Patent ID: 6231175
Filing Date: 2001-05-15
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; andprinting 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, anda 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, a ratio of an ejection amount of the liquid to that of the ink at a border region of the first image region and the second image region is smaller than a ratio of an ejection amount of the liquid to that of the ink at other regions, the border region being a region including at least a portion of the first image region adjacent the second image region.