Process and apparatus for the determination of halftone...

Details Process and apparatus for the determination of halftone... Process and apparatus for the determination of halftone...

G - Physics

03

F

G03F 5/22 (2006.01) B41J 29/00 (2006.01) H04N 1/60 (2006.01) G06F 15/66 (1990.01)

Patent

CA 2076312

The invention relates to the use of a spectrophotometer connected with a computer to measure and store a solid color atlas in the computer. The halftone percentage values necessary for the adjustment of a given color are calculated by determining the desired color coordinates of the color involved and entered into the computer. The latter calculates from them, using the stored color atlas and a regression method, the halftone percentage values sought. Tn the process, with the aid of printing characteristics, stored color adaptations to prevailing printing conditions can be brought up to date without the need for the preparation of a new solid color atlas.

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