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. 25, 2015
Filed:
Jul. 24, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Maki Kato, Fuchu, JP;
Takahiro Matsui, Yokohama, JP;
Nobuyuki Hirayama, Fujisawa, JP;
Ichiro Saito, Yokohama, JP;
Yuzuru Ishida, Yokohama, JP;
Kenji Takahashi, Yokohama, JP;
Sadayoshi Sakuma, Oita, JP;
Norihiro Yoshinari, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A print head includes upper protective members located at positions corresponding to heat generating resistor elements to protect the heat generating resistor elements, and further, a part of the protective member can be eluted into ink when a current flows inside in a state in which the ink is stored in the pressure chambers. The print head includes a drive element and a logic circuit capable of allowing a current to independently flow in each of the upper protective layers so as to elute a part of the upper protective layer, in which the current flows, into the ink.