Method of manufacturing a magnetic head by photo-etching

Details Method of manufacturing a magnetic head by photo-etching Method of manufacturing a magnetic head by photo-etching

1976-07-23

1980-09-23

Kimlin, Edward C.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

156656, 430313, 430316, 430318, 430319, 430323, G03C 500

Patent

active

042244005

ABSTRACT:
A method of manufacturing a magnetic head wherein a pattern is formed in a nickel-iron layer by means of a photo-etching process. The nickel-iron layer is provided with an auxiliary layer of titanium, titanium oxide or silicon oxide and with a photolacquer layer in a pattern which corresponds to the pattern desired in the nickel-iron layer. The lacquer layer pattern does not cover a part of the auxiliary layer and serves as an etching mask for the simultaneous etching of the auxiliary layer and the nickel-iron layer.

REFERENCES:
patent: 3700508 (1972-10-01), Keen
patent: 3808070 (1974-04-01), Jordan
patent: 3842490 (1974-10-01), Seales

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