Method for the production of integrated magnetic head structures

Details Method for the production of integrated magnetic head structures Method for the production of integrated magnetic head structures

1977-09-15

1980-03-11

Reynolds, Bruce A.

Electric heating

Metal heating

By arc

29603, B23K 900

Patent

active

041929853

ABSTRACT:
A method for a definitive fixing of the breadth of magnetic layers in the vicinity of the end face of a recording carrier, which breadth determines the track breadth, in which an integrated magnetic head structure is carried on a substrate and has a large number of thin magnetic, non-magnetic, insulating and electrically conductive layers stacked one upon an another, and in which originally broader magnetic layers are partially worn down by ion bombardment, the zones not to be worn down being first covered with a mask. Ion bombardment is carried out at right angles to the thin layers, i.e. at right angles to the plane of the substrate, with the mask suitably disposed.

REFERENCES:
patent: 3514851 (1970-06-01), Perkin et al.
patent: 3846842 (1974-11-01), Lazzari
patent: 4016601 (1977-04-01), Lazzari
patent: 4017965 (1977-04-01), Brutsch et al.
Electronics Review, 6/76 pp. 31 & 32.
Integrated Mag. Recording Heads, Lazzari et al. 3/71, Transactions on Magnetics, vol. Mag-7, #1, pp. 146-150.

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