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. 26, 2002
Filed:
Aug. 03, 2000
Applicant:
Inventors:
Seiichi Kato, Miyagi, JP;
Kouichi Ohtaka, Miyagi, JP;
Makoto Tanaka, Kanagawa, JP;
Eiji Mochizuki, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/04 ;
U.S. Cl.
CPC ...
B41J 2/04 ;
Abstract
An ink jet head that can be easily connected to an external circuit is provided without an increase in the number of production procedures. Diaphragms and a diaphragm external electrode having the same thickness as the diaphragms are formed on a silicon substrate that is a first substrate located on the same plane as the diaphragms. The diaphragm external electrode is located within 2 &mgr;m from the individual external electrodes of a plurality of electrodes on a second substrate.