Printing control device, printing system and printing control program

A printing system which includes a printing apparatus performing printing by attaching a first color material group onto a print medium and a printing control device designating a color material set, which is a combination of use amounts of color materials of the first color material group, to the printing apparatus to permit the printing on the basis of the color material amount set,

• wherein the printing apparatus includes a printing unit which designates the color material amount set corresponding to a designated index to the printing apparatus to permit the printing with reference to a lookup table defining a correspondence relation between the color material amount set and the index,
• wherein the lookup table defines a correspondence relation between the color material amount set and the index specifying a mixed color, which is created by use of a second color material group different from the first color material group, the color material amount set being estimated so that spectral reflectivity approximate to spectral reflectivity estimated by a predetermined estimation model on the basis of spectral reflectivity of color materials of the second color material group as a mixed-color source and a use ratio of the color materials of the second color material group in the mixed color is reproduced on the print medium, and
• wherein the printing apparatus further includes a printing execution unit which performs the printing on the basis of the color material amount set.

A computer readable printing control program which causes a computer to execute a function of permitting a printing apparatus to perform printing on the basis of a color material amount set, which is a combination of use amounts of color materials in a first color material group, when permitting the printing apparatus to perform printing by attaching the color materials of the first color material group to a print medium, the computer readable printing control program causing the computer to execute:

• a printing function which designates the color material amount set corresponding a designated index to the printing apparatus to permit the printing apparatus to perform the printing with reference to a lookup table defining a correspondence relation between the color material amount set and the index
• wherein the lookup table defines a correspondence relation between the color material amount set and the index specifying a mixed color, which is created by use of a second color material group different from the first color material group, the color material amount set being estimated so that spectral reflectivity approximate to spectral reflectivity estimated by a predetermined estimation model on the basis of spectral reflectivity of color materials of the second color material group as a mixed-color source and a use ratio of the color materials of the second color material group in the mixed color is reproduced on the print medium.