Apparatus and computer program product controlling printer color calibration using color chart history information

A non-transitory computer-readable storage medium storing a color calibration control program to be executed in a print control apparatus which controls at least one printing device, the color calibration control program, when being executed by a processor of the print control apparatus, causing the print control apparatus to perform processing comprising:

• storing measured color values into a database which stores history information of color measurement, the measured color values being obtained by measuring colors in a color chart by using a printing device;
• selecting a specific color by referring to the database, the specific color being a color to be used for determining whether to calibrate the printing device, the specific color being exclusively a single color out of the plurality of the colors in the color chart and being selected by performing calculations using the history information of the color chart;
• and
• determining whether to calibrate the printing device while the printing device is processing a print job, which includes
• causing the printing device to measure the specific color to obtain a measured color value of the specific color, and
• determining whether to calibrate the printing device on a basis of a change with time in the measured color value of the specific color.