Image Inspection for Non-Ejection Nozzle Correction
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Solution Overview
Problem
Existing inspection apparatuses fail to consider non-ejection correction when inspecting images formed by image forming apparatuses, leading to inadequate inspection performance.
Innovation Solution
An information processing system that transmits correction information related to non-ejection correction from an image forming apparatus to an inspection apparatus, allowing the inspection apparatus to adjust its inspection process accordingly, including adjusting inspection accuracy based on the correction information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the inspection apparatus performs standard inspection without considering non-ejection correction information, then the inspection process is simple and fast, but the inspection accuracy deteriorates because it cannot distinguish between actual defects and areas compensated by non-ejection correction
Solution Approach 1:
The inspection apparatus receives correction information about non-ejection nozzles and adjacent nozzles before performing the inspection. This preliminary information allows the inspection process to anticipate which areas may show apparent defects due to correction and adjust its evaluation criteria accordingly, improving accuracy without adding complex hardware
Solution Approach 2:
The inspection apparatus changes the inspection parameters (such as acceptance criteria, evaluation thresholds, or inspection regions) based on the received correction information. By dynamically adjusting inspection parameters according to the correction data, the system achieves higher accuracy while maintaining a relatively simple inspection process
2Measurement precision
If the inspection apparatus increases inspection accuracy by considering correction information, then defect detection improves, but inspection time and processing load increase
Solution Approach 1:
The inspection apparatus extracts only the necessary correction information (identifying non-ejection nozzles and their adjacent nozzles) from the correction data and uses this subset for inspection adjustments. By taking out only the essential information needed for accurate defect detection, the system avoids excessive processing while maintaining high detection accuracy
Solution Approach 2:
The inspection apparatus applies correction information selectively to specific regions or nozzles that require it, rather than uniformly increasing inspection strictness across the entire image. This partial application of correction-based inspection reduces unnecessary processing time while still achieving accurate defect detection where needed
Data Source
AI summary
An information processing system includes a processor configured to, in a case of executing non-ejection correction of increasing an ejection amount of a nozzle adjacent to a non-ejection nozzle in an image forming apparatus that forms an image by ejecting liquid droplets from plural nozzles based on image data, transmit correction information related to the non-ejection correction to an inspection apparatus that scans an image formed by the image forming apparatus and inspects the image.