Patent ID: 6474799
Filing Date: 2002-11-05
Classification: B41J

Abstract:
An ink cartridge containing inks for a printer, comprising:a body having an interior and a bottom wall at least two partitioning walls formed in said ink cartridge dividing the interior into at least three ink chambers containing inks, at least one of said ink chambers having a different volume than the other ink chambers; at least three ink supply ports, each of said ink supply ports being formed in the bottom wall of a respective ink chamber of said at least three ink chambers; and inks each in a different chamber, including n chambers separately containing n kinds of light and deep color inks of hues Y1, . . . , Yn wherein n is a natural number &gE;1, and m chambers separately containing m kinds of light and deep color inks of hues Xl, . . . , Xm, wherein m is a natural number &gE;2, the lightness value of hues Y1, . . . , Yn being larger than the lightness values of hues X1, . . . , Xm for the same recording rate; and the volumes VYi (where 1&lE;i&lE;n) of the ink of each respective n kind of ink of the hues Y1, . . . , Yn and the volumes VXk (where 1&lE;k&lE;m) of ink of each respective m kind of ink of the hues X1, . . . , Xm satisfying the following relationship &Sum;i=1n&it;â€ƒ&it;VYi<&Sum;k=1m&it;â€ƒ&it;VXk(1)and wherein the volume of the n kind of ink of the deepest color is greater than the volume of the m kind of ink of the deepest color.