JPS6442039A - Magneto-optical recording medium - Google Patents

Magneto-optical recording medium

Info

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
Application number
JP19749587A
Other languages
Japanese (ja)
Other versions
JP2546844B2 (en
Inventor
Toshio Kazama
Kazuo Nishizawa
Kenji Enomoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to JP62197495A priority Critical patent/JP2546844B2/en
Publication of JPS6442039A publication Critical patent/JPS6442039A/en
Application granted granted Critical
Publication of JP2546844B2 publication Critical patent/JP2546844B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
JP62197495A 1987-08-07 1987-08-07 Magneto-optical recording medium Expired - Fee Related JP2546844B2 (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05347047A (en) * 1993-03-04 1993-12-27 Sony Corp Magneto-optical recording device

Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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