An image forming apparatus including a developing apparatus for developing a latent image formed on an image bearer by applying toner and a cleaning apparatus for removing the toner remaining on the image bearer after a toner image is transferred to a transfer medium. Also included is a toner scattering prevention apparatus to prevent toner scattering. The toner scattering prevention apparatus includes a pair of substantially similar air filters and is detachably attached to air draining openings respectively formed on the developing and cleaning apparatuses.