Stock material or miscellaneous articles – Composite – Of inorganic material
Patent
1997-07-18
1999-08-03
Zimmerman, John J.
Stock material or miscellaneous articles
Composite
Of inorganic material
428 643, 428694EL, 428694RE, 369 13, G11B 500, G11B 562
Patent
active
059323647
ABSTRACT:
A magneto-optical recording medium according to the present invention comprises a recording layer in which information is to be recorded; and a reproducing layer to and from which information recorded in the recording layer is to be transferred and read out. The magneto-optical recording medium is arranged such that, at room temperature, the width of a stable magnetic domain of the reproducing layer is wider than the width of the recorded magnetic domain formed in the recording layer at the time when information has been recorded therein, and that, at temperature exceeding a predetermined value, the relationship between these widths is reversed. Accordingly, upon irradiation of a light beam, there is transferred and reproduced, to and from the reproducing layer, the magnetic domain of only that portion of the recording layer corresponding to the center portion of the light beam where the temperature of the reproducing layer exceeds the predetermined value. It is therefore possible to provide a magneto-optical recording medium in which information can be recorded with high density and which is suitable for recording image information or the like for which a large recording capacity is required.
REFERENCES:
patent: 4794560 (1988-12-01), Bell et al.
patent: 4842956 (1989-06-01), Kobayashi
patent: 4871614 (1989-10-01), Kobayashi
patent: 5018119 (1991-05-01), Aratani et al.
patent: 5094925 (1992-03-01), Ise et al.
patent: 5420833 (1995-05-01), Tanaka et al.
patent: 5428585 (1995-06-01), Hirokane et al.
patent: 5452272 (1995-09-01), Murakami et al.
patent: 5633838 (1997-05-01), Hirokane
patent: 5640374 (1997-06-01), Hirokane
patent: 5659537 (1997-08-01), Hirokane
patent: 5684764 (1997-11-01), Hirokane
Hirokane Junji
Katayama Hiroyuki
Ohta Kenji
Takahashi Akira
Conlin David G.
Daley, Jr. William J.
LaVilla Michael
Sharp Kabushiki Kaisha
Zimmerman John J.
LandOfFree
Magneto-optical recording medium, method of recording and reprod 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 recording medium, method of recording and reprod, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-optical recording medium, method of recording and reprod will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-848324