Print Quality Inspection Across Dual RIP Image Sources
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Solution Overview
Problem
Existing quality inspection apparatuses fail to account for differences in RIP processing characteristics between print apparatuses and user-specific RIP apparatuses, leading to inaccurate inspections of printed products.
Innovation Solution
A quality inspection apparatus that communicates with an image forming apparatus and performs inspections based on both print apparatus-generated and user-specific RIP apparatus-generated images, considering differences in RIP processing to ensure accurate print quality evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If quality inspection is performed using only image data from the print apparatus's RIP processing, then the inspection process is simple and fast, but the inspection accuracy is insufficient because it does not account for user-specific RIP characteristics
Solution Approach 1:
The inspection process is segmented into two distinct inspection types: first inspection comparing the printed image with the print sample image (from print apparatus RIP), and second inspection comparing the printed image with the user sample image (from user's RIP apparatus). This segmentation allows each inspection to serve a specific purpose - the first detects printing defects while the second detects RIP processing differences, thereby improving overall inspection accuracy without requiring a single complex inspection method
Solution Approach 2:
The quality inspection apparatus acts as an intermediary that receives and processes both the print sample image from the print apparatus and the user sample image from the user's RIP apparatus. By introducing this intermediary system that handles multiple image sources and coordination, the patent resolves the contradiction by managing the complexity of multi-source comparison while achieving superior inspection accuracy through comprehensive defect detection
2Reliability
If only a single inspection method is used, then the inspection process is simple, but it cannot detect both printing defects and RIP processing differences
Solution Approach 1:
The inspection system is divided into two separate inspection functions: first inspection for detecting printing defects by comparing with the print sample image, and second inspection for detecting RIP processing differences by comparing with the user sample image. This segmentation enables reliable detection of different defect types through specialized comparison methods, with each inspection type optimized for its specific detection goal
Solution Approach 2:
The quality inspection apparatus is designed with multi-functionality to perform both first inspection and second inspection using the same hardware system. By making the inspection apparatus universal - capable of handling both print apparatus RIP images and user RIP apparatus images - the system achieves comprehensive defect detection reliability without requiring separate specialized systems for each inspection type
Data Source
AI summary
A quality inspection apparatus capable of communicating with at least an image forming apparatus includes a first reception unit that receives from the image forming apparatus a first image generated by execution of image generation processing on print data by the image forming apparatus from the image forming apparatus, a first inspection unit that performs first inspection based on a scanned image acquired by reading of a printed product printed by the image forming apparatus and the first image, a second inspection unit that performs second inspection based on a second image generated by execution of image generation processing on the print data by an image processing apparatus and the first image, and a transmission unit that transmits information based on a result of inspection performed by the first inspection unit and a result of inspection performed by the second inspection unit to the image forming apparatus.