Thin-film magnetic head

Details Thin-film magnetic head Thin-film magnetic head

1991-05-08

1993-10-12

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Core

G11B 547

Patent

active

052531341

ABSTRACT:
A thin-film magnetic head comprising a substrate formed of a material having an electric resistivity of not higher than 150 ohm-cm and an electromagnetic transducer unit, the transducer unit is formed on the substrate and comprises a lower magnetic film directly attached to the substrate, a magnetic gap layer, a coil conductor layer, at least an insulating layer and an upper magnetic layer. The lower magnetic film is formed as a flat surface extending over the coil conductor layer, and parts, neighboring the magnetic gap region, of the end face directed to the recording medium are receded with the insulating layer being inorganic material.

REFERENCES:
patent: 4380784 (1983-04-01), Desserre
patent: 4807076 (1989-02-01), Nakashima
patent: 4953051 (1990-08-01), Wada

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