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. 12, 2021
Filed:
Sep. 16, 2019
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Takuya Fukasawa, Yokohama, JP;
Yuhei Oikawa, Yokohama, JP;
Takatoshi Nakano, Yokohama, JP;
Yoshinori Nakagawa, Kawasaki, JP;
Atsushi Takahashi, Tama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/18 (2006.01); B41J 2/045 (2006.01);
U.S. Cl.
CPC ...
B41J 2/18 (2013.01); B41J 2/0458 (2013.01); B41J 2/04563 (2013.01);
Abstract
Ink is circulated through a circulation flow path between a print head and an ink tank. Detection operation for detecting an ink ejection state in an ejection opening in the print head is performed. The ink circulation and the detection operation are simultaneously performed by performing the detection operation in response to a start of the ink circulation.