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. 11, 2025
Filed:
Mar. 13, 2023
Applicant:
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Inventors:
Assignee:
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01);
U.S. Cl.
CPC ...
B41J 2/04581 (2013.01); B41J 2202/10 (2013.01);
Abstract
A liquid droplet ejecting device includes a channel member and an actuator. The channel member has a channel. The channel includes a nozzle and a pressure chamber communicating with the nozzle. The actuator is on the channel member and configured to apply a pressure to a liquid in the pressure chamber. A diameter of the nozzle and a natural frequency of the channel are parameters of the liquid droplet ejecting device to satisfy that (1) the actuator has a threshold drive frequency of 100 kHz or more, (2) the nozzle ejects a liquid droplet having a volume of 1.8 pl or more, and (3) the Ohnesorge number is 0.2 or more.