Metal working – Method of mechanical manufacture – Electrical device making
Patent
1989-06-16
1990-07-10
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
360119, 360122, G11B 542
Patent
active
049398369
ABSTRACT:
A method for fabricating magnetic recording/reading heads. A substrate made of magnetic material is provided with a groove of a predetermined width. The surface of the substrate bearing the groove becomes the active face for the magnetic head. The face of the substrate having the groove is ground, and then filled with a non-magnetic material to form a gap. The filling causes the non-magnetic material to jut out of the groove. The material which juts out is ground off until the level of the substance is reached.
REFERENCES:
patent: 3332145 (1967-07-01), Klindenberg
patent: 4821403 (1989-04-01), Rolland et al.
Patent Abstracts of Japan, vol. 10, No. 195 (P-475) [2251], 9 Juillet 1986; & JP-A-61 39 207 (Victor Co. of Japan Ltd.) 25-02-1986.
Patent Abstracts of Japan, vol. 6, No. 2 (P-96) [880], 8 Janvier 1982; & JP-A-56 127 916 (ALPS Denki K.K.) 07-10-1981.
Patent Abstracts of Japan, vol. 11, No. 375 (P-644) [2822], 8, Dec. 1987; & JP-A-62 145 515 (Seiko Epson Corp.) 29-06-1987.
Patent Abstracts of Japan, vol. 11, No. 253 (P-644) [2822], 8 Dec. 1987; & JP-A-62 145 515 (Seiko Epson Corp.), 29-06-1987.
Bussac Claude
Coutellier Jean-Marc
Meunier Paul-Louis
Penot Alain
Compagnie Europeenne de Composants Electroniques - LCC
Hall Carl E.
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