ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,558, issued on Sept. 23, was assigned to Seiko Epson Corp. (Tokyo).
"Printing apparatus" was invented by Shigeki Fukushima (Matsumoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A printing apparatus includes a control unit, wherein the control unit executes processing of updating a ink remaining amount information to an initial remaining amount and processing of updating a ink usage amount information to an initial usage amount when an input indicating that a ink storage unit is refilled with a ink is received, displays, on a display unit, a first ink indication indicating a usage state of the ink based on the ink remaining amount informa...