JPH031734B2 - - Google Patents

Info

Publication number
JPH031734B2
JPH031734B2 JP58204824A JP20482483A JPH031734B2 JP H031734 B2 JPH031734 B2 JP H031734B2 JP 58204824 A JP58204824 A JP 58204824A JP 20482483 A JP20482483 A JP 20482483A JP H031734 B2 JPH031734 B2 JP H031734B2
Authority
JP
Japan
Prior art keywords
cellulose acetate
substrate
chemically strengthened
strengthened glass
organic material
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
JP58204824A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5998331A (ja
Inventor
Motoyasu Terao
Shinkichi Horigome
Kazuo Shigematsu
Yoshinori Myamura
Seiji Yonezawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP58204824A priority Critical patent/JPS5998331A/ja
Publication of JPS5998331A publication Critical patent/JPS5998331A/ja
Publication of JPH031734B2 publication Critical patent/JPH031734B2/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

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)
JP58204824A 1983-11-02 1983-11-02 光デイスク用基板 Granted JPS5998331A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58204824A JPS5998331A (ja) 1983-11-02 1983-11-02 光デイスク用基板

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58204824A JPS5998331A (ja) 1983-11-02 1983-11-02 光デイスク用基板

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP61258205A Division JPS62143243A (ja) 1986-10-31 1986-10-31 光ディスク

Publications (2)

Publication Number Publication Date
JPS5998331A JPS5998331A (ja) 1984-06-06
JPH031734B2 true JPH031734B2 (enExample) 1991-01-11

Family

ID=16496986

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58204824A Granted JPS5998331A (ja) 1983-11-02 1983-11-02 光デイスク用基板

Country Status (1)

Country Link
JP (1) JPS5998331A (enExample)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513030B2 (enExample) * 1972-06-08 1980-04-05
FR2397931A1 (fr) * 1977-07-22 1979-02-16 Thomson Brandt Procede de reproduction de disque support d'information et disque obtenu par un tel procede
JPS54106201A (en) * 1978-02-08 1979-08-21 Toppan Printing Co Ltd High packing density information recording carrier

Also Published As

Publication number Publication date
JPS5998331A (ja) 1984-06-06

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