Patent ID: 8177328
Filing Date: 2012-05-15
Classification: B41J

Abstract:
1. An ink jet printing apparatus which prints an image by causing a printing head to scan a printing medium in a first direction and in a second direction opposite to the first direction, the printing head having a plurality of nozzles capable of ejecting ink of the same color, the plurality of nozzles being arranged in a first nozzle array extending in a direction intersecting the first and second directions and arranged in a second nozzle array extending in parallel with the first nozzle array, the ink jet printing apparatus comprising: a controller which allows, when printing in a predetermined region on the printing medium is performed by scanning the printing head an even number of times, the ink to be ejected from nozzles in one of the first nozzle array and the second nozzle array in scanning in the first direction and also allows the ink to be ejected from nozzles in the other one of the first nozzle array and the second nozzle array in scanning in the second direction, and allows, when printing in a predetermined region on the printing medium is performed by scanning the printing head an odd number of times, the ink to be ejected from the nozzles in both of the first and second nozzle arrays in the scanning in the first direction and the second direction.