Patent Document ID: 4884221
Application ID: 07038366
Patent Flag: 1

Claim One:
1. A color measuring device comprising: a photoelectric conversion means which separates light from a sample into a plurality of predetermined basic color components so as to output basic color signals corresponding to quantities of light of the basic color components, respectively; a data processing means including: a calculating means for calculating, on the basis of the basic color signals from said photoelectric conversion means, chromaticity coordinates defined by a predetermined colorimetric system so as to calculate a color value of the sample, a target setting means for setting a target color value of the sample in the predetermined colorimetric system, a region setting means for setting a predetermined region containing the color value, a region decision means for deciding whether or not the color value calculated by said calculating means falls within the predetermined region set by said region setting means, and an approximation decision means for deciding, when it was decided by said region decision means that the color value calculated by said calculating means falls within the predetermined region, whether or not the color value calculated by said calculating means has reached its most approximated value to the target color value set by said target setting means; and an output means for outputting a result of the decision of said approximation decision means.