Dynamic Sheet Discharge Control for Print Inspection Systems
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Solution Overview
Problem
Conventional inspection systems for print products cannot selectively discharge sheets to the same destination based on inspection results, leading to confusion between defective and non-defective products.
Innovation Solution
An inspection system that includes a display control unit to offer modes for switching or not switching the sheet discharge destination based on inspection results, allowing users to choose whether to differentiate discharge destinations for defective and non-defective products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sheet discharge destination is always switched for detected defects, then defective products can be separated from non-defective products, but users cannot easily identify and manage defective products by extracting them from the same discharge destination
Solution Approach 1:
The sheet discharge destination is made dynamically adjustable based on user needs. The system provides multiple discharge modes (separate discharge for defects, unified discharge for both, and selective discharge by inspection result) that can be switched according to operational requirements, allowing flexible control over how defective and non-defective sheets are handled.
Solution Approach 2:
The discharge control parameter (discharge destination) is changed based on the inspection result parameter. When defects are detected, the system can change the discharge destination parameter to separate defective sheets, or maintain the same discharge destination for unified handling, depending on the selected operation mode.
2Reliability
If the sheet discharge destination is switched based on inspection results, then defective products are automatically separated, but the system complexity increases due to multiple discharge modes and control mechanisms
Solution Approach 1:
The discharge control unit is designed with multi-functionality to handle multiple discharge modes (separate discharge, unified discharge, selective discharge) within a single system component. This universal design allows the same control unit to manage different discharge scenarios without requiring separate dedicated mechanisms for each mode.
Solution Approach 2:
The system uses feedback from the inspection result to automatically control the discharge destination. The control unit receives inspection information and automatically adjusts discharge settings, eliminating the need for manual intervention and simplifying the user interface while maintaining automated defect separation capabilities.
3Device complexity
If all sheets are discharged to the same destination regardless of inspection results, then the discharge system remains simple, but users cannot easily distinguish between defective and non-defective products
Solution Approach 1:
The discharge destination is segmented into multiple destinations (first discharge destination for non-defective sheets, second discharge destination for defective sheets) based on inspection results. This segmentation allows the system to maintain simple control logic while providing clear separation and identification of defective versus non-defective products.
Solution Approach 2:
The system uses visual differentiation (analogous to color changes) through distinct discharge destinations or markers to indicate the inspection status of sheets. Defective and non-defective sheets are discharged to distinguishable locations, providing visual information about product quality without adding complex control mechanisms.
Data Source
AI summary
An inspection system inspects a grade of a print product based on comparison between a scanned image obtained by scanning a print product and a reference image, receives a first mode that does not switch a sheet discharge destination of the print product regardless of an inspection result of the print product or a second mode that switches the sheet discharge destination of the print product according to the inspection result of the print product is received through a screen, and controls the sheet discharge destination of the print product based on the received mode and the inspection result.