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. 20, 2007
Filed:
Sep. 21, 2004
Applicants:
Ryoichi Matsumoto, Tokyo, JP;
Ryoji Inoue, Kanagawa, JP;
Inventors:
Ryoichi Matsumoto, Tokyo, JP;
Ryoji Inoue, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/195 (2006.01); B41J 2/17 (2006.01); B41J 2/175 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ink tank includes a coil, and the coil is in contact with ink in the ink tank so that inductance is changed according to the amount of ink remaining in the ink tank. The coil is connected to a recording apparatus through electric contacts.