ALEXANDRIA, Va., March 3 -- United States Patent no. 12,567,835, issued on March 3, was assigned to BROTHER KOGYO K.K. (Nagoya, Japan).
"Printing device" was invented by Tsubasa Horie (Chiryu, Japan) and Shuhei Hiwada (Toyoake, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A printing device comprises an amplifying circuit configured to amplify a drive waveform signal, and an energy generating element. The energy generating element is configured to eject the liquid from a nozzle. The amplifying circuit includes a comparator of which the drive waveform signal is input to a positive input terminal, a gate driver, an output signal being input to the gate driver from the comparator, a first N-type MOSFET a...