Patent ID: 7549223
Filing Date: 2009-06-23
Classification: B41J,Y10T

Abstract:
1. A method for manufacturing a liquid ejection head comprising a diaphragm which serves as portions of pressure chambers connected to nozzles through which liquid is ejected, and piezoelectric bodies which deform the diaphragm, the method comprising: an electrical wire forming step of removing at least a part of a silicon substrate, and forming electrical wires for supplying drive signals to drive the piezoelectric bodies, in sections where the silicon substrate has been removed; a piezoelectric body forming step of forming the piezoelectric bodies on sections where the silicon substrate has not been removed at least in the electrical wire forming step; a diaphragm forming step of forming the diaphragm on a side of the piezoelectric bodies opposite to the silicon substrate; a pressure chamber bonding step of bonding a separately formed nozzle plate including the pressure chambers and the nozzles, onto the silicon substrate on which the electrical wires, the piezoelectric bodies and the diaphragm have been formed respectively in the electrical wire forming step, the piezoelectric body forming step and the diaphragm forming step; and a common liquid chamber forming step of, removing the silicon substrate between the electrical wires while leaving silicon covering outer circumferences of the electrical wires, to form opening sections serving as a common liquid chamber which supplies the liquid to the pressure chambers after the pressure chamber bonding step, wherein the electrical wires are formed perpendicularly to the silicon substrate in the electrical wire forming step.