Method of making magnetic head sliders

Details Method of making magnetic head sliders Method of making magnetic head sliders

1984-08-06

1986-11-25

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

1566591, 156665, 360103, G11B 542

Patent

active

046240489

ABSTRACT:
For making rails in workpieces for magnetic head sliders for sensors of magnetizable media, anodic oxidation of highly pure aluminum substrates is applied. For that purpose, the respective surface of the substrates is covered with a mask cover which leaves uncovered the zones in the substrate surface area which are intended for the forming of rails. By means of anodic oxidation of the aluminum in the exposed regions, rail layer regions of oxide are formed which after the removal of the mask cover can themselves be used as an etching mask in order to provide a recessed region between two respective rails by means of chemical wet etching.

REFERENCES:
patent: 4226018 (1980-10-01), Nakanishi et al.
patent: 4333229 (1982-06-01), Ellenberger

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