ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,813, issued on March 18, was assigned to Toshiba Tec K.K. (Tokyo).
"Image forming apparatus and control method" was invented by Noboru Furuyama (Odawara Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An image forming apparatus includes a fixing device and a control unit. The fixing device includes a heating resistor formed of a positive temperature coefficient material. The control unit energizes the heating resistor with a first energization amount if a temperature of the heating resistor is lower than a predetermined temperature, and energizes the heating resistor with a second energization amount that is higher than the first ene...