FR2724255B1 - OPTICAL DISC AND MANUFACTURING METHOD OF OPTICAL DISCS - Google Patents

OPTICAL DISC AND MANUFACTURING METHOD OF OPTICAL DISCS

Info

Publication number
FR2724255B1
FR2724255B1 FR9410528A FR9410528A FR2724255B1 FR 2724255 B1 FR2724255 B1 FR 2724255B1 FR 9410528 A FR9410528 A FR 9410528A FR 9410528 A FR9410528 A FR 9410528A FR 2724255 B1 FR2724255 B1 FR 2724255B1
Authority
FR
France
Prior art keywords
optical
manufacturing
optical disc
discs
optical discs
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 - Fee Related
Application number
FR9410528A
Other languages
French (fr)
Other versions
FR2724255A1 (en
Inventor
Pascal Andre
Jean Ledieu
Franck Murray
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.)
Digipress
Original Assignee
Digipress
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 Digipress filed Critical Digipress
Priority to FR9410528A priority Critical patent/FR2724255B1/en
Publication of FR2724255A1 publication Critical patent/FR2724255A1/en
Application granted granted Critical
Publication of FR2724255B1 publication Critical patent/FR2724255B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • 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
    • 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
    • G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • G11B7/2585—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on aluminium

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
FR9410528A 1994-09-01 1994-09-01 OPTICAL DISC AND MANUFACTURING METHOD OF OPTICAL DISCS Expired - Fee Related FR2724255B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9410528A FR2724255B1 (en) 1994-09-01 1994-09-01 OPTICAL DISC AND MANUFACTURING METHOD OF OPTICAL DISCS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9410528A FR2724255B1 (en) 1994-09-01 1994-09-01 OPTICAL DISC AND MANUFACTURING METHOD OF OPTICAL DISCS

Publications (2)

Publication Number Publication Date
FR2724255A1 FR2724255A1 (en) 1996-03-08
FR2724255B1 true FR2724255B1 (en) 1997-04-11

Family

ID=9466634

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9410528A Expired - Fee Related FR2724255B1 (en) 1994-09-01 1994-09-01 OPTICAL DISC AND MANUFACTURING METHOD OF OPTICAL DISCS

Country Status (1)

Country Link
FR (1) FR2724255B1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134603A (en) * 1978-04-11 1979-10-19 Mitsubishi Electric Corp Production of information recording medium
JPH0770091B2 (en) * 1984-09-28 1995-07-31 共同印刷株式会社 Optical reading card and manufacturing method thereof
EP0485366B1 (en) * 1985-02-18 1995-10-04 Dai Nippon Insatsu Kabushiki Kaisha Process for preparing optical data cards
JPH02116043A (en) * 1988-10-24 1990-04-27 Nec Corp Production of optical disk
CA2066070A1 (en) * 1991-04-18 1992-10-19 Felix P. Shvartsman Method for read-only optically readable media

Also Published As

Publication number Publication date
FR2724255A1 (en) 1996-03-08

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Legal Events

Date Code Title Description
ST Notification of lapse