US Patent Issued to SEIKO EPSON on Jan. 13 for "Liquid ejecting head" (Japanese Inventor)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,986, issued on Jan. 13, was assigned to SEIKO EPSON Corp. (Japan).

"Liquid ejecting head" was invented by Hiroaki Tamura (Shimosuwa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejecting head includes a piezoelectric element, a diaphragm, a reinforcing film, and a pressure chamber substrate. The reinforcing film is formed along a first direction, overlaps a boundary between the partition wall and the pressure chamber, and satisfies Y1less thanY2 and 0greater thana1greater thana2 where Y1 is a first thickness of the reinforcing film in the lamination direction at a first position, Y2 is a second thickness of the reinforcing film in t...