Floppy disc magnetic head apparatus compatible with both horizon

Details Floppy disc magnetic head apparatus compatible with both horizon Floppy disc magnetic head apparatus compatible with both horizon

1987-03-31

1989-02-07

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360119, 360121, G11B 548

Patent

active

048035718

ABSTRACT:
In a horizontal recording medium, new information can be overwritten upon old information at a low recording density without erasing the medium. In a perpendicular recording medium, on the other hand, new information is recorded at a high recording density after having erased the medium. On the basis of the above features of the horizontal and perpendicular recording mediums with different recording densities, the apparatus comprises first magnetic head with a long gap for the horizontal recording medium, a second magnetic head with a short gap for the perpendicular recording medium, and a heat selector, in order to provide a magnetic recording and reproducing apparatus compatible with both high and low recording density mediums.

REFERENCES:
patent: 3812529 (1974-05-01), Yoichi
patent: 3882544 (1975-05-01), Hughes
patent: 4079426 (1978-03-01), Umeda et al.
patent: 4441132 (1984-04-01), Morita et al.
patent: 4466026 (1984-08-01), Miura et al.
patent: 4644432 (1987-02-01), Heim

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