US Patent Issued to Canon on June 23 for "Liquid ejection head" (Japanese Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,885, issued on June 23, was assigned to Canon K.K. (Tokyo).

"Liquid ejection head" was invented by Koichi Ishida (Tokyo), Shuzo Iwanaga (Kanagawa, Japan), Hiroaki Mihara (Tokyo), Satoshi Kimura (Kanagawa, Japan) and Tomohiro Sato (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection head includes a print element substrate having an ejection port forming member including an ejection surface on which a plurality of ejection port arrays for ejecting liquid are formed and a protection member having an opening corresponding to one of the ejection port arrays, the protection member is provided with at least one recessed portion at an end...