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:
Nov. 16, 1999
Filed:
Jun. 02, 1997
Seiichi Osawa, Tochigi, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
Pairs of laminated piezoelectric actuator (111) are arranged in plural rows on a base plate (110) to form a laminated piezoelectric actuator unit. A diaphragm (115) is bonded to the upper end surface of the laminated piezoelectric actuator unit, and a flow path plate (118) is bonded to the upper surface of the diaphragm (115). Here, a plurality of pressurizing chambers (116) and an ink flow path (117) are formed in the flow path plate (118) such that each pressurizing chamber (116) is disposed corresponding to each laminated piezoelectric actuator (111). Moreover, a nozzle plate (120) having nozzle holes (119) is connected to the upper surface of the flow path plate (118). Each laminated piezoelectric actuator (111) is deformed in the direction of thickness by applying voltage thereto for ejecting ink inside each pressurizing chamber (116) via each nozzle hole (119) in a direction perpendicular to the base plate (110).