Film transport system for microfilm reader

Details Film transport system for microfilm reader Film transport system for microfilm reader

1977-07-12

1979-08-14

Aegerter, Richard E.

Optics: image projectors

Selective data retrieval

Film strip

G03B 2312

Patent

active

041643674

ABSTRACT:
A film transport and control system for a microfilm image projection system having a single joy-stick operator device which controls both vertical scan and film speed in foreward and reverse. At higher film speeds, in both directions, the glass flats between which the film passes across the projection station are separated to prevent scratching the film.

REFERENCES:
patent: 3551042 (1970-12-01), Brink et al.
patent: 3806235 (1974-04-01), Wangerin
patent: 3822091 (1974-07-01), Altmann
patent: 3885867 (1975-05-01), Nelson et al.
patent: 3973344 (1976-08-01), Frankel

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