Patent ID: 6611357
Filing Date: 2003-08-26
Classification: B41F,G01J,H04N

Abstract:
A method of stipulating values for use in the control of a printing machine, which produces multicolor printed copies from a digitally produced image original, comprising the steps of:assigning a desired color locus to at least one image element in the digitally produced image original to be achieved in production of multicolor printed copies; determining, from proportions of the printing area of individual colors within the image element, a desired color spectrum by varying spectra of the individual colors in such a way that the desired color spectrum, given colorimetric assessment, essentially yields the desired color locus; and using a reflectance desired value corresponding to a given area coverage of individual colors to be used in production of the multicolor printed copies in conjunction with a reflectance actual value corresponding to the desired color spectrum, the reflectance actual value derived by minimally varying actual area coverage, &agr;iAij, of the individual colors to generate the desired color spectrum, where furthermore at least one &agr;i is not equal to 1 whereby at least colori's area coverage is changed, to perform a derivation of adjustment commands which control ink feed in the printing machine so that the multicolor printed copies are in essential colorimetric agreement with the digitally produced image original.