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:
Jan. 17, 2012
Filed:
Mar. 19, 2008
Shuichi Murakami, Kawasaki, JP;
Akihiro Yamanaka, Yokohama, JP;
Yasunori Takei, Tokyo, JP;
Ryoji Oohashi, Yokohama, JP;
Shuichi Murakami, Kawasaki, JP;
Akihiro Yamanaka, Yokohama, JP;
Yasunori Takei, Tokyo, JP;
Ryoji Oohashi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A print head, which ejects ink by using a method whereby a bubble generated by a heat generating element communicates with the air, and for which the occurrence of cavitation is deterred and the durability is improved, is provided. According to the print head, a bubble grows until the maximum volume is attained, and then, at a volume reduction step, communicates with the air. As a result, a liquid in a bubble generation chamber is ejected. An ejection port and the heat generating element are arranged so that the center of the ejection port is shifted away from the center of the heat generating element in a direction leading from an ink supply port to the ejection port.