JPS57186242A - Optical information recording medium - Google Patents

Optical information recording medium

Info

Publication number
JPS57186242A
JPS57186242A JP56069991A JP6999181A JPS57186242A JP S57186242 A JPS57186242 A JP S57186242A JP 56069991 A JP56069991 A JP 56069991A JP 6999181 A JP6999181 A JP 6999181A JP S57186242 A JPS57186242 A JP S57186242A
Authority
JP
Japan
Prior art keywords
recording
layer
metallic
thin film
substrate
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
JP56069991A
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 JP56069991A priority Critical patent/JPS57186242A/en
Publication of JPS57186242A publication Critical patent/JPS57186242A/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
    • 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
    • G11B7/242—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 Table, 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
    • G11B7/241—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
    • G11B7/244—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 organic materials only

Landscapes

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

Abstract

PURPOSE:To improve the sensitivity for recording, by providing a plastic intermediate layer, which is transparent to a recording light, between a recording layer and a metallic thin film having a high reflection factor which are provided on a substrate. CONSTITUTION:A metallic thin film 2 which does not change the state for the recording light and has a high reflection factor is provided on a substrate 1. Consequently, the recording light is not transmitted through the substrate to make the recording on both sides possible. A recording layer 4 consists of a metallic, semimetallic, or chalcogenide compound thin film, and a recording layer 5 consists of an organic compound thin film having the porphyrin nucleus. A layer 3 is the plastic intermediate layer which does not absorb the recording light, and the heat energy absorbed to recording layers is diffused to this layer 3 through the metallic reflection layer to prevent the lowering of the recording sensitivity. Plastics having a thermal conductivity lower than that of the metallic reflection layer are used.
JP56069991A 1981-05-09 1981-05-09 Optical information recording medium Pending JPS57186242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56069991A JPS57186242A (en) 1981-05-09 1981-05-09 Optical information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56069991A JPS57186242A (en) 1981-05-09 1981-05-09 Optical information recording medium

Publications (1)

Publication Number Publication Date
JPS57186242A true JPS57186242A (en) 1982-11-16

Family

ID=13418643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56069991A Pending JPS57186242A (en) 1981-05-09 1981-05-09 Optical information recording medium

Country Status (1)

Country Link
JP (1) JPS57186242A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5297132A (en) * 1986-10-29 1994-03-22 Dai Nippon Insatsu Kabushiki Kaisha Draw type optical recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5297132A (en) * 1986-10-29 1994-03-22 Dai Nippon Insatsu Kabushiki Kaisha Draw type optical recording medium

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