Patent ID: 8454110
Filing Date: 2013-06-04
Classification: B41J

Abstract:
1. An ink jet printing apparatus for printing an image on a print medium by using a first print head ejecting a first ink and a second print head ejecting a second ink, wherein in the first print head are arranged a first printing element group and a second printing element group, in each of which a plurality of printing elements are arranged in a predetermined direction, so as to form an overlapping region and a non-overlapping region in the predetermined direction, the overlapping region corresponding to an area of the print medium printed by both of the first printing element group and the second printing element group and the non-overlapping region corresponding to an area of the print medium printed by either the first printing element group or the second printing element group, the ink jet printing apparatus comprising: an ink amount setting unit configured to set amounts of the first ink and the second ink applied to a unit area on the print medium based on image data so that an amount of the first ink applied to the unit area by the overlapping region is less than an amount of the first ink applied to the unit area by the non-overlapping region and an amount of the second ink applied to the unit area that is printed by the overlapping region of the first print head is not less than an amount of the second ink applied to the unit area that is printed by the non-overlapping region of the first print head; and a control unit to control ejection of the first ink from the first print head and the second ink from the second print head according to the amounts set by the ink amount setting unit.