Patent ID: 7517064

Claim:
A liquid transporting apparatus comprising: a channel unit which is arranged along a plane, and in which a channel including a plurality of pressure chambers each having a liquid inflow port and a liquid outflow port is formed; and a piezoelectric actuator which is arranged on one surface of the channel unit, and which changes volume of the pressure chambers to apply a pressure to a liquid inside the pressure chambers, the piezoelectric actuator including: a vibration plate which covers the pressure chambers, a piezoelectric layer which is arranged on a side of the vibration plate opposite to the pressure chambers, a plurality of individual electrodes each of which is arranged on one surface of the piezoelectric layer at an area overlapping with an edge portion of one of the pressure chambers as viewed in a direction orthogonal to the plane, the edge portion being an area other than a central portion of one of the pressure chambers, and a common electrode which is arranged on the other surface of the piezoelectric layer; wherein recesses are formed on a surface of the vibration plate on a side of the pressure chambers at areas each of which overlaps with the central portion of one of the pressure chambers as viewed in the direction orthogonal to the plane.