Method a fabricating a magnetic head

Metal working – Method of mechanical manufacture – Electrical device making

Reexamination Certificate

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C029S603070, C029S603140, C029S603150, C029S603160, C029S02600B, C216S065000, C360S122000, C360S125020, C360S125330, C360S125330, C360S128000

Reexamination Certificate

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06912769

ABSTRACT:
A magnetic head is configured by forming a thin-film-shaped magnetic element on top of a thin film that is provided parallel to a medium-facing surface. An aperture is formed in the thin film, and part of a main magnetic pole is formed to have a tip portion that protrudes into that aperture. This configuration makes it possible to impose highly accurate control over the amount by which thin-film-shaped magnetic elements are recessed from the medium-facing surface, while simultaneously exerting accurate control over the amount of protrusion of the main magnetic pole tip portion by making the thickness of the thin film extremely small. As a result, the recording flux strength at the main magnetic pole tip portion can be increased to the ultimate value thereof, making it possible to supply a head that can record on a high retention force medium suitable for higher densities.

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“Development of a self-peeling suspension for non-crash, non-stick and low fly-height”; Hatamura, Y.; Yanabe, S.; Ishimaru, N. Shinohara, T.; Ito, M.; Magnetics, IEEE Transactions on, vol.: 26, Issue: Sep. 1990; pp.: 2484-2486.
Mine et al., “Perpendicular Recording Characteristics of Single Pole Thin Film Head,” Nov. 1991, IEEE Transactions on Magnetics, vol. 27, No. 6, pp. 4930-4932.

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