Patent ID: 8634740

Claim:
A fixing device including an endless belt with a resistance heating layer, a pressure roller fitting loosely in a circulation path of the belt, and a pressing roller pressing the pressure roller through the belt to form a fixing nip in conjunction with a surface of the belt, and thermally fixing an unfixed image on a recording sheet by passing the recording sheet through the fixing nip, the fixing device comprising: a pair of annular electrodes provided circumferentially so as to sandwich a sheet-passing region on the surface of the belt therebetween; a first power supply member pressurizing a given one of the electrodes with pressing force; and a second power supply member positioned closer to the fixing nip than the first power supply member, pressurizing the given one of the electrodes with pressing force, and supplying power to the resistance heating layer in cooperation with the first power supply member, wherein the pressing force applied by the first power supply member is weaker than the pressing force applied by the second power supply member.