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:
Dec. 03, 2002
Filed:
Jun. 09, 1997
Kiyomitsu Kudo, Yokohama, JP;
Yutaka Koizumi, Yokohama, JP;
Sadayuki Sugama, Tsukuba, JP;
Kiyomi Aono, Kawasaki, JP;
Tsutomu Abe, Isehara, JP;
Hiroyuki Ishinaga, Tokyo, JP;
Toshio Kashino, Chigasaki, JP;
Seiichiro Karita, Yokohama, JP;
Takeshi Okazaki, Sagamihara, JP;
Kouichi Omata, Kawasaki, JP;
Masahiko Kubota, Tokyo, JP;
Hiroki Tajima, Yokohama, JP;
Aya Yoshihira, Yokohama, JP;
Yoshie Asakawa, Hotaka-machi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid discharging head includes a discharge port for discharging liquid, a liquid passage communicated with the discharge port, a bubble generating area for generating a bubble in the liquid in the liquid passage, the bubble generating area including a heater for heating the liquid in the liquid passage, and a movable member disposed in a confronting relation to the bubble generating area in the liquid passage and adapted to be shifted by pressure caused by generating the bubble at the bubble generating area to direct the pressure toward the discharge port and to be returned to its initial position by negative pressure due to contraction of the bubble, and wherein resistance of the movable member against the liquid in the liquid passage when it is shifted is smaller than that when it is returned.