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. 22, 2013
Filed:
Oct. 05, 2007
Kazuhiro Hayakawa, Kawasaki, JP;
Kazuhiro Hayakawa, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides an ink jet print head having a channel shape that meets an intended purpose, and a method for manufacturing the ink jet print head. In the method for manufacturing the ink jet print head, an SIO SOI substrate is prepared which has a first silicon layer, a second silicon layer, and an insulating layer. A sacrifice layer is formed on the first monocrystal silicon layer. An etching stop layer is formed over the sacrifice layer. An energy generating element is formed on a surface of the SOI substrate. Etching is performed on the second silicon layer and the insulating layer to form an ink supply port. The supply port is formed by etching. The first silicon layer is etched to form a liquid channel. A part of the etching stop layer is removed to form an ejection port.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile