Image Verification Skip for Partition Sheets
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Solution Overview
Problem
Existing image forming systems do not effectively handle the verification of print jobs composed of multiple pages, particularly when insertion sheets are used to separate bundles of sheets, as they lack a configuration to skip verification for partition sheets, leading to potential misclassification and incorrect discharge.
Innovation Solution
An image forming apparatus is configured with a printing unit, a reading unit, a verification unit, and a control unit that allows for the control of printing information indicating that certain images should not be verified, enabling the system to skip verification for partition sheets and manage their discharge appropriately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If verification processing is performed on all sheets including insertion sheets, then image quality can be ensured, but insertion sheets are incorrectly identified as defective and discharged to wrong destinations
Solution Approach 1:
The patent extracts the insertion sheet from the verification process by detecting specific characteristics (such as absence of image data or specific markers) and excluding it from verification. This allows normal sheets to be verified for quality while insertion sheets are automatically identified and routed separately without verification, preventing misclassification.
Solution Approach 2:
The patent introduces an intermediary control unit that receives information from both the verification unit and insertion sheet detection, and makes the final discharge destination decision. This intermediary coordinates between verification results and insertion sheet identification to ensure correct routing, preventing the contradiction between verification and proper discharge.
2Ease of operation
If verification processing is skipped for insertion sheets, then discharge correctness is improved, but image quality control is compromised
Solution Approach 1:
The patent extracts insertion sheets from the verification process through specific detection mechanisms (such as detecting absence of image data, specific markers, or metadata). Normal sheets continue to undergo full verification for image quality, while insertion sheets are identified and routed separately without verification, maintaining both discharge correctness and image quality control for appropriate sheets.
3Device complexity
If all sheets are subjected to the same verification process, then processing simplicity is maintained, but insertion sheets are misclassified as defective
Solution Approach 1:
The patent applies different verification processes to different types of sheets based on their characteristics. Normal sheets undergo complete verification including image quality checks, while insertion sheets are identified through specific markers or absence of image data and are routed separately without verification. This local differentiation ensures accurate classification while maintaining processing efficiency.
Solution Approach 2:
The patent performs preliminary detection of insertion sheet characteristics (such as specific markers, absence of image data, or metadata indicators) before the verification process. This preliminary identification allows the system to prepare appropriate handling paths, ensuring insertion sheets are correctly routed without undergoing verification that would misclassify them as defective.
Data Source
AI summary
An image forming apparatus includes a printing unit, a reading unit, a verification unit, and a control unit. The printing unit prints an image on a recording sheet. The reading unit reads the image printed by the printing unit. The verification unit verifies the image read by the reading unit. The control unit performs control to cause information, indicating that the image read by the reading unit is not to be verified by the verification unit, to be printed on the recording sheet with the image. When the reading unit reads the information, the control unit performs control so that the image is not to be verified by the verification unit.