US Patent Issued to Seiko Epson on July 14 for "Liquid ejection apparatus and liquid ejection head" (Japanese Inventor)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,085, issued on July 14, was assigned to Seiko Epson Corp. (Tokyo).

"Liquid ejection apparatus and liquid ejection head" was invented by Daichi Orihara (Shiojiri, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection apparatus includes an ejection portion including a piezoelectric element driven by a drive signal, a first wire to which a first drive signal of the drive signal is supplied, a second wire electrically coupled to an element electrode of the piezoelectric element, and a detection circuit detecting a potential of the element electrode varying according to a vibration remaining in the piezoelectric element after driving of ...