PURPOSE: To obtain excellent recorded images free of ground staining by placing the circumferential surface of an intermediate transfer medium with an insulating layer close to a donor at an extremely small interval, applying a DC deviated AC voltage and scattering toner, and passing the toner onto the circumferential surface of the intermediate transfer medium and thus performing transfer to a transfer member.

CONSTITUTION: An intermediate transfer medium 6 includes a metallic roller 6A with an insulating layer 6B and is provided under a donor 1 at an interval (g). A transfer member 6 includes a metallic roller 6A having an insulating layer 7b around its circumferential surface, and conveys recording paper S by pressing it against the intermediate transfer medium 6. The metallic roller 7A is applied with a DC transfer voltage of, e.g. -450V from a power source 7D. Consequently, the leaking of charge through the recording paper S is prevented during the transfer of a toner image to the recording paper S because of the presence of the electric insulating layer 7B to prevent the disorder of the transferred image caused by the leaking.