GB1603761A - Protective overcoat layer for optical video disc - Google Patents

Protective overcoat layer for optical video disc Download PDF

Info

Publication number
GB1603761A
GB1603761A GB1628/78A GB1672878A GB1603761A GB 1603761 A GB1603761 A GB 1603761A GB 1628/78 A GB1628/78 A GB 1628/78A GB 1672878 A GB1672878 A GB 1672878A GB 1603761 A GB1603761 A GB 1603761A
Authority
GB
United Kingdom
Prior art keywords
layer
light
overcoat
sucrose
light absorbing
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
GB1628/78A
Other languages
English (en)
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of GB1603761A publication Critical patent/GB1603761A/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
    • G11B7/2542—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 organic resins
    • 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
    • G11B2007/25705—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 consisting essentially of inorganic materials
    • G11B2007/2571—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 consisting essentially of inorganic materials containing group 14 elements except carbon (Si, Ge, Sn, Pb)
    • 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
    • G11B2007/25705—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 consisting essentially of inorganic materials
    • G11B2007/25715—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 consisting essentially of inorganic materials containing oxygen
    • 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
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
    • 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
    • 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
    • G11B7/2595—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 gold

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
GB1628/78A 1977-08-29 1978-04-27 Protective overcoat layer for optical video disc Expired GB1603761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82881677A 1977-08-29 1977-08-29

Publications (1)

Publication Number Publication Date
GB1603761A true GB1603761A (en) 1981-11-25

Family

ID=25252817

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1628/78A Expired GB1603761A (en) 1977-08-29 1978-04-27 Protective overcoat layer for optical video disc

Country Status (8)

Country Link
JP (1) JPS5437739A (fr)
DE (1) DE2817945A1 (fr)
FR (1) FR2402275A1 (fr)
GB (1) GB1603761A (fr)
HK (1) HK77386A (fr)
MY (1) MY8500779A (fr)
NL (1) NL191296C (fr)
SG (1) SG38384G (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101907A (en) * 1977-08-29 1978-07-18 Rca Corporation Overcoat structure for optical video disc
JPS5522961A (en) * 1978-08-07 1980-02-19 Fuji Photo Film Co Ltd Thermal recording material
US4357616A (en) * 1979-03-26 1982-11-02 Hitachi, Ltd. Recording medium
JPS6023037B2 (ja) * 1980-03-18 1985-06-05 旭化成株式会社 情報記録部材
JPS56161199A (en) * 1980-05-16 1981-12-11 Fuji Photo Film Co Ltd Recording of information using information recording medium
JPS5766544A (en) * 1980-10-14 1982-04-22 Fujitsu Ltd Optical disk medium
JPS62188037A (ja) * 1986-02-13 1987-08-17 Central Glass Co Ltd 光情報記録カ−ド
JPS6480591A (en) * 1987-09-24 1989-03-27 Nippon Denso Co Optical information recording medium

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665483A (en) * 1969-06-06 1972-05-23 Chase Manhattan Capital Corp Laser recording medium
US3911444A (en) * 1974-04-04 1975-10-07 Bell Telephone Labor Inc Metal film recording media for laser writing
DE2522928C2 (de) * 1974-05-25 1984-04-05 Canon K.K., Tokyo Aufzeichnungsträger, Verfahren zu dessen Herstellung und Aufzeichnungsverfahren
AU511031B2 (en) * 1976-03-19 1980-07-24 Rca Corp. Ablative optical recording medium
US4023185A (en) * 1976-03-19 1977-05-10 Rca Corporation Ablative optical recording medium
AU514899B2 (en) * 1977-03-28 1981-03-05 Rca Corp. High density information record
US4101907A (en) * 1977-08-29 1978-07-18 Rca Corporation Overcoat structure for optical video disc

Also Published As

Publication number Publication date
JPS641315B2 (fr) 1989-01-11
FR2402275B1 (fr) 1985-03-15
MY8500779A (en) 1985-12-31
NL7804656A (nl) 1979-03-02
SG38384G (en) 1985-03-08
HK77386A (en) 1986-10-24
DE2817945C2 (fr) 1987-10-08
NL191296B (nl) 1994-12-01
FR2402275A1 (fr) 1979-03-30
NL191296C (nl) 1995-05-01
JPS5437739A (en) 1979-03-20
DE2817945A1 (de) 1979-03-15

Similar Documents

Publication Publication Date Title
US4300143A (en) Thin protective overcoat layer for optical video disc
US4101907A (en) Overcoat structure for optical video disc
US4315269A (en) Thick protective overcoat layer for optical video disc
US4241355A (en) Ablative optical recording medium
US4023185A (en) Ablative optical recording medium
US4222071A (en) Sensitivity information record
US4458004A (en) Optical information recording medium
US4097895A (en) Multilayer optical record
US4345261A (en) Dielectric recording medium
US4305081A (en) Multilayer record blank for use in optical recording
US4313188A (en) Method of recording an ablative optical recording medium
US4219826A (en) Optical recording medium
EP0092113B1 (fr) Elément d'enregistrement optique pour un système de mémoire optique et un procédé de fabrication de l'élément
CA1135413A (fr) Support d'enregistrement optique
US4322839A (en) Method and apparatus for recording and reproducing information on and from an optical disk
US4190843A (en) Recording methods for a multilayer optical record
US4218689A (en) Ablatable medium for optical recording
GB1603761A (en) Protective overcoat layer for optical video disc
US4242689A (en) Ablative optical recording medium
GB1576279A (en) Optical recording medium
GB2066489A (en) Ablative optical recording medium
EP0051283B2 (fr) Milieu d'enregistrement optique et son procédé de fabrication
JPH0436876B2 (fr)
US4600682A (en) Optical storage structure
CA1235901A (fr) Support d'enregistrement en couche mince a contraste pousse

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19980426