A wet electro-photographic printer includes a transfer/fixing apparatus having
a subsidiary intermediate transfer unit disposed to contact a transfer belt to
re-transfer an image on a printing paper after receiving the image from a transfer
belt, a back-up unit disposed to contact the subsidiary intermediate transfer unit
through the printing paper in order to transfer the image transferred to the subsidiary
intermediate transfer unit to the printing paper, and a fixing unit fixing the
image simultaneously or separately when the image transferred to the subsidiary
intermediate transfer unit is re-transferred to the printing paper. The transfer
belt includes a single non-elastic layer made of one material selected from polyimide,
polycabonate and ethylene-tetrafluoroethylene. The subsidiary intermediate transfer
unit includes a subsidiary intermediate transfer roller having an elastic layer
of a predetermined thickness to which a voltage of a predetermined polarity is
supplied to attach the image formed on the transfer belt to the printing paper,
and contacting the transfer belt with a predetermined pressure. Accordingly, the
printer having the subsidiary intermediate transfer unit can improve a transfer
efficiency, such as color registration quality, and reduce manufacturing expenses
as the subsidiary intermediate transfer unit having the elastic layer with the
predetermined thickness, and the transfer belt having the single thin regular non-elastic
layer are used so that the image formed on the transfer belt is not directly transferred
to the printing paper but transferred and fixed through the subsidiary intermediate
transfer unit.
