1. A method of reproducing an original document on a sheet of support material, including the steps of: forming a first powder image having a lower density than the original document on a photoconductive member; transferring the first powder image from the photoconductive member to a sheet of support material; producing a half-tone powder image having substantially the density of the original document on the photoconductive member; and transferring the half-tone powder image from the photoconductive member to the sheet of support material in superimposed registration with the first mentioned powder image transferred thereto to produce a copy of the original document therein.