Patent ID: 7771012

Claim:
A liquid ejecting head comprising: a plurality of nozzle groups each including a plurality of nozzle openings; and a plurality of pressure generating units that cause liquid to be ejected from the plurality of nozzle openings, where each of the plurality of pressure generating units includes a piezoelectric vibrator; wherein a plurality of recessed portions are formed at a surface of a nozzle forming member which is adjacent to the pressure generating units, the recessed portions each having a thickness smaller than a thickness of thick portions of the nozzle forming member, such that the recessed portions do not extend to a nozzle surface of the nozzle forming member where the nozzle openings are formed, the nozzle openings being formed so as to communicate with the recessed portions, wherein a set of at least two of the plurality of nozzle openings included in each single nozzle group defines a nozzle set, the nozzle set being arranged to correspond to each of the pressure generating units, wherein a single pressure generating unit causes liquid to be ejected from the at least two of the plurality of nozzle openings in the single nozzle group, and wherein the nozzle groups each have a plurality of nozzle sets in an array, the nozzle sets of one of the nozzle groups being relatively shifted from the nozzle sets of another one of the nozzle groups in a nozzle-set-array direction.