Double-Sided Printing Page Order Reordering for Defect Diagnosis
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Solution Overview
Problem
In printing apparatuses with double-sided printing modes, the difference in page processing order between alternate and cyclic modes makes it difficult to accurately diagnose image defects due to varying image formation orders, leading to inconsistent periodicity analysis.
Innovation Solution
The printing apparatus includes a reading unit and inspection unit that generate and compare read images to detect defects, determining periodicity based on the operation mode-specific image formation order, ensuring consistency between printing and reading page orders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If double-sided printing is performed in alternate mode or cyclic mode, then printing functionality is improved, but periodicity determination of image defects becomes inaccurate due to different page processing orders
Solution Approach 1:
The system dynamically adjusts the page order based on the detected double-sided printing mode. When alternate mode is detected, pages are reordered to match the actual printing sequence; when cyclic mode is detected, a different reordering is applied. This dynamic adaptation resolves the contradiction by making the inspection system flexible enough to handle different printing modes while maintaining accurate defect periodicity determination.
Solution Approach 2:
The system changes the parameter of page order according to the printing mode. By detecting which double-sided mode is being used and adjusting the page sequence parameter accordingly, the system ensures that defect periodicity analysis is performed on correctly ordered pages, thereby maintaining measurement precision across different printing configurations.
2Measurement precision
If page processing order is adjusted for different double-sided modes, then defect diagnosis accuracy is improved, but system complexity increases due to mode detection and reordering logic
Solution Approach 1:
The system uses feedback from the printing apparatus to detect which double-sided mode is currently active. This feedback mechanism allows the inspection device to automatically adapt its page ordering without manual intervention, improving defect diagnosis accuracy while keeping the complexity management automated rather than requiring complex manual configuration systems.
Solution Approach 2:
The page reordering mechanism serves multiple functions: it handles both alternate and cyclic double-sided modes, maintains compatibility with single-sided printing, and enables accurate defect periodicity analysis across all modes. This multi-functionality reduces the need for separate specialized systems for each printing mode, thereby managing complexity efficiently.
Data Source
AI summary
To make it possible to perform diagnosis of a part fault with accuracy by correctly grasping the periodicity of an image defect in a case of double-sided printing. The periodicity of a defect is determined by performing processing that is in accordance with an operation mode in a case where double-sided printing is performed and which achieves consistency between page order in a case where printing is performed in the printing unit and page order in a case where reading is performed in the reading unit.