electrolytic photocopying

electrolytic photocopying
   A photocopying process in which an image is projected on a sheet consisting of a paper support, a thin aluminum laminate, and a coating of a white photoconductive substance in contact with an electrolyte, and electrolysis takes place in the exposed area when a direct current is applied across the electrolyte and the aluminum underlayer.

Forensic science glossary. . 2012.

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