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:
Nov. 01, 2011
Filed:
Feb. 27, 2009
Kenji Fujii, Kawasaki, JP;
Yoshinori Tagawa, Yokohama, JP;
Hiroyuki Murayama, Kawasaki, JP;
Taichi Yonemoto, Isehara, JP;
Mitsunori Toshishige, Kawasaki, JP;
Keiji Watanabe, Kawasaki, JP;
Kenji Fujii, Kawasaki, JP;
Yoshinori Tagawa, Yokohama, JP;
Hiroyuki Murayama, Kawasaki, JP;
Taichi Yonemoto, Isehara, JP;
Mitsunori Toshishige, Kawasaki, JP;
Keiji Watanabe, Kawasaki, JP;
Canon Kabushiki Kaisha, Toyko, JP;
Abstract
An ink jet recording head includes an ejection outlet for ejecting ink; an energy generating element, provided on a silicon substrate, for generating energy for ejecting the ink from the ejection outlet; an ink flow passage, provided correspondingly to the energy generating element, communicating with the ejection outlet; a through hole passing through the silicon substrate; and an ink supply port for supplying the ink supplied into the through hole to the ink flow passage. The ink supply port is formed with an extended member which contacts a bottom of a flow passage wall constituting the ink flow passage and extends into an opening of the through hole.