Patent ID: 8559839
Filing Date: 2013-10-15
Classification: G03G

Abstract:
1. A fixing device comprising: an endless fuser belt looped into a generally cylindrical configuration extending in an axial direction thereof for rotation along a circumferential direction thereof; a contact member extending in the axial direction inside the loop of the fuser belt; a pressure member extending in the axial direction with the fuser belt interposed between the contact member and the pressure member, the pressure member being pressed against the contact member through the fuser belt to form a fixing nip through which a recording medium is passed under heat and pressure; a heater to heat the fuser belt to a setpoint temperature, the heater including: a first thermometer to detect a first temperature of the fuser belt upstream of the first position along the circumferential direction; a second thermometer to detect a second temperature of the fuser belt facing the second position; and a controller connected to the first and second thermometers to control each of the first and second heating elements by adjusting an operational parameter thereof according to the first and second detected temperatures at least where the fuser belt rotates.