ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,159, issued on Aug. 12, was assigned to Canon K.K. (Tokyo).
"Liquid ejection head and liquid ejection apparatus" was invented by Kazuya Yoshii (Kanagawa, Japan), Naozumi Nabeshima (Tokyo) and Soji Kondo (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection head includes a pressure chamber, an upstream channel, a downstream channel, a pump, an inflow channel, and a bypass channel. The upstream channel communicates with the pressure chamber to supply the liquid to the pressure chamber. The downstream channel communicates with the pressure chamber. The pump communicates with the upstream channel and the downstream channel to...