Aperture card reader with automatic and manual card feed

Details Aperture card reader with automatic and manual card feed Aperture card reader with automatic and manual card feed

1979-06-19

1981-01-13

Stoner, Jr., Bruce H.

Optics: image projectors

Selective data retrieval

Plural picture rows on single microcard

271 3, 271225, 271236, 271265, 271272, 355 76, G03B 2314, B65H 526

Patent

active

042446422

ABSTRACT:
An aperture card reader is equipped with a unit detachably mountable on the main body for automatically feeding aperture cards. The aperture card can automatically be placed between presser plates while the unit is mounted on the main body or, alternatively, can be manually fed when the unit is detached from the main body. The aperture card is automatically fed between the presser plates with the card in a position in which the minor sides of the aperture card are oriented in the direction of feed, while the card can be manually placed between the presser plates by feeding the card in a position in which the major sides of the card are oriented in the direction of feed. The image of the microfilm mounted on the aperture card can be projected on a screen in a horizontal position when the card is fed automatically, or in a vertical position when the card is fed manually.

REFERENCES:
patent: 2632643 (1953-03-01), Egan et al.
patent: 3445159 (1969-05-01), Hoppmann
patent: 3578317 (1971-05-01), Burnham et al.
patent: 3926426 (1975-12-01), Toriumi et al.
patent: 4043661 (1977-08-01), Yamada et al.
patent: 4191455 (1980-03-01), Watanabe et al.

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