Patent ID: 6851794

Claim:
A method of printing images on a printing medium with the aid of a printing device capable of using an ink set containing a black ink and multiple types of chromatic primary color inks, each of which has a cyan, magenta, or yellow hue, comprising the steps of: (a) preparing a plurality of color conversion lookup tables for converting first color image data expressed by a first color system to second color image data expressed by a second color system for the ink set, the plurality of color conversion lookup tables including a first color conversion lookup table with comparatively desirable characteristics of dependence of color appearance on a light source and a second color conversion lookup table with comparatively desirable characteristics of graininess; (b) selecting one color conversion lookup table from the plurality of color conversion lookup tables and converting the first color image data to the second color image data; (c) producing print data representing formation of ink dots at each pixel based on the second color image data; and (d) printing images in accordance with the print data.