Printing control apparatus, printing system, and printing control program

A printing control system which allows a printing apparatus to perform printing by fixing on a recording medium a plurality of color materials which includes high-concentration and low-concentration color materials of which hues are substantially equal to each other with respect to at least one hue and of which concentrations are different, the printing control system designating a color material amount set that is a combination of the amounts used of the color materials to the printing apparatus and allowing the printing apparatus to perform printing based on the color material amount set, the printing control system comprising:

• a printing unit which designates the color material amount set corresponding to a designated index to the printing apparatus by referring to a lookup table that defines a correspondence between the color material amount set and an index and allows the printing apparatus to perform printing,
• wherein the lookup table defines a correspondence between the index that specifies a target value that is information indicating a color of an object and a target color material amount set that is the color material amount set of which approximation to the target value is maximized when the color material is fixed on the recording medium in the printing apparatus,
• wherein the target color material amount set is a second color material amount set that is obtained by predicting a first color material amount set based on a predetermined prediction model so that the approximation is maximized while the used amount of the low-concentration color material is suppressed and by predicting the second color material amount set by using the first color material amount set as an initial value of the predetermined prediction model so that the approximation is maximized while the used amount of the high-concentration color material is suppressed, and
• wherein the printing apparatus includes a printing performing unit which performs printing based on the color material amount set.

A printing control program which allows a computer to execute a function which allows a printing apparatus to perform printing by fixing on a recording medium a plurality of color materials which includes high-concentration and low-concentration color materials of which hues are substantially equal to each other with respect to at least one hue and of which concentrations are different, wherein the function designates a color material amount set that is a combination of the amounts used of the color materials to the printing apparatus and allows the printing apparatus to perform printing based on the color material amount set,

• wherein the printing control program causes the computer to execute a printing function which designates the color material amount set corresponding to a designated index to the printing apparatus by referring to a lookup table that defines a correspondence between the color material amount set and an index and allows the printing apparatus to perform printing,
• wherein the lookup table defines a correspondence between the index that specifies a target value that is information indicating a color of an object and a target color material amount set that is the color material amount set of which approximation to the target value is maximized when the color material is fixed on the recording medium in the printing apparatus, and
• wherein the target color material amount set is a second color material amount set that is obtained by predicting a first color material amount set based on a predetermined prediction model so that the approximation is maximized while the used amount of the low-concentration color material is suppressed and by predicting the second color material amount set by using the first color material amount set as an initial value of the predetermined prediction model so that the approximation is maximized while the used amount of the high-concentration color material is suppressed.