Composite read-while-write magnetic head assembly

Details Composite read-while-write magnetic head assembly Composite read-while-write magnetic head assembly

1991-06-20

1993-06-08

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360121, G11B 5127, G11B 5265

Patent

active

052184986

ABSTRACT:
A composite read-while-write magnetic head assembly includes a substrate having first and second opposing planar surfaces. An inductive record head of the thin film type is situated on the first planar surface, and a playback head of the magnetoresistive (MR) type is located on the second planar surface, in alignment with the record head. With an MR playback head and a thin film record head, the alignment between the two heads is limited by the precision of a photolithographic process, which is very accurate relative to the width of even the most narrow record track. Furthermore, the substrate is selected to be of sufficient thickness to isolate the MR playback head from the effects of fields created by the inductive record head, thereby eliminating crosstalk between the two heads.

REFERENCES:
patent: 5027245 (1991-06-01), Nagata
patent: 5068760 (1991-11-01), Kira

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