ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,009, issued on Jan. 13, was assigned to Canon K.K. (Tokyo).

"Printing apparatus and control method thereof" was invented by Atsushi Takei (Kanagawa, Japan), Tetsuya Narazaki (Tokyo), Toshiyuki Chikuma (Tokyo) and Hirokazu Yoshikawa (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A printing apparatus includes a mounting unit, a tank, a pump, a detection unit, an obtainment unit, and a control unit. The mounting unit is configured so that a head that ejects ink can be mounted in a replaceable manner. The tank contains ink to be supplied to the head via a tube. The pump discharges ink to an outside of the head. The detection unit detect...