Patent ID: 6843546
Filing Date: 2005-01-18
Classification: B41J

Abstract:
1. A method of printing by forming ink dots on a print medium during main scans, comprising the steps of: (a) providing a print head comprising a same hue nozzle group for ejecting a plurality of same-hue inks having the substantially same hue and different in at least one of lightness and saturation, the same hue nozzle group including a plurality of same-ink nozzle sub groups arranged at mutually staggered positions in sub scan direction, each of the plurality of same ink nozzle sub-groups ejecting a same ink; and (b) forming ink dots with the plurality of same ink nozzle sub-groups during each main scan in a predetermined fast printing mode, such that each of the plurality of same ink nozzle sub groups ejects the same ink on mutually different main scan lines, due to the mutually staggered positions of the plurality of same-ink nozzle sub-groups.