Xerox Copier, 1960.
4 0 c m
 
34cm
actual image size: 26cm x 32cm

Xerox Copier, 1960.

© Science Museum / Science & Society Picture Library

Description

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 proces. A pattern of positive charges on the plate, representing the areas to be copied, attracts negatively charged particles - the toner. The new pattern of the toner is then heat-sealed on to a piece of paper. This proces was first pioneered by an American lawyer Chester Carlson (1906-1968), but copiers were not made commercially until the 1950s.
 

Image Ref.

10233289
 

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