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:
Aug. 21, 2012
Filed:
Jun. 15, 2009
Hideo Tamura, Kawasaki, JP;
Yoshiyuki Imanaka, Kawasaki, JP;
Koichi Omata, Kawasaki, JP;
Takaaki Yamaguchi, Yokohama, JP;
Kousuke Kubo, Yokohama, JP;
Yuuji Tamaru, Yokohama, JP;
Ryoji Oohashi, Yokohama, JP;
Toshio Negishi, Kawasaki, JP;
Kazuaki Shibata, Oita, JP;
Hideo Tamura, Kawasaki, JP;
Yoshiyuki Imanaka, Kawasaki, JP;
Koichi Omata, Kawasaki, JP;
Takaaki Yamaguchi, Yokohama, JP;
Kousuke Kubo, Yokohama, JP;
Yuuji Tamaru, Yokohama, JP;
Ryoji Oohashi, Yokohama, JP;
Toshio Negishi, Kawasaki, JP;
Kazuaki Shibata, Oita, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An inkjet printhead substrate includes: a heat generating element configured to generate energy for ejecting ink; an electric wire electrically connecting the heat generating element and an electrode lead provided on a flexible film wiring substrate; a protecting film configured to protect the electric wire; an electrode pad to which the electrode lead is connected, the electrode pad being formed by providing an opening in the protecting film at a position above the electric wire; a region to which a sealing resin configured to protect an electrically connected portion of the electrode pad and the electrode lead is to be applied; and an ink-detecting electrode composed of a metal wire and formed at the region to which the sealing resin is to be applied. The metal wire has a smaller width than an opening provided in the protecting film from which the metal wire is exposed.