Process for producing magnetic head

Details Process for producing magnetic head Process for producing magnetic head

1988-04-15

1989-03-28

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

360120, G11B 542

Patent

active

048151971

ABSTRACT:
A process for producing a magnetic head having a precisely defined recording width but which can be produced using simple process steps. Track width controlling grooves are formed in at least one of two core block halves made of a magnetic material. A thin film of a nommagnetic material, which serves as a gap spacer, is deposited on the bottoms of the track width controlling grooves and portions therebetween. A thin film layer of a metallic magnetic material is formed on the nonmagnetic thin film, and a thin film layer of a metallic magnetic material is formed on the surface of the other core to be brought into abutment against portions between the track width controlling grooves. The two core halves are then joined to form a core block with the thin film of metallic magnetic material on one core block half facing the thin film of metallic magnetic material on the other core block half. The thin films of metallic magnetic material are then etched away from all areas except where they contact each other as a result of the abutment of the two core block halves.

REFERENCES:
patent: 3479738 (1969-11-01), Hanak
patent: 4704788 (1987-11-01), Eckstein
patent: 4769898 (1988-09-01), Ono et al.

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