Patent ID: 7296878

Claim:
A liquid ejection head comprising a nozzle surface in which a plurality of nozzles for ejecting droplets of liquid toward an ejection receiving medium are arranged two-dimensionally in conditions satisfying the following relationships: L _pitch= L×k /( n− 1), where: k≦m+ 1; L_pitch is a distance in a first direction on the nozzle surface between a pair of the nozzles that eject the droplets to form dots that are aligned adjacently in a second direction on the ejection receiving medium, the first direction being a direction in which the ejection receiving medium is moved relatively with respect to the liquid ejection head, the second direction being substantially perpendicular to the first direction; L is a maximum distance between the nozzles in the first direction on the nozzle surface; n is a number of the nozzles in the first direction on the nozzle surface, and is an integer not less than 4; m is a number of skipped nozzles indicating a number of nozzles disposed in the first direction within the distance L_pitch between the pair of the nozzles in the first direction and is an integer satisfying 1≦m≦n/2; and k is a positive integer.