Printing apparatus, method for controlling printing apparatus, and computer-readable storage medium

A method for controlling a printing apparatus, the printing apparatus comprising a head having first nozzles for printing an image based on image data in inks in basic colors on a printing medium and second nozzles for printing an image based on the image data in an ink in a custom color different from the basic colors on the printing medium, first flow paths for supplying the inks in the basic colors to the first nozzles, at least one second flow path for supplying the ink in the custom color to the second nozzles, and a display, the method comprising:

• acquiring an imaging color gamut, the imaging color gamut being a gamut in a predetermined color space including color values included in the image data;
• for each of a plurality of option colors, acquiring a printing color gamut in the predetermined color space, the printing color gamut including color values of colors printable with the first nozzles and the second nozzles in the inks in the basic colors and the option color, one of the plurality of option colors being selectable as the custom color;
• acquiring an evaluation value for each of the plurality of option colors based on a comparison between the printing color gamut and the imaging color gamut;
• and
• before loading the at least one second flow path with the ink in the custom color, displaying a ranked order of the plurality of option colors based on the evaluation values in the display.

A non-transitory computer readable storage medium storing computer readable instructions that are executable by a computer configured to control a printing apparatus, the printing apparatus comprising a display and a head, the head having first nozzles for printing an image based on image data in inks in basic colors on a printing medium, second nozzles for printing an image based on the image data in an ink in a custom color different from the basic colors on the printing medium, first flow paths for supplying the inks in the basic colors to the first nozzles, and at least one second flow path for supplying the ink in the custom color to the second nozzles, the computer readable instructions, when executed by the computer, causing the computer to:

• acquire an imaging color gamut, the imaging color gamut being a gamut in a predetermined color space including color values included in the image data;
• for each of a plurality of option colors, acquire a printing color gamut in the predetermined color space, the printing color gamut including color values of colors printable with the first nozzles and the second nozzles in the inks in the basic colors and the option color, one of the plurality of option colors being selectable as the custom color;
• acquire an evaluation value for each of the plurality of option colors based on a comparison between the printing color gamut and the imaging color gamut;
• and
• before loading the at least one second flow path with the ink in the custom color, display a ranked order of the plurality of option colors based on the evaluation values in the display.