JPS57135197A - Information recording medium - Google Patents

Information recording medium

Info

Publication number
JPS57135197A
JPS57135197A JP56020071A JP2007181A JPS57135197A JP S57135197 A JPS57135197 A JP S57135197A JP 56020071 A JP56020071 A JP 56020071A JP 2007181 A JP2007181 A JP 2007181A JP S57135197 A JPS57135197 A JP S57135197A
Authority
JP
Japan
Prior art keywords
layer
metal
metal compound
recording medium
thick
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
JP56020071A
Other languages
Japanese (ja)
Inventor
Masabumi Nakao
Isao Morimoto
Koichi Mori
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.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Asahi Kasei Kogyo KK
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 Asahi Chemical Industry Co Ltd, Asahi Kasei Kogyo KK filed Critical Asahi Chemical Industry Co Ltd
Priority to JP56020071A priority Critical patent/JPS57135197A/en
Publication of JPS57135197A publication Critical patent/JPS57135197A/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
    • 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
    • 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
    • G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)
    • 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
    • G11B7/254—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 protective topcoat layers
    • G11B7/2542—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 protective topcoat layers consisting essentially of organic resins

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To provide a recording medium enabling recording with excellent stability regardless of irradiation of a laser from a tranparent substrate by providing a mixed layer of a specified metal compound and a metal and a metal recording layer thereon. CONSTITUTION:A mixed layer 5 comprising a metal compound 50-1,000Angstrom thick (e.g. Al2O3) and a metal (e.g. Be) are deposited on a transparent substrate 1 with a permeability exceeding 90% in such a manner that the volume percentage of metal in the layer 5 is even in the surface parallel to the surface of the substrate 1 but locally uneven in the surface vertical thereto. Subsequently, a metal compound layer 4 (e.g. SiO2) 10-1,000Angstrom thick, a metal recording layer 2 (e.g. Bi) and a metal compound stabilizing layer 3 are provided thereon and a protective film layer 0.1-10mu thick made of transparent material (e.g. polyester) as required. This provides a highly sensitive recording medium with a high signal- to-noise ratio eliminating confused hole shape in the information recorded.
JP56020071A 1981-02-16 1981-02-16 Information recording medium Pending JPS57135197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56020071A JPS57135197A (en) 1981-02-16 1981-02-16 Information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56020071A JPS57135197A (en) 1981-02-16 1981-02-16 Information recording medium

Publications (1)

Publication Number Publication Date
JPS57135197A true JPS57135197A (en) 1982-08-20

Family

ID=12016859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56020071A Pending JPS57135197A (en) 1981-02-16 1981-02-16 Information recording medium

Country Status (1)

Country Link
JP (1) JPS57135197A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597093A (en) * 1982-07-06 1984-01-14 Sanyo Electric Co Ltd Optical recording medium
JPS5990247A (en) * 1982-11-12 1984-05-24 Sanyo Electric Co Ltd Optical recording medium
JPS59225992A (en) * 1983-06-06 1984-12-19 Dainippon Ink & Chem Inc Optical recording medium
JPS60112490A (en) * 1983-11-24 1985-06-18 Matsushita Electric Ind Co Ltd Production of optical information recording member
JPS60186804A (en) * 1984-03-06 1985-09-24 Hisanori Bando Film having periodic multi-layered structure
US20090268579A1 (en) * 2007-04-16 2009-10-29 Sony Corporation Optical information recording medium and method of recording and/or reproducing therein

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597093A (en) * 1982-07-06 1984-01-14 Sanyo Electric Co Ltd Optical recording medium
JPH0376237B2 (en) * 1982-07-06 1991-12-04 Sanyo Electric Co
JPS5990247A (en) * 1982-11-12 1984-05-24 Sanyo Electric Co Ltd Optical recording medium
JPH0376238B2 (en) * 1982-11-12 1991-12-04 Sanyo Electric Co
JPS59225992A (en) * 1983-06-06 1984-12-19 Dainippon Ink & Chem Inc Optical recording medium
JPH0575595B2 (en) * 1983-06-06 1993-10-20 Dainippon Ink & Chemicals
JPS60112490A (en) * 1983-11-24 1985-06-18 Matsushita Electric Ind Co Ltd Production of optical information recording member
JPH0421595B2 (en) * 1983-11-24 1992-04-10 Matsushita Electric Ind Co Ltd
JPS60186804A (en) * 1984-03-06 1985-09-24 Hisanori Bando Film having periodic multi-layered structure
JPH0441670B2 (en) * 1984-03-06 1992-07-09 Hisanori Bando
US20090268579A1 (en) * 2007-04-16 2009-10-29 Sony Corporation Optical information recording medium and method of recording and/or reproducing therein
US8758980B2 (en) * 2007-04-16 2014-06-24 Sony Corporation Optical information recording medium and method of recording and/or reproducing therein

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