Patent ID: 7717545

Claim:
A liquid ejecting head comprising: a flow passage unit that includes: a liquid flow passage that at least includes a pressure chamber that communicates with a nozzle opening; and a diaphragm portion that is formed at a portion corresponding to the pressure chamber and that varies a volume of the pressure chamber; a vibrator unit that includes a piezoelectric vibrator that is bonded to the diaphragm portion, wherein the piezoelectric vibrator displaces the diaphragm portion; a case that has an accommodation chamber formed therein to accommodate the vibrator unit; and a reinforcing plate that has an insertion opening portion that is formed at a position corresponding to the diaphragm portion and through which a free end portion of the piezoelectric vibrator is insertable, wherein the reinforcing plate is interposed between the case and the flow passage unit, wherein the flow passage unit includes a plurality of the diaphragm portions that are provided in a column in correspondence with a plurality of the pressure chambers, and wherein the reinforcing plate includes a plurality of the insertion opening portions in correspondence with the diaphragm portions of the flow passage unit, and a crosspiece is formed between any adjacent insertion opening portions of the reinforcing plate.