portion.