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. 04, 1997
Filed:
Dec. 19, 1996
Applicant:
Inventors:
Koji Morikoshi, Nagano, JP;
Yuji Tanaka, Nagano, JP;
Shuji Yonekubo, Nagano, JP;
Norihiko Kurashima, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347 70 ; 347 68 ;
Abstract
A piezoelectric vibration element is abutted against a vibration plate such that a central point C1 of the piezoelectric vibration element by is displaced by a distance .DELTA.d toward a nozzle opening from a central point C2 of a length L of an effective displacement region on vibration plate, whereby the displacement of the piezoelectric vibration during operation of the element is particularly efficiently transmitted to ink in the vicinity of the nozzle opening.