Patent ID: 7321448
Filing Date: 2008-01-22
Classification: B41M,G03F,H04N

Abstract:
1. A color proofing method for improving the color reproducibility of printed matter to be produced by a printing press in proof print produced by a proof press, the color proofing method comprising the step of: correcting proof printing image data, in which each of levels of monochromatic color gradation of black on the printed matter is represented on the proof print, out of the proof printing image data over the entire color space in a subtractive process resulting from color matching between proof print produced by the proof press and the printed matter to be produced by the printing press in such a manner that a part having a black ink area factor of 100% on the printed matter is represented only with black ink also on the proof print, but that a part other than the part having a black ink area factor of 100% on the printed matter is represented on the proof print by using under color removal, to thus reproduce, on the proof print, the representing characteristics of the black ink on the printed matter; and, wherein the step of correcting the proof printing image data includes the steps of: wherein 1≦P≦100; wherein 1≦P≦100, to thus add the addition value α wherein 1≦P≦100, to thus subtract the reduction values β