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:
Apr. 12, 2016
Filed:
Oct. 28, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Kunihito Uohashi, Yokohama, JP;
Kenji Fujii, Yokohama, JP;
Kazuhiro Asai, Kawasaki, JP;
Keiji Matsumoto, Kawasaki, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A method of manufacturing a substrate for a liquid ejection head including an ejection port forming member which has formed therein ejection ports, includes the steps of: forming a first layer by using a first layer forming member; forming a second layer on the first layer by using a second layer forming member; and hardening a partial region of each of the first layer and the second layer and removing a region different from the partial region so as to form the ejection ports, resulting in that the first layer and the second layer constitute the ejection port forming member, and a member containing a solvent to dissolve the first layer forming member and a photo-acid-generating agent having an acid strength weaker than an acid strength of the photo-acid-generating agent contained in the first layer forming member is used as the second layer forming member.