Microfilm transport with automatic threading

Details Microfilm transport with automatic threading Microfilm transport with automatic threading

1976-07-21

1978-02-28

Stephan, Steven L.

Optics: image projectors

Film gate

226 92, 242195, 352158, 352230, G03B 158, G11B 1532, G03B 148

Patent

active

040764001

ABSTRACT:
A microfilm reader has a film transport mechanism driven by separate forward and reverse motors. When the forward motor first starts, power may be applied, via a one way clutch, to a capstan in order to automatically thread the film into the reader. A film gate opens as the film approaches it and thereafter closes, after the film is captured therein. A manual override gate control may prop the film gate open, if film is manually fed through the system.

REFERENCES:
patent: 2986968 (1961-06-01), Kropp et al.
patent: 3604793 (1971-09-01), Wangerin et al.
patent: 3620472 (1971-11-01), Thevenaz
patent: 3688960 (1972-09-01), Bunting
patent: 3701595 (1972-10-01), Thomsen et al.
patent: 3819129 (1974-06-01), Thevenaz et al.

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