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:
Dec. 10, 2019
Filed:
Aug. 04, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Kunihito Uohashi, Yokohama, JP;
Shingo Nagata, Tokyo, JP;
Kenji Fujii, Yokohama, JP;
Jun Yamamuro, Yokohama, JP;
Koji Sasaki, Nagareyama, JP;
Keiji Matsumoto, Fukushima, JP;
Seiichiro Yaginuma, Kawasaki, JP;
Ryotaro Murakami, Yokohama, JP;
Tomohiko Nakano, Kawasaki, JP;
Masataka Nagai, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for manufacturing a liquid ejection head including providing a negative first photosensitive resin layer on the substrate, forming a pattern of the flow path by selectively exposing the first photosensitive resin layer, providing a negative second photosensitive resin layer on the first photosensitive resin layer, providing a negative third photosensitive resin layer on the second photosensitive resin layer, forming a pattern of the ejection port by selectively exposing the second and third photosensitive resin layers, developing the first, second, and third photosensitive resin layers, irradiating an activation energy line on at least the third photosensitive resin layer after the developing, and heat curing the first, second, and third photosensitive resin layers after the irradiating of the activation energy line.