FIXING DEVICE AND TEMPERATURE CONTROL METHOD

摘要

A fixing device, wherein the rotary drive system of a heating belt (210) is adopted as a cooling mechanism cooling the overall paper passage area of the heating belt (210) and the heating belt (210) is idled in a paper non-passage state by a rotary cooling system for cooling. An exciting device (230) and the cooling mechanism are controlled to cool the heating belt (210) while heating through a heating width in a case when recording paper (109) of small size is passed without passing the recording paper (109) therethrough until the detection temperature of a paper non-passage area temperature detection sensor (260x) becomes a specified fixing temperature or below. The fixing device (200) can uniformize the temperature distribution of the heating belt (210) in a short time by efficiently eliminating the overheated temperature of the paper non-passage area of the heating belt (210).