Magnetic head for use in vertical recording

Details Magnetic head for use in vertical recording Magnetic head for use in vertical recording

1987-04-16

1989-02-28

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Head

Core

360122, G11B 5127

Patent

active

048091111

ABSTRACT:
Magnetic head (1) for use in vertical recording comprising two protective blocks (5, 7) which jointly constitute a contact surface (S), and a magnetic pole (3) in the form of a thin film of a soft magnetic material enclosed between the two protective blocks. The magnetic head also comprises a winding aperture (13) and a coil W. At least one (7) of the two protective blocks is formed from one piece of ferrite having a high magnetostriction, a first portion (7A) consisting of a ferrite having a high magnetic permeability and a second portion (7B) consisting of a ferrite having only a low magnetic permeability.

REFERENCES:
patent: 4604670 (1986-08-01), Visser
patent: 4635153 (1987-01-01), Shimamura et al.
patent: 4670807 (1987-06-01), Gortes et al.
Grimm, "Ferrite Treatment", IBM TDB, Oct. 1975, vol. 18, No. 5, p. 1311.

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