Magneto-optical recorder with small-sized, low-powered electroma

Details Magneto-optical recorder with small-sized, low-powered electroma Magneto-optical recorder with small-sized, low-powered electroma

1986-11-20

1989-02-07

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

048036749

ABSTRACT:
A magneto-optical recorder is disclosed in which an external magnetic field required for recording and erasing can be produced by a small-sized electromagnetic coil having a small magneto-motive force. The electromagnetic coil is made up of a magnetic core and a coil winding, and the outer peripheral portion of the coil winding other than that peripheral portion thereof which confronts a recording medium, is covered by a core material. A magnetic field emanating from the electromagnetic coil spreads in a narrow space, and can be applied to the recording medium with large intensity even when the electromagnetic coil has a small magneto-motive force. In the recorder, a magnetic body is disposed such that the electromagnetic coil and the magnetic body face each other, to concentrate the magnetic field generated by the electromagnetic coil, to the vicinity of that portion of the recording medium which is irradiated with a light spot. The length of the electromagnetic coil is made equal to or greater than the length of the recording area of the recording medium, to apply a substantially uniform magnetic field to the whole recording area without moving the electromagnetic coil.

REFERENCES:
patent: 2276200 (1942-03-01), Kauffmann
patent: 2591070 (1952-04-01), Howell
patent: 2702835 (1955-02-01), Camras
patent: 4414554 (1983-11-01), Springer
patent: 4513406 (1985-04-01), Ishihara
patent: 4644432 (1987-02-01), Heim
patent: 4667260 (1987-05-01), Perlow et al.

Affiliated with

Also associated with

Rating

Magneto-optical recorder with small-sized, low-powered electroma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magneto-optical recorder with small-sized, low-powered electroma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-optical recorder with small-sized, low-powered electroma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1089322