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RE: [Homebrew_PCBs] updated my laser photoplotter

2014-05-03 by <elson@...>

Well, this sort of mechanism has been used for image printing and scanning for a
LONG time. Early weather FAX machines did this starting around WW-II, I
think. Newspapers had halftone converters that used a similar drum
scanning system back in the '30s, I think.

Jon

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