JPS6440388A - Optical data recording medium for compact disc - Google Patents

Optical data recording medium for compact disc

Info

Publication number
JPS6440388A
JPS6440388A JP62195800A JP19580087A JPS6440388A JP S6440388 A JPS6440388 A JP S6440388A JP 62195800 A JP62195800 A JP 62195800A JP 19580087 A JP19580087 A JP 19580087A JP S6440388 A JPS6440388 A JP S6440388A
Authority
JP
Japan
Prior art keywords
substrate
reflectivity
ion
optical data
data 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.)
Granted
Application number
JP62195800A
Other languages
Japanese (ja)
Other versions
JPH074980B2 (en
Inventor
Ariake Shin
Takashi Ishiguro
Emiko Hamada
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.)
Taiyo Yuden Co Ltd
Original Assignee
Taiyo Yuden Co Ltd
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 Taiyo Yuden Co Ltd filed Critical Taiyo Yuden Co Ltd
Priority to JP62195800A priority Critical patent/JPH074980B2/en
Publication of JPS6440388A publication Critical patent/JPS6440388A/en
Publication of JPH074980B2 publication Critical patent/JPH074980B2/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
    • 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
    • G11B7/247—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 methine or polymethine dyes
    • G11B7/2472—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 methine or polymethine dyes cyanine

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To enhance reflectivity and obtain an output satisfactory as a reproduction signal, by providing on a substrate a recording layer comprising an indolenine having specified substituent groups A and A'. CONSTITUTION:A heat-mode direct-read-after-write type optical data recording medium for use as a compact disc is an optical data recording disc having, on a substrate, a recording layer comprising a cyanine coloring matter which is an indolenine cyanine of general formula [I] and in which, due to the substituent groups A and A', the wavelength corresponding to a maximum substrate incidence reflectivity (reflectivity or light incident from the substrate side) of the indolenine cyanine is in the range of 750-810nm. By using the cyanine coloring matter, it is possible to ensure that the maximum substrate incidence reflectivity in a semiconductor laser wavelength region of 750-810nm is, for example, at least 30%. In the formula, each of A and A' is an atomic group for forming substd. or unsubstd. benzene or naphthalene ring, each of R1 and R1' is a alkoxyl, X1<-> is a halide ion, perchlorate ion, fluoroborate ion or trifluoromethylcarboxylate ion, and B is pentamethine.
JP62195800A 1987-08-05 1987-08-05 Recording / playback method on disc Expired - Lifetime JPH074980B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62195800A JPH074980B2 (en) 1987-08-05 1987-08-05 Recording / playback method on disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62195800A JPH074980B2 (en) 1987-08-05 1987-08-05 Recording / playback method on disc

Publications (2)

Publication Number Publication Date
JPS6440388A true JPS6440388A (en) 1989-02-10
JPH074980B2 JPH074980B2 (en) 1995-01-25

Family

ID=16347188

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62195800A Expired - Lifetime JPH074980B2 (en) 1987-08-05 1987-08-05 Recording / playback method on disc

Country Status (1)

Country Link
JP (1) JPH074980B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01131277A (en) * 1987-08-07 1989-05-24 Asahi Kagaku Kogyo Kk Cyanine compound

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5955795A (en) * 1982-09-27 1984-03-30 Tdk Corp Optical recording medium
JPS5967092A (en) * 1982-10-11 1984-04-16 Tdk Corp Optical recording medium
JPS5983695A (en) * 1982-11-02 1984-05-15 Tdk Corp Optical recording medium
JPS5985791A (en) * 1982-11-08 1984-05-17 Ricoh Co Ltd Optical information recording medium
JPS59218634A (en) * 1983-05-27 1984-12-08 Ricoh Co Ltd Writing and reading-out method of optical information recording medium
JPS6035345A (en) * 1983-04-12 1985-02-23 Sumitomo Chem Co Ltd Optical disk recording medium and its manufacture
JPS60204396A (en) * 1984-03-29 1985-10-15 Tdk Corp Optical recording medium
JPS60205841A (en) * 1984-03-30 1985-10-17 Tdk Corp Optical recording medium
JPS60214994A (en) * 1984-04-11 1985-10-28 Ricoh Co Ltd Image-recording material
JPS60230891A (en) * 1984-05-01 1985-11-16 Ricoh Co Ltd Optical information-recording medium
JPS62173294A (en) * 1986-01-27 1987-07-30 Olympus Optical Co Ltd Optical information recording medium
JPS62239947A (en) * 1986-04-14 1987-10-20 Meiji Milk Prod Co Ltd Fermented butter and production thereof

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5955795A (en) * 1982-09-27 1984-03-30 Tdk Corp Optical recording medium
JPS5967092A (en) * 1982-10-11 1984-04-16 Tdk Corp Optical recording medium
JPS5983695A (en) * 1982-11-02 1984-05-15 Tdk Corp Optical recording medium
JPS5985791A (en) * 1982-11-08 1984-05-17 Ricoh Co Ltd Optical information recording medium
JPS6035345A (en) * 1983-04-12 1985-02-23 Sumitomo Chem Co Ltd Optical disk recording medium and its manufacture
JPS59218634A (en) * 1983-05-27 1984-12-08 Ricoh Co Ltd Writing and reading-out method of optical information recording medium
JPS60204396A (en) * 1984-03-29 1985-10-15 Tdk Corp Optical recording medium
JPS60205841A (en) * 1984-03-30 1985-10-17 Tdk Corp Optical recording medium
JPS60214994A (en) * 1984-04-11 1985-10-28 Ricoh Co Ltd Image-recording material
JPS60230891A (en) * 1984-05-01 1985-11-16 Ricoh Co Ltd Optical information-recording medium
JPS62173294A (en) * 1986-01-27 1987-07-30 Olympus Optical Co Ltd Optical information recording medium
JPS62239947A (en) * 1986-04-14 1987-10-20 Meiji Milk Prod Co Ltd Fermented butter and production thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01131277A (en) * 1987-08-07 1989-05-24 Asahi Kagaku Kogyo Kk Cyanine compound

Also Published As

Publication number Publication date
JPH074980B2 (en) 1995-01-25

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