DE3680057D1 - Beidseitiges optisches aufzeichnungsmedium. - Google Patents
Beidseitiges optisches aufzeichnungsmedium.Info
- Publication number
- DE3680057D1 DE3680057D1 DE8686901689T DE3680057T DE3680057D1 DE 3680057 D1 DE3680057 D1 DE 3680057D1 DE 8686901689 T DE8686901689 T DE 8686901689T DE 3680057 T DE3680057 T DE 3680057T DE 3680057 D1 DE3680057 D1 DE 3680057D1
- Authority
- DE
- Germany
- Prior art keywords
- double
- recording medium
- optical recording
- sided optical
- sided
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B7/2433—Metals or elements of groups 13, 14, 15 or 16 of the Periodic System, e.g. B, Si, Ge, As, Sb, Bi, Se or Te
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2403—Layers; Shape, structure or physical properties thereof
- G11B7/24035—Recording layers
- G11B7/24038—Multiple laminated recording layers
-
- 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
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24306—Metals or metalloids transition metal elements of groups 3-10
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
- G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
- G11B2007/2571—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing group 14 elements except carbon (Si, Ge, Sn, Pb)
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
- G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
- G11B2007/25715—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing oxygen
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2531—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising glass
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
- G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
- G11B7/2535—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polyesters, e.g. PET, PETG or PEN
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/256—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers improving adhesion between layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/913—Material designed to be responsive to temperature, light, moisture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/146—Laser beam
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Manufacturing Optical Record Carriers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/711,526 US4635076A (en) | 1985-03-14 | 1985-03-14 | Two-sided optical recording medium |
PCT/US1986/000387 WO1986005621A1 (en) | 1985-03-14 | 1986-02-24 | Two-sided optical recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3680057D1 true DE3680057D1 (de) | 1991-08-08 |
Family
ID=24858432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686901689T Expired - Fee Related DE3680057D1 (de) | 1985-03-14 | 1986-02-24 | Beidseitiges optisches aufzeichnungsmedium. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4635076A (de) |
EP (1) | EP0215846B1 (de) |
JP (1) | JPH06101139B2 (de) |
KR (1) | KR870700164A (de) |
DE (1) | DE3680057D1 (de) |
WO (1) | WO1986005621A1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0180459B1 (de) * | 1984-10-30 | 1991-12-18 | Brother Kogyo Kabushiki Kaisha | Magnetooptisches Speichermedium und Gerät zum Schreiben auf und Lesen von dem Medium |
US4782477A (en) * | 1985-09-30 | 1988-11-01 | Kabushiki Kaisha Toshiba | Optical recording medium with fluorine resin adhesive |
US4762770A (en) * | 1986-04-23 | 1988-08-09 | Drexler Technology Corporation | High contrast optical memory disk |
IT1222105B (it) * | 1986-09-11 | 1990-08-31 | Drexler Tech | Scheda per dati ottici,a sola lettura |
NL8702493A (nl) * | 1986-10-31 | 1988-05-16 | Seiko Epson Corp | Optisch opnamemedium en werkwijze voor het vervaardigen daarvan. |
JPS63102031U (de) * | 1986-12-22 | 1988-07-02 | ||
JPS63187430A (ja) * | 1987-01-30 | 1988-08-03 | Toshiba Corp | 情報記録媒体 |
WO1988008120A1 (en) * | 1987-04-16 | 1988-10-20 | Drexler Technology Corporation | Optical memory card with versatile storage medium |
JPS63261552A (ja) * | 1987-04-18 | 1988-10-28 | Fujitsu Ltd | 光学的情報記録媒体の製造法 |
FR2621160B1 (fr) * | 1987-09-29 | 1989-12-08 | Bernardo Jean Claude | Procede permettant la lecture continue des deux faces d'un disque sans interruption perceptible par l'utilisateur en fin de face i, vitesse lineaire constante et/ou vitesse angulaire constante, et dispositif appliquant ledit procede |
US5305254A (en) * | 1987-12-15 | 1994-04-19 | Sharp Kabushiki Kaisha | Magneto-optic memory device |
GB8804994D0 (en) * | 1988-03-02 | 1988-03-30 | Guiver T G | Protective element for laser disc & method of applying same |
US5234792A (en) * | 1988-11-09 | 1993-08-10 | Hitachi Maxell, Ltd. | Optical data recording medium and manufacturing method thereof |
NL8803168A (nl) * | 1988-12-24 | 1990-07-16 | Philips Nv | Werkwijze voor het thermomagnetisch registreren van informatie en het optisch uitlezen van de geregistreerde informatie alsmede een registratie-element dat geschikt is voor toepassing in deze werkwijze. |
US5161134A (en) * | 1989-06-29 | 1992-11-03 | Digital Equipment Corporation | Method for increasing linear bit density in magneto-optical storage media |
JPH03268243A (ja) * | 1990-03-16 | 1991-11-28 | Sony Corp | 光ディスク |
EP0448919B1 (de) * | 1990-03-26 | 1996-02-14 | International Business Machines Corporation | Datenträger |
US5384221A (en) * | 1990-12-12 | 1995-01-24 | Physical Optics Corporation | Birefringent azo dye polymer erasable optical storage medium |
US6010761A (en) * | 1991-03-12 | 2000-01-04 | Sony Corporation | Optical disc |
US5804017A (en) * | 1995-07-27 | 1998-09-08 | Imation Corp. | Method and apparatus for making an optical information record |
CN1230815C (zh) * | 1998-10-07 | 2005-12-07 | 株式会社日立制作所 | 信息记录介质和信息记录装置 |
TW200834557A (en) * | 2006-09-13 | 2008-08-16 | Koninkl Philips Electronics Nv | Unstructured multilayer optical discs and recording method |
JP2008071400A (ja) * | 2006-09-13 | 2008-03-27 | Toshiba Corp | 情報記憶媒体及びディスク装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3902010A (en) * | 1972-02-15 | 1975-08-26 | Canon Kk | Information recording device with record having layers with different intensity sensitivity |
US4109045A (en) * | 1972-11-06 | 1978-08-22 | Canon Kabushiki Kaisha | Information recording medium |
US4000492A (en) * | 1974-04-04 | 1976-12-28 | Bell Telephone Laboratories, Incorporated | Metal film recording media for laser writing |
DE2522928C2 (de) * | 1974-05-25 | 1984-04-05 | Canon K.K., Tokyo | Aufzeichnungsträger, Verfahren zu dessen Herstellung und Aufzeichnungsverfahren |
US4090031A (en) * | 1974-10-21 | 1978-05-16 | Eli S. Jacobs | Multi-layered opitcal data records and playback apparatus |
JPS5815319B2 (ja) * | 1975-08-11 | 1983-03-24 | 富士写真フイルム株式会社 | キロクザイリヨウ |
US4357616A (en) * | 1979-03-26 | 1982-11-02 | Hitachi, Ltd. | Recording medium |
NL7902542A (nl) * | 1979-04-02 | 1980-10-06 | Philips Nv | Optische registratie-inrichting met meerdere ablatieve registreerlagen. |
DE3170922D1 (en) * | 1980-04-22 | 1985-07-18 | Agfa Gevaert Nv | Recording material for storage of digital information and a recording method for storage of digital information |
US4331966A (en) * | 1980-10-06 | 1982-05-25 | Storage Technology Corporation | Information storage device and method of forming same |
JPS57130243A (en) * | 1981-02-05 | 1982-08-12 | Toshiba Corp | Information storage medium |
JPS57141033A (en) * | 1981-02-23 | 1982-09-01 | Asahi Chem Ind Co Ltd | Information recording materials |
US4449138A (en) * | 1981-04-15 | 1984-05-15 | Tokyo Shibaura Denki Kabushiki Kaisha | Information recording medium |
DE3381422D1 (de) * | 1982-12-23 | 1990-05-10 | Sony Corp | Thermomagnetisches optisches aufzeichnungs-/wiedergabeverfahren. |
JPS61265748A (ja) * | 1985-05-20 | 1986-11-25 | Matsushita Electric Ind Co Ltd | 光デイスク |
-
1985
- 1985-03-14 US US06/711,526 patent/US4635076A/en not_active Expired - Lifetime
-
1986
- 1986-02-24 KR KR1019860700810A patent/KR870700164A/ko not_active Application Discontinuation
- 1986-02-24 JP JP61501498A patent/JPH06101139B2/ja not_active Expired - Lifetime
- 1986-02-24 EP EP86901689A patent/EP0215846B1/de not_active Expired - Lifetime
- 1986-02-24 WO PCT/US1986/000387 patent/WO1986005621A1/en active IP Right Grant
- 1986-02-24 DE DE8686901689T patent/DE3680057D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4635076A (en) | 1987-01-06 |
KR870700164A (ko) | 1987-03-14 |
EP0215846A1 (de) | 1987-04-01 |
EP0215846B1 (de) | 1991-07-03 |
JPS62502222A (ja) | 1987-08-27 |
WO1986005621A1 (en) | 1986-09-25 |
JPH06101139B2 (ja) | 1994-12-12 |
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