Patent ID: 7874639

Claim:
An ink jet recording head comprising: at least three nozzle array groups, wherein each of said nozzle array group include: a first nozzle array including a plurality of ejection outlets for ejecting ink, and a second nozzle array including a plurality of ejection outlets for ejecting the ink, said second nozzle array being disposed adjacent to said first nozzle array with an ink supply port for supplying the ink interposed therebetween, wherein an opening area of the ejection outlets of said second nozzle array is smaller than an opening area of the ejection outlets of said first nozzle array, wherein said nozzle array groups eject three different kinds of inks, respectively, when said ink jet recording head moves relative to a recording material, wherein nozzle arrays of adjacent nozzle array groups of said at least three nozzle array group are arranged in an order of said first nozzle array of a first nozzle array group of said adjacent nozzle array groups, said second nozzle array of said first nozzle array group, said second nozzle array of a second nozzle array group of said adjacent nozzle array groups, and said first nozzle array of said second nozzle array, wherein a third nozzle array is provided in each of said adjacent nozzle array groups, each said third nozzle array including a plurality of ejection outlets for ejecting the ink, wherein an opening area of the ejection outlets of said third nozzle array is smaller than an opening area of the ejection outlets of said second nozzle array, said third nozzle array being disposed at a same side as said second nozzle array with respect to said ink supply port, and wherein a third nozzle array group of said at least three nozzle array groups which is not one of said adjacent nozzle array groups is supplied with the ink having a highest lightness among the three kinds of inks.