The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2001
Filed:
Dec. 10, 1997
Mitsuyoshi Nagashima, Sayama, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
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.