ES473343A1 - Optical record disc - Google Patents

Optical record disc

Info

Publication number
ES473343A1
ES473343A1 ES473343A ES473343A ES473343A1 ES 473343 A1 ES473343 A1 ES 473343A1 ES 473343 A ES473343 A ES 473343A ES 473343 A ES473343 A ES 473343A ES 473343 A1 ES473343 A1 ES 473343A1
Authority
ES
Spain
Prior art keywords
optical record
record disc
information structure
crenellated
reflecting
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
Application number
ES473343A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES473343A1 publication Critical patent/ES473343A1/en
Expired 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
    • G11B7/241—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
    • G11B7/254—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 protective topcoat 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
    • G11B7/241—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
    • G11B7/257—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 layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording 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
    • G11B7/241—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
    • G11B7/254—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 protective topcoat layers
    • G11B2007/25408—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 protective topcoat layers consisting essentially of inorganic materials
    • G11B2007/25414—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 protective topcoat layers consisting essentially of inorganic materials containing Group 13 elements (B, Al, Ga)
    • 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
    • G11B7/256—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 layers improving adhesion between 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
    • G11B7/241—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)
  • Manufacturing Optical Record Carriers (AREA)

Abstract

A transparent disc 1 carries a reflecting crenellated information structure 2 which is bonded to a flat heat- conducting plate 6, for example an aluminium plate, to reduce the amount of local heating, with consequent degradation of the information structure 2, which may be caused by the playback beam.
ES473343A 1977-09-16 1978-09-14 Optical record disc Expired ES473343A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7710162A NL7710162A (en) 1977-09-16 1977-09-16 METHOD FOR MANUFACTURING AN OPTICALLY READABLE INFORMATION DISK USING A FLAT, STIFFENING HEAT CONDUCTIVE PLATE OF INORGANIC MATERIAL

Publications (1)

Publication Number Publication Date
ES473343A1 true ES473343A1 (en) 1979-04-16

Family

ID=19829188

Family Applications (1)

Application Number Title Priority Date Filing Date
ES473343A Expired ES473343A1 (en) 1977-09-16 1978-09-14 Optical record disc

Country Status (20)

Country Link
JP (1) JPS5454003A (en)
AR (1) AR216540A1 (en)
AT (1) AT371278B (en)
AU (1) AU523032B2 (en)
BE (1) BE870476A (en)
BR (1) BR7806005A (en)
CA (1) CA1124396A (en)
CH (1) CH637783A5 (en)
DD (1) DD139774A5 (en)
DE (1) DE2839395A1 (en)
DK (1) DK403478A (en)
ES (1) ES473343A1 (en)
FR (1) FR2403617A1 (en)
GB (1) GB2004404B (en)
IT (1) IT1098622B (en)
MX (1) MX148376A (en)
NL (1) NL7710162A (en)
NZ (1) NZ188406A (en)
SE (1) SE438568B (en)
ZA (1) ZA785080B (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4414650A (en) * 1980-06-23 1983-11-08 Sharp Kabushiki Kaisha Magneto-optic memory element
DE3028498A1 (en) * 1980-07-26 1982-03-04 Röhm GmbH, 6100 Darmstadt IMPROVED, OPTICALLY READED, INFORMATION STORAGE DISKS AND METHOD FOR THEIR PRODUCTION
JPS5766538A (en) * 1980-10-08 1982-04-22 Toshiba Corp Information storage medium
JPS57186241A (en) * 1981-05-11 1982-11-16 Mitsui Toatsu Chem Inc Optical information recording disc
JPS58108044A (en) * 1981-12-22 1983-06-28 Pioneer Electronic Corp Optical disk
NL8301956A (en) * 1983-06-02 1985-01-02 Optical Storage Int OPTICAL REGISTRATION ELEMENT.
DE3322131A1 (en) * 1983-06-20 1984-12-20 Polygram Gmbh, 2000 Hamburg DISK-SHAPED, OPTICALLY READABLE INFORMATION CARRIER WITH PROTECTIVE EDGE
JPS61500574A (en) * 1983-12-02 1986-03-27 バロ−ス・コ−ポレ−ション Cost-reduced optical disc record
JPS61214245A (en) * 1985-03-20 1986-09-24 Matsushita Electric Ind Co Ltd Optical information recording medium
JPH061561B2 (en) * 1985-08-21 1994-01-05 株式会社日立製作所 Light disk
JPS6242347A (en) * 1986-07-31 1987-02-24 Sanyo Electric Co Ltd Production of optical disk recorder
JPS63107589A (en) * 1986-10-23 1988-05-12 Nec Corp Optical recording medium
LU87571A1 (en) * 1989-08-23 1991-05-07 Glaverbel OPTICALLY READABLE INFORMATION RECORDING MEDIUM
EP0706179B1 (en) * 1994-09-27 2002-12-11 Matsushita Electric Industrial Co., Ltd. Production process of optical information recording medium and production apparatus therefor
US5684778A (en) * 1994-09-27 1997-11-04 Matsushita Electric Industrial Co., Ltd. Initialization process for a phase change recording medium with a zero level drop in flash light emission
JP2742524B2 (en) * 1994-10-03 1998-04-22 松下電器産業株式会社 Optical information medium, optical information medium manufacturing method, and optical information medium manufacturing apparatus
DE69520920T2 (en) * 1994-10-03 2001-09-27 Matsushita Electric Industrial Co., Ltd. Optical information medium, as well as unit and method for its production
JPH08203126A (en) * 1995-01-27 1996-08-09 Nec Corp Optical information recording medium, optical information reproducing method, and optical information recording, reproducing and erasing method
USRE39412E1 (en) 1995-02-15 2006-11-28 Matsushita Electric Industrial Co., Ltd. Optical information medium, and method and apparatus for fabricating the same
US6842409B2 (en) 2001-02-21 2005-01-11 Scratch-Less Disc Industries, Llc Optical disc and method of protecting same
US6680898B2 (en) 2001-02-21 2004-01-20 Todd J. Kuchman Optical disc and method of protecting same
EP1637329A1 (en) 2004-09-15 2006-03-22 Domino Printing Sciences Plc Droplet generator

Also Published As

Publication number Publication date
NZ188406A (en) 1982-05-31
CA1124396A (en) 1982-05-25
AR216540A1 (en) 1979-12-28
BE870476A (en) 1979-03-14
SE7809614L (en) 1979-03-17
SE438568B (en) 1985-04-22
GB2004404B (en) 1982-01-20
NL7710162A (en) 1979-03-20
FR2403617A1 (en) 1979-04-13
AT371278B (en) 1983-06-10
FR2403617B1 (en) 1983-06-17
AU523032B2 (en) 1982-07-08
ZA785080B (en) 1980-04-30
DK403478A (en) 1979-03-17
IT1098622B (en) 1985-09-07
DE2839395A1 (en) 1979-03-29
GB2004404A (en) 1979-03-28
IT7827635A0 (en) 1978-09-13
ATA667878A (en) 1982-10-15
AU3982778A (en) 1980-03-20
JPS5454003A (en) 1979-04-27
MX148376A (en) 1983-04-13
JPS574973B2 (en) 1982-01-28
DD139774A5 (en) 1980-01-16
BR7806005A (en) 1979-04-24
CH637783A5 (en) 1983-08-15

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971103