Blank Page Detection and Sheet Discharge Control
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Solution Overview
Problem
Existing printing apparatuses face difficulties in correctly determining blank pages, leading to unintended printing or removal of non-blank pages, making it challenging for users to insert or remove sheets appropriately.
Innovation Solution
A printing apparatus with a reading unit, printing unit, determination unit, control unit, and sheet discharge unit that distinguishes between blank and non-blank pages, allowing for controlled printing and sheet discharge to differentiate between printed sheets, facilitating easy insertion or removal of sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automatic blank page detection is implemented, then printing efficiency is improved by avoiding useless printing, but determination accuracy deteriorates leading to unintended results
Solution Approach 1:
The system provides feedback to the user by displaying information about pages determined to be blank, allowing the user to confirm or correct the determination. This feedback mechanism resolves the contradiction by maintaining automatic detection efficiency while correcting accuracy errors through user interaction.
Solution Approach 2:
The user is empowered to self-correct determination errors by inserting sheets for pages they wish to print despite blank page detection, or removing sheets for pages incorrectly identified as non-blank. This self-service approach maintains high automation while allowing user correction of accuracy issues.
2Device complexity
If sheets are discharged in sequence without distinction, then device complexity is reduced, but ease of operation deteriorates when users need to insert or remove specific sheets
Solution Approach 1:
The discharge order information acts as an intermediary that carries identification data through the printing system. This intermediary enables sheet tracking and identification without adding complex physical mechanisms, maintaining simple discharge hardware while enabling easy sheet management through information-based differentiation.
Data Source
AI summary
A printing apparatus includes a determination unit configured to determine whether a document read by a reading unit is blank. The printing apparatus controls a printing unit to perform print processing based on image data corresponding to a document that has been determined not to be blank by the determination unit, and controls the printing unit not to perform print processing based on image data corresponding to document that has been determined to be blank by the determination unit. The printing apparatus discharges a sheet, on which print processing has been performed based on image data corresponding to a document, subsequent to the document that has been determined to be blank by the determination unit, which has been determined not to be blank by the determination unit, to be distinguishable from a sheet that has already been discharged.