Patent ID: 6513916
Filing Date: 2003-02-04
Classification: B41J

Abstract:
An ink jet head, comprising:a base member at least partially formed of a piezoelectric material, including a plurality of first grooves separated by walls and arranged in parallel in a surface of said piezoelectric material, and including electrodes on parts of the walls of said respective first grooves; a cover member provided on said base member to cover the plurality of first grooves thereby forming ink channels to be a pressure chamber; a nozzle communicating with an ink channel; and a plurality of electrode connecting portions formed on a surface of said base member for connecting said electrodes to an external portion, wherein said ink jet head applies a driving voltage to said electrodes to cause shear deformation of said walls so as to cause pressure vibration to said ink channels to allow said nozzle to eject ink, said plurality of electrode connecting portions are electrically isolated by second grooves formed in the surface of said base member, and surfaces of said electrode connecting portions are substantially flush with upper surfaces of said walls.