Apparatus for viewing a preselected one of a plurality of media

Details Apparatus for viewing a preselected one of a plurality of media Apparatus for viewing a preselected one of a plurality of media

1974-05-06

1976-11-23

Haroian, Harry N.

Optics: image projectors

Selective data retrieval

Plural picture rows on single microcard

353103, G03B 2308, G03B 2314

Patent

active

039934055

ABSTRACT:
Apparatus is disclosed for viewing a preselected one of a plurality of information-bearing media, such as microfilm in fiche format, from a container housing a plurality of such media. The apparatus includes a frame, with the frame having a viewing area associated therewith; first means operatively associated with the frame for moving a container housing the plurality of information-bearing media between a first and second position which includes the viewing area therebetween; and selection means for retaining a preselected one of the media in the viewing area when the container is moved from the second position back to the first position. Each medium in the container includes a trailing border portion and the length of travel of the container between its first and second positions is less than the total length of the medium such that the trailing border portion remains interleaved between remaining ones of said plurality of media when the carriage returns to its initial first position. In this manner, a medium which has been selected for viewing can be easily returned into its container. The entire frame is movably mounted on a support structure for motion in transverse directions with respect thereto such that a desired "row" and "column" frame on the information-bearing medium can be properly positioned with respect to a light source positioned therebeneath.

REFERENCES:
patent: 3528735 (1970-09-01), Bluitt
patent: 3720464 (1971-01-01), Ditscheid
patent: 3743400 (1973-07-01), Haning
patent: 3754817 (1973-08-01), Iida

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