ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,162, issued on Feb. 17, was assigned to RICOH COMPANY LTD. (Tokyo).
"Liquid discharge head and liquid discharge apparatus" was invented by Takaya Hanada (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid discharge head includes: a nozzle plate having: a first nozzle; and a second nozzle, from each of which a liquid is dischargeable from a first face of the nozzle plate; a channel communicating with each of the first nozzle and the second nozzle, the channel on a second face opposite to the first face of the nozzle plate; multiple cylindrical protrusions having: a first cylindrical protrusion around the first nozzle and protrudi...