Magnetic head having a read/write coil with a d.c. current throu

Details Magnetic head having a read/write coil with a d.c. current throu Magnetic head having a read/write coil with a d.c. current throu

1987-09-15

1988-11-22

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Head

Erase

360 66, 360123, 360126, G11B 5127, G11B 503, G11B 5147, G11B 517

Patent

active

047870028

ABSTRACT:
A magnetic disk drive apparatus is disclosed including a read and write head having a read and write coil and an erase head having an erase coil at the opposite sides of the read and write head for erasing data at the both sides of the written data track, the improvement includes a leakage magnetic flux cancelling coil wound on the read and write head which is energized with a d.c. current for cancelling the leakage magnetic flux from the erase head when the erase coil is energized with a d.c. current.

REFERENCES:
patent: 4680657 (1987-07-01), Naito
IBM Technical Discl. Bull., vol. 18, No. 9, Feb. 76, pp. 3004-3005, "Single-Gap Head for Record and Tunnel Erasing", by A. J. Bowen.

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