US Patent Issued to Canon on June 16 for "Liquid ejection device" (Japanese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,654,444, issued on June 16, was assigned to Canon K.K. (Tokyo).

"Liquid ejection device" was invented by Yuzuru Ishida (Kanagawa, Japan), Shinya Iwahashi (Kanagawa, Japan), Yoshinori Misumi (Tokyo) and Koichi Ishida (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection device has an element substrate having an ejection port; and a voltage application unit applying a voltage to the element substrate, wherein the element substrate has a first layer having the ejection port and a first channel communicating with the ejection port and a second layer fixed to a back face of the first layer and having a second channel communicating with the ...