Patent ID: 7594308
Filing Date: 2009-09-29
Classification: B41J,Y10T

Abstract:
1. A method for manufacturing a piezoelectric actuator for a liquid transporting apparatus, the piezoelectric actuator being provided on a surface of a channel unit having a pressure chamber, the piezoelectric actuator including a vibration plate covering the pressure chamber, a piezoelectric layer positioned on a side of the vibration plate which is opposite to the pressure chamber, and two electrodes positioned on both sides of the piezoelectric layer respectively to sandwich the piezoelectric layer therebetween, the method comprising: a vibration plate thickness measuring step for measuring a thickness of the vibration plate; a piezoelectric layer thickness determining step for determining a thickness of the piezoelectric layer based on an amount of deviation in the thickness of the vibration plate, measured in the vibration plate thickness measuring step, from a preset reference thickness of the vibration plate; and a piezoelectric layer forming step for providing the piezoelectric layer determined in the piezoelectric layer thickness determining step on the side of the vibration plate which is opposite to the pressure chamber.