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:
Jul. 05, 2011
Filed:
Nov. 16, 2007
Shoji Shiba, Kawasaki, JP;
Akihiko Okano, Kawasaki, JP;
Yoshikazu Saito, Kawasaki, JP;
Kazuhiro Asai, Kawasaki, JP;
Tamaki Sato, Kawasaki, JP;
Takumi Suzuki, Yokohama, JP;
Masahiko Kubota, Tokyo, JP;
Maki Kato, Kawasaki, JP;
Hiroe Ishikura, Kawasaki, JP;
Shinsuke Tsuji, Kawasaki, JP;
Shoji Shiba, Kawasaki, JP;
Akihiko Okano, Kawasaki, JP;
Yoshikazu Saito, Kawasaki, JP;
Kazuhiro Asai, Kawasaki, JP;
Tamaki Sato, Kawasaki, JP;
Takumi Suzuki, Yokohama, JP;
Masahiko Kubota, Tokyo, JP;
Maki Kato, Kawasaki, JP;
Hiroe Ishikura, Kawasaki, JP;
Shinsuke Tsuji, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for manufacturing a liquid discharge head including an energy generating element, which generates energy utilized for discharging a liquid, and a discharge portion provided at a position facing the energy generating element and having a discharge port for discharging the liquid is provided. This method includes the steps of forming a negative photosensitive resin layer used for a member that forms the discharge port on the substrate, and exposing the layer to an i-line to form the discharge portion that is tapered in a direction from the substrate to the discharge port, wherein the layer has an absorbance per 1 μm thickness of about 0.02 to about 0.07 for light used for the exposure.