Magnetic head

Details Magnetic head Magnetic head

1982-06-28

1984-02-28

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

G11B 512

Patent

active

044344465

ABSTRACT:
There is disclosed a magnetic head constructed with a core formed by butt-connecting a plurality of core halves, each having different magnetic flux density or magnetic permeability, and a winding wound around the core, wherein an intense magnetic field is created at the butt-connected portion. One of the core halves has a high magnetic permeability and the other has a high magnetic flux density so as to improve both the output characteristic and reproduction sensitivity of the magnetic head. Further, the core half having a higher magnetic flux density than the other is disposed at the side where a recording medium in motion leaves the head so that a satisfactory recording and erasing magnetic field may be imparted to the recording medium such as metal tape. Furthermore, the core is constructed with a combination of high hardness permalloy having different magnetic flux or magnetic permeability, or a combination of such high hardness permalley and sendust so as to reduce manufacturing cost of the magnetic head.

REFERENCES:
patent: 3303292 (1967-02-01), Bedell et al.
patent: 3480736 (1969-11-01), Johnson et al.
patent: 3686468 (1972-08-01), Garnier
patent: 3863268 (1975-01-01), Ikeda

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