JPS57185190A - Optical information recording medium - Google Patents

Optical information recording medium

Info

Publication number
JPS57185190A
JPS57185190A JP56069993A JP6999381A JPS57185190A JP S57185190 A JPS57185190 A JP S57185190A JP 56069993 A JP56069993 A JP 56069993A JP 6999381 A JP6999381 A JP 6999381A JP S57185190 A JPS57185190 A JP S57185190A
Authority
JP
Japan
Prior art keywords
layer
optical information
recording medium
information recording
approximately
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.)
Pending
Application number
JP56069993A
Other languages
Japanese (ja)
Inventor
Kiyoshi Tanigawa
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56069993A priority Critical patent/JPS57185190A/en
Publication of JPS57185190A publication Critical patent/JPS57185190A/en
Pending 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
    • 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
    • G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, 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
    • G11B7/241—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
    • G11B7/2572—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 organic materials
    • 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
    • G11B7/258—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 reflective layers
    • G11B7/2585—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 reflective layers based on aluminium

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To provide an optical information recording medium of high recording sensitivity, excellent reliability and low cost wherein a layer made of specific material having small thermal conductivity is provided between a metal reflecting layer and a recording layer. CONSTITUTION:A metallic thin film 2 (e.g.: Al film of approximately 100- 5,000Angstrom in thickness) of high reflectivity which changes its state by the thermal energy of a high density energy beam used (e.g.: He-Ne laser), a layer 3 of an organic compound having porphyrin nucleus (e.g.: layer of copper phthalocyanine of approximately 100Angstrom -5mu in thickness), a thin film 4 (e.g.: Te film of approximately 50-2,000Angstrom in thickness) of a metal (or a semimetal, chalcogenide compound) which changes its state by the theral energy of a used density energy beam, and a layer 5 of an organic compound having porphyrin uncleus are formed in sequance on a substrate 1 (e.g.: plastic plate) by using vacuum deposition method, spattering method, etc., to make an optical information recording medium.
JP56069993A 1981-05-09 1981-05-09 Optical information recording medium Pending JPS57185190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56069993A JPS57185190A (en) 1981-05-09 1981-05-09 Optical information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56069993A JPS57185190A (en) 1981-05-09 1981-05-09 Optical information recording medium

Publications (1)

Publication Number Publication Date
JPS57185190A true JPS57185190A (en) 1982-11-15

Family

ID=13418700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56069993A Pending JPS57185190A (en) 1981-05-09 1981-05-09 Optical information recording medium

Country Status (1)

Country Link
JP (1) JPS57185190A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325742A2 (en) * 1988-01-22 1989-08-02 Mitsubishi Kasei Corporation Phthalocyanine compound and optical recording material using it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325742A2 (en) * 1988-01-22 1989-08-02 Mitsubishi Kasei Corporation Phthalocyanine compound and optical recording material using it

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