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. 18, 2008
Filed:
May. 02, 2005
Hirokazu Komuro, Yokohama, JP;
Teruo Ozaki, Yokohama, JP;
Shuji Koyama, Kawasaki, JP;
Kousuke Kubo, Yokohama, JP;
Makoto Terui, Yokohama, JP;
Kazuhiro Hayakawa, Isehara, JP;
Ryoji Kanri, Isehara, JP;
Masataka Kato, Kanagawa, JP;
Hirokazu Komuro, Yokohama, JP;
Teruo Ozaki, Yokohama, JP;
Shuji Koyama, Kawasaki, JP;
Kousuke Kubo, Yokohama, JP;
Makoto Terui, Yokohama, JP;
Kazuhiro Hayakawa, Isehara, JP;
Ryoji Kanri, Isehara, JP;
Masataka Kato, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In order to form a more homogenous heat generating resistive layer, the present invention provides a method of manufacturing a substrate for an ink jet recording head having a support which has an insulative layer on its surface, a pair of electrode layers disposed on the surface of the support, and a heat generating resistive layer which continuously covers the pair of electrode layers and a section between the pair of electrode layers. The method includes the step of forming an electrode layer on the support and the step of forming the pair of electrode layers by etching the electrode layer. In the step of forming the pair of electrode layers by etching the electrode layer, by etching a surface portion of the insulative layer positioned between the pair of insulative layers, a recess is formed in the surface portion of the insulative layer.