A fixing device includes a first rotation member formed hollow cylindrical and rotatable in a predetermined direction, a second rotation member brought into contact with the first rotation member at a predetermined pressure, so as to be rotated as the first rotation member rotates, creating a contact section with the first rotation member, through which an object to be heated can pass, a first induction heating device, provided within the first rotation member, for applying an alternating magnetic field which is in parallel with a circumferential direction of the first rotation member, onto the first rotation member, and a second induction heating device, provided within the first rotation member such as to surround an outer section of a part of the first induction heating device, and be close to both end portions of the first rotation member, for applying an alternating magnetic field which is in parallel with a circumferential direction of the first rotation member, onto the first rotation member, the fixing device heating the output image holding medium on which the first and second toner images have been transformed, and the toners which form the toner images, thereby fixing the toner on the output image holding medium.