Fixing device in an image forming apparatus having multiple heater lamps

摘要

A fixing device for an image forming apparatus includes a fixing heat roller having disposed therein a plurality of heater lamps and serving to press a paper sheet conveyed between the fixing heat roller and a pressure roller for heat fixing a toner image formed on the paper sheet. A control logic operates, in activating the heater lamps, to drive at least one of the heater lamps earlier than the other heater lamps and to drive the other heater lamps with a predetermined time delay. The at least one heater lamp of the plurality of heater lamps has a power consumption which is smaller than that of the other heater lamps.