ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,164, issued on Feb. 17, was assigned to Seiko Epson Corp. (Tokyo).
"Liquid discharge head and liquid discharge apparatus" was invented by Kei Kiyose (Shinagawa-ku, Japan), Harunobu Koike (Matsumoto, Japan) and Takashi Aoki (Shiojiri, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a liquid discharge head including: a piezoelectric element; a pressure chamber substrate provided with a pressure chamber; and a vibration plate configured to apply a pressure to a liquid in the pressure chamber, in which the vibration plate includes an elastic film and an insulating film, the elastic film is provided in each of an active region and ...