Patent ID: 9471858
Filing Date: 2016-10-18
CPC Classification: B41F,B41P,G06K,H04N

Claim Text:
1. A method for controlling coloring in a printing process of a printing press by using a computer, which comprises the steps of: printing a test element with a selected number of colored measuring areas; measuring the colored measuring areas of the test element with a spectrophotometer; calculating actual colorimetric values from measured color values from the colored measuring areas of the test element; displaying selected actual color values on a display apparatus; entering reference colorimetric values and calculating adapted spectral color values from the reference colorimetric values; calculating densitometric, colorimetric or spectral actual tonal values or actual tonal value gains from calculated actual colorimetric values of a subset of the colored measuring areas of the test element measured with the spectrophotometer, and displaying on a display device; entering densitometric, colorimetric or spectral reference tonal values or reference tonal value gains and calculating adapted spectral color values by means of comparison with the calculated actual colorimetric values; and storing the adapted spectral color values for a calculation of color profiles, process calibrations and process control values and activating the printing press on a basis of the color profiles, the process calibrations and the process control values.