ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,288, issued on July 15, was assigned to Seiko Epson Corp. (Tokyo).
"Liquid ejection device and control method for liquid ejection device" was invented by Yasuaki Hirai (Shiojiri, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection device includes a liquid ejection unit configured to perform printing by ejecting a liquid from a nozzle onto a medium, a maintenance unit configured to perform maintenance of the liquid ejection unit, a determination unit configured to determine whether printing data for the printing is ruled-line data including a vertical ruled line or non-ruled-line data not including the vertical ruled line, a storag...