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:
Oct. 04, 2011
Filed:
Sep. 04, 2007
Hirokazu Komuro, Yokohama, JP;
Makoto Kurotobi, Yokohama, JP;
Tadashi Atoji, Yokohama, JP;
Takehito Okabe, Atsugi, JP;
Hirokazu Komuro, Yokohama, JP;
Makoto Kurotobi, Yokohama, JP;
Tadashi Atoji, Yokohama, JP;
Takehito Okabe, Atsugi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of manufacturing a liquid ejection head and a liquid ejection head capable of preventing corrosion of electrodes are provided. The method of manufacturing a liquid ejection head includes: a step of forming porous silicon areas in portions of a silicon substrate where the liquid paths are to be formed; a step of forming in layers in the porous silicon areas a protective layer, a heating resistor layer, an electrode layer and a heat accumulation layer; a step of forming ink ejection openings in the silicon substrate; and a step of removing the porous silicon areas.