Abstract: An inner heating member is disposed in contact with an inner circumferential surface of a heating belt and an outer heating member is disposed in contact with an outer circumferential surface of the heating belt to heat the heating belt. A restricting member configured to restrict an orbit of the heating belt is disposed between the inner and outer heating members. Then, at least either one of an area of contact between the inner circumferential surface of the heating belt and the inner heating member and an area of contact between the outer circumferential surface of the heating belt and the outer heating member is changed to quickly change a quantity of heat applied to the outer circumferential surface or inner circumferential surface of the heating belt.

Abstract: The present invention provides an image forming apparatus capable of appropriately curing curl which is apt to be generated at a fixing-completed sheet. An intersection angle ?2 between respective axis lines 81c, 82c of an upper conveying roller 81 and a lower conveying roller 82 in a conveying apparatus 80 is set to be in the opposite direction to an intersection angle ?1 between respective axis lines 50c and 51c of a fixing roller 50 and a pressure roller 51 in the fixing apparatus 40. Accordingly, curl generated at a sheet S at the time of pressure fixing at the fixing apparatus 40 can be returned into a state before fixing as being appropriately corrected in the opposite direction by the upper conveying roller 81 and the lower conveying roller 82.