Micro-film reader

Details Micro-film reader Micro-film reader

1986-07-10

1988-06-21

Haroian, Harry N.

Optics: image projectors

Selective data retrieval

Film strip

G03B 2312

Patent

active

047521244

ABSTRACT:
A micro film reader for projecting by optical devices on a projection surface a selected image recorded in a micro film having a plurality of recording channels in a direction of width of the micro film. The micro film reader has a film carrier for holding and transporting the micro film, a drive motor for shifting the film carrier in the width direction of the micro film, shifting amount setting keys for setting shifting amount of the film carrier, and a channel switching device. The channel switching device controls the drive motor to shift the film carrier by a shifting amount set by means of the shifting amount setting keys. The micro film reader further has a film shifting device for controlling the drive motor to shift the film carrier by a certain amount in response to external signals.

REFERENCES:
patent: 3741637 (1973-06-01), Katsuragi
patent: 3751152 (1973-08-01), Rinehart
patent: 4043652 (1977-08-01), Mickelson
patent: 4436391 (1984-03-01), Kashiwagi

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