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. 23, 1996
Filed:
Jan. 26, 1994
Kuniaki Ochiai, Shizuoka, JP;
Shigeo Komakine, Shizuoka, JP;
Kabushiki Kaisha Tec, Shizuoka, JP;
Abstract
An ink jet print head comprises a piezoelectric plate (2) formed of a piezoelectric material, a base plate (1) formed of a nonconductive, nonelectrostrictive material having rigidity lower than that of the piezoelectric material and joined to the piezoelectric plate (2), electrodes (8) formed by depositing a metal by electroless plating over the entire bottom surfaces of a plurality of parallel grooves (3) formed through the piezoelectric plate (2) into the base plate (1) and the entire side surfaces of side walls (4) each consisting of an upper side wall (4a) formed in the piezoelectric plate (2) and lower side wall (4b) formed in the base plate (2) between the grooves (3), a top plate (10) joined to the upper surface of the piezoelectric plate (2) so as to close the upper open ends of the grooves (3) to form pressure chambers (14), and a nozzle plate (12) provided with ink jets (11) and joined to one end of the assembly of the base plate (1), the piezoelectric plate (2) and the top plate (10) so that the ink jets (11) correspond respectively to the pressure chambers (14).