Print controller, print control method, and print control program

A print control method in which image data wherein colors at the pixels constituting an image are rendered by color component values in a first color space is acquired and transformed into image data wherein colors at the pixels are rendered by the color component values of inks in various colors used in a printing device and the printing device is controlled when print operation is performed, the method comprising:

• a step for storing beforehand on a predetermined storage medium a first profile wherein the combinations of color component values in the first color space are in correspondence with the combinations of color component values in a second color space composed of non-equipment-dependent color components and a second profile wherein the combinations of color component values in a third color space composed of the ink color components of said printing device are in correspondence with the combinations of color component values in said second color space;
• a step for bringing a color rendered only by a specific color component value in said first color space and a color rendered only by a specific color component value in said third color space into correspondence with each other in the second color space, referring to said first profile and second profile, and generating a color conversion table which defines the correspondence between the color component values in the first color space which render the color and the color component values in the third color space which render the color;
• a step for converting colors rendered only by the specific color component value in said acquired image data into colors rendered only by the specific color component value in the third color space, referring to the color conversion table;
• and
• a step for performing print operation based on the image data which underwent the color conversion.

A print controller which controls a printing device which performs print operation utilizing inks in a plurality of colors, the print controller comprising:

• an image data acquiring unit which acquires image data wherein colors at the pixels constituting an image are rendered by color component values in a first color space;
• a first profile storing unit which stores first profiles wherein the combinations of color component values in the first color space and the combinations of color component values in a second color space composed of non-equipment-dependent color components are in correspondence with each other;
• a second profile storing unit which stores second profiles wherein the combinations of color component values in a third color space composed of the ink color components of said printing device and the combinations of color component values in said second color space are in correspondence with each other;
• a color conversion table generating unit which brings a color rendered only by a specific color component value in said first color space and a color rendered only by a specific color component value in said third color space into correspondence with each other in the second color space, referring to said first profile and second profile, and generates a color conversion table which defines the correspondence between the color component value in the first color space which indicates this color and the color component value in the third color space which indicates this color;
• a color conversion unit which converts a color rendered only by a specific color component value in said acquired image data into a color rendered only by a specific color component value in the third color space, referring to said color conversion table;
• and
• a print operation performing unit which performs print operation based on the image data which underwent the color conversion.

A medium with a print control program recorded thereon for acquiring image data wherein colors at the pixels constituting an image are rendered by color component values in a first color space and transforming the image data into image data wherein colors at the pixels are rendered by the color component values of inks in various colors used in a printing device to control the printing device when print operation is performed, wherein the program causes a computer to carry out:

• a function of storing on a predetermined storage medium a first profile wherein the combinations of color component values in the first color space and the combinations of color component values in a second color space composed of non-equipment-dependent color components are in correspondence with each other and a second profile wherein the combinations of color component values in a third color space composed of the ink color components of said printing device and the combinations of color component values in said second color space are in correspondence with each other;
• a color conversion table generating function of bringing a color rendered only by a specific color component value in said first color space and a color rendered only by a specific color component value in said third color space into correspondence with each other in a second color space, referring to said first profile and second profile, and generating a color conversion table which defines the correspondence between the color component value in the first color space which indicates this color and the color component value in the third color space which indicates this color;
• a color conversion function of converting a color rendered only by a specific color component value in said acquired image data into a color rendered only by a color component value in the third color space, referring to the color conversion table;
• and
• a print operation performing function of performing print operation based on the image data which underwent the color conversion.