JPS6442039A - Magneto-optical recording medium - Google Patents
Magneto-optical recording mediumInfo
- Publication number
- JPS6442039A JPS6442039A JP19749587A JP19749587A JPS6442039A JP S6442039 A JPS6442039 A JP S6442039A JP 19749587 A JP19749587 A JP 19749587A JP 19749587 A JP19749587 A JP 19749587A JP S6442039 A JPS6442039 A JP S6442039A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- electromagnet
- magnetic
- protective layer
- lubricating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
Abstract
PURPOSE:To enable the sufficient impression of the magnetic field from an electromagnet with small current to the beam-irradiated part of a magnetic film by forming a lubricating layer which is capable of coming into contact with the electromagnet on the surface of a protective layer. CONSTITUTION:The magnetic layer 3, a recording layer 4 and the protective layer 5 are laminated and formed on a substrate 2 and the lubricating layer 11 is formed on the surface of the protective layer 5. Namely, this lubricating layer 11 is provided in order to be brought into contact with the electromagnet 8 while the effect of the protective layer 5 is maintained. The electromagnet 8 can, therefore, be brought into direct contact with the lubricating layer 11 and the spacing between the electromagnet 8 and the magnetic layer 3 is reduced to more than half the spacing of the conventional medium. The magnetic field from the electromagnet 8 is thereby impressed sufficiently with the small current to the part of the magnetic layer 3 projected with the focused laser beam 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62197495A JP2546844B2 (en) | 1987-08-07 | 1987-08-07 | Magneto-optical recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62197495A JP2546844B2 (en) | 1987-08-07 | 1987-08-07 | Magneto-optical recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6442039A true JPS6442039A (en) | 1989-02-14 |
JP2546844B2 JP2546844B2 (en) | 1996-10-23 |
Family
ID=16375422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62197495A Expired - Fee Related JP2546844B2 (en) | 1987-08-07 | 1987-08-07 | Magneto-optical recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2546844B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05347047A (en) * | 1993-03-04 | 1993-12-27 | Sony Corp | Magneto-optical recording device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57130235A (en) * | 1981-02-03 | 1982-08-12 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS5857632A (en) * | 1981-10-01 | 1983-04-05 | Nec Corp | Flexible magnetic recording medium |
JPS58175136A (en) * | 1982-04-08 | 1983-10-14 | Nippon Telegr & Teleph Corp <Ntt> | Surface lubricant for magnetic recording medium |
JPS61131231A (en) * | 1984-11-30 | 1986-06-18 | Toshiba Corp | Magnetic recording medium |
JPS6398857A (en) * | 1986-10-16 | 1988-04-30 | Fujitsu Ltd | Magneto-optical disk |
-
1987
- 1987-08-07 JP JP62197495A patent/JP2546844B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57130235A (en) * | 1981-02-03 | 1982-08-12 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS5857632A (en) * | 1981-10-01 | 1983-04-05 | Nec Corp | Flexible magnetic recording medium |
JPS58175136A (en) * | 1982-04-08 | 1983-10-14 | Nippon Telegr & Teleph Corp <Ntt> | Surface lubricant for magnetic recording medium |
JPS61131231A (en) * | 1984-11-30 | 1986-06-18 | Toshiba Corp | Magnetic recording medium |
JPS6398857A (en) * | 1986-10-16 | 1988-04-30 | Fujitsu Ltd | Magneto-optical disk |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05347047A (en) * | 1993-03-04 | 1993-12-27 | Sony Corp | Magneto-optical recording device |
Also Published As
Publication number | Publication date |
---|---|
JP2546844B2 (en) | 1996-10-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |