Magnetic card reader

Details Magnetic card reader Magnetic card reader

1976-03-19

1977-12-06

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Modulating or demodulating

Frequency

360 61, 360 69, G11B 1560, G11B 1512, G11B 1902

Patent

active

040620506

ABSTRACT:
A card reader is provided which includes backup means for urging a coded region of a magnetic card against a transducer in a proper orientation and with a proper pressure. The backup means is disposed opposite to the transducer on the other side of a card guide slot, and includes a ball head having a spherical surface which is normally biased by a spring to its operative position extending into the guide slot in which the gap defined between the transducer and the ball head is less than the thickness of a card. As the card is moved through the guide slot, the ball head is moved by the card away from the transducer against the resilience of the spring, but provides a single point backup of the card against the transducer before such movement in the opposite direction occurs.

REFERENCES:
patent: 3157868 (1964-11-01), Buslik
patent: 3648023 (1972-03-01), Bach
patent: 3712973 (1973-01-01), Karl
patent: 3898687 (1975-08-01), Schmidt
patent: 3940796 (1976-02-01), Haun et al.
patent: 3947663 (1976-03-01), De Sandre et al.

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