High-speed magnetic tape duplicator apparatus having an array of

Details High-speed magnetic tape duplicator apparatus having an array of High-speed magnetic tape duplicator apparatus having an array of

1991-02-19

1993-12-21

Pascal, Robert J.

Dynamic magnetic information storage or retrieval

Record copying

Contact transfer

360 16, G11B 509

Patent

active

052725731

ABSTRACT:
An array of alternatingly polarized permanent magnets of equal pole strength, disposed in side by side relationship, provides a monotonically decreasing, spatially varying magnetic transfer field for a master and slave tape wrapping a rotatable capstan. Alternating flux-exiting and flux-returning pole faces of the magnets are disposed along a curvilinear plane adjacent to, but deviating from the tape wrap at the circumferential surface of the capstan in the direction of media movement. This arrangement subjects the slave tape to multiple cycles of an alternating transfer field of gradually diminishing strength as the tapes move through the transfer field.

REFERENCES:
patent: 3519760 (1970-07-01), Hatley
patent: 5179475 (1993-01-01), McClure
Magnetic Recording Handbook, Denis Mee & Eric Daniel 1989, pp. 959-968.

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