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JPS5452518A - Recording medium - Google Patents

Recording medium

Info

Publication number
JPS5452518A
JPS5452518A JP11929877A JP11929877A JPS5452518A JP S5452518 A JPS5452518 A JP S5452518A JP 11929877 A JP11929877 A JP 11929877A JP 11929877 A JP11929877 A JP 11929877A JP S5452518 A JPS5452518 A JP S5452518A
Authority
JP
Japan
Prior art keywords
layer
recording
recording medium
melting point
low melting
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
JP11929877A
Other languages
Japanese (ja)
Inventor
Ikuaki Yamagata
Shigetaro Ogura
Seishiro Yoshioka
Yoshiyuki Osada
Yoko Oikawa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP11929877A priority Critical patent/JPS5452518A/en
Publication of JPS5452518A publication Critical patent/JPS5452518A/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
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To make recording medium of high sensitivity by disposing a low melting point material layer in proximity to the recording layer in which property constant changes with energy beams. CONSTITUTION:A low melting point material layer 2 of preferably melting points 80 to 40 deg.C is provided on a metal or non-metallic substrate 1 to thicknesses 200 to 50Angstrom through vacuum evaporation of, e.g., paraffinic material. Over this is provided a recording layer 3 such as of Bi and further a protecting layer 4 is laminated thereon to a thickness preferably less than 20mu. At the time when recording is accomplished on such recording medium through radiation of a laser beam, the layer 2 is mostly removed or the removal of only part thereof is also equally satisfactory, thus the thermal deformation removal of the layer 3 is promoted.
JP11929877A 1977-10-04 1977-10-04 Recording medium Pending JPS5452518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11929877A JPS5452518A (en) 1977-10-04 1977-10-04 Recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11929877A JPS5452518A (en) 1977-10-04 1977-10-04 Recording medium

Publications (1)

Publication Number Publication Date
JPS5452518A true JPS5452518A (en) 1979-04-25

Family

ID=14757943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11929877A Pending JPS5452518A (en) 1977-10-04 1977-10-04 Recording medium

Country Status (1)

Country Link
JP (1) JPS5452518A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5665341A (en) * 1979-10-17 1981-06-03 Rca Corp Recordinggmedium for optical recording and regeneration
JPS5665340A (en) * 1979-10-17 1981-06-03 Rca Corp Recordinggmedium for optical recording and regeneration
JPS5724036A (en) * 1980-07-18 1982-02-08 Sony Corp Optical information recording medium
JPS5894146A (en) * 1981-12-01 1983-06-04 Matsushita Electric Ind Co Ltd Optical memory medium
JPS58189851A (en) * 1982-04-30 1983-11-05 Nippon Columbia Co Ltd Optical information recording medium
WO1988003310A1 (en) * 1986-10-29 1988-05-05 Dai Nippon Insatsu Kabushiki Kaisha Draw type optical recording medium
JPH01137440A (en) * 1987-11-23 1989-05-30 Taiyo Yuden Co Ltd Optical information recording medium

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5665341A (en) * 1979-10-17 1981-06-03 Rca Corp Recordinggmedium for optical recording and regeneration
JPS5665340A (en) * 1979-10-17 1981-06-03 Rca Corp Recordinggmedium for optical recording and regeneration
JPS59229756A (en) * 1979-10-17 1984-12-24 ア−ルシ−エ−　コ−ポレ−シヨン Reproduction of information recorded on recording medium
JPS62295237A (en) * 1979-10-17 1987-12-22 ア−ルシ−エ−　コ−ポレ−ション Recording medium for optical recording/reproduction system
JPS5724036A (en) * 1980-07-18 1982-02-08 Sony Corp Optical information recording medium
JPS5894146A (en) * 1981-12-01 1983-06-04 Matsushita Electric Ind Co Ltd Optical memory medium
JPS58189851A (en) * 1982-04-30 1983-11-05 Nippon Columbia Co Ltd Optical information recording medium
WO1988003310A1 (en) * 1986-10-29 1988-05-05 Dai Nippon Insatsu Kabushiki Kaisha Draw type optical recording medium
JPH01137440A (en) * 1987-11-23 1989-05-30 Taiyo Yuden Co Ltd Optical information recording medium

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