JPH041414B2 - - Google Patents

Info

Publication number
JPH041414B2
JPH041414B2 JP55188746A JP18874680A JPH041414B2 JP H041414 B2 JPH041414 B2 JP H041414B2 JP 55188746 A JP55188746 A JP 55188746A JP 18874680 A JP18874680 A JP 18874680A JP H041414 B2 JPH041414 B2 JP H041414B2
Authority
JP
Japan
Prior art keywords
reflective
recording
film
metal material
track
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.)
Expired - Lifetime
Application number
JP55188746A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57109138A (en
Inventor
Takao Hiuga
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP55188746A priority Critical patent/JPS57109138A/ja
Publication of JPS57109138A publication Critical patent/JPS57109138A/ja
Publication of JPH041414B2 publication Critical patent/JPH041414B2/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
    • 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
    • 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
    • G11B7/258—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 reflective layers
    • G11B7/2585—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 reflective layers based on aluminium

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
JP55188746A 1980-12-25 1980-12-25 Optical information recording medium Granted JPS57109138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55188746A JPS57109138A (en) 1980-12-25 1980-12-25 Optical information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55188746A JPS57109138A (en) 1980-12-25 1980-12-25 Optical information recording medium

Publications (2)

Publication Number Publication Date
JPS57109138A JPS57109138A (en) 1982-07-07
JPH041414B2 true JPH041414B2 (enrdf_load_stackoverflow) 1992-01-13

Family

ID=16229041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55188746A Granted JPS57109138A (en) 1980-12-25 1980-12-25 Optical information recording medium

Country Status (1)

Country Link
JP (1) JPS57109138A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8300960A (nl) * 1983-03-17 1984-10-16 Philips Nv Optische registatieschijf.
JP2002251786A (ja) * 2001-02-22 2002-09-06 Sony Corp 光記録媒体及びその製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114263A (en) * 1974-07-26 1976-02-04 Hitachi Ltd Setsugono roeiboshiho
JPS5231703A (en) * 1975-09-05 1977-03-10 Kokusai Denshin Denwa Co Ltd <Kdd> Magnetic thin film recording medium
FR2365854A1 (fr) * 1976-09-24 1978-04-21 Thomson Brandt Procede de fabrication d'un support d'information enregistrable et lisible optiquement et support obtenu par un tel procede
JPS56105344A (en) * 1980-01-25 1981-08-21 Fuji Photo Film Co Ltd Photomagnetic recording medium
JPS56156144U (enrdf_load_stackoverflow) * 1980-04-21 1981-11-21

Also Published As

Publication number Publication date
JPS57109138A (en) 1982-07-07

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