JPS56153543A - Light storage medium - Google Patents

Light storage medium

Info

Publication number
JPS56153543A
JPS56153543A JP5583080A JP5583080A JPS56153543A JP S56153543 A JPS56153543 A JP S56153543A JP 5583080 A JP5583080 A JP 5583080A JP 5583080 A JP5583080 A JP 5583080A JP S56153543 A JPS56153543 A JP S56153543A
Authority
JP
Japan
Prior art keywords
layer
trigger
substance
pit
boiling point
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.)
Granted
Application number
JP5583080A
Other languages
Japanese (ja)
Other versions
JPS6252368B2 (en
Inventor
Atsushi Shibukawa
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP5583080A priority Critical patent/JPS56153543A/en
Publication of JPS56153543A publication Critical patent/JPS56153543A/en
Publication of JPS6252368B2 publication Critical patent/JPS6252368B2/ja
Granted 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
    • G11B2007/24302—Metals or metalloids
    • G11B2007/2431—Metals or metalloids group 13 elements (B, Al, Ga, In)
    • 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
    • G11B2007/24312—Metals or metalloids group 14 elements (e.g. Si, Ge, Sn)
    • 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
    • G11B2007/24318—Non-metallic elements
    • G11B2007/2432—Oxygen
    • 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
    • G11B7/253—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 substrates
    • G11B7/2531—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 substrates comprising glass

Landscapes

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

Abstract

PURPOSE:To reduce the written-in energy, by providing the substance layer having low boiling point or low decomposition temperature acting as the trigger for the pit formation on the base, and providing the pit forming layer with the metal having lower melting point than the boiling point of trigger substance. CONSTITUTION:A substance like phthalocyanine having good stability and easy vapor deposition is vapor-deposited to the glass substrate 2 to form the trigger layer 1. The metallic layer (low melting point alloy consisting mainly of Bi, Pb, Sn, In and In-SiO2 cermet film, etc.) 3 having lower melting point than the boiling point or decomposition temperature of trigger substance, is formed to make light storage medium. When the laser light beam is irradiated from the layer 3 and the fine part 4 of the layer 1 is vaporized, the layer 3 is molten and the pit 5 is formed in sufficient size for the desired readout. If no trigger layer 1 is present, the pit 5 can be formed with several tens % lower energy in comparison with the heating over the boiling point of the metallic layer 3.
JP5583080A 1980-04-26 1980-04-26 Light storage medium Granted JPS56153543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5583080A JPS56153543A (en) 1980-04-26 1980-04-26 Light storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5583080A JPS56153543A (en) 1980-04-26 1980-04-26 Light storage medium

Publications (2)

Publication Number Publication Date
JPS56153543A true JPS56153543A (en) 1981-11-27
JPS6252368B2 JPS6252368B2 (en) 1987-11-05

Family

ID=13009880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5583080A Granted JPS56153543A (en) 1980-04-26 1980-04-26 Light storage medium

Country Status (1)

Country Link
JP (1) JPS56153543A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58112790A (en) * 1981-12-28 1983-07-05 Ricoh Co Ltd Optical information recording medium
JPS59178638A (en) * 1983-03-18 1984-10-09 ミネソタ・マイニング・アンド・マニユフアクチユアリング・コンパニ− 4-layer optical type recording medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5489605A (en) * 1977-09-29 1979-07-16 Philips Nv Information memory element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5489605A (en) * 1977-09-29 1979-07-16 Philips Nv Information memory element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58112790A (en) * 1981-12-28 1983-07-05 Ricoh Co Ltd Optical information recording medium
JPH0471717B2 (en) * 1981-12-28 1992-11-16 Ricoh Kk
JPS59178638A (en) * 1983-03-18 1984-10-09 ミネソタ・マイニング・アンド・マニユフアクチユアリング・コンパニ− 4-layer optical type recording medium

Also Published As

Publication number Publication date
JPS6252368B2 (en) 1987-11-05

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