ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,600, issued on June 24, was assigned to RISO Technologies Corp. (Tokyo).
"Liquid ejection head" was invented by Keita Takahashi (Mishima Shizuoka, Japan), Takashi Tozuka (Sunto Shizuoka, Japan) and Minoru Koyata (Mishima Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to one embodiment, a liquid ejection head includes a substrate with a hole, a nozzle plate with a plurality of nozzles, and an actuator on a first surface of the substrate. The actuator has a plurality of pressure chambers aligned to the plurality of nozzles. An electrode has a first portion on the first surface of the substrate and a second portion on a second...