Recorder using light emitting diodes

Details Recorder using light emitting diodes Recorder using light emitting diodes

1975-04-28

1976-10-26

Hartary, Joseph W.

Recorders

Light or beam recording

Including record receiver or handling means therefor

178 67R, 340173LM, 346 1, G01D 942

Patent

active

039887421

ABSTRACT:
Light emitting diodes are optically coupled to a photosensitive material through fiber optics. Incoming data are used to determine the emission of the diodes so that the incoming information is printed and stored as shades of grey. Tone and contrast control are provided, and either positives or negatives may be printed. Very high speed operation, on the order of gigabits per second, is currently feasible.

REFERENCES:
patent: 3072889 (1963-01-01), Willcox
patent: 3389403 (1968-06-01), Cottingham et al.
patent: 3438057 (1969-04-01), Neitzel
patent: 3761917 (1973-09-01), Brown et al.
patent: 3781783 (1973-12-01), Tucker
patent: 3832488 (1974-08-01), Fahey
patent: 3850517 (1974-11-01), Stephany et al.

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