Patent ID: 6336715
Filing Date: 2002-01-08
Classification: B41J

Abstract:
An ink jet head comprising:a first member made of a non-piezoelectric material, said first member having a surface on which a plurality of concave portions and a plurality of convex portions are alternately formed in a predetermined direction; a flexible member which has a single, continuous first surface and a second surface opposite to said first surface, said first surface being in contact with said convex portions of said first member; and a second member having a base and a plurality of piezoelectric members provided on said base, said piezoelectric members corresponding to said concave portions with respect to said predetermined direction, respectively, each of the piezoelectric members having a portion which is in fixed contact with said base over a two dimensional area that exceeds a line contact and each of the piezoelectric members confronts a respective one of said concave portions through said flexible member, wherein said flexible member is bent into said concave portions by contact with said convex portions and said piezoelectric members in a condition when no electrical field is applied to said piezoelectric members.