ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,804, issued on July 21, was assigned to Canon K.K. (Tokyo).
"Image forming apparatus" was invented by Yasumasa Matayoshi (Shizuoka, Japan) and Masatoshi Itoh (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An image forming apparatus includes a fixing unit including a heater and a temperature detecting element, a switching element, an interrupting element put in a connection state between the heater and an AC power source or an interruption state between the heater and the AC power source, and a controller for controlling the switching element and the interrupting element on the basis of temperature information detected by the tempera...