ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,218, issued on Feb. 17, was assigned to TOSHIBA TEC K.K. (Tokyo).
"Temperature control device and image forming apparatus including temperature control device" was invented by Takeshi Kojima (Tagata Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A temperature control device controls power supplied to a heater based on a temperature estimate value estimated over time so that a temperature control target to which heat propagates from the heater of the fixing unit reaches a preset target temperature. The temperature control device includes a temperature sensor, first and second storage circuits, a temperature difference detection circui...