JPS6426846A - Optical recording medium - Google Patents
Optical recording mediumInfo
- Publication number
- JPS6426846A JPS6426846A JP62182139A JP18213987A JPS6426846A JP S6426846 A JPS6426846 A JP S6426846A JP 62182139 A JP62182139 A JP 62182139A JP 18213987 A JP18213987 A JP 18213987A JP S6426846 A JPS6426846 A JP S6426846A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- optical recording
- thin film
- fulgide
- photochromic compd
- 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
- G11B7/242—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
Landscapes
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
PURPOSE:To enable the formation of a very thin film maintaining recording characteristics over a long period by using a specified photochromic compd. CONSTITUTION:An optical recording medium is produced with a photochromic compd. represented by formula I (where R is 5-30C alkyl chain). The optical recording medium is a uniform, very thin film and has the photochromism of the fulgide and the recording life can be prolonged. The fulgide is formed into the thin film by the Langmuir-Blodgett's technique and the resulting optical recording medium is strong and has high stability.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62182139A JPS6426846A (en) | 1987-07-23 | 1987-07-23 | Optical recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62182139A JPS6426846A (en) | 1987-07-23 | 1987-07-23 | Optical recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6426846A true JPS6426846A (en) | 1989-01-30 |
Family
ID=16113027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62182139A Pending JPS6426846A (en) | 1987-07-23 | 1987-07-23 | Optical recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6426846A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0407005A1 (en) * | 1989-06-10 | 1991-01-09 | THORN EMI plc | Verification device for a security system |
EP0446717A2 (en) * | 1990-03-10 | 1991-09-18 | BASF Aktiengesellschaft | Photochromic monomers and polymers derived from them |
US7465415B2 (en) | 2004-07-30 | 2008-12-16 | Ppg Industries Ohio, Inc. | Photochromic materials derived from ring-opening monomers and photochromic initiators |
US10523585B2 (en) | 2014-12-19 | 2019-12-31 | Amazon Technologies, Inc. | System on a chip comprising multiple compute sub-systems |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4220708A (en) * | 1977-07-22 | 1980-09-02 | Heller Harold G | Photochromic compounds |
JPS61138236A (en) * | 1984-12-10 | 1986-06-25 | Agency Of Ind Science & Technol | Display element |
-
1987
- 1987-07-23 JP JP62182139A patent/JPS6426846A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4220708A (en) * | 1977-07-22 | 1980-09-02 | Heller Harold G | Photochromic compounds |
JPS61138236A (en) * | 1984-12-10 | 1986-06-25 | Agency Of Ind Science & Technol | Display element |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0407005A1 (en) * | 1989-06-10 | 1991-01-09 | THORN EMI plc | Verification device for a security system |
EP0446717A2 (en) * | 1990-03-10 | 1991-09-18 | BASF Aktiengesellschaft | Photochromic monomers and polymers derived from them |
US7465415B2 (en) | 2004-07-30 | 2008-12-16 | Ppg Industries Ohio, Inc. | Photochromic materials derived from ring-opening monomers and photochromic initiators |
US10523585B2 (en) | 2014-12-19 | 2019-12-31 | Amazon Technologies, Inc. | System on a chip comprising multiple compute sub-systems |
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