This early Xerox Copier uses the attraction of opposite electric charges to reproduce words and images. Inside the copier, a metal plate coated with selenium facilitates this process. A pattern of positive charges on the plate, representing the areas to be copied, attracts negatively charged particles - the toner - which is then heat-sealed on to a piece of paper. This process was pioneered by Chester Carlson (1906-1968) in 1938, but the first commercial copiers were not produced until the 1950s.

Picture Reference: 10326263
Subject: ENTERTAINMENT & MEDIA > Printing & Writing > Duplicators
Inventory No.: 1981-2179
Credit: Science Museum

Keywords: 1385, 1900s, 20th Century, Carlson, Carlson, Chester, Chester, Copying, Copying Machines, Duplicators, Electrophotography, Machine, Photocopiers, Photocopying, Rank, Rank Xerox Standard 1385, Standard, United States, United States Of America, Xerox

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