Process and apparatus for simultaneous erasure and recording in

Details Process and apparatus for simultaneous erasure and recording in Process and apparatus for simultaneous erasure and recording in

1987-12-08

1989-08-01

Faber, Alan

Dynamic information storage or retrieval

With storage medium cleaning or electrostatic chanrge...

By charge leakage

369100, 360 59, 365122, G11B 1112, G11B 1304, G11B 502

Patent

active

048539120

ABSTRACT:
A magneto-optical recording process is produced by irradiating a recording track of a recording medium, in the course of movement thereof, with a main light beam of intensity sufficient for heating the medium to a temperature at which the coercive force thereof is reduced to zero or a very small value in a continuous manner during the recording operation and irradiating a separating area with a subsidiary beam of a modulated intensity, thereby modulating the vertical magnetization of said separating area. A floating magnetic field generated by the thus modulated vertical magnetization generates magnetic fields of mutually different directions, thus forming a record bit on the recording track.

REFERENCES:
patent: 3983317 (1976-09-01), Glorioso
patent: 4417290 (1983-11-01), Tanaka et al.
patent: 4472748 (1984-09-01), Kato et al.
patent: 4495530 (1985-01-01), Yanagida
patent: 4566088 (1986-01-01), Yoshida et al.
patent: 4573149 (1986-02-01), Deguchi et al.
patent: 4612587 (1986-09-01), Kaneko et al.
patent: 4649519 (1987-03-01), Sun et al.
patent: 4701881 (1987-10-01), Tanaka et al.
"Mag. Process of Exchange-Coupled Ferrimagnetic Double-Layered Films", Jap. Journal of Applied Physics, vol. 20, No. 11, Nov./1981, pp. 2089-2095.
Hansen "New Magneto-Optic Memory Concept Based on Compensation Wall Domains", Appl. Phys. Lett., vol. 23, No. 10, pp. 576-578, Nov. 15, 1973.
Nikon, "Magnet-Optic Memories Begin to Look Like a Good Bet", Electronics, Apr. 16, 1987.

Affiliated with

Also associated with

Rating

Process and apparatus for simultaneous erasure and recording in does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and apparatus for simultaneous erasure and recording in , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for simultaneous erasure and recording in will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-137215