ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,481,236, issued on Nov. 25, was assigned to Canon K.K. (Tokyo).
"Heating apparatus and image forming apparatus" was invented by Kazuhiro Doda (Kanagawa, Japan), Tsuguhiro Yoshida (Kanagawa, Japan) and Kohei Wakatsu (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heating apparatus includes a fixing film and a heater in the inner space of the fixing film. The heater includes a long narrow substrate and at least two or more heating elements with different lengths in a longitudinal direction. The heating apparatus further includes first and second temperature detection units configured to detect a temperature of the heater and a control un...