To provide a roller transfer device preventing the back surface of transfer paper from being soiled because of a situation that toner flows from both ends of a blade to the end and soils the inside of an image forming device.

In this roller transfer device 23 using a transfer roller 35 for transferring the toner to the transfer paper P, a cleaning blade 36 abuts also on the end cross section part 35a of the roller 35. Since the inside of the device 23 is not soiled, maintenance time is shortened and the back soiling of the transfer paper is prevented.