Core slider for magnetic disk, having opposed recesses defining

Details Core slider for magnetic disk, having opposed recesses defining Core slider for magnetic disk, having opposed recesses defining

1992-02-10

1997-10-07

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360119, G11B 560, G11B 523

Patent

active

056754531

ABSTRACT:
A magnetic head core slider including an air bearing and a core portion with a magnetic gap provided adjacent one of lengthwise opposite ends of the air bearing. A preliminary track is defined by preliminary width-defining grooves such that the preliminary track extends across the magnetic gap in the direction of extension of the air bearing, each groove having a depth larger than the depth of the magnetic gap. An effective track is defined by a pair of opposed final width-defining recesses formed adjacent to the magnetic gap such that the effective track extends across the magnetic gap in the direction of extension of the air bearing. The length and width of the effective track are smaller than those of the preliminary track, and the width of the effective track determines the nominal width of the magnetic gap. Each recess has a depth smaller than that of the preliminary width-defining grooves but larger than that of the magnetic gap. Also disclosed is a process of fabricating the head core slider.

REFERENCES:
patent: 4425701 (1984-01-01), Takahashi et al.
patent: 4948460 (1990-08-01), Sandaiji et al.
patent: 5003688 (1991-04-01), Terada et al.
patent: 5012572 (1991-05-01), Matsuzawa et al.
patent: 5020213 (1991-06-01), Aronoff et al.
patent: 5105529 (1992-04-01), Yasar et al.
Patent Abstracts of Japan vol. 11, No. 194 (P-558) Jun. 23, 1987 & JP-A-62,018,615 (NEC Corp.) Jan. 27, 1987.
Patent Abstracts of Japan vol. 14, No. 577 (P-1146) Dec. 21, 1990 & JP-A-2,247,815 (NGK Insulators) Oct. 3, 1990.

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