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:
Jun. 12, 2018
Filed:
Jul. 25, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Seiichiro Yaginuma, Kawasaki, JP;
Jun Yamamuro, Yokohama, JP;
Kazuhiro Asai, Kawasaki, JP;
Keiji Matsumoto, Fukushima, JP;
Koji Sasaki, Nagareyama, JP;
Masahisa Watanabe, Yokohama, JP;
Kunihito Uohashi, Yokohama, JP;
Ryotaro Murakami, Yokohama, JP;
Tomohiko Nakano, Kawasaki, JP;
Keiji Edamatsu, Kawasaki, JP;
Haruka Nakada, Kawasaki, JP;
Kenji Fujii, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head includes a liquid ejection board and a liquid ejection head component disposed on the liquid ejection board. The liquid ejection board includes a substrate, an energy generating device on the substrate, a channel defining member defining a liquid channel and having a liquid ejection opening in communication with the liquid channel, a liquid supply passage in communication with the liquid channel, a liquid supply opening in communication with the liquid supply passage and having a smaller opening cross-sectional area taken in a direction perpendicular to a flow direction of a liquid than the liquid supply passage, and an opening in communication with the liquid channel. The liquid channel allows a liquid to be in contact with the energy generating device. The liquid ejection opening allows a liquid to be ejected therethrough. The liquid ejection head component closes at least a portion of the opening.