US Patent Issued to Seiko Epson on March 31 for "Liquid ejection apparatus, liquid ejection head, and method of controlling liquid ejection apparatus" (Japanese Inventor)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,588, issued on March 31, was assigned to Seiko Epson Corp. (Tokyo).

"Liquid ejection apparatus, liquid ejection head, and method of controlling liquid ejection apparatus" was invented by Daichi Orihara (Nagano, 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, a pressure chamber filled with a liquid and having a volume that changes according to driving, and a nozzle ejecting the liquid in the pressure chamber according to a change of the volume of the pressure chamber, a detection unit detecting a vibration signal indicating a potential of the piez...