Metal working – Method of mechanical manufacture – Electrical device making
Patent
1989-03-13
1991-05-07
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
360103, 360122, G11B 542
Patent
active
050125729
ABSTRACT:
A head core slider for a rigid magnetic disk drive, and a method of producing the same. The core slider includes a slider body, a track portion, a yoke portion and a narrow stepped portion. The slider body has two spaced-apart parallel air bearing portions, and the track portion is formed integrally with at least one of the bearing portions, so as to extend from one end of the bearing portion in the direction of length of the bearing portion. The track portion has the same height as the bearing portion, and a width smaller than that of the bearing portion. The yoke portion is formed integrally with the track portion, so as to extend from one end of the track portion remote from the bearing portion, and has a protrusion of the same height as the track portion. The width of the protrusion is smaller than that of the bearing portion and larger than that of the track portion. The stepped portion is formed so as to surround at least the track portion and the protrusion of the yoke portion, and has a surface which is spaced apart from top surfaces of the track portion and the protrusion by a distance nearly equal to the predetermined height. The bearing, track and stepped portions and the protrusion are formed by etching the surfaces of two bonded ferrite blocks, through an etching mask pattern corresponding to the desired configuration to be formed.
REFERENCES:
patent: 3514851 (1970-06-01), Perkin et al.
patent: 4078300 (1978-03-01), Lazzari
patent: 4100584 (1978-07-01), Behr et al.
Matsuzawa Soichiro
Takeya Fuminori
Applied Magnetics Corporation
Hall Carl E.
NGK Insulators Ltd.
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