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:
Oct. 19, 2010
Filed:
Sep. 18, 2008
Tsutomu Yokouchi, Kanagawa-ken, JP;
Tsutomu Yokouchi, Kanagawa-ken, JP;
FujiFilm Corporation, Tokyo, JP;
Abstract
A method of manufacturing a flow channel substrate for a liquid ejection head, includes at least the steps of: forming, on a substrate, a sacrificial layer which is made of a dissolvable resin and has a liquid flow channel shape; forming a lyophobic film on the substrate and the sacrificial layer; applying, by heat treatment, a rounded shape to a corner section of the sacrificial layer on a side which is not in contact with the substrate; removing the lyophobic film after the heat treatment; forming a coating resin layer on the substrate and the sacrificial layer after the lyophobic film is removed; patterning the coating resin layer; and dissolving the sacrificial layer.