Floppy disc read and write head having two separate read and wri

Details Floppy disc read and write head having two separate read and wri Floppy disc read and write head having two separate read and wri

1987-12-07

1990-06-12

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Plural gaps

360104, G11B 528

Patent

active

049337955

ABSTRACT:
A magnetic read/write head for a disc drive capable of both high density and low density read/write operations as measured in tracks per inch and employing a magnetic disc capable of having defined thereon a multiplicity of tracks per inch in the disc radial direction. The disc and head have radial and tangential lines of reference relative to each other. The head includes at least one slider having a magnetic high density read/write core gap and a magnetic low density read/write core gap offset relative to each other radially and tangentially on the slider, and a non-magnetic spacer positioned between the magnetic high denisty core gap and the magnetic low density core gap of the slider. Preferably there is provided a second slider having the same structure as described above, wherein the disc is positionable between the first and second sliders for read/write operations of the disc drive. In this embodiment, the high denisty core gap of the first slider is located opposite the non-magnetic spacer of the second slider, and the low density core gap of the first slider is located opposite the non-magnetic spacer of the second slider. Preferably, the low density core gaps of the first and second sliders are aligned along a common radial line and the high density core gaps of the first and second sliders are aligned in a line skewed a predetermined distance from the common radial line along which the low density core gaps of the first and second sliders are positioned.

REFERENCES:
patent: 4159493 (1979-06-01), Ohta et al.
patent: 4334252 (1982-06-01), Toriu
patent: 4414596 (1983-11-01), Nakamichi
patent: 4622614 (1986-11-01), Yamashita et al.
patent: 4805051 (1989-02-01), DeMarco et al.

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