Patent ID: 8231203
Filing Date: 2012-07-31
Classification: B41J

Abstract:
1. An ink jet print head having a plurality of ejection opening arrays which are parallelly arranged in a predetermined direction, the ink jet print head comprising: a yellow ink ejection opening array in which a plurality of ejection openings for ejecting yellow ink are arranged; first and second magenta ink ejection opening arrays in which a plurality of ejection openings for ejecting magenta ink are arranged; first and second cyan ink ejection opening arrays in which a plurality of ejection openings for ejecting cyan ink are arranged; first and second gray ink ejection opening arrays in which a plurality of ejection openings for ejecting gray ink are arranged; and a black ink ejection opening array in which a plurality of ejection openings for ejecting black ink are arranged, wherein the first gray ink ejection opening array is arranged on one side and the second gray ink ejection opening array is arranged on the other side of the yellow ink ejection opening array, with respect to the predetermined direction, wherein a first opening array set including the first magenta ink ejection opening array and the first cyan ink ejection opening array is arranged on one side of the first gray ink ejection opening array, and a second opening array set including the second magenta ink ejection opening array and the second cyan ink ejection opening array is arranged on the other side of the second gray ink ejection opening array, and wherein the black ink ejection opening array is arranged on one side of the first opening array set and/or is arranged on the other side of the second opening array set.