Patent ID: 8310723

Claim:
An image processing apparatus for printing an image by a color material comprising: a mode setting unit constructed to set monochrome or color modes included in a plurality of print modes; an adjustment unit constructed to adjust R,G,B signals representing a color of an image for printing in the monochrome mode, when the mode setting unit sets the monochrome mode; a first conversion unit constructed to convert R, G, B signals that represent a color of an image to be printed in the color mode into a plurality of color material signals corresponding to amounts of a plurality of color materials to be used in the color mode, based on a predetermined definition that defines a correspondence relation between R, G, B signals and signals corresponding to amounts of a plurality of color materials, when the mode setting unit sets the color mode; a second conversion unit constructed to convert the R, G, B signals that have been adjusted by said adjustment unit into a plurality of color signals corresponding to amounts of a plurality of color materials to be used for image printing in the monochrome mode, based on the predetermined definition used by the first conversion unit.