Partitionable portable flexible disk pack

Dynamic magnetic information storage or retrieval – Record medium – In container

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360 99, 2091105, G11B 2302, G11B 2504

Patent

active

040866416

ABSTRACT:
Improved disk pack media for data storage illustrated as comprising a pack of flexible magnetic recording disks perforated for partitioning and adapted for stacking each in a different respective rotational orientation to facilitate partitioning. All disks are hole-encoded in a common pattern, then stacked to dispose each in a unique rotational "misregistration" relative to all others -- thereby opening-up and/or closing-off adjacent "partition bores" and permitting associated automatic apparatus to selectively partition the pack and expose any desired disk-side for operation thereon.

REFERENCES:
patent: 1360617 (1920-11-01), Brand
patent: 3931644 (1976-01-01), Ward
patent: 3947885 (1976-03-01), McGinnis et al.
patent: 3961656 (1976-06-01), Aggarwal
IBM Technical Disclosure Bulletin, vol. 19, No. 1, June 1976, p. 171.

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