Color Correction Apparatus for Image Forming Systems
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Solution Overview
Problem
Conventional color correction processes for image forming apparatuses are inefficient as they require sequential correction of lower and upper layer colors, leading to prolonged processing times and reduced productivity.
Innovation Solution
A color correction apparatus that obtains first and second color information from a recording medium and estimates correction values for the second color based on the influence of correcting the first color, allowing simultaneous correction of both layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sequential correction of lower and upper layer colors is performed, then color accuracy is improved, but processing time increases and productivity decreases
Solution Approach 1:
The patent calculates and stores correction values for both lower and upper layer colors in advance, before actual color correction is needed. When color correction is required, the pre-calculated values are directly applied, eliminating the need for sequential processing. This preliminary calculation approach maintains color accuracy while dramatically reducing processing time and improving productivity.
2Stability of the object's composition
If sequential correction process is used, then color stability is maintained, but processing time is prolonged
Solution Approach 1:
Correction values for both lower and upper layer colors are calculated and stored in advance. When color correction is needed, these pre-calculated values are immediately applied without waiting for sequential processing, thereby maintaining color stability while eliminating waiting time.
Solution Approach 2:
The patent creates a copy of the correction calculation process by pre-computing correction values for various color conditions and storing them in a lookup table. During actual operation, the system copies/applies the appropriate pre-computed values based on measured color conditions, avoiding repeated sequential calculations and reducing processing time while maintaining color stability.
Data Source
AI summary
A color correction apparatus has: an obtaining unit that obtains first color information of a first image formed by a first color formed on a recording medium and second color information of a second image formed by a second color superimposed on the first color formed on the recording medium; and a correction unit that finds a correction value for the second color by estimating color information of the second color based on the first color information and the second color information, the color information of the second color being varied due to an influence in correcting the first color information to a first target value of the first color.