Patent ID: 8544157
Filing Date: 2013-10-01
Classification: B41J,Y10T

Abstract:
1. A method for producing a liquid transport apparatus including: a flow passage unit which includes a pressure chamber having a liquid inflow port and a liquid outflow port; and a piezoelectric actuator which includes a vibration plate joined to one surface of the flow passage unit to cover the pressure chamber therewith and a piezoelectric layer formed of a piezoelectric material and which selectively changes a volume of the pressure chamber, the method comprising: forming a recess, on a surface of the vibration plate on a side not facing the pressure chamber, wherein an area, of the vibration plate, overlapping the pressure chamber is divided into a first area and a second area by a dividing line, and the recess is formed only in the first area; forming the piezoelectric layer by depositing particles of the piezoelectric material on the surface of the vibration plate on which the recess is formed so that a thickness of a portion of the piezoelectric layer positioned at the recess is thinner than a thickness of another portion of the piezoelectric layer positioned at an area not formed with the recess; and forming a first electrode, on a surface of the piezoelectric layer on a side not facing the vibration plate, in an area overlapping the second area, wherein the dividing line extends in a predetermined direction to pass through a center of gravity of the pressure chamber.