JPS60140235U - 光学読取記憶デイスク - Google Patents

光学読取記憶デイスク

Info

Publication number
JPS60140235U
JPS60140235U JP1985017893U JP1789385U JPS60140235U JP S60140235 U JPS60140235 U JP S60140235U JP 1985017893 U JP1985017893 U JP 1985017893U JP 1789385 U JP1789385 U JP 1789385U JP S60140235 U JPS60140235 U JP S60140235U
Authority
JP
Japan
Prior art keywords
substrate
periphery
outer diameter
readable storage
storage 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.)
Pending
Application number
JP1985017893U
Other languages
English (en)
Japanese (ja)
Inventor
レオナルダス・ペトラス・ヨハネス・ホーヘフエーン
ヘンドリクス・ウイルヘルムス・コルネリウス・マリア・ペーテルス
アロイシウス・ミカエル・ヨセフス・マリア・スプルエイト
Original Assignee
エヌ・ベー・フイリツプス・フルーイランペンフアブリケン
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 エヌ・ベー・フイリツプス・フルーイランペンフアブリケン filed Critical エヌ・ベー・フイリツプス・フルーイランペンフアブリケン
Publication of JPS60140235U publication Critical patent/JPS60140235U/ja
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
    • G11B7/24097—Structures for detection, control, recording operation or replay operation; Special shapes or structures for centering or eccentricity prevention; Arrangements for testing, inspecting or evaluating; Containers, cartridges or cassettes
    • 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
    • G11B7/24015—Air-sandwiched discs

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Packaging For Recording Disks (AREA)
JP1985017893U 1984-02-14 1985-02-13 光学読取記憶デイスク Pending JPS60140235U (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8400476 1984-02-14
NL8400476A NL8400476A (nl) 1984-02-14 1984-02-14 Optisch uitleesbare geheugenschijf.

Publications (1)

Publication Number Publication Date
JPS60140235U true JPS60140235U (ja) 1985-09-17

Family

ID=19843488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985017893U Pending JPS60140235U (ja) 1984-02-14 1985-02-13 光学読取記憶デイスク

Country Status (11)

Country Link
JP (1) JPS60140235U (it)
BE (1) BE901719A (it)
CA (1) CA1241744A (it)
DD (1) DD228381A5 (it)
DE (1) DE3505015A1 (it)
ES (1) ES8606710A1 (it)
FR (1) FR2559607A1 (it)
GB (1) GB2155684B (it)
IT (1) IT1183232B (it)
NL (1) NL8400476A (it)
SU (1) SU1487826A3 (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2343784B (en) * 1998-11-16 2001-08-01 Leung Ching Yuen Irregular optical disc
US20020136155A1 (en) * 2001-03-06 2002-09-26 Chieh-Ho Chen CD safe to hold

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE203656C (it) *
DE190908C (it) *
GB335768A (en) * 1929-10-24 1930-10-02 Jacoviac Maurice Improvements in protecting devices for gramophone disc records
DE883811C (de) * 1951-06-08 1953-07-20 Hermann Geiselhart Ring aus Gummi als Plattenschutz
US4331966A (en) * 1980-10-06 1982-05-25 Storage Technology Corporation Information storage device and method of forming same
JPS5774842A (en) * 1980-10-24 1982-05-11 Mitsubishi Electric Corp Optical information recording disk
US4376963A (en) * 1980-12-19 1983-03-15 International Business Machines Corporation Composite magnetic recording disk
JPS57150155A (en) * 1981-03-09 1982-09-16 Matsushita Electric Ind Co Ltd Magnetooptic disc
JPS57172541A (en) * 1981-04-15 1982-10-23 Toshiba Corp Information storage medium
JPS57172542A (en) * 1981-04-15 1982-10-23 Toshiba Corp Information storage medium
FR2528216B1 (fr) * 1982-06-08 1988-01-08 Thomson Csf Disque optique protege a porte-couche libre
JPS5987636A (ja) * 1982-11-10 1984-05-21 Toshiba Corp 情報記憶媒体

Also Published As

Publication number Publication date
IT1183232B (it) 1987-10-15
DE3505015A1 (de) 1985-08-14
ES540285A0 (es) 1986-04-01
GB2155684B (en) 1988-11-02
CA1241744A (en) 1988-09-06
FR2559607A1 (fr) 1985-08-16
BE901719A (fr) 1985-08-12
DD228381A5 (de) 1985-10-09
GB2155684A (en) 1985-09-25
IT8519458A0 (it) 1985-02-11
ES8606710A1 (es) 1986-04-01
GB8503678D0 (en) 1985-03-13
NL8400476A (nl) 1985-09-02
SU1487826A3 (ru) 1989-06-15

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