Patent ID: 7344219
Filing Date: 2008-03-18
Classification: B41J

Abstract:
1. An ink jet printing apparatus for printing an image on a printing medium by using a printing head having a nozzle row in which a plurality of nozzles that can eject ink are arranged to repeat a scanning and a transportation operation, the scanning being performed for causing the nozzle to eject ink while moving the printing head in a main scanning direction and the transportation operation being performed for transporting the printing medium in a sub scanning direction crossing the main scanning direction, the ink jet printing apparatus comprising: setting means for setting a number by which the nozzle row is divided for dividing a plurality of nozzles constituting the nozzle row into a plurality of divided nozzle groups in accordance with a displacement amount in the main scanning direction between a first printed image printed, during a first scanning, by a first nozzle group including a plurality of nozzles positioned at one end side of the nozzle row and a second printed image printed, during a second scanning different from the first scanning, by a second nozzle group including a plurality of nozzles positioned at the other end side of the nozzle row; and correcting means for correcting a printing position on the basis of the divided nozzle groups divided in accordance with the number set by said setting means.