Dual magnetic head for reading and writing information at high a

Details Dual magnetic head for reading and writing information at high a Dual magnetic head for reading and writing information at high a

1991-03-29

1993-01-19

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Plural gaps

360118, 360128, G11B 5265, G11B 510

Patent

active

051811502

ABSTRACT:
A dual magnetic head capable of reducing unneccessary magnetic flux developed in erase cores. The dual magnetic head includes a first read/write core (30) having a first gap width (34) and extending in a track direction in which the tracks will be formed on a magnetic recording medium, a second read/write core (10) having a second read/write gap (14) with a width greater than the first gap width, and juxtaposed to the first read/write core (30) in a perpendicular direction to the track direction; and an erase core (20) having a pair of erase gaps (24, 25) located at opposite ends of the second read/write gap (14) with respect to the perpendicular direction, the erase core (20) being juxtaposed to the first read/write core (30) in the perpendicular direction and juxtaposed to the second read/write core (10) in the track direction, at least one of the facing surfaces of the erase core (20) which define the erase gaps (24, 25) therebetween being provided with an undulation. The undulation can be in the form of either a saw-tooth-like section or a waveform-like section.

REFERENCES:
patent: 5027244 (1991-06-01), Hayakawa
patent: 5041936 (1991-08-01), Hayakawa

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