JPS57172537A - Information storage medium - Google Patents

Information storage medium

Info

Publication number
JPS57172537A
JPS57172537A JP56056717A JP5671781A JPS57172537A JP S57172537 A JPS57172537 A JP S57172537A JP 56056717 A JP56056717 A JP 56056717A JP 5671781 A JP5671781 A JP 5671781A JP S57172537 A JPS57172537 A JP S57172537A
Authority
JP
Japan
Prior art keywords
layer
information
intermediate protective
storage medium
protective layer
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
JP56056717A
Other languages
Japanese (ja)
Inventor
Hideo Ando
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 JP56056717A priority Critical patent/JPS57172537A/en
Publication of JPS57172537A publication Critical patent/JPS57172537A/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
    • 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
    • G11B7/2575—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 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
    • G11B2007/2431—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
    • G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)

Abstract

PURPOSE:To prevent an information-formed layer from deteriorating in its early stage by forming an intermediate protective layer, made of a hydrophobic material, between the substrate and information-formed layer of an optical disk. CONSTITUTION:On one surface of a substrate 1 which has a little hydrophilic natural and a surface polarized when viewed microscopically, an intermediate protective layer 2 is formed, and on it, a recording layer made of Te of Al or an information-formed layer 3 made of a light reflective layer is formed. Then, they are stuck together to constitute an information storage medium 4. The intermediate protective layer 2 uses a material which contains at least one of hydrophobic organic higher polymer materials, such as polyethylene, silicon, ''Teflon '', and vinylidene chloride to prevent the information-formed layer from deteriorating in its early stage, achieving stable information processing for a long period.
JP56056717A 1981-04-15 1981-04-15 Information storage medium Pending JPS57172537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56056717A JPS57172537A (en) 1981-04-15 1981-04-15 Information storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56056717A JPS57172537A (en) 1981-04-15 1981-04-15 Information storage medium

Publications (1)

Publication Number Publication Date
JPS57172537A true JPS57172537A (en) 1982-10-23

Family

ID=13035230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56056717A Pending JPS57172537A (en) 1981-04-15 1981-04-15 Information storage medium

Country Status (1)

Country Link
JP (1) JPS57172537A (en)

Cited By (2)

* 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
JPH01271937A (en) * 1988-04-23 1989-10-31 Hitachi Maxell Ltd Optical information recording medium

Cited By (2)

* 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
JPH01271937A (en) * 1988-04-23 1989-10-31 Hitachi Maxell Ltd Optical information recording medium

Similar Documents

Publication Publication Date Title
ATE63179T1 (en) SOLID POLYMERIC SUBSTRATE FOR OPTICAL DISCS AND OPTICAL DISCS MADE FROM SUCH SUBSTRATE.
US4319252A (en) Optical data storage and recording medium having a replaceable protective coverplate
KR900010688A (en) Optical information recording media with peelable protective film
BR9307341A (en) Anti-copy film or layer
JPS56145535A (en) Disc for optical recording
JPS57130243A (en) Information storage medium
EP0385341A3 (en) Optical recording medium
JPS5740768A (en) Photomagnetic layered recording medium
JPS57130241A (en) Information storage medium
JPS5538655A (en) Optical signal recording and reproducing member
EP0365333A3 (en) Optical recording element
NZ201393A (en) Tamperproof document:gelatine layer(s)of information carrier contain polymer of acrylic and/or methacrylic acid ester
DE69230595D1 (en) Optical plate with metallic reflective layer
JPS57172537A (en) Information storage medium
AU574523B2 (en) Thermal recording medium and method
JPS5763291A (en) Optical recording medium
DE59406879D1 (en) Weather film and molded body coated with it
JPS5760546A (en) Optical recording medium
JPS5948838A (en) Information storing medium
JPS5758250A (en) Information recording medium
EP0917139A3 (en) Recordable optical disks with dielectric interlayer
JPS57128596A (en) Memory plate for optical recording
JPS57152550A (en) Structure of optical recording medium
FI922021A0 (en) AOTERUPPTAGNING AV FLYTANDE VAETSKA.
JPS57172538A (en) Information storage demidum