US Patent Issued to Seiko Epson on Jan. 13 for "Liquid ejection device and control method of liquid ejection device" (Japanese Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,989, issued on Jan. 13, was assigned to Seiko Epson Corp. (Tokyo).

"Liquid ejection device and control method of liquid ejection device" was invented by Masanobu Yamaguchi (Matsumoto, Japan), Koji Kawatani (Shiojiri, Japan), Tsuyoshi Hayashi (Shiojiri, Japan) and Masaaki Ando (Matsumoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A control method of a liquid ejection device having an ejection unit, and a maintenance unit for maintaining the ejection unit, the ejection unit having a first head having a first nozzle configured to eject the liquid, and a second head having a second nozzle configured to eject the liquid and a third nozzle conf...