Xerography
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Xerography (or electrophotography) is a photocopying technique developed by Chester Carlson in 1938 and patented on October 6, 1942. He received U READ MORE http://en.wikipedia.org/wiki/Xerography
Xerography/Photocopy usually has a toner cartridge that is replaced with another toner cartridge when it is empty. Photocopy machines use printer paper or copy paper.