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:
Mar. 13, 2012
Filed:
Jun. 18, 2009
Hideo Fukazawa, Chigasaki, JP;
Toshiro Sugiyama, Yokohama, JP;
Shigeru Watanabe, Yokohama, JP;
Kouhei Tokuda, Yokohama, JP;
Tsuyoshi Mikoshiba, Yokohama, JP;
Takeshi Kouda, Kawasaki, JP;
Masaya Uetsuki, Yokohama, JP;
Toshimitsu Danzuka, Tokyo, JP;
Hiroaki Shirakawa, Kawasaki, JP;
Masataka Kato, Yokohama, JP;
Hideo Fukazawa, Chigasaki, JP;
Toshiro Sugiyama, Yokohama, JP;
Shigeru Watanabe, Yokohama, JP;
Kouhei Tokuda, Yokohama, JP;
Tsuyoshi Mikoshiba, Yokohama, JP;
Takeshi Kouda, Kawasaki, JP;
Masaya Uetsuki, Yokohama, JP;
Toshimitsu Danzuka, Tokyo, JP;
Hiroaki Shirakawa, Kawasaki, JP;
Masataka Kato, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A recording head includes ejection ports that eject ink, a first liquid chamber for supplying ink to the ejection ports, a second liquid chamber for supplying ink to the first liquid chamber, a gas reservoir disposed in the upper part of the first liquid chamber and collecting gas, a first outlet through which fluid is discharged out of the gas reservoir, and a pump chamber into which fluid is moved through the first outlet out of the first liquid chamber by producing a pressure difference from the first liquid chamber.