Patent ID: 7381341
Filing Date: 2008-06-03
Classification: B41J,Y10T

Abstract:
1. A method of manufacturing a liquid jet head including a passage-forming substrate which is made of a single crystal silicon substrate and in which at least one pressure generating chamber communicating with at least one nozzle orifice is defined, and at least one piezoelectric element which is provided on the passage-forming substrate through a vibration plate and made of 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 surface of the passage-forming substrate; thermally adhering with adhesive onto the passage-forming substrate a reinforcing substrate for reinforcing the rigidity of the passage-forming substrate; processing the passage-forming substrate to have a predetermined thickness; depositing an insulation film on the other surface of the passage-forming substrate at lower temperature than that for adhering the passage-forming substrate and the reinforcing substrate together, and patterning the insulation film into a predetermined shape; and etching the passage-forming substrate using the patterned insulation film as a mask to form the pressure generating chamber.