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:
Apr. 14, 2015
Filed:
Apr. 07, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Toshiyasu Sakai, Kawasaki, JP;
Yuzuru Ishida, Yokohama, JP;
Takahiro Matsui, Yokohama, JP;
Yoshinori Misumi, Tokyo, JP;
Maki Kato, Fuchu, JP;
Norihiro Yoshinari, Kawasaki, JP;
Ichiro Saito, Yokohama, JP;
Kenji Takahashi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A substrate for a liquid discharge head includes an upper protection film that covers at least a region corresponding to each of thermal energy generation elements. The upper protection film and at least one of the upper protection films adjacent to the upper protection film within a liquid chamber are respectively connected to different external electrodes, and a voltage can be applied therebetween via the different external electrodes.