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:
Aug. 15, 2000
Filed:
Mar. 14, 1997
Applicant:
Inventors:
Takuji Torii, Ibaraki, JP;
Nobuhiro Noto, Ibaraki, JP;
Kazuaki Akimoto, Ibaraki, JP;
Shigenori Suematsu, Ibaraki, JP;
Yoshitaka Akiyama, Ibaraki, JP;
Ryoji Yabuki, Ibaraki, JP;
Assignee:
Hitachi Koki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347 10 ;
Abstract
A piezoelectric element is driven by a predetermined pulse width in the range of 60 to 100% of the Helmholtz resonance vibration period of an ink vibration system comprising an orifice, a pressurizing chamber, a restrictor, the piezoelectric element, and an elastic material.