| 摘要 |
PROBLEM TO BE SOLVED: To reduce influence such as flickering of a lamp and deformation of an image on a CRT display respectively connected onto the same power source line as the heating source caused by conducting electricity to the heating source of a fixing device in the image forming device of heat-fixing system. SOLUTION: In the temp. control at the time of printing with use of plural heaters (heating sources) 41 to 44, this device is controlled so that one or more heaters are put on even if all plural heaters come to the worst lighting state, and that more than two heaters are simultaneously conducted, by setting the minimum lighting time in ON/OFF cycle of respective heater and the energizing timing. Moreover, the heater is driven in <=1sec cycle of energizing state and unenergizing state. As a result, a load fluctuation for one heater corresponding to the power source line is suppressed, and the influence such as flickering of the lamp connected onto the same power source line can be reduced. |
