JPS5850636A - 記録再生デイスク - Google Patents

記録再生デイスク

Info

Publication number
JPS5850636A
JPS5850636A JP56146252A JP14625281A JPS5850636A JP S5850636 A JPS5850636 A JP S5850636A JP 56146252 A JP56146252 A JP 56146252A JP 14625281 A JP14625281 A JP 14625281A JP S5850636 A JPS5850636 A JP S5850636A
Authority
JP
Japan
Prior art keywords
recording
center
thin film
substrate
substrates
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.)
Granted
Application number
JP56146252A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0221061B2 (enrdf_load_stackoverflow
Inventor
Toshimasa Kamisada
利昌 神定
Hiroshi Kitani
木谷　寛
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 JP56146252A priority Critical patent/JPS5850636A/ja
Publication of JPS5850636A publication Critical patent/JPS5850636A/ja
Publication of JPH0221061B2 publication Critical patent/JPH0221061B2/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
    • G11B7/26—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)
JP56146252A 1981-09-18 1981-09-18 記録再生デイスク Granted JPS5850636A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56146252A JPS5850636A (ja) 1981-09-18 1981-09-18 記録再生デイスク

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56146252A JPS5850636A (ja) 1981-09-18 1981-09-18 記録再生デイスク

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP3151457A Division JPH04263168A (ja) 1991-06-24 1991-06-24 記録再生装置

Publications (2)

Publication Number Publication Date
JPS5850636A true JPS5850636A (ja) 1983-03-25
JPH0221061B2 JPH0221061B2 (enrdf_load_stackoverflow) 1990-05-11

Family

ID=15403531

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56146252A Granted JPS5850636A (ja) 1981-09-18 1981-09-18 記録再生デイスク

Country Status (1)

Country Link
JP (1) JPS5850636A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043242A (ja) * 1983-08-18 1985-03-07 Sharp Corp 光メモリ円板

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531002A (en) * 1976-05-13 1978-01-07 Philips Corp Radiation sensitive record
JPS5446515U (enrdf_load_stackoverflow) * 1977-09-07 1979-03-31

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531002A (en) * 1976-05-13 1978-01-07 Philips Corp Radiation sensitive record
JPS5446515U (enrdf_load_stackoverflow) * 1977-09-07 1979-03-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043242A (ja) * 1983-08-18 1985-03-07 Sharp Corp 光メモリ円板

Also Published As

Publication number Publication date
JPH0221061B2 (enrdf_load_stackoverflow) 1990-05-11

Similar Documents

Publication Publication Date Title
JPS63175229A (ja) 磁気転写方式
JPS5850636A (ja) 記録再生デイスク
JPS6396755A (ja) 光学式情報記録円盤の製造方法
JPS61156547A (ja) 円盤状記録媒体の作製方法
JPS6151632A (ja) 情報記録担体
JP2507366B2 (ja) 情報記憶媒体
JPH04263168A (ja) 記録再生装置
JP2504117B2 (ja) 光ディスクの貼り合せ方法
JP2953473B2 (ja) 磁気ディスク装置並びに該装置に用いるディスク及びその組み込み方法
JPH0477392B2 (enrdf_load_stackoverflow)
JP2635341B2 (ja) 光ディスク用ハブの接着装置
JPH0477973B2 (enrdf_load_stackoverflow)
JPH07110996A (ja) 情報ディスク
JPH056643A (ja) 光カード
JPH01220191A (ja) ディスク装置
JPH0822639A (ja) 光ディスク及びその製造方法
JPH087329A (ja) 両面同時記録再生用光ディスクおよび その製造方法
JPH03230381A (ja) 光情報記録媒体用基板
JPH01227280A (ja) 光ディスク
JPH02310871A (ja) ディスク取付け部の構造
JPS6020334A (ja) 情報坦体デイスク
JPS62114151A (ja) 磁気デイスク組立体
JPH02183447A (ja) 光ディスクの製造方法
JPH09237443A (ja) 光ディスク
JPS61236048A (ja) 無偏心型光情報媒体の製造方法