| 摘要 |
PROBLEM TO BE SOLVED: To provide a heating device capable of performing temperature control of a heat roller with high accuracy using a non-contact thermistor as a main thermistor.SOLUTION: A heating device includes: a heating source heating a heating member; a non-contact thermistor which is disposed with a gap from the heating member and detects the temperature of the heating member; a contact thermistor which is brought into contact with the heating member to detect the temperature of the heating member; and a control section controlling the heating source on the basis of the detection temperature of the non-contact thermistor and the detection temperature of the contact thermistor and controlling the heating member at a prescribed temperature. The control section uses the detection temperature of the contact thermistor in the temperature control from a start time up to a target temperature and performs the temperature control using the detection temperature of the non-contact thermistor when a temperature exceeds the target temperature. |
