Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1980-06-02
1987-06-02
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360133, G11B 2302, G11B 2504
Patent
active
046708030
ABSTRACT:
Improved disk pack media for data storage is illustrated as comprising a pack of flexible magnetic recording disks which may be partitioned "end-wise".
In one embodiment the disks are perforated for partitioning and also stacked in a different respective rotational orientation to facilitate end-wise partitioning. The disks are hole-encoded and either cut in different hole patterns, or else cut in a common hole pattern and stacked to dispose each in a unique rotational "misregistration" relative to all others--the result being to generate sets of "partition bores" permitting associated automatic apparatus to selectively partition the pack and expose any desired disk-side for operation thereon.
In another embodiment the disks are stacked between apertured spacers about a hollow spindle, the spacers and disks being partition-apertured and stacked to generate a set of partition bores. These bores cooperate with selectably rotatable gas jet means co-rotated on the spindle and adjustably rotated relative the pack to register with a selected one of these bores.
REFERENCES:
patent: 1360617 (1920-11-01), Brand
patent: 3994017 (1976-11-01), Barkhuff et al.
patent: 4086640 (1978-04-01), Ragle et al.
patent: 4086641 (1978-04-01), Ragle et al.
patent: 4129891 (1978-12-01), Ragle et al.
patent: 4136368 (1979-01-01), DeMoss et al.
patent: 4167029 (1979-09-01), Ragle et al.
IBM/TDB, vol. 16, No. 12, May '74, p. 3383, "Record Disk Assembly" by Griffiths et al.
IBM/TDB, vol. 19, No. 12, May '77, pp. 4717-4719, "Controlled Slope Flexible Disk Pack" by Wanek.
IBM/TDB, vol. 17, No. 1, Jun. '74, pp. 5-6, "Self-Ventilating Storage Disk Apparatus" by Griffiths et al.
IBM/TDB, vol. 19, No. 1, Jun. '76, p. 171, "Flexible Disk Structure" by Orlando.
DeMoss Dean L.
Ragle Herbert U.
Burroughs Corporation
Cass Nathan
McCormack John J.
Peterson Kevin R.
Wolff John H.
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