ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,152, issued on Aug. 12, was assigned to Canon K.K. (Tokyo).
"Liquid ejection head and liquid ejection apparatus" was invented by Koji Tachibana (Kanagawa, Japan), Shingo Okushima (Kanagawa, Japan) and Takuya Iwano (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "To improve the structural reliability of a liquid ejection head, the liquid ejection head includes a first substrate having ejection ports, liquid chambers, and energy generation elements, and a second substrate joined to a second surface of the first substrate situated opposite to its first surface. The first substrate includes projecting areas projecting from end portions of the secon...