Patent ID: 7623802

Claim:
A fixing device for an image forming apparatus comprising: an image-side rotating member; a non-image-side rotating member configured to nip and carry a fixing target medium having a toner image thereon into a predetermined direction together with the image-side rotating member; a first heating source which is supplied with power by using a commercial power source configured to heat the image-side rotating member; a second heating source which is supplied with power by using a commercial power source configured to heat the non-image-side rotating member; and a control unit configured to variably control power to be supplied to the first heating source and power to be supplied to the second heating source so that a sum value of the power to be supplied to the first heating source and the power to be supplied to the second heating source does not exceed a prescribed power value of the commercial power source while the image-side rotating member is carrying out an arbitrary operation mode, wherein the power to be supplied to the first heating source is given priority.