Metal working – Method of mechanical manufacture – Electrical device making
Patent
1992-04-01
1994-04-12
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
360120, G11B 542
Patent
active
053014189
ABSTRACT:
A method of manufacturing one or more magnetic heads starts from a substrate (11) on which a first magnetic layer (13) is provided. A recess (15) is formed in this layer at the location of a transducing gap to be formed, after which a gap layer (19) is provided on a bounding wall (17) of the recess. Subsequently, the recess is filled with a second magnetic layer (23) and a counterblock (31) is provided on the layers after surface-polishing. Finally, a winding aperture is provided.
REFERENCES:
patent: 4947541 (1990-08-01), Toyoda et al.
patent: 5042140 (1991-08-01), Coutellier et al.
patent: 5167062 (1992-12-01), Castera et al.
IEEE Transactions on Magnetics; vol. 26, No. 5, Sep. 1990.
Dirne Franciscus W. A.
Giesbers Jacobus B.
Ruigrok Jacobus J. M.
Severijns Adrianus P.
Fox John C.
Hall Carl E.
U.S. Philips Corporation
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