Control device, image forming system and program for controlling total toner amount

An image forming system comprising:

• a print device configured to form an image on a recording medium based on image data in which density values of multiple colors are defined every pixel;
• and
• a control device configured to control the print device, the control device including:
• a stored color setting unit configured to independently set, for a plurality of the objects, color material designation information in response to user input, the color material designation information indicating a unrestricted toner color for a respective object, the non-restricted toner color being one of a plurality of toner colors usable by the print device whose density is unrestricted for the respective object;
• and
• a determination unit configured to determine, for each of the objects, density values of the respective non-restricted toner color based on the color material designation information, such that a total sum of the density values of the plurality of toner colors used to produce the respective object is within a value subtracting a density value of the non-restricted toner color from a reference value.

A computer program product comprising:

• a non-transitory computer-usable medium having a program that causes a control device that controls a print device that forms an image on a recording medium based on image data in which density values of multiple colors are defined every pixel, to:
• independently set, for a plurality of the objects, color material designation information in response to user input, the color material designation information indicating a unrestricted toner color for a respective object, the non-restricted toner color being one of a plurality of toner colors usable by the print device whose density is unrestricted for the respective object;
• and
• determine, for each of the objects, density values of the respective non-restricted toner color based on the color material designation information, such that a total sum of the density values of the plurality of toner colors used to produce the respective object is within a value subtracting a density value of the non-restricted toner color from a reference value.