NL7706584A - PROCEDURE FOR MANUFACTURING A REGISTRIBLE AND OPTICALLY READABLE INFORMATION CARRIER AND INFORMATION CARRIER THEREFORE OBTAINED. - Google Patents

PROCEDURE FOR MANUFACTURING A REGISTRIBLE AND OPTICALLY READABLE INFORMATION CARRIER AND INFORMATION CARRIER THEREFORE OBTAINED.

Info

Publication number
NL7706584A
NL7706584A NL7706584A NL7706584A NL7706584A NL 7706584 A NL7706584 A NL 7706584A NL 7706584 A NL7706584 A NL 7706584A NL 7706584 A NL7706584 A NL 7706584A NL 7706584 A NL7706584 A NL 7706584A
Authority
NL
Netherlands
Prior art keywords
information carrier
registrible
procedure
manufacturing
optically readable
Prior art date
Application number
NL7706584A
Other languages
Dutch (nl)
Original Assignee
Thomson Brandt Sa
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 Thomson Brandt Sa filed Critical Thomson Brandt Sa
Publication of NL7706584A publication Critical patent/NL7706584A/en

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
    • G11B7/24015—Air-sandwiched 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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
NL7706584A 1976-06-18 1977-06-15 PROCEDURE FOR MANUFACTURING A REGISTRIBLE AND OPTICALLY READABLE INFORMATION CARRIER AND INFORMATION CARRIER THEREFORE OBTAINED. NL7706584A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7618602A FR2355337A1 (en) 1976-06-18 1976-06-18 Optical read-write system for disc memories - has disc sandwiched between covers to prevent errors due to dust particles or surface scratches (NL 20.12.77)

Publications (1)

Publication Number Publication Date
NL7706584A true NL7706584A (en) 1977-12-20

Family

ID=9174600

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7706584A NL7706584A (en) 1976-06-18 1977-06-15 PROCEDURE FOR MANUFACTURING A REGISTRIBLE AND OPTICALLY READABLE INFORMATION CARRIER AND INFORMATION CARRIER THEREFORE OBTAINED.

Country Status (4)

Country Link
JP (1) JPS52156605A (en)
DE (1) DE2727189A1 (en)
FR (1) FR2355337A1 (en)
NL (1) NL7706584A (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4183094A (en) * 1978-03-20 1980-01-08 Xerox Corporation Optical storage medium using the frequency domain
JPS6037700Y2 (en) * 1978-06-07 1985-11-11 三洋電機株式会社 Structure of disk record
JPS5545166A (en) * 1978-09-25 1980-03-29 Matsushita Electric Ind Co Ltd Recording and reproducing method for optical information
FR2437668A1 (en) * 1978-09-29 1980-04-25 Thomson Csf PROTECTED OPTICAL DISC
CH636466A5 (en) * 1978-10-17 1983-05-31 Mca Disco Vision Method and device for recording information in the form of a frequency-modulated signal
FR2490858B1 (en) * 1980-09-25 1986-04-04 Rca Corp OPTICAL RECORDING MEDIUM WITH VARIABLE SENSITIVITY AND DISC CONTAINING INFORMATION, MADE BY USING SUCH MEDIUM
JPS5762831A (en) * 1980-10-02 1982-04-16 Nissan Motor Co Ltd Forging die for part having reverse gradient
JPS5766538A (en) * 1980-10-08 1982-04-22 Toshiba Corp Information storage medium
JPS5766539A (en) * 1980-10-09 1982-04-22 Toshiba Corp Optical disk
DE3176118D1 (en) * 1980-10-09 1987-05-21 Toshiba Kk Data recording medium
JPS5771247U (en) * 1980-10-17 1982-04-30
JPS5786173A (en) * 1980-11-17 1982-05-29 Toshiba Corp Recorder and reproducer
JPS5788537A (en) * 1980-11-19 1982-06-02 Toshiba Corp Optical disc
JPS5788538A (en) * 1980-11-19 1982-06-02 Toshiba Corp Optical disc
JPS5817631U (en) * 1981-07-23 1983-02-03 富士写真フイルム株式会社 optical information recording medium
JPH0680541B2 (en) * 1982-02-22 1994-10-12 株式会社日立製作所 Information recording medium
DE3416607C2 (en) * 1983-05-04 1995-03-16 Matsushita Electric Ind Co Ltd Optical disk and method of making the same
US4527173A (en) * 1984-04-16 1985-07-02 Eastman Kodak Company Erasable, reusable optical recording element and method
US4538159A (en) * 1984-04-16 1985-08-27 Eastman Kodak Company Ceramic overcoated optical recording element
JPS61111040U (en) * 1985-10-25 1986-07-14
JPS62141661A (en) * 1985-12-16 1987-06-25 Ricoh Co Ltd Optical information recording medium
DE3701801A1 (en) * 1986-01-22 1987-07-23 Ricoh Kk OPTICAL INFORMATION RECORDING MATERIAL
JPH0433553Y2 (en) * 1986-05-30 1992-08-11
JPS6323236A (en) * 1987-05-21 1988-01-30 Sanyo Electric Co Ltd Structure of disk record
JPS63841A (en) * 1987-06-26 1988-01-05 Sharp Corp Magneto-optical memory element
JPH0652589B2 (en) * 1990-11-27 1994-07-06 株式会社東芝 Method for manufacturing optical information storage carrier

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626386A (en) * 1970-03-05 1971-12-07 Energy Conversion Devices Inc Information storage systems

Also Published As

Publication number Publication date
DE2727189A1 (en) 1977-12-29
JPS52156605A (en) 1977-12-27
FR2355337B1 (en) 1979-03-23
FR2355337A1 (en) 1978-01-13

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Legal Events

Date Code Title Description
BV The patent application has lapsed