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. Methods of use and control of the device are also disclosed. This plating solution preferably further contains a sulfurous acid compound and an aminocarboxylic acid compound. The method for applying the first impregnation composition may include combining all base metals in the composition, adding Pd, drying, and adding a heat treatment. As they pass through the upper deflecting region, the filled gondolas are deflected radially by crank-like suspension mechanisms arranged on both sides, so that adjacent gondolas can be operated with a spacing between them which, in the vertical regions of the gondola path, corresponds to the spacing between two adjacent shelves.