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:
Nov. 04, 2025
Filed:
Dec. 04, 2023
Applicant:
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Inventors:
Assignee:
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/14 (2006.01);
U.S. Cl.
CPC ...
B41J 2/14233 (2013.01); B41J 2/14201 (2013.01); B41J 2002/14475 (2013.01); B41J 2202/11 (2013.01);
Abstract
A liquid droplet discharging head includes: a channel member having a channel including a nozzle and a pressure chamber communicating with the nozzle; and a piezoelectric element fixed to the channel member and configured to apply pressure to liquid inside the pressure chamber to discharge liquid droplets of the liquid from the nozzle. A natural frequency Fr of the channel is not less than 250 kHz; and a diameter D [μm] of the nozzle has a relationship of the following expression (1) with the natural frequency Fr [kHz]: 0.0446×Fr+7.5≤0.0446×Fr+13.5 . . . (1).