| 摘要 |
One of ink chambers 102 of an ink cartridge 70 has a larger volume. The color ink having the largest lightness value is stored in this ink chamber. For the amounts vc1, vc2, vm1 and vm2 of light and deep cyan and magenta inks contained in the ink chambers thereof, the amount vy of the ink having the largest lightness value contained in the cartridge thereof, or the yellow, is defined as below:vy<vc1+vc2, and vy<vm1+vm2,Vc1<vy<Vc1+vc2, and Vm1<vy<vm1+vm2.When a natural picture or a graph painted with different monocolors are actually printed, those color inks are substantially uniformly used. There is no case where one ink is used up earlier than the remaining ones, and the color ink cartridge 70b must be replaced with a new one in a state that large amounts of the remaining inks are still left.
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