Document Reading Apparatus Mixed Size Placement Guidance
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Solution Overview
Problem
In document reading apparatuses operating in mixed document reading mode, smaller documents may fail to reach the conveyance roller due to improper placement, leading to non-conveyance issues when placed against guide portions, especially in cases where documents of different sizes are mixed on the document tray.
Innovation Solution
The apparatus includes a display unit that prompts users to place multiple documents at the center of the document tray in the direction perpendicular to the conveyance direction, ensuring that all documents, regardless of size, can be conveyed by adjusting the placement guidance and using a sheet feeding roller positioned centrally to apply pressure and rotate documents for effective conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the width between guide portions is adjusted based on the largest document, then the largest document can be properly placed, but smaller documents may abut against the guide portions and fail to reach the conveyance roller
Solution Approach 1:
The system performs preliminary detection of document placement position and provides prompts to guide users on correct placement before conveyance occurs. This preliminary guidance prevents the harmful effect of documents abutting guide portions and failing to reach the conveyance roller.
Solution Approach 2:
The system provides visual feedback through prompts displayed on the display unit, indicating the correct placement position for documents. This feedback mechanism helps users adjust document placement to avoid abutting guide portions, ensuring reliable conveyance for all document sizes.
2Ease of operation
If guide portions are positioned to accommodate the largest document, then document placement flexibility is improved, but smaller documents may be blocked from reaching the conveyance roller
Solution Approach 1:
The system provides preliminary guidance prompts before document conveyance, informing users of the correct placement position. This prevents placement errors that would cause smaller documents to be blocked, ensuring all documents are processed efficiently without requiring guide portion adjustment.
Solution Approach 2:
Visual prompts provide real-time feedback to users about proper document placement. This feedback ensures documents are positioned correctly to reach the conveyance roller, maintaining high processing efficiency while preserving placement flexibility for different document sizes.
Data Source
AI summary
A document reading apparatus having a display unit and a placement section on which plural documents is to be placed includes a conveyance unit and a reading unit. The conveyance unit conveys a document placed on the placement section. The reading unit reads a document conveyed by the conveyance unit and generates image data. Based on at least a reading mode being set on the document reading apparatus of reading a plurality of documents of a plurality of different sizes in a single job by the reading unit, first prompting information that prompts placement of the plurality of documents at a center of the placement section in a direction perpendicular to a document conveyance direction in which the conveyance unit conveys the plurality of documents is displayed on the display unit.