Method of producing a magnetic head

Details Method of producing a magnetic head Method of producing a magnetic head

1995-06-05

1998-06-09

Vo, Peter

Metal working

Method of mechanical manufacture

Electrical device making

2960318, 2960321, 216 22, 216 65, 360120, 360127, G11B 5127, G11B 5235

Patent

active

057617899

ABSTRACT:
A method of making a magnetic head comprising: a first step of butting projection end faces of a pair of magnetic cores each of which is previously machined into a convex shape, through a magnetic gap member; a second step of forming notches which reach a winding groove, at said butted projection end faces of said magnetic cores by an electric discharge machining process, thereby regulating a track width; and a third step of filling under heat treatment glass into grooves at two sides of said pair of convex magnetic cores and said notches. When the magnetic head is used, a magnetic recording/reproduction apparatus which is suitable for high density recording such as a digital VTR is provided.

REFERENCES:
patent: 3668775 (1972-06-01), Morita et al.
patent: 4110902 (1978-09-01), Tamura et al.
patent: 4425701 (1984-01-01), Takahashi et al.
patent: 4682256 (1987-07-01), Ayabe
patent: 4751779 (1988-06-01), Nagatomo et al.
patent: 5208965 (1993-05-01), Ozeki et al.
patent: 5210668 (1993-05-01), Sillen et al.

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