| 摘要 |
PROBLEM TO BE SOLVED: To prevent the offset of a temperature in the axial direction of a fixing roller while preventing the temperature rise of an induction coil. SOLUTION: A sensor 5 for detecting the temperature of the induction coil 2 on a blast fan 3 installation side is arranged inside the fixing roller 1. Besides, a sensor 6 for detecting the temperature of the coil 2 on an induced draft fan 4 installation side is arranged. When the temperature detected by the sensor 5 reaches the temperature equal to or exceeding a prescribed temperature T1, the fan 3 is rotated, and, when the temperature detected by the sensor 6 reaches a prescribed temperature T2, the fan 4 is rotated.
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