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:
Jul. 21, 2026
Filed:
Nov. 15, 2023
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/14 (2006.01); B41J 2/045 (2006.01); H10N 30/87 (2023.01); H10N 30/88 (2023.01);
U.S. Cl.
CPC ...
B41J 2/14233 (2013.01); B41J 2/04566 (2013.01); H10N 30/87 (2023.02); H10N 30/883 (2023.02); B41J 2/04581 (2013.01); B41J 2002/14241 (2013.01);
Abstract
A liquid ejecting head includes: a piezoelectric element that includes a first drive electrode, a second drive electrode, and a piezoelectric body, the piezoelectric body being provided between the first drive electrode and the second drive electrode in a lamination direction; a pressure chamber substrate that is provided on the one side of the lamination direction with respect to the vibration plate; and detection electrodes that acquire information on humidity and include a first detection electrode in contact with a protective film and a second detection electrode in contact with the protective film at a position separated from the first detection electrode.