JPS57189356A - Information recording medium - Google Patents

Information recording medium

Info

Publication number
JPS57189356A
JPS57189356A JP56072647A JP7264781A JPS57189356A JP S57189356 A JPS57189356 A JP S57189356A JP 56072647 A JP56072647 A JP 56072647A JP 7264781 A JP7264781 A JP 7264781A JP S57189356 A JPS57189356 A JP S57189356A
Authority
JP
Japan
Prior art keywords
layer
recording
material layer
information recording
heat
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
JP56072647A
Other languages
Japanese (ja)
Inventor
Tomoya Koyama
Yoshio Aoki
Kenjiro Watanabe
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP56072647A priority Critical patent/JPS57189356A/en
Priority to PCT/JP1982/000166 priority patent/WO1982004159A1/en
Publication of JPS57189356A publication Critical patent/JPS57189356A/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
    • 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

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE: To reduce recording power by forming a recording layer to be formed with recording pits by melting through a heat insulating material layer on a substrate.
CONSTITUTION: A substrate 1 having a smooth surface 11a is provided by a resin or glass, and an information recording layer 12 with 50W1000Å thicknesses consisting of a low m.p. metal consisting of an alloy contg. Bi, Te or at least one of these or an alloy consisting essentially of these and contg. In, Sb, Sn, Pb, etc. is deposited via a heat insulating material layer 13 on said surface 11a. A material layer 13 having a high transmittance to semiconductor laser light (l), having heat resistant to temp. during recording of the layer 12 and possessing high heat conductivity and a heat insulation effect is selected for the layer 13.
COPYRIGHT: (C)1982,JPO&Japio
JP56072647A 1981-05-14 1981-05-14 Information recording medium Pending JPS57189356A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56072647A JPS57189356A (en) 1981-05-14 1981-05-14 Information recording medium
PCT/JP1982/000166 WO1982004159A1 (en) 1981-05-14 1982-05-13 An information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56072647A JPS57189356A (en) 1981-05-14 1981-05-14 Information recording medium

Publications (1)

Publication Number Publication Date
JPS57189356A true JPS57189356A (en) 1982-11-20

Family

ID=13495379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56072647A Pending JPS57189356A (en) 1981-05-14 1981-05-14 Information recording medium

Country Status (2)

Country Link
JP (1) JPS57189356A (en)
WO (1) WO1982004159A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038745A (en) * 1983-08-09 1985-02-28 Nec Corp Optical recording medium and optical recording and reproducing method
WO1999052101A1 (en) * 1998-04-06 1999-10-14 Sharp Kabushiki Kaisha Magnetic recording medium and method of recording

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62219246A (en) * 1986-03-19 1987-09-26 Hitachi Maxell Ltd Optical information recording disk
JPH03168943A (en) * 1989-11-29 1991-07-22 Hitachi Ltd Optical memory and information processor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5932319B2 (en) * 1974-03-22 1984-08-08 富士写真フイルム株式会社 recording material
JPS5538665A (en) * 1978-09-08 1980-03-18 Matsushita Electric Ind Co Ltd Optical recording member
JPS56155793A (en) * 1980-05-06 1981-12-02 Nippon Telegr & Teleph Corp <Ntt> Optical memory medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038745A (en) * 1983-08-09 1985-02-28 Nec Corp Optical recording medium and optical recording and reproducing method
WO1999052101A1 (en) * 1998-04-06 1999-10-14 Sharp Kabushiki Kaisha Magnetic recording medium and method of recording
US6882617B1 (en) 1998-04-06 2005-04-19 Sharp Kabushiki Kaisha Magnetic recording medium and method of recording

Also Published As

Publication number Publication date
WO1982004159A1 (en) 1982-11-25

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