Color removal dependent on tone

Details Color removal dependent on tone Color removal dependent on tone

B - Operations, Transporting

41

L

101/72

B41L 15/10 (2006.01) H04N 1/60 (2006.01)

Patent

CA 1209401

ABSTRACT Given color removal depending on tone in four- color printing, wherein the color components of the chromatic printing inks yellow, magenta and cyan are reduced and the amount of black printing ink is increased to compensate for such removal, a nearly completely non-chromatic format is employed up to a gray scale value which corresponds to the full tone of the black printing ink employed and the color components of the chromatic printing inks are again increased proceeding from that gray scale value up to the greatest image depth.

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