In the Eastman Kodak literature of the 1960s many references
are made to electrolytic photoetching
as an alternative process to the more conventional
methods of PCM, such as immersion and spray-etching.
The electrolytic method requires the imaged workpiece
to be connected as an anode in a cell comprising an
electrical power unit, aqueous electrolyte and inert
David Allen, Cranfield Institute of Technology