Magnetic head having reinforcing block

Details Magnetic head having reinforcing block Magnetic head having reinforcing block

1988-02-11

1990-05-15

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Core

360122, 360125, G11B 516, G11B 522

Patent

active

049262769

ABSTRACT:
A magnetic head is disclosed. The magnetic head has a block which is formed of a first magnetic material in which a groove for a winding is formed, a first magnetic film which is deposited on a surface of the block in which the groove is formed and is formed of a second magnetic material having a higher saturation magnetic flux density than that of the first magnetic material, a nonmagnetic film which is formed on the first magnetic film and serves as a magnetic gap, a second magnetic film which is deposited on the nonmagnetic film and is formed of the second magnetic material, and a reinforcing block. A portion of the reinforcing block on the side of a magnetic recording medium slide surface is formed of a nonmagnetic material, and the other portion is formed of a magnetic material. A magnetic material-side boundary portion between the nonmagnetic and magnetic materials is inclined to form an acute angle with the nonmagnetic film.

REFERENCES:
patent: 4291354 (1981-09-01), Chase
patent: 4638391 (1987-01-01), Hatanai et al.
patent: 4667260 (1987-05-01), Perlov et al.
patent: 4787004 (1988-11-01), Akiho et al.
patent: 4809111 (1989-02-01), Zieren

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