Printing Control Method for Identifying Defective Images on Unique Portions
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Solution Overview
Problem
Existing printing technologies face challenges in accurately identifying and avoiding the printing of images on unique portions of continuous sheets, such as stains or splice areas, which can lead to unwanted printed defects, especially when dealing with large images where detection and avoidance are cumbersome.
Innovation Solution
A control method and apparatus that detect unique portions on continuous sheets, set a disabled printing area, and apply an identification mark to images that overlap with this area, allowing for easy identification of defective prints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a detection section detects a splice portion on a sheet to determine a print disabled area, then unique portions can be avoided for printing, but large images may unavoidably overlap with the print disabled area making defective image identification cumbersome
Solution Approach 1:
The patent applies identification marks to the continuous sheet at positions corresponding to print disabled areas before printing occurs. This preliminary marking enables automatic detection of defective images by the control unit, eliminating the need for manual identification and resolving the contradiction between avoiding unique portions and easily identifying defective images.
2Productivity
If printing continues without stopping when a unique portion is detected, then productivity is maintained, but images may be printed on defective areas
Solution Approach 1:
The control unit预先 sets print disabled areas based on detected unique portions and applies identification marks before printing. This allows the printing process to continue without stopping while ensuring that images overlapping with defective areas are automatically identified and can be handled separately, maintaining both productivity and print quality.
Data Source
AI summary
A control method for printing is provided which allows an image printed in an area including a unique portion on a continuous sheet to be identified as a defective image. In a case where a disabled area including the unique portion overlaps a part of a print area of an interest image being printed when the unique portion is detected, an identification mark for identifying the interest image is applied to the continuous sheet.