Patent ID: 6744513
Filing Date: 2004-06-01
Classification: G01J

Abstract:
A computer color matching method of paint, being a toning method of determining a blending ratio of colorants and luster color materials conforming to a target color by computation, when color matching a metallic and pearlescent paint composed of plural colorants and luster color materials, said method comprising the steps of:preliminary measuring the color of a paint, as liquid varied in a volume formulation ratio of usable colorants, and luster color materials as a spectral reflectance by a paint color measuring means; storing the preliminary measured data in a memory of a computer; adjusting a color of each one of two or more paints in the blending ratio for realizing a target color which is measured by the paint color measuring means when color matching a metallic and pearlescent paint without preparing painted panels; predicting and computing a colorimetric value of reproduced color by using the measured data and the preliminary measured data by considering a change in the colorimetric value due to differences in the blending ratio of colorants and luster color materials; and determining an appropriate blending ratio of colorants and luster color materials by computation.