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. 17, 2001
Filed:
Jul. 14, 2000
Aya Yoshihira, Yokohama, JP;
Kouji Yamakawa, Yokohama, JP;
Tsuyoshi Orikasa, Musashimurayama, JP;
Hiroyuki Ishinaga, Tokyo, JP;
Toshio Kashino, Chigasaki, JP;
Hiroyuki Kigami, Yokohama, JP;
Kimiyuki Hayasaki, Yokohama, JP;
Hisashi Fukai, Yokohama, JP;
Kiyomitsu Kudo, Kawasaki, JP;
Takayuki Ono, Kawasaki, JP;
Yoshie Asakawa, Nagano-ken, JP;
Masayoshi Ohkawa, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head includes an ejection outlet for ejecting liquid; a plurality of liquid flow paths; a bubble generating region for generating a bubble; a movable member disposed faced to the bubble generating region and movable between a first position and a second position which is farther from the bubble generating region than the first position; wherein the movable member moves from the first position to the second position by pressure produced by the generation of the bubble to permit expansion of the bubble more in a downstream side closer to the ejection outlet than in an upstream side. In addition, a first common liquid chamber having a height, measured in a direction perpendicular to a plane including the movable member at rest, which is larger than that of the liquid flow paths, wherein the movable member has a fulcrum in the first common liquid chamber and a free end in the liquid flow paths.