ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,551, issued on Aug. 26, was assigned to Canon K.K. (Tokyo).
"Liquid ejection head" was invented by Akiko Hammura (Tokyo), Yoshiyuki Nakagawa (Kanagawa, Japan), Takuro Yamazaki (Tokyo) and Atsushi Teranishi (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection head includes: an ejection port array being an array of ejection ports; a plurality of pressure chambers corresponding respectively to the ejection ports and communicating with the ejection ports; individual supply channels and individual collection channels communicating with the pressure chambers; a common supply channel communicating with surfaces of the individua...