Patent ID: 6467892
Filing Date: 2002-10-22
Classification: B41J

Abstract:
An ink-jet printing apparatus comprising:primary scanning means for scanning a printing head relatively across a printing medium in a predetermined direction, the printing head for ejecting an ink and a liquid making a coloring agent contained in the ink insoluble through respective ejection openings of the printing head; feeding means for feeding the printing medium in a sub-scanning direction different from the predetermined direction by a predetermined amount; and printing control means for controlling printing of the printing head, wherein an image having a width greater than the predetermined amount in the sub-scanning direction is formed on the printing medium by alternately repeating scanning by said primary scanning means and feeding by said feeding means, a second image region in a second primary scanning by said primary scanning means is contiguous to a first image region formed beforehand in a first primary scanning by said primary scanning means, and the ink and the liquid are ejected at a border region of the first image region and the second image region so that a boundary of the ink substantially differs from that of the liquid, the border region being a region including at least a portion of the first image region adjacent the second image region.