Dynamic magnetic information storage or retrieval – General recording or reproducing – Thermomagnetic recording or transducers
Patent
1980-03-24
1982-07-20
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Thermomagnetic recording or transducers
346159, G11B 502
Patent
active
043409148
ABSTRACT:
A heat magnetic recording and reproducing apparatus is disclosed. The apparatus comprises a record medium running in a predetermined direction, a means for generating a laser light beam for locally heating the medium, a magnetic field generating device for generating a magnetic field at the heated portion, an information recording means provided in opposition to the magnetic field generating device and having an auxiliary magnetic pole piece for focusing a magnetic flux from the magnetic field generating device into at least the heated portion, a means provided at a front stage of the information recording means to the running of the medium for generating a laser light beam for locally heating the medium, a magnetic field generating device for generating a magnetic field at the heated portion, and an information erasing means having an auxiliary magnetic pole piece for focusing a magnetic flux from the magnetic field generating device into the heated portion.
REFERENCES:
patent: 3230517 (1966-01-01), Supernowicz
patent: 3453646 (1969-07-01), Speliotis et al.
patent: 3626114 (1971-12-01), Lewicki
Canney Vincent P.
Olympus Optical Co,. Ltd.
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