Compact X-Y positioning mechanism for microfiche

Details Compact X-Y positioning mechanism for microfiche Compact X-Y positioning mechanism for microfiche

1981-06-05

1983-02-22

Marcus, Stephen

Optics: image projectors

Selective data retrieval

Plural picture rows on single microcard

353 95, 355 75, 33 1M, G03B 2308

Patent

active

043746110

ABSTRACT:
A compact, smoothly operating, X-Y positioning mechanism for use in microfiche projecting apparatus is disclosed. The positioning mechanism occupies an area substantially the same size as one microfiche, however is displaceable over an area approximately four times as large. Smooth translation of the positioning mechanism is provided by two pairs of parallel rollers, the rollers of one pair being disposed perpendicularly to the other pair to allow for positioning in any direction.

REFERENCES:
patent: 1245324 (1917-11-01), Droitcour
patent: 2256178 (1941-09-01), Stuart
patent: 3563645 (1971-02-01), Burke et al.
patent: 3790266 (1974-02-01), Ueda et al.
patent: 3967890 (1976-07-01), Wells
patent: 4077708 (1978-03-01), Freiberg et al.
patent: 4262974 (1981-04-01), Tojo et al.
Giedd, "Precision X-Y Table", IBM Technical Disclosure Bulletin, vol. 13, No. 6, (Nov. 1970).

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