Recording head for magneto-optical information recording apparat

Details Recording head for magneto-optical information recording apparat Recording head for magneto-optical information recording apparat

1986-09-08

1989-06-27

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, 360 59, 365122, G11B 1114, G11B 1304

Patent

active

048436003

ABSTRACT:
A magneto-optical information recording apparatus comprises an objective for condensing a light beam on a magneto-optical recording medium, a bias magnetic field producing device provided on the opposite side of the objective with respect to the magneto-optical recording medium and applying a magnetic field from outside to the magneto-optical recording medium near the condensed point of the light beam, and a protective outer frame containing the objective therein and having an opening for transmitting the light beam therethrough at a location opposed to the magneto-optical recording medium, at least a portion of the protective outer frame being formed of a ferromagnetic material.

REFERENCES:
patent: 4340914 (1982-07-01), Hanaoka

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