ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,060, issued on June 30, was assigned to Canon K.K. (Tokyo).
"Liquid ejection head and liquid ejection apparatus" was invented by Hiroki Tajima (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection head includes an ejection port configured to eject liquid, a liquid reservoir portion configured to supply the liquid to the ejection port, and a pressure adjustment chamber configured to communicate with the liquid reservoir portion. The pressure adjustment chamber includes an elastic deformation portion configured so that an inner volume thereof can be changed according to a gas pressure and a support portion configured to sup...