Review of DAFNE Lattices

A corona generating apparatus is provided comprising a back-up plate and screen wires, at least one corona discharge wire positioned therebetween, adapted to be mounted in closely spaced relation with an electrostatographic plate to uniformly apply an electrostatic charge onto said plate, a corona-generating potential source connected to said corona discharge wire adapted to generate a corona discharge from said corona wire, and a second potential source adapted to be connected to said screen wires and impress a time or position varying voltage upon said screen wires permitting high initial charging current to flow thereby rapidly charging said plate while limiting the ultimate charge applied thereto.