Patent Number: 6,168,255

Title: Ink jet head method of production thereof, and jig for producing ink jet head

Abstract: The present invention relates to an ink jet head for changing the volume in a pressure chamber by deformation of a laminate piezoelectric device and for jetting ink filled in the pressure chamber from the front openings of the pressure chamber through nozzle holes, and particularly to an ink jet head which is characterized by an adhesive layer interposed between the front end surface of the main body forming the pressure chamber and a nozzle plate. The nozzle plate is bonded to the front end surface of the main body via an adhesive layer formed by an adhesive. The adhesive layer is divided into a nozzle seal layer encompassing the nozzle holes and the periphery of the front openings of the pressure chamber, an outer periphery hermetic layer formed annularly around the outer periphery of a region in which the main body and the nozzle plate oppose each other, and a reinforcing layer distributed in an intermediate portion between the nozzle seal layer and the outer periphery hermetic layer.

Inventors: Nagashima; Mitsuyoshi (Sayama, JP)

Assignee: Citizen Watch Co., Ltd.

International Classification: B41J 2/14 (20060101); B41J 2/16 (20060101); B41J 002/015 ()

Expiration Date: 01/02/2018