Title:
METHOD FOR MANUFACTURING MAGNETO-OPTICAL RECORDING MEDIUM
Document Type and Number:
Japanese Patent JP3631194
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To manufacture a magneto-optical recording medium in which the recording density and the transfer speed can be drastically improved and also a reproducing device can be miniaturized.
SOLUTION: The method for manufacturing the magneto-optical recording medium where a recording magnetic domain is extended by moving a magnetic barrier along an information track to reproduce information is provided with a layer forming stage and an annealing stage. In the layer forming stage, at least a first magnetic layer (11) which contributes to information reproducing and where the magnetic barrier is moved, a third magnetic layer (13) where the recording magnetic domain corresponding to information is held, and a second magnetic layer (12) which is arranged between both layers (11) and (13) and has a Curie point lower than those of both layers are formed in this order; and in the annealing stage, parts between adjacent information tracks are irradiated with laser light of a high output, and magnetic layers existing between information tracks are degenerated to cut magnetic coupling between magnetic layers of adjacent information tracks.
More Like This:
| JPH09107144 | DETERIORATION JUDGMENT CIRCUIT FOR LASER DIODE |
| JP2001266444 | RECORDING MEDIUM DRIVE |
| JP3306762 | MAGNETO-OPTICAL RECORDING MEDIUM |
Inventors:
Swan power
Application Number:
JP2001347591A
Publication Date:
March 23, 2005
Filing Date:
April 02, 1993
Export Citation:
Assignee:
Canon Inc
International Classes:
G11B11/105; (IPC1-7): G11B11/105
Domestic Patent References:
| JP1143041A | ||||
| JP2227844A | ||||
| JP63148445A |
Attorney, Agent or Firm:
Akio Miyazaki
Shinichi Iwata
Masaaki Ogata
Nobuyuki Kaneda
Katsuhiro Ito
Ishibashi Masayuki
Shinichi Iwata
Masaaki Ogata
Nobuyuki Kaneda
Katsuhiro Ito
Ishibashi Masayuki