| 摘要 |
PURPOSE:To prevent adverse influence by the heat of a heating means from being exerted on another member by providing a forcible driving means driving a fixing driving means when the heating means is energized. CONSTITUTION:A signal 1 for turning on/off a heater 43 being the heating means by means of a control part 101 is a trigger signal with the frequency of an AC power source because of phase power control. While the trigger signal 1 is outputted, a filter 102 is operated to turn on a signal 2. The OR of a motor driving signal 4 and a motor driving signal 3 from the control part 101 is obtained so as to turn on a fixing driving motor 25 whenever the signal 2 is turned on, and inputted in a motor driving circuit 105. Namely, the motor 25 is turned on when the heater 43 is turned on regardless of the state of the motor driving signal from the control part 101. Therefore, when the heater 43 is turned on, a pressing roller being a carrying means is driven, and the heat is radiated. Thus, the adverse influence by the heat of the heater 43 is not exerted on another member. |
