Patent ID: 7506946
Filing Date: 2009-03-24
Classification: B41J

Abstract:
1. An ink jet printing apparatus which executes printing by executing a scanning of a print medium, the apparatus comprising: a print head having a plurality of nozzle chips which are arranged in staggered positions and having a nozzle array in which a plurality of ink ejecting nozzles are arranged, the nozzle chips being arranged in different positions along a nozzle arranging direction; and print duty setting means for setting a print duty for a nozzle located at an end of the nozzle array of each of the plurality of the nozzle chips on the basis of an end deviation amount, which is a variation amount of a landing position of an ink droplet ejected from the end of the nozzle array, wherein the plurality of the nozzle chips includes a connecting portion in which a portion of an area in which the plurality of nozzles are arranged in one of the nozzle chips overlaps with a portion of an area in which the plurality of nozzles are arranged in an adjacent nozzle chip, and wherein the connecting portion corresponds to a plurality of nozzles located at the ends of the one nozzle chip and the adjacent nozzle chip.