Patent ID: 6902262

Claim:
A laminated ink jet recording head comprising: a flow path unit comprising: a nozzle plate formed with a plurality of nozzles; a reservoir chamber forming board having at least one reservoir, and nozzle communication holes communicating with the nozzles, the nozzle plate being fixedly laminated on a surface of the reservoir chamber forming board; and an ink supply inlet forming board which is fixedly laminated on another surface of the reservoir chamber forming board and which has a reservoir inlet and first and second communication holes; an actuator unit comprising: a pressure chamber forming board formed with a plurality of pressure producing chambers partitioned by side walls; a vibration plate fixed to a surface of the pressure chamber forming board; and piezoelectric vibration elements formed on a surface of the vibration plate to correspond to the pressure producing chambers; and a head fixing unit which has a recess for accommodating the actuator unit and the flow path unit therein, and which is formed with a flow path for receiving supply of ink from an exterior, wherein the flow path unit is fixed to the head fixing unit so that the actuator unit and the flow path unit are accommodated in the recess and that the reservoir inlet of the flow path unit communicates directly with the flow path of the head fixing unit.