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:
Sep. 25, 2012
Filed:
Mar. 23, 2010
Yoshiyuki Suzuki, Matsumoto, JP;
Yoshiyuki Suzuki, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A driving signal includes an ejection driving pulse having an expansion element and a constriction element, and a non-ejection driving pulse having an expansion element and a holding element and a constriction element. The length of time from the end of the constriction element in the ejection driving pulse to the beginning of the expansion element in the non-ejection driving pulse is taken as t; the lengths of time of the expansion element, holding element, and constriction element in the non-ejection driving pulse are taken as a, b, and c, respectively; and the inherent vibration cycle of the liquid within the pressurizing chamber is taken as Tc. t, a, b, and c are within the ranges defined by the following equations:/42  (1)(5/8)−≦(3/4)−  (2)  (3).