Exposure station

Details Exposure station Exposure station

1977-08-12

1979-06-12

Wintercorn, Richard A.

Photocopying

Contact printing

Light boxes

350269, 354236, 354250, 354264, 355 36, 355 71, 355101, G03B 2704

Patent

active

041578708

ABSTRACT:
A microfiche duplicator exposure station where a copy sheet lies facewise over a master while an elongated lamp shines light through the master to expose the copy sheet. A shutter that controls exposure, includes two plates lying over the lamp and a solenoid that quickly pivots the plates to positions beside opposite ends of the lamp to allow light from the lamp to reach the microfiche. The plates have mirror surfaces extending at an incline of about 60.degree. from the vertical when the plates are at opposite ends of the lamp, to shine light onto opposite ends of the microfiche, to thereby compensate for low illumination thereat produced by an elongated lamp.

REFERENCES:
patent: 3602579 (1971-08-01), Silvertooth

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