Patent ID: 8797614

Claim:
A color conversion table creating device which creates a color conversion table for color conversion from input image data including cyan, magenta, yellow, and black to output image data including cyan, magenta, yellow, and black, the device comprising: a color material amount limiting processing section which performs color material amount limiting which limits a total amount of color components for each combination of an input value in the color conversion table; a first color conversion processing section which performs color conversion on a cyan component, a magenta component, and a yellow component after the color material amount limiting by the color material amount limiting processing section, using a three dimensional table for color conversion from a cyan component, a magenta component, and a yellow component of the input image data to a cyan component, a magenta component, and a yellow component of the output image data; a second color conversion processing section which performs color conversion on a black component after the color material amount limiting by the color material amount limiting processing section using a one dimensional table for color conversion from a black component of the input image data to a black component of the output image data; a combining section which combines the cyan component, the magenta component, and the yellow component after the color conversion using the three dimensional table with the black component after the color conversion using the one dimensional table; a color material limiting inverse conversion processing section which performs inverse conversion of the color material amount limiting on the cyan component, the magenta component, the yellow component, and the black component combined by the combining section; and an output value determining section which sets the cyan component, the magenta component, the yellow component, and the black component after the inverse conversion of the color material amount limiting by the color material amount limiting inverse conversion processing section as a combination of an output value in the color conversion table.