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. 11, 2022
Filed:
Sep. 04, 2020
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 64/227 (2017.01); B29C 64/112 (2017.01); B29C 64/209 (2017.01); B41J 2/14 (2006.01); B41J 3/54 (2006.01); B41J 2/045 (2006.01); B41J 2/21 (2006.01); G03F 7/00 (2006.01); B29L 31/34 (2006.01);
U.S. Cl.
CPC ...
B29C 64/227 (2017.08); B29C 64/112 (2017.08); B29C 64/209 (2017.08); B41J 2/0451 (2013.01); B41J 2/04581 (2013.01); B41J 2/14233 (2013.01); B41J 2/2142 (2013.01); B41J 3/543 (2013.01); G03F 7/0002 (2013.01); B29L 2031/34 (2013.01);
Abstract
An ejection device includes: an ejection unit provided with an ejection port configured to eject an ejection material; a piezoelectric element configured to cause the ejection material to be ejected from the ejection unit; a first liquid chamber connected to the ejection unit and configured to supply the ejection unit with the ejection material; a pressure control unit configured to control a pressure in the ejection unit by controlling a pressure in the first liquid chamber; and a detection unit configured to detect a wetness of an ejection port side surface.