JPS5661048A - Optical memory medium - Google Patents
Optical memory mediumInfo
- Publication number
- JPS5661048A JPS5661048A JP13527379A JP13527379A JPS5661048A JP S5661048 A JPS5661048 A JP S5661048A JP 13527379 A JP13527379 A JP 13527379A JP 13527379 A JP13527379 A JP 13527379A JP S5661048 A JPS5661048 A JP S5661048A
- Authority
- JP
- Japan
- Prior art keywords
- base
- refractive index
- memory medium
- optical memory
- plastic
- 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
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
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13527379A JPS5661048A (en) | 1979-10-22 | 1979-10-22 | Optical memory medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13527379A JPS5661048A (en) | 1979-10-22 | 1979-10-22 | Optical memory medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5661048A true JPS5661048A (en) | 1981-05-26 |
JPS6130329B2 JPS6130329B2 (fr) | 1986-07-12 |
Family
ID=15147842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13527379A Granted JPS5661048A (en) | 1979-10-22 | 1979-10-22 | Optical memory medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5661048A (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4363924A (en) * | 1980-11-14 | 1982-12-14 | Basf Aktiengesellschaft | Depolymerization of polytetramethylene glycol ethers |
US4481620A (en) * | 1981-03-24 | 1984-11-06 | Tokyo Shibaura Denki Kabushiki Kaisha | Pregrooved optical-disk |
JPS601634A (ja) * | 1983-06-02 | 1985-01-07 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | 光学的記録媒体 |
JPS6252739A (ja) * | 1985-09-02 | 1987-03-07 | Canon Inc | 光記録媒体 |
JPS62204448A (ja) * | 1986-03-04 | 1987-09-09 | Matsushita Electric Ind Co Ltd | 光デイスク |
US4984231A (en) * | 1987-01-23 | 1991-01-08 | Hitachi, Ltd. | Optical information phase change recording medium having double protective layer |
US5276673A (en) * | 1989-05-18 | 1994-01-04 | Mitsubishi Kasei Corporation | Read-only optical disk containing a reflective layer comprising an Al alloy containing Ta |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0212820Y2 (fr) * | 1985-12-27 | 1990-04-10 | ||
JPH0343939Y2 (fr) * | 1986-08-28 | 1991-09-13 | ||
JPH0224421Y2 (fr) * | 1986-09-18 | 1990-07-04 |
-
1979
- 1979-10-22 JP JP13527379A patent/JPS5661048A/ja active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4363924A (en) * | 1980-11-14 | 1982-12-14 | Basf Aktiengesellschaft | Depolymerization of polytetramethylene glycol ethers |
US4481620A (en) * | 1981-03-24 | 1984-11-06 | Tokyo Shibaura Denki Kabushiki Kaisha | Pregrooved optical-disk |
JPS601634A (ja) * | 1983-06-02 | 1985-01-07 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | 光学的記録媒体 |
JPH0370862B2 (fr) * | 1983-06-02 | 1991-11-11 | Intaanashonaru Bijinesu Mashiinzu Corp | |
JPS6252739A (ja) * | 1985-09-02 | 1987-03-07 | Canon Inc | 光記録媒体 |
JPS62204448A (ja) * | 1986-03-04 | 1987-09-09 | Matsushita Electric Ind Co Ltd | 光デイスク |
US4984231A (en) * | 1987-01-23 | 1991-01-08 | Hitachi, Ltd. | Optical information phase change recording medium having double protective layer |
US5276673A (en) * | 1989-05-18 | 1994-01-04 | Mitsubishi Kasei Corporation | Read-only optical disk containing a reflective layer comprising an Al alloy containing Ta |
Also Published As
Publication number | Publication date |
---|---|
JPS6130329B2 (fr) | 1986-07-12 |
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