GB2193723B - Optical recording medium - Google Patents

Optical recording medium

Info

Publication number
GB2193723B
GB2193723B GB8717515A GB8717515A GB2193723B GB 2193723 B GB2193723 B GB 2193723B GB 8717515 A GB8717515 A GB 8717515A GB 8717515 A GB8717515 A GB 8717515A GB 2193723 B GB2193723 B GB 2193723B
Authority
GB
United Kingdom
Prior art keywords
recording medium
optical recording
optical
medium
recording
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 - Lifetime
Application number
GB8717515A
Other languages
English (en)
Other versions
GB8717515D0 (en
GB2193723A (en
Inventor
Hansrudolf Schwander
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.)
Novartis AG
Original Assignee
Ciba Geigy AG
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 Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of GB8717515D0 publication Critical patent/GB8717515D0/en
Publication of GB2193723A publication Critical patent/GB2193723A/en
Application granted granted Critical
Publication of GB2193723B publication Critical patent/GB2193723B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/242—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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16—Amino-anthraquinones
    • C09B1/20—Preparation from starting materials already containing the anthracene nucleus
    • C09B1/26—Dyes with amino groups substituted by hydrocarbon radicals
    • C09B1/32—Dyes with amino groups substituted by hydrocarbon radicals substituted by aryl groups
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
GB8717515A 1986-07-30 1987-07-23 Optical recording medium Expired - Lifetime GB2193723B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH3064/86A CH670912A5 (enExample) 1986-07-30 1986-07-30

Publications (3)

Publication Number Publication Date
GB8717515D0 GB8717515D0 (en) 1987-08-26
GB2193723A GB2193723A (en) 1988-02-17
GB2193723B true GB2193723B (en) 1990-07-04

Family

ID=4247818

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8717515A Expired - Lifetime GB2193723B (en) 1986-07-30 1987-07-23 Optical recording medium

Country Status (5)

Country Link
JP (1) JPS6339390A (enExample)
CH (1) CH670912A5 (enExample)
DE (1) DE3724836A1 (enExample)
FR (1) FR2602365A1 (enExample)
GB (1) GB2193723B (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5270150A (en) * 1990-04-25 1993-12-14 Victor Company Of Japan, Ltd. Optical recording medium and process for producing it
EP0455124B1 (en) * 1990-04-25 1996-12-18 Victor Company Of Japan, Limited Optical recording medium and process for producing it
US5608091A (en) * 1993-12-28 1997-03-04 Nippon Shokubai Co., Ltd. Quinizarin compound, method for production thereof, and use therefor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978247A (en) * 1974-01-28 1976-08-31 Rca Corporation Transfer recording process
CA1127945A (en) * 1979-06-04 1982-07-20 James H. Sharp Optical disc
US4457855A (en) * 1981-06-08 1984-07-03 The Clorox Company Stable hypochlorite solution suspendable dyes
DE3510361A1 (de) * 1984-03-23 1985-10-03 Basf Ag, 6700 Ludwigshafen Optisches aufzeichungsmedium und verfahren zu seiner herstellung
DE3426093A1 (de) * 1984-07-14 1986-01-23 Basf Ag, 6700 Ludwigshafen Optisches aufzeichnungsmedium und verfahren zu seiner herstellung

Also Published As

Publication number Publication date
JPS6339390A (ja) 1988-02-19
FR2602365A1 (fr) 1988-02-05
DE3724836A1 (de) 1988-02-11
CH670912A5 (enExample) 1989-07-14
GB8717515D0 (en) 1987-08-26
GB2193723A (en) 1988-02-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930723