Dynamic magnetic information storage or retrieval – Record transport with head moving during transducing – Tape record
Patent
1974-07-15
1976-06-01
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record transport with head moving during transducing
Tape record
360102, G11B 560, G11B 2104, G11B 552
Patent
active
039613690
ABSTRACT:
A rotating head magnetic tape recording apparatus wherein a helical wrap of magnetic recording tape is formed about a cylindrical mandrel and the headwheel. The headwheel is of a larger radius than the mandrel; thus the headwheel protrudes or penetrates beyond the adjacent mandrel surfaces. This headwheel penetration operates to (1) compensate for mandrel misalignment, if any, and (2) stress the tape in the localized track coincident with the headwheel's path. A magnetic head is mounted on the headwheel to protrude or penetrate radially outward therefrom. The head includes a surface profile causing; th head to fly relative to the tape's recording surface, i.e., a thin air film surrounds the head. The combination of the protruding headwheel and the protruding head produces a stable recording platform at the tape/head interface. The headwheel produces localized tape stress coincident with the headwheel's path. The head produces a moving tent of additional localized tape stress at the tape/head interface.
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Baumann Gerald W.
Fraser, Jr. Harvey R.
Hauke Francis E.
Cockburn Joscelyn G.
Eddleman Alfred H.
International Business Machines - Corporation
Sirr Francis A.
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