Patent ID: 6435654
Filing Date: 2002-08-20
Classification: G06K,H04N

Abstract:
A method for calibrating a color printer, said method comprising the steps of(a) providing a set of elementary halftone color patches printed by the color printer on a medium, (b) measuring an optical characteristic of the elementary halftone color patches, (c) representing an arbitrary halftone color patch with a composite of the elementary halftone color patches, (d) selecting an optical characteristic adjustment parameter &ggr;, by minimizing an overall error in an optical characteristic for at least one arbitrary halftone color patch, (e) calculating the overall error in an optical characteristic for at least one adjustment parameter &ggr;, (f) selecting the adjustment parameter &ggr; that achieves the minimum overall error in the optical characteristic, and (g) adjusting the measured optical characteristic of the elementary halftone color patches with said adjustment parameter &ggr; to reflect an optical characteristic of the medium and to compensate for said optical characteristic of said medium.