Patent ID: 6890049
Filing Date: 2005-05-10
Classification: B41J,H04N

Abstract:
1. An ink cartridge used in a method of recording a multi-tone image by controlling a head that is able to record at least three different color inks, which are mixable to express hues in a predetermined range, and regulating a distribution of dots formed by said at least three different color inks based on tone signals regarding an original image to be printed, said method comprising the steps of: determining a density ratio of a specific color ink, which has highest lightness against a fixed recording ratio among said at least three different color inks, to the other color inks, in order to enable a color balance to be biased to said specific color ink having the highest lightness in case that said specific color ink and the other color inks have an identical recording ratio per unit area; and correcting a recording amount of said specific color ink having the highest lightness to a level that cancels said bias wherein said ink cartridge has said at least three different color inks, which are mixable to express hues in the predetermined range and stored therein, wherein said specific color ink having the highest lightness among said at least three different color inks has a dye density higher than a balancing density that ensures a color balance in case that said at least three different color inks have an identical recording ratio per unit area, a volume of said specific color ink stored in said ink cartridge being not greater than a volume of each of the other color inks.