An electrofax involved electrostatic printer and copier technology, where an image was formed directly on the paper, instead of first on a drum, then transferred to paper, as it would be in xerography. It was used in the United States from the 1950s through the 1980s. The paper used in this process was coated with a zinc oxide powder, adhered with...
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http://en.wikipedia.org/wiki/Electrofax
(from the article `electrophotography`) A proprietary process known as Electrofax employs a photographic paper coated with a dielectric layer; the entire charging, exposure, and development ...
Found on
http://www.britannica.com/eb/a-z/e/19
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