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:
Mar. 11, 2003
Filed:
Jul. 27, 2001
Teruo Ozaki, Kanagawa, JP;
Masami Ikeda, Tokyo, JP;
Masami Kasamoto, Kanagawa, JP;
Ichiro Saito, Kanagawa, JP;
Hiroyuki Ishinaga, Tokyo, JP;
Shuji Koyama, Kanagawa, JP;
Yoshinori Misumi, Tokyo, JP;
Junichiro Iri, Kanagawa, JP;
Muga Mochizuki, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides an ink jet head substrate comprising a heat generating resistance member forming a heat generating portion, an electrode wiring electrically connected to the heat generating resistance member, and an anti-cavitation film provided on the heat generating resistance member and the electrode wiring via an insulation protection layer, and wherein the anti-cavitation film is formed from different materials with more than two layers.