Patent ID: 8449074

Claim:
An ink jet printing apparatus comprising: a printing head provided with a plurality of ejection opening arrays, each of which is formed by arranging ejection openings in a predetermined direction, wherein the plurality of ejection opening arrays includes a set of two first ejection opening arrays that are formed with ejection openings for ejecting a first ink, a set of two second ejection opening arrays which are located between the two first ejection opening arrays and formed with ejection openings for ejecting a second ink, a set of two third ejection opening arrays which are located between the two second ejection opening arrays and formed with ejection openings for ejecting a third ink, and a set of two fourth ejection opening arrays which are located between the two second ejection opening arrays and formed with ejection openings for ejecting a fourth ink; and a scanning unit to perform scanning of the printing head in forward and backward directions and to eject ink from ejection openings of the printing head during each of forward and backward scans, wherein the set of two third ejection opening arrays and the set of two fourth ejection opening arrays are arranged to be separated in a scanning direction from each other.