JPS5621890A - Optical recording material - Google Patents

Optical recording material

Info

Publication number
JPS5621890A
JPS5621890A JP9669379A JP9669379A JPS5621890A JP S5621890 A JPS5621890 A JP S5621890A JP 9669379 A JP9669379 A JP 9669379A JP 9669379 A JP9669379 A JP 9669379A JP S5621890 A JPS5621890 A JP S5621890A
Authority
JP
Japan
Prior art keywords
film
organic
transparent
metallic
recording material
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
JP9669379A
Other languages
Japanese (ja)
Inventor
Noburo Yasuda
Yoshinori Fujimori
Masaaki Morita
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9669379A priority Critical patent/JPS5621890A/en
Publication of JPS5621890A publication Critical patent/JPS5621890A/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
    • G11B7/254—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
    • 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
    • G11B7/242—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)

Landscapes

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

Abstract

PURPOSE:To provide large-capacity optical recording material best suited to high density read only memory by forming transparent protective layer of organic film on the light receiving surface of recording metallic film to prevent oxidization of metallic film. CONSTITUTION:Part of recording film (Bi, Se, Te, etc. with film thickness of 200-300Angstrom are desirable) formed on the base plate (glass, plastic, etc.) is evaporated through radiation of laser beam (beam less than 1mumphi is desirable) and recording is made depending on the existence of, or lack of, film. In such optical recording material, light receiving surface is provided with protective layer of transparent organic film (preferably, application and hardening of organic resin such as transparent epoxy resin and transparent silicone resin or heat pressed adhesion of organic sheet such as acrylic dry film). EFFECT:Presence or lack of bits is clearly discernible due to prevention of disappearance of metallic color by oxidization of metallic film.
JP9669379A 1979-07-31 1979-07-31 Optical recording material Pending JPS5621890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9669379A JPS5621890A (en) 1979-07-31 1979-07-31 Optical recording material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9669379A JPS5621890A (en) 1979-07-31 1979-07-31 Optical recording material

Publications (1)

Publication Number Publication Date
JPS5621890A true JPS5621890A (en) 1981-02-28

Family

ID=14171849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9669379A Pending JPS5621890A (en) 1979-07-31 1979-07-31 Optical recording material

Country Status (1)

Country Link
JP (1) JPS5621890A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5862841A (en) * 1981-10-09 1983-04-14 Seiko Epson Corp Disc material
JPS6058894A (en) * 1983-09-12 1985-04-05 Dainippon Printing Co Ltd Transfer sheet comprising optical recording layer
JPH02244438A (en) * 1985-07-31 1990-09-28 E I Du Pont De Nemours & Co Optical record medium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5862841A (en) * 1981-10-09 1983-04-14 Seiko Epson Corp Disc material
JPS6058894A (en) * 1983-09-12 1985-04-05 Dainippon Printing Co Ltd Transfer sheet comprising optical recording layer
JPH0452238B2 (en) * 1983-09-12 1992-08-21 Dainippon Printing Co Ltd
JPH02244438A (en) * 1985-07-31 1990-09-28 E I Du Pont De Nemours & Co Optical record medium

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