IMAGE FORMING DEVICE

PURPOSE:To provide an image forming device where image quality is not deteriorated even in the case that the image forming device becomes large and a rotary magnet is bent and which is excellent in rotating performance concerning the image forming device constituted by arranging the rotating magnet in a sleeve formed of a non-magnetic material, where toner is carried along the peripheral side surface of the sleeve by rotating the rotating magnet. CONSTITUTION:The rotary shaft 16a of the rotating magnet 16 is arranged to be eccentric upward from the center shaft 17a of the sleeve 17. Thus, an upper gap between the magnet 16 and the sleeve 17 becomes small and the toner 19 receives the complete effect of magnetic force. Then, the fluctuation of rotation is eliminated by evading the abutting of the magnet 16 on the sleeve 17.