Word: scanners
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Dates: during 1940-1949
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...Comes Out Here. Hogan developed a simplified system: for the transmitter, a photoelectric scanner that "read" copy from a revolving cylinder; for the receiver, an electrolytic printer that left a thin metal deposit on damp paper (it came out dry). The paper cost a dollar for a 400-ft. roll, enough to last a subscriber for a month...