Head core slider having an air bearing surface of a particular c

Details Head core slider having an air bearing surface of a particular c Head core slider having an air bearing surface of a particular c

1990-11-20

1992-04-21

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360122, G11B 2120, G11B 5187

Patent

active

051073820

ABSTRACT:
A head core slider for a rigid magnetic disk drive, including 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), Periin et al.
patent: 4078300 (1978-03-01), Lazzari
patent: 4100584 (1978-07-01), Behr et al.
patent: 4555739 (1985-11-01), Le Van et al.
patent: 4605977 (1986-08-01), Matthews
patent: 4740853 (1988-04-01), Makae et al.
patent: 4897915 (1990-02-01), Ito

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