ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,815, issued on Dec. 30, was assigned to BROTHER KOGYO K.K. (Nagoya, Japan).
"Liquid droplet discharging apparatus" was invented by Taisuke Mizuno (Yokkaichi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid droplet discharging apparatus 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 liquid inside the channel is in a range of 120 kHz to 160 kHz, a recordin...