JPH0542739B2 - - Google Patents

Info

Publication number
JPH0542739B2
JPH0542739B2 JP59113293A JP11329384A JPH0542739B2 JP H0542739 B2 JPH0542739 B2 JP H0542739B2 JP 59113293 A JP59113293 A JP 59113293A JP 11329384 A JP11329384 A JP 11329384A JP H0542739 B2 JPH0542739 B2 JP H0542739B2
Authority
JP
Japan
Prior art keywords
transparent substrate
medium layer
information medium
information carrier
carrier disk
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
JP59113293A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60256931A (ja
Inventor
Tetsuya Akyama
Masami Uchida
Isamu Inoe
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59113293A priority Critical patent/JPS60256931A/ja
Publication of JPS60256931A publication Critical patent/JPS60256931A/ja
Publication of JPH0542739B2 publication Critical patent/JPH0542739B2/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
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
    • G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
    • 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
    • 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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
JP59113293A 1984-06-01 1984-06-01 光学式情報担体円盤 Granted JPS60256931A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59113293A JPS60256931A (ja) 1984-06-01 1984-06-01 光学式情報担体円盤

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59113293A JPS60256931A (ja) 1984-06-01 1984-06-01 光学式情報担体円盤

Publications (2)

Publication Number Publication Date
JPS60256931A JPS60256931A (ja) 1985-12-18
JPH0542739B2 true JPH0542739B2 (zh) 1993-06-29

Family

ID=14608514

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59113293A Granted JPS60256931A (ja) 1984-06-01 1984-06-01 光学式情報担体円盤

Country Status (1)

Country Link
JP (1) JPS60256931A (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0746441B2 (ja) * 1986-04-17 1995-05-17 松下電器産業株式会社 光学記録部材
JPH07118094B2 (ja) * 1987-10-02 1995-12-18 富士写真フイルム株式会社 情報記録媒体
CA2041680C (en) * 1990-05-08 1997-06-24 Yoshiteru Murakami Magneto-optical disk and method of manufacturing the same
JP2003217170A (ja) * 2002-01-23 2003-07-31 Sony Corp ディスク型光記録媒体およびその再生制限方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172546A (en) * 1981-04-16 1982-10-23 C B S Sony Rekoode Kk Optical recording medium
US4448827A (en) * 1983-02-24 1984-05-15 U.S. Philips Corporation Optically readable information disc comprising an envelope of cross-linked synthetic resin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172546A (en) * 1981-04-16 1982-10-23 C B S Sony Rekoode Kk Optical recording medium
US4448827A (en) * 1983-02-24 1984-05-15 U.S. Philips Corporation Optically readable information disc comprising an envelope of cross-linked synthetic resin

Also Published As

Publication number Publication date
JPS60256931A (ja) 1985-12-18

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term