JPH0513339B2 - - Google Patents
Info
- Publication number
- JPH0513339B2 JPH0513339B2 JP22874484A JP22874484A JPH0513339B2 JP H0513339 B2 JPH0513339 B2 JP H0513339B2 JP 22874484 A JP22874484 A JP 22874484A JP 22874484 A JP22874484 A JP 22874484A JP H0513339 B2 JPH0513339 B2 JP H0513339B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic recording
- recording layer
- magneto
- laser beam
- optical
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 15
- 239000010410 layer Substances 0.000 description 211
- 230000005415 magnetization Effects 0.000 description 36
- 239000000463 material Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 10
- 230000003287 optical effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000010287 polarization Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005374 Kerr effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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
- G11B11/10502—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 characterised by the transducing operation to be executed
- G11B11/10504—Recording
-
- 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
- G11B11/10502—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 characterised by the transducing operation to be executed
- G11B11/10515—Reproducing
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22874484A JPS61107553A (ja) | 1984-10-30 | 1984-10-30 | 光磁気再生装置 |
EP85307828A EP0180459B1 (en) | 1984-10-30 | 1985-10-29 | Magneto-optical memory medium and apparatus for writing and reading information on and from the medium |
US06/792,591 US4922454A (en) | 1984-10-30 | 1985-10-29 | Magneto-optical memory medium and apparatus for writing and reading information on and from the medium |
DE8585307828T DE3584945D1 (de) | 1984-10-30 | 1985-10-29 | Magnetooptisches speichermedium und geraet zum schreiben auf und lesen von dem medium. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22874484A JPS61107553A (ja) | 1984-10-30 | 1984-10-30 | 光磁気再生装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61107553A JPS61107553A (ja) | 1986-05-26 |
JPH0513339B2 true JPH0513339B2 (nl) | 1993-02-22 |
Family
ID=16881143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22874484A Granted JPS61107553A (ja) | 1984-10-30 | 1984-10-30 | 光磁気再生装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61107553A (nl) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0180459B1 (en) * | 1984-10-30 | 1991-12-18 | Brother Kogyo Kabushiki Kaisha | Magneto-optical memory medium and apparatus for writing and reading information on and from the medium |
JP2645549B2 (ja) * | 1986-03-14 | 1997-08-25 | 富士通株式会社 | 光磁気記録方法および装置 |
JP2679704B2 (ja) * | 1986-03-14 | 1997-11-19 | 富士通株式会社 | 光磁気記録装置および担体 |
JP2679705B2 (ja) * | 1986-03-14 | 1997-11-19 | 富士通株式会社 | 光磁気記録装置 |
JP2527649Y2 (ja) * | 1986-07-17 | 1997-03-05 | ブラザー工業株式会社 | 光磁気記録媒体 |
JPS63102031U (nl) * | 1986-12-22 | 1988-07-02 | ||
FR2656723B1 (fr) * | 1989-12-28 | 1995-07-21 | Thomson Consumer Electronics | Tete de lecture multipiste magneto-optique. |
WO1991015013A1 (en) * | 1990-03-24 | 1991-10-03 | Seiko Epson Corporation | Magnetooptic recording medium, and method of magnetooptic recording and reproduction |
US5420728A (en) * | 1990-03-24 | 1995-05-30 | Seiko Epson Corporation | Magneto-optical recording medium including a plurality of recording layers having different curie temperatures and method of recording and reading |
-
1984
- 1984-10-30 JP JP22874484A patent/JPS61107553A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS61107553A (ja) | 1986-05-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4922454A (en) | Magneto-optical memory medium and apparatus for writing and reading information on and from the medium | |
JP3135389B2 (ja) | 情報再生方法、情報記録再生方法、情報再生装置、記録媒体及び光ヘッド | |
KR100221826B1 (ko) | 광디스크 시스템 및 광디스크 | |
JP3069117B2 (ja) | 光記憶装置用光学装置 | |
JPH0513339B2 (nl) | ||
JP2861188B2 (ja) | 光磁気記録再生装置 | |
EP0445957A2 (en) | Magneto-optical disk and method of reproducing the same | |
NL8301916A (nl) | Thermo-magneto-optische registratie-inrichting en registratie-element daarvoor. | |
JPH0513336B2 (nl) | ||
US6396775B1 (en) | Magneto-optical device and recording/reproducing method | |
JPH0666094B2 (ja) | 光磁気記録装置 | |
US6324148B1 (en) | Optical disk and optical information recording/reproducing apparatus | |
JPS61107503A (ja) | 光磁気記録装置 | |
JP3104201B2 (ja) | 光学記録媒体 | |
JP3104202B2 (ja) | 光学記録媒体 | |
JP2964517B2 (ja) | 光磁気ピックアップ装置 | |
CN101248485A (zh) | 信息记录装置和记录头 | |
JP3022375B2 (ja) | 光磁気記録媒体記録再生装置 | |
KR100233420B1 (ko) | 광디스크 시스템 및 광디스크 | |
JPH06325404A (ja) | 情報記憶装置 | |
JP3259706B2 (ja) | 情報記録再生装置および情報記録再生システム | |
EP0510758A2 (en) | Method of thermomagnetically inscribing and optically reading information | |
JPH07320317A (ja) | 光磁気ディスクと記録再生方法 | |
JPH0696487A (ja) | 光磁気ディスク装置および光磁気記録方法 | |
JPH11296926A (ja) | 光磁気記録媒体の記録装置及びその記録方法並びに光磁気記録媒体の再生装置及びその再生方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |