| 摘要 |
PROBLEM TO BE SOLVED: To prevent increasing self power consumption of a direct current stabilizing circuit in a light load state and to stabilize operation at the time of a light load. SOLUTION: This device is provide with a main heater 10 stored in a fixation rolls 6, a temperature detecting means 7 detecting the temperature of the fixation roller 6, a temperature control circuit 8 controlling ON/OFF of a switch circuit 11 for the main heater provided between the main heater 10 and a commercial powder source in accordance with the result of temperature detection, a direct current stabilizing circuit 2 converting AC power from a commercial power source to direct current power and supplying it to a load 3 of a motor for driving a printer and the like, and a control circuit 4 controlling operation of the motor and the like. Further, an auxiliary heater 9 heating the fixation roller 6 and a switching circuit 5 for the auxiliary heater connecting the auxiliary heater 9 to an output of the direct current stabilizing circuit 2 are double provided in the main heather 10, and the control circuit 4 is provided with a function by which the switching circuit 5 for the auxiliary heater is turned on at the time of light load. |
