Rank Xerox standard 1385 copying machine, c 1960.
4 0 c m
 
32cm
actual image size: 24cm x 32cm

Rank Xerox standard 1385 copying machine, c 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 - which is then heat-sealed on to a piece of paper. This proces was pioneered by Chester Carlson (1906-1968) in 1938, but the first commercial copiers were not produced until the 1950s.
 

Image Ref.

10326263
 

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