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:
Jan. 31, 2012
Filed:
Jan. 23, 2009
Masumi Ikeda, Kawasaki, JP;
Etsuko Hino, Tokyo, JP;
Isamu Horiuchi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of manufacturing a liquid discharge head including a flow path forming member configured to form a flow path communicating with a discharge port to discharge liquid, includes, providing a first layer which includes a photosensitive resin and a light absorption agent on a substrate, and providing a second layer which includes a positive photosensitive resin but substantially does not include the light absorption agent on the substrate, so as to coat the first layer, forming a pattern having a shape corresponding to the flow path by performing a patterning process, and providing a layer which becomes the flow path forming member on the substrate, so as to coat the pattern. The method further includes forming the discharge port by performing a patterning process including exposure of the layer that becomes the flow path forming member, and forming the flow path by removing the pattern.