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:
Oct. 08, 2019
Filed:
Jun. 01, 2018
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Kengo Umeda, Tokyo, JP;
Satoshi Kimura, Kawasaki, JP;
Shingo Okushima, Kawasaki, JP;
Satoshi Oikawa, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/05 (2006.01); B41J 2/18 (2006.01); B41J 2/175 (2006.01); B41J 29/13 (2006.01); B41J 29/38 (2006.01); B41J 2/045 (2006.01); B41J 2/14 (2006.01);
U.S. Cl.
CPC ...
B41J 2/05 (2013.01); B41J 2/0458 (2013.01); B41J 2/04541 (2013.01); B41J 2/14153 (2013.01); B41J 2/175 (2013.01); B41J 2/1752 (2013.01); B41J 2/17509 (2013.01); B41J 2/18 (2013.01); B41J 29/13 (2013.01); B41J 29/38 (2013.01);
Abstract
A printhead comprises a print element substrate that includes a print element and a circuit board electrically connected to the print element substrate. An ink leakage detection unit, which includes a first electrode and a second electrode, and which is configured to detect ink leakage, is provided on the circuit board. At least one of the first electrode and the second electrode is electrically connected to a terminal of the print element substrate.