Patent ID: 7176600
Filing Date: 2007-02-13
Classification: B41J,H01L,Y10T

Abstract:
1. A circuit for providing power to a plurality of piezoelectric diaphragm structures comprising: a plurality of piezoelectric diaphragm structures, each piezoelectric diaphragm structure having a first side multi-electrode formed on a first side of each of the piezoelectric diaphragm structures and a second side electrode in operational contact with a piezoelectric material of the piezoelectric diaphragm structures; and a switching system including a first connector arrangement for a first power source, for application of power to the first side multi-electrode, the first power source including (i) a first high voltage power supply configured to apply power to a first portion of the first multi-electrode and (ii) a second high power supply configured to apply power to a second portion of the first multi-electrode, and a second connector arrangement for a second power source, for application of power to the second side electrode, wherein in a first state power appropriate to perform a poling operation of the piezoelectric material is available for selective application to both the first multi-electrode and the second electrode and in a second state power appropriate to activate the piezoelectric material to cause operational movement of the poled piezoelectric material is available for selective application to both the first multi-electrode and the second electrode, wherein the plurality of piezoelectric diaphragm structures and the switching system of the circuit are part of a printhead for ejecting fluid.