JPS5782095A - Optical information recording medium - Google Patents
Optical information recording mediumInfo
- Publication number
- JPS5782095A JPS5782095A JP55158133A JP15813380A JPS5782095A JP S5782095 A JPS5782095 A JP S5782095A JP 55158133 A JP55158133 A JP 55158133A JP 15813380 A JP15813380 A JP 15813380A JP S5782095 A JPS5782095 A JP S5782095A
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- recorded part
- metal thin
- recording layer
- reflected beams
- 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.)
- Pending
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
- G11B7/2578—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
-
- 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
- G11B7/248—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 porphines; azaporphines, e.g. phthalocyanines
-
- 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
- G11B7/249—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 organometallic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
PURPOSE:To permit to read and reproduce informations with reflected beams and to increase contrast between the recorded part and the non-recorded part by forming a metal thin film layer on a recording layer in an optical information recording medium using a laser beam. CONSTITUTION:A thin film of lead phthalocyanine is formed on a substrate and a metal thin film is formed thereon. Lead phthalocyanine has high sensitivity and absorption peaks in visible and near infrared regions, thus permitting to record and reproduce writing or reading with various laser beams. The provision of the metal thin film layer on the recording layer makes it possible that the recording layer is protected from dirt from the hands and mechanical or dynamical flaws, reading and reproduction are performed with the reflected beams, and further contrast as a difference in intensity of the reflected beams from the information recorded part and the non-recorded part is increased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55158133A JPS5782095A (en) | 1980-11-12 | 1980-11-12 | Optical information recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55158133A JPS5782095A (en) | 1980-11-12 | 1980-11-12 | Optical information recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5782095A true JPS5782095A (en) | 1982-05-22 |
Family
ID=15664992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55158133A Pending JPS5782095A (en) | 1980-11-12 | 1980-11-12 | Optical information recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5782095A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919253A (en) * | 1982-07-23 | 1984-01-31 | Sony Corp | Information recording medium |
FR2561023A1 (en) * | 1984-03-09 | 1985-09-13 | Canon Kk | OPTICAL RECORDING MEDIUM |
JPS62137749A (en) * | 1985-12-09 | 1987-06-20 | Matsushita Electric Ind Co Ltd | Production of optical recording medium |
JPH02132656A (en) * | 1988-07-30 | 1990-05-22 | Taiyo Yuden Co Ltd | Optical information recording medium and optical information recording method using it |
US6063467A (en) * | 1997-02-24 | 2000-05-16 | Fuji Electric Co., Ltd. | Optical recording medium |
US6103331A (en) * | 1997-09-26 | 2000-08-15 | Fuji Electric Co., Ltd. | Optical recording medium comprising organic dye thin film |
US6165580A (en) * | 1997-11-11 | 2000-12-26 | Fuji Electric Co., Ltd. | Optical recording medium |
-
1980
- 1980-11-12 JP JP55158133A patent/JPS5782095A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919253A (en) * | 1982-07-23 | 1984-01-31 | Sony Corp | Information recording medium |
JPH0432448B2 (en) * | 1982-07-23 | 1992-05-29 | ||
FR2561023A1 (en) * | 1984-03-09 | 1985-09-13 | Canon Kk | OPTICAL RECORDING MEDIUM |
JPS62137749A (en) * | 1985-12-09 | 1987-06-20 | Matsushita Electric Ind Co Ltd | Production of optical recording medium |
JPH02132656A (en) * | 1988-07-30 | 1990-05-22 | Taiyo Yuden Co Ltd | Optical information recording medium and optical information recording method using it |
JPH0375942B2 (en) * | 1988-07-30 | 1991-12-03 | Taiyo Yuden Kk | |
US6063467A (en) * | 1997-02-24 | 2000-05-16 | Fuji Electric Co., Ltd. | Optical recording medium |
US6103331A (en) * | 1997-09-26 | 2000-08-15 | Fuji Electric Co., Ltd. | Optical recording medium comprising organic dye thin film |
US6165580A (en) * | 1997-11-11 | 2000-12-26 | Fuji Electric Co., Ltd. | Optical recording medium |
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