Word: photoconductor
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Denying Xerox's accusations, Bart M. Stevens, president of IBM's office-products division, said that the new copier uses a "specially developed photoconductor" that IBM patented in 1965. The 40-in.-high model can churn out letter-or legal-size copies at a 600-per-hour rate from a roll of plain white paper. It sells for $19,200 or rents for $200 a month plus 2.3? per copy...
...lens focuses the scene being viewed on the front side of the photoconductor. A slender beam of electrons from an "electron gun" scans the rear side of the photo-conductor. When the electrons hit a brightly lighted area, a lot of them pass through. When they hit dark parts, only a few of them pass through. The transparent conducting layer collects the escaping electrons and passes them on in the form of a "video" current whose rapid fluctuations represent the light and shade of the picture. An ordinary television set turns the current into a copy of the scene which...
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