Image forming apparatus which presents faulty image when toner image on image bearing member is transferred to transferring medium

摘要

The present invention provides an image forming apparatus in which re-transferring and scattering can be prevented when a toner image on an image bearing member is repetitively transferred to a transferring medium, thereby preventing the lowering of the quality of image, and for this purpose, the image forming apparatus according to the present invention is provided with: an image bearing member; electrostatic image forming means for forming an electrostatic image on the image bearing member; developing means having toners differing in brightness and for developing the electrostatic image to thereby form a toner image; a transferring medium contacting with the image bearing member and moved in a predetermined direction, and to which a plurality of toner images differing in brightness are transferred; a transfer member for imparting charges to a rear surface opposite to a surface of the transferring medium to which the toner images are transferred, by a bias being applied thereto, and transferring the toner image on the image bearing member to the transferring medium; and bias applying means for applying a bias to the transfer member while transfer by the transfer member is effected; wherein the set condition of the transfer member differs in conformity with the brightness of the toner of the toner image the transfer member transfers.