Abstract: A correction profile acquisition part calculates a correction coordinate value based on a standard coordinate value stored in standard profiles color-matched to a predetermined printer to store the correction coordinate value in correction profiles. A color conversion processing part uses the correction profiles to convert input image data into CMYK data. The correction coordinate value is increased in black (K) component value and decreased in cyan (C), magenta (M) and yellow (Y) component values, as compared with the yet-to-be-corrected coordinate value (or the standard coordinate value). A color difference between the correction coordinate value and the standard coordinate value stored in the standard profiles is less than a predetermined value. Thus, the CMYK data obtained by the conversion using the correction profiles is color-matched to the printer, and requires a smaller amount of ink for printing.