Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups [CPC: G03G13/02] - [CPC: G03G13/20] specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups [CPC: G03G13/02] - [CPC: G03G13/20] specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material