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:
Nov. 05, 2002
Filed:
Jul. 30, 2001
Hiroyuki Sugiyama, Kanagawa, JP;
Masami Kasamoto, Kanagawa, JP;
Hiroyuki Ishinaga, Tokyo, JP;
Teruo Ozaki, Kanagawa, JP;
Yoshinori Misumi, Tokyo, JP;
Yoichi Taneya, Kanagawa, JP;
Junichiro Iri, Kanagawa, JP;
Hiroaki Mihara, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a liquid discharge head having a movable member displaced by generation of a bubble, endurance of stepped portions of the movable member and of root portions of movable parts of the movable member is enhanced and flexure deformation of the movable member is prevented to enhance endurance of the member. A pressing member for covering stepped portions of a movable member and root portions of branched movable parts is provided within a flow path. A part of the pressing member is tapered and extends to a downstream side (toward a discharge port) to be spaced apart from the movable member, thereby forming a flexure regulating portion opposed to and spaced apart from an intermediate portion of the movable member. The pressing member and the flexure regulating portion suppress excessive deformation of the movable member.