OSA | Living History

In 1938, Chester Carlson invented electrophotography which came to be known as xerography.

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Xerography

Chester Carlson invented electrophotography in 1938 using static electricity and a photoconductive sulfur-coated zinc plate to transfer “10-22-38 ASTORIA” from a glass plate onto paper.

The 1948 OSA Annual Meeting in Detroit was the first public demonstration of xerography, the commercial name given to electrophotography developed by Chester Carlson. (Photo: Courtesy of Xerox Corporation)

(Courtesy of Courtesy of Xerox Corporation)