FR2435780B1 - - Google Patents

Info

Publication number
FR2435780B1
FR2435780B1 FR7922279A FR7922279A FR2435780B1 FR 2435780 B1 FR2435780 B1 FR 2435780B1 FR 7922279 A FR7922279 A FR 7922279A FR 7922279 A FR7922279 A FR 7922279A FR 2435780 B1 FR2435780 B1 FR 2435780B1
Authority
FR
France
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
Application number
FR7922279A
Other versions
FR2435780A1 (fr
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of FR2435780A1 publication Critical patent/FR2435780A1/fr
Application granted granted Critical
Publication of FR2435780B1 publication Critical patent/FR2435780B1/fr
Granted legal-status Critical Current

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
    • G11B7/252—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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/705—Compositions containing chalcogenides, metals or alloys thereof, as photosensitive substances, e.g. photodope systems
    • 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
    • G11B7/2533—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
FR7922279A 1978-09-08 1979-09-06 Support d'enregistrement et de reproduction de signaux optiques Granted FR2435780A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11094478A JPS5538655A (en) 1978-09-08 1978-09-08 Optical signal recording and reproducing member

Publications (2)

Publication Number Publication Date
FR2435780A1 FR2435780A1 (fr) 1980-04-04
FR2435780B1 true FR2435780B1 (fr) 1985-02-15

Family

ID=14548502

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7922279A Granted FR2435780A1 (fr) 1978-09-08 1979-09-06 Support d'enregistrement et de reproduction de signaux optiques

Country Status (3)

Country Link
JP (1) JPS5538655A (fr)
DE (1) DE2935908A1 (fr)
FR (1) FR2435780A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63183949A (ja) * 1978-08-28 1988-07-29 デイスコビジョン　アソシエイツ ポリメチルメタクリレート材料
US4373004A (en) * 1979-08-14 1983-02-08 Nippon Telegraph & Telephone Public Corporation Laser beam-recording media and method for manufacturing the same
JPS5651030A (en) * 1979-10-01 1981-05-08 Omex Laser recording medium
NL8002039A (nl) * 1980-04-08 1981-11-02 Philips Nv Optisch uitleesbare informatieschijf.
US4340655A (en) * 1980-06-18 1982-07-20 Eastman Kodak Company Thermal and mechanical barrier layers for optical recording elements
JPS5724042A (en) * 1980-07-18 1982-02-08 Sony Corp Optical information recording medium and its production
JPS5762831A (en) * 1980-10-02 1982-04-16 Nissan Motor Co Ltd Forging die for part having reverse gradient
EP0049821B1 (fr) * 1980-10-09 1987-04-15 Kabushiki Kaisha Toshiba Elément d'enregistrement de données
JPS57113434A (en) * 1981-01-06 1982-07-14 Mitsubishi Rayon Co Ltd Manufacture of information recording body
US4365257A (en) * 1981-03-05 1982-12-21 Minnesota Mining And Manufacturing Company Stretched-film optical recording disc
JPS57150151A (en) * 1981-03-11 1982-09-16 Asahi Denka Kogyo Kk Optical disc with coated surface
JPS5837855A (ja) * 1981-08-31 1983-03-05 Ayao Wada 画像、音声、磁気、信号等の記録、再生用デイスク盤
JPS5862841A (ja) * 1981-10-09 1983-04-14 Seiko Epson Corp デイスク材料
JPS60157747A (ja) * 1984-01-26 1985-08-19 Daicel Chem Ind Ltd 光磁気記録ディスク
JPS60170032A (ja) * 1984-02-13 1985-09-03 Hitachi Ltd 光デイスクの傷再生方法およびその装置
US4600682A (en) * 1984-07-06 1986-07-15 Storage Technology Corporation Optical storage structure
EP0315392A3 (en) * 1987-11-05 1990-09-12 Energy Conversion Devices, Inc. Data storage device having an encapsulated phase change memory medium and means for suppressing ablation thereof
US5364735A (en) * 1988-07-01 1994-11-15 Sony Corporation Multiple layer optical record medium with protective layers and method for producing same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2209159A1 (en) * 1972-09-25 1974-06-28 Western Electric Co Data processing bismuth plastics tape - precipitating plastics film within plasma discharge
JPS5932319B2 (ja) * 1974-03-22 1984-08-08 富士写真フイルム株式会社 記録材料
US3911444A (en) * 1974-04-04 1975-10-07 Bell Telephone Labor Inc Metal film recording media for laser writing
JPS51131603A (en) * 1975-04-28 1976-11-16 Teletype Corp Multiilayer memory structure for laser recording
GB2005155A (en) * 1977-09-28 1979-04-19 Rca Corp Improved optical recording medium
US4189735A (en) * 1978-02-24 1980-02-19 Rca Corporation Record playback apparatus and information record therefor
JPS5514504A (en) * 1978-07-14 1980-02-01 Hitachi Ltd Recording component
FR2435779A1 (fr) * 1978-09-08 1980-04-04 Matsushita Electric Ind Co Ltd Element d'enregistrement optique

Also Published As

Publication number Publication date
JPS5538655A (en) 1980-03-18
DE2935908A1 (de) 1980-04-17
FR2435780A1 (fr) 1980-04-04

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Legal Events

Date Code Title Description
ST Notification of lapse