Patent ID: 6925712
Filing Date: 2005-08-09
Classification: B41J,Y10T

Abstract:
1. A method of fabricating a liquid-jet head including a passage-forming substrate on which a pressure-generating chamber communicating with a nozzle orifice is formed, a plurality of piezoelectric elements provided on one side of the passage-forming substrate via a vibration plate, each of the piezoelectric elements comprising a lower electrode, a piezoelectric layer and an upper electrode, the method comprising the steps of: forming the vibration plate and the piezoelectric element on one side of the passage-forming substrate; forming the pressure-generating chamber by patterning from another side of the passage-forming substrate and forming a communicating path to communicate with one end in a longitudinal direction of the pressure-generating chamber; and forming a penetrated portion for supplying a liquid to the communicating path in a region of the vibration plate opposite to the communicating path by laser processing; and a laser beam is irradiated on the vibration plate in the step of forming the penetrated portion to effectuate processing such that dross in a size within one-fourth of a diameter of the nozzle orifice, being formed when the elastic film and the lower electrode film is cutting away, is adhered in the periphery of the penetrated portion.