Magnetic transducer

Details Magnetic transducer Magnetic transducer

1977-12-15

1979-05-29

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

G11B 516

Patent

active

041568826

ABSTRACT:
A magnetic transducer head has a plurality of magnetic laminations secured together in stacked relation to each other to form a magnetic core having a pair of pole faces disposed in spaced, facing relation to each other with a small gap therebetween and to define other surfaces of the core adjacent to the gap which are adapted for sliding engagement with the magnetic surface of a recording tape. Electrical coil means are inductively coupled to the core. Alternate magnetic laminations of the core incorporate materials of different magnetic and physical characteristics so that the laminations cooperate in determining the characteristics of the core. The materials of some laminations preferably display a relatively high maximum induction while other laminations incorporate materials having a relatively high initial permeability, thereby to facilitate use of the transducer both in recording and reproduction. Preferably the materials of some of the laminations have a relatively greater physical hardness than the materials of the other laminations to improve the wear characteristics of the core surfaces which are disposed in sliding engagement with the recording tape.

REFERENCES:
patent: 3610839 (1971-10-01), Sand
patent: 3673353 (1972-06-01), Tiemann et al.
patent: 3683126 (1972-08-01), Krause
patent: 3867368 (1975-02-01), Lazzari

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