Method and system for predicting print colors

A system for predicting colors of a print produced by a printing press, comprising:

• a solid predicted colorimetric value calculator for calculating predicted colorimetric values of a solid print to be produced on a target printing base with color materials and having a combination of area ratios of 0% and 100%, based on a spectral reflectance of said target printing base and property values of said color materials;
• a solid difference calculator for calculating solid differences between measured colorimetric values of a solid color chart, produced on a standard printing base with said color materials and having a combination of area ratios of 0% and 100%, and said predicted colorimetric values;
• a halftone differential calculator for calculating halftone differences of a print produced on said target printing base with said color materials and having a halftone area ratio, based on said solid differences;
• and
• a print predicting profile generator for generating a print predicting profile for predicting colors of a print to be produced on said target printing base with said color materials, using the measured colorimetric values of said color chart produced on said standard printing base with said color materials and having a predetermined area ratio, and said halftone differences,
• whereby the colors of the print can be predicted using said print predicting profile.

A system for predicting colors of a print produced by a printing press, comprising:

• a solid predicted colorimetric value calculator for calculating predicted colorimetric values of a solid print to be produced on a target printing base with color materials and having a combination of area ratios of 0% and 100%, based on a spectral reflectance of said target printing base and property values of said color materials;
• a solid difference calculator for calculating solid differences between measured calorimetric values of a solid color chart, produced on a standard printing base with said color materials and having a combination of area ratios of 0% and 100%, and said predicted calorimetric values;
• a halftone differential calculator for calculating halftone differences of a print produced on said target printing base with said color materials and having a halftone area ratio, based on said solid differences;
• a standard printing base profile generator for generating a standard printing base profile representing the relationship of the measured colorimetric values with respect to said color chart produced on said standard printing base with said color materials and having a predetermined area ratio;
• and
• a print predicting profile generator for correcting said standard printing base profile with said halftone differences, so as to generate a print predicting profile for predicting colors of a print to be produced on said target printing base with said color materials,
• whereby the colors of the print can be predicted using said print predicting profile.