Methods for manufacturing magnetic transducing heads

Details Methods for manufacturing magnetic transducing heads Methods for manufacturing magnetic transducing heads

1979-08-10

1981-02-10

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

G11B 542

Patent

active

042493013

ABSTRACT:
A method of forming a magnetic ferrite element for the core of a magnetic transducing head is disclosed in which spacers for determining the length of a non-magnetic gap are formed by providing a masking layer at locations on a surface of the element at which the spacers are required and eroding away the masking layer and the unmasked portions of the surface by an ion beam to produce a new surface having a spacer projecting at each of the locations by a distance determined by the relative rates of erosion of the ferrite and the masking material and by the predetermined thickness of the masking layer.

REFERENCES:
patent: 4045864 (1977-09-01), Morokuma et al.

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