Patent ID: 7196286
Filing Date: 2007-03-27
Classification: G03G

Abstract:
1. A fixing device comprising: a main power supply; an auxiliary power supply; a heater unit disposed to face a pressure unit and configured to heat and fuse a toner image onto a recording medium which is delivered to a nip portion between the heater unit and the pressure unit; a main heating element configured to generate heat with power supplied from the main power supply; and a plurality of auxiliary heating elements connected in parallel and configured to generate heat with power supplied from the auxiliary power supply, wherein the auxiliary heating elements have a resistance smaller than the resistance of the main heating element, a current supplied from the auxiliary power supply to the plurality of auxiliary heating elements is separate from a current supplied from the main power supply to the main heating element, the main power supply supplies a high-voltage power to the main heating element, and the auxiliary power supply supplies a large current low-voltage power to the auxiliary heating elements.