Patent ID: 9114631
Filing Date: 2015-08-25
Classification: B41J

Abstract:
1. A printing apparatus comprising: a print head including a first array of a plurality of first ejection openings for ejecting a liquid of a predetermined color and being arrayed in a predetermined direction and a second array of a plurality of second ejection openings for ejecting the liquid of the predetermined color and being arrayed in the predetermined direction, the first and second ejection openings corresponding respectively to a plurality of first elements and a plurality of second elements for generating energy used to eject the liquid of the predetermined color, the first array and the second array being arranged in a direction crossing the predetermined direction, wherein relative movement between the print head and a print medium is effected in at least one scan direction crossing the predetermined direction; a pattern printing unit configured to cause the print head to print a pattern on a print medium by driving the first and second print elements at a predetermined relative drive timing between the first elements and the second elements during the relative movement between the print head and the print medium in a predetermined one scan direction; an obtaining unit configured to obtain information on relative deviation between a print position by the first elements and a print position by the second elements in the relative movement in the predetermined one scan direction, the information being based on the printed pattern; a setting unit configured to set a relative drive timing between the first elements and the second elements for the relative movement in the predetermined one scan direction based on the information obtained by the obtaining unit; and a driving control unit configured to drive the first elements and second elements according to the relative drive timing set by the setting unit in the relative movement in the predetermined one scan direction for printing on the print medium.