Printing control method, printing control apparatus, medium on which printing control program is recorded

摘要

The conventional print-controlling apparatus performs printing with CMY inks and additional inks having a lower lightness than CMY inks, which are mixed in a specific ratio when ejected from the print head, so that colors in the entire range from low to high lightness are expressed. Unfortunately, chromatic color inks differing in hue from CMY inks have a low lightness or a high density, and this leads to poor granularity in the region of high lightness. This disadvantage is eliminated if color conversion is accomplished by using the granularity improvement LUT 15c that limits the deposition of RV inks. In this way it is possible to limit the ejection of RV inks in the region of high lightness and to improve the ink granularity in the region of high lightness.