ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,591, issued on April 22, was assigned to Seiko Epson Corp. (Tokyo).
"Printing system" was invented by Masaki Aoyagi (Nagano, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A printing system performs first double-side printing when double-side printing is designated to a first print medium sides of which are distinguished from each other, and second double-side printing when the double-side printing is designated to a second print medium sides of which are not distinguished from each other, and a print page printed on a first surface set face-down when being fed out of a plurality of print pages included in print data is different between the fi...