Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Tape record
Patent
1974-12-20
1976-06-01
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Tape record
360132, 242 5519A, G11B 2304, G11B 1558, G11B 578
Patent
active
039613704
ABSTRACT:
A cartridge containing a single tape reel is inserted into a rapid access tape storage device. The cartridge comprises a tapered-wall vacuum column and a friction surface disposed opposite the vacuum column. When the tape is acted upon by the restraining force of the frictional surface, said restraining force being transferred by an endless intermediate belt which loosely encircles the tape, the outer bale of tape is restrained. Reel rotation causes the reel layers to quickly transfer either away from the hub or toward the hub dependent on the direction of reel rotation. By applying a vacuum to the vacuum column, the tape is disengaged from the influence of the frictional surface and the separation widens adjacent to the vacuum column. A magnetic transducer is then inserted into the separation and data processing occurs with the transducer engaging the exposed magnetic layer of tape near the reel hub.
REFERENCES:
patent: 2482428 (1949-09-01), Miller
patent: 3121863 (1964-02-01), Lovell
patent: 3352506 (1967-11-01), Bodrov et al.
patent: 3588377 (1971-06-01), Meyer
patent: 3619625 (1971-11-01), Wood
patent: 3773272 (1973-11-01), Wallace
patent: 3782662 (1974-01-01), Miller
Cockburn Joscelyn G.
Eddleman Alfred H.
International Business Machines - Corporation
Sirr Francis A.
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