Patent ID: 8270048
Filing Date: 2012-09-18
Classification: H04N

Abstract:
1. A color separation data generation method for generating color separation data for a printing apparatus that prints input colors on a print medium by using printing materials respectively corresponding to yellow, magenta and cyan, which are basic colors, and a printing material of a particular color, wherein the color separation data includes color component data respectively corresponding to yellow, magenta, cyan and the particular color, wherein the particular color indicates a hue angle in the color reproduction area, wherein a hue of the particular color is reproducible by mixing both first and second printing materials among the printing materials of the basic colors, wherein a first color has a maximum saturation at the hue of the particular color and is reproducible with the printing material of the particular color, and a second color has a maximum saturation at the hue of the particular color and is reproducible by mixing both the first and second printing materials, and wherein a lightness or saturation of the first color is higher than a lightness or saturation of the second color, the method comprising: obtaining the input colors, and using at least one processor to generate the color separation data corresponding to the input colors, wherein the generated color separation data for all hues between the hues of the first and second printing materials, including the hue of the particular color, include the color component data corresponding to the first printing material, the color component data corresponding to the second printing material and the color component data corresponding to the printing material of the particular color, the respective color component data having values greater than zero, and wherein the hue of the particular color is selected from one of hues between hues of yellow and magenta, hues between hues of magenta and cyan, and hues between hues of cyan and yellow.