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:
Feb. 12, 2019
Filed:
Feb. 16, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Jun Yamamuro, Yokohama, JP;
Kazuhiro Asai, Kawasaki, JP;
Keiji Matsumoto, Kawasaki, JP;
Koji Sasaki, Nagareyama, JP;
Masahisa Watanabe, Yokohama, JP;
Kunihito Uohashi, Yokohama, JP;
Seiichiro Yaginuma, Kawasaki, JP;
Ryotaro Murakami, Yokohama, JP;
Kenji Fujii, Yokohama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A process for producing a liquid discharge head including a substrate having a liquid supply path passing through from its first surface to second surface and an discharge port forming member having a discharge port communicating with the supply path through a flow path, the process including providing a first layer of photosensitive resin in a region covering an opening of the supply path in the first surface; forming a latent image of a pattern of the flow path in the first layer by exposure; providing a second layer of negative photosensitive resin on the first layer; curing a portion, opposing to the opening of the supply path in the first surface, of the second layer; forming a latent image of a pattern of the discharge port in the second layer by exposure; and developing latent images of patterns of the flow path and discharge port.