Patent ID: 8007067
Filing Date: 2011-08-30
Classification: B41J

Abstract:
1. A method for positioning of an ink jet print head comprising a plurality of nozzles which are arranged in a first nozzle line and a second nozzle line and from which ink can be ejected, nozzles located on ends of the first and second nozzle lines overlapping each other in a direction crossing an arranging direction of the nozzles, wherein relative positions of the first and second nozzle lines are adjusted depending on an amount of relative deviation between impacting positions at which the ink ejected from the nozzles in the first and second nozzle lines impact an area on a print medium, the area corresponding to a position at which the ends of the first and second nozzle lines are located, the amount of relative deviation between the impacting positions being measured by ejecting ink from the nozzles in the first and second nozzle lines to the print medium.