Patent ID: 8292416

Claim:
An inkjet printer head comprising: a nozzle plate in which plural nozzles for jetting ink are formed; a flow path plate in which flow paths for communicating with the plural nozzles are formed, each of the flow paths including a pressure chamber and a flow path resistance part having a smaller cross-sectional area than the pressure chamber, wherein piezoelectric elements are laminated on the flow path plate, each of the piezoelectric elements having an area that is less than or equal to a horizontal cross-sectional area of each of the flow paths; and a common liquid chamber configured to guide the ink from an ink supply opening to the pressure chamber, wherein the common liquid chamber is formed by a first common liquid chamber forming member and a second common liquid chamber forming member, the first common liquid chamber forming member forming a top part of the common liquid chamber, and the second common liquid chamber forming member forming a side surface and a bottom surface of a bottom part of the common liquid chamber by adhering to an outer wall of the first common liquid chamber forming member and to an ink jetting surface of the nozzle plate.