Patent Number: 6,169,355

Title: Piezoelectric actuating element for an ink jet head and the like

Abstract: An ink jet head has body having a plurality of independent ink compartments each having an inlet orifice, an outlet orifice and a piezoelectric ink actuating element structurally associated with each of said independent ink compartments, said piezoelectric ink actuating element enabling said ink jet head to receive ink from an ink reservoir in fluid communications with said inlet orifice of each one of said plurality of independent ink compartments and then eject droplets of the ink onto a receiver to form an image. The piezoelectric actuating element includes a substantially planar piezoelectric transducer comprising a slab of piezoelectric material having a functionally gradient d-coefficient selected so that the slab changes geometry in response to an applied voltage which produces an electric field in the slab.

Inventors: Furlani; Edward P. (Lancaster, NY), Ghosh; Syamal K. (Rochester, NY), Chatterjee; Dilip K. (Rochester, NY)

Assignee: Eastman Kodak Company

International Classification: B41J 2/14 (20060101); B41J 2/045 (20060101); H01L 041/08 ()

Expiration Date: 01/02/2018