Patent ID: 7672029

Claim:
An image processing device for generating color data comprising: a lookup table including first color data associated with second color data, the first color data being represented in terms of density of one or more first reference colors, and the second color data being represented in terms of density of a plurality of second reference colors; and a color conversion unit configured to generate the second color data based on the first color data by referring to the lookup table, wherein the plurality of second reference colors are colors of inks used by a printing device, and include two same hue reference colors having same hue but different lightness, and the lookup table is a table in which, from among a plurality of data sets of the second color data that correspond to a plurality of data sets of the first color data representing achromatic color, for data sets of second color data representing color of higher lightness than a reference lightness, a first same hue reference color having lower lightness among the two same hue reference colors has density of 0, wherein the reference lightness is lightness equivalent to 110% or less of minimum lightness which is lightness of color having lowest lightness among colors that is able to be reproduced on a printing medium using only ink of the first same hue reference color.