Patent ID: 7869092
Filing Date: 2011-01-11
Classification: H04N

Abstract:
1. An image processing apparatus comprising: color conversion means for converting R, G, B signals into a plurality of ink color signals corresponding to amounts of a plurality of color inks to be used, the plurality of color inks including achromatic color ink capable of being used for printing a monochrome image, wherein the color conversion means converts the R, G, B signals into the plurality of ink color signals by using a color conversion table that defines a correspondence relation between combinations of the R, G, B signals, which include combinations of the R, G, B signals values of which are the same as each other and combinations of the R, G, B signals values of which are not the same as each other, and combinations of the plurality of ink color signals, so that the achromatic color ink is used in all of a color reproduction region which is reproducible with the plurality of color inks, and wherein the color conversion table defines the correspondence relation so that the amount of the achromatic color ink to be used is larger than an amount of a chromatic color ink to be used in all of the color reproduction region.