Patent ID: 8052248

Claim:
A liquid ejection head comprising: a flow path member having provided therein plural liquid chambers respectively in communication with plural nozzles that eject a liquid droplet, the plural nozzles being arranged in nozzle rows in a nozzle arrangement direction, each nozzle row including three or more nozzles arranged side by side in the nozzle arrangement direction with a same nozzle pitch between each pair of adjacent nozzles in the nozzle arrangement direction; a vibration plate member that forms at least a part of wall surfaces of the liquid chambers; plural piezoelectric element columns that deform the vibration plate member at positions corresponding to the liquid chambers; a supporting column that corresponds to a partition wall sandwiched between the liquid chambers; and a base member on which the plural piezoelectric element columns and the supporting column are arranged; wherein the supporting column is arranged so as to be sandwiched between a group of two or more of the consecutive piezoelectric element columns in the nozzle arrangement direction in which said each pair of adjacent nozzles in the nozzle arrangement direction has the same nozzle pitch therebetween.