Abstract: In a duplex image transferring device of the present invention, a first bicolor toner image formed by a developing liquid is transferred to one side of a sheet. This toner image on the sheet includes a carrier liquid layer containing a liquid carrier of an amount not great enough to serve as an electrophoresis medium for a toner layer deposited on the sheet, but sufficient to serve as a parting agent for the toner layer and an intermediate image transfer belt contacting the toner image. Subsequently, a bicolor toner image of the same polarity as the toner layer is transferred to the other side of the sheet. It is possible to transfer the toner images to both sides of the sheet without switching back the one-sided sheet, without using two kinds of toner each being chargeable to particular polarity or without charging one toner image to the opposite polarity with a corona charger.