Patent ID: 7465038
Filing Date: 2008-12-16
Classification: B41J,Y10T

Abstract:
1. A liquid transporting apparatus comprising: a channel unit which includes a plurality of pressure chambers arranged along a flat plane and in which the pressure chambers are separated by partition wall sections; and a piezoelectric actuator which is arranged on one surface of the channel unit and which changes selectively a volume of the plurality of pressure chambers, wherein the piezoelectric actuator includes; a vibration plate which is adhered to the partition wall sections to cover the plurality of pressure chambers; a piezoelectric layer which is arranged on a side of the vibration plate opposite to the pressure chambers to cover all of the pressure chambers as viewed from a direction orthogonal to the flat plane; a plurality of individual electrodes which are arranged on one surface of the piezoelectric layer corresponding to the plurality of pressure chambers respectively; and a common electrode which is arranged on the other surface of the piezoelectric layer; and wherein a thickness of the piezoelectric layer or a thickness of an adhesive layer between the vibration plate and the partition wall sections is determined based on a parameter which is represented by A=((Tv+Tp)