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. 06, 2012
Filed:
Jan. 19, 2011
Noriyasu Ozaki, Atsugi, JP;
Junichi Kobayashi, Ayase, JP;
Shuji Koyama, Kawasaki, JP;
Tadanobu Nagami, Yamato, JP;
Yoshinori Tagawa, Yokohama, JP;
Kenji Fujii, Kawasaki, JP;
Hiroyuki Murayama, Kawasaki, JP;
Masaki Ohsumi, Yokosuka, JP;
Jun Yamamuro, Yokohama, JP;
Yoshinobu Urayama, Fujisawa, JP;
Hiroyuki Abo, Chigasaki, JP;
Takeshi Terada, Tokyo, JP;
Masahisa Watanabe, Yokohama, JP;
Taichi Yonemoto, Isehara, JP;
Noriyasu Ozaki, Atsugi, JP;
Junichi Kobayashi, Ayase, JP;
Shuji Koyama, Kawasaki, JP;
Tadanobu Nagami, Yamato, JP;
Yoshinori Tagawa, Yokohama, JP;
Kenji Fujii, Kawasaki, JP;
Hiroyuki Murayama, Kawasaki, JP;
Masaki Ohsumi, Yokosuka, JP;
Jun Yamamuro, Yokohama, JP;
Yoshinobu Urayama, Fujisawa, JP;
Hiroyuki Abo, Chigasaki, JP;
Takeshi Terada, Tokyo, JP;
Masahisa Watanabe, Yokohama, JP;
Taichi Yonemoto, Isehara, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head and a method of forming the same. The liquid ejection head includes a substrate, an ejection port, a liquid channel, and a supply port. The substrate has, above one side thereof, an energy generating element configured to generate energy used to eject liquid. The ejection port, from which a liquid is ejected, is located at a position corresponding to the energy generating element. The liquid channel communicates with the ejection port and penetrates the substrate from the one side to another side of the substrate. The supply port communicates with the liquid channel. The substrate has a projecting layer extending inward of an inner peripheral portion of an opening in the supply port in the one side, and the projecting layer and the energy generating element are formed of the same material.