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. 16, 2021
Filed:
Dec. 17, 2019
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Shiki Kumagai, Shiojiri, JP;
Masashi Kamibayashi, Matsumoto, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01); B41J 2/165 (2006.01);
U.S. Cl.
CPC ...
B41J 2/0451 (2013.01); B41J 2/04586 (2013.01); B41J 2/165 (2013.01);
Abstract
A liquid ejection head includes a nozzle face provided with a nozzle configured to eject a liquid, a cap member configured to contact the nozzle face at a position enclosing the nozzle and to be fitted so as to cover the nozzle, the cap member being formed with an atmosphere communication hole to place an inside of the cap member and a surrounding atmosphere in communication with each other, and a clog determination mechanism configured to determine whether or not the atmosphere communication hole is in an at least partially blocked state.