Method for determining amounts of UCR and image processing appar

Details Method for determining amounts of UCR and image processing appar Method for determining amounts of UCR and image processing appar

1992-01-24

1993-01-19

Gellner, Michael L.

Photocopying

Projection printing and copying cameras

Methods

355327, 358 79, 358443, 358456, G03B 2732

Patent

active

051810689

ABSTRACT:
UCR (under color removal) amount is determined, which can satisfy printing conditions as desired easily and within short time. Gray balance for Y, M and C is inputted from input means 13. A control means 9 interpolates the inputted gray balance as necessary and instructs a test pattern generator 12 and an output unit 7 to output a test pattern so that matrix is formed by Y, M, C and K. Based on the outputted test pattern, a print plate is prepared, and a sample of matrix is prepared by 4-plate overlapping printing. Each density of matrix is measured, and said measured density value is inputted from the input means 13. The control unit 9 incorporates each density and calculates the amount of UCR, which satisfies the input gray balance from interrelation of the density of Y, M, C and K of the matrix.

REFERENCES:
patent: 5084762 (1992-01-01), Miyakawa

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