US Patent Issued to Seiko Epson on Oct. 14 for "Liquid ejecting head, liquid ejecting apparatus, and piezoelectric device" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,110, issued on Oct. 14, was assigned to Seiko Epson Corp. (Tokyo).

"Liquid ejecting head, liquid ejecting apparatus, and piezoelectric device" was invented by Harunobu Koike (Matsumoto, Japan) and Takashi Aoki (Shiojiri, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A vibration plate includes a first layer containing silicon as a constituent element, a second layer containing a metal element other than zirconium as a constituent element, and a third layer containing zirconium as a constituent element. When a region of the vibration plate that overlaps with the pressure chamber and overlaps with the first electrode, the piezoelectric body laye...