KR890015216A - 광기록 매체 및 광기록 방식 - Google Patents
광기록 매체 및 광기록 방식 Download PDFInfo
- Publication number
- KR890015216A KR890015216A KR1019890003854A KR890003854A KR890015216A KR 890015216 A KR890015216 A KR 890015216A KR 1019890003854 A KR1019890003854 A KR 1019890003854A KR 890003854 A KR890003854 A KR 890003854A KR 890015216 A KR890015216 A KR 890015216A
- Authority
- KR
- South Korea
- Prior art keywords
- stretched film
- optical recording
- photochromic compound
- recording medium
- liquid crystal
- Prior art date
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
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0055—Erasing
- G11B7/00552—Erasing involving colour change media
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
-
- 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
- G11B7/25—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 liquid crystals
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Holo Graphy (AREA)
- Optical Recording Or Reproduction (AREA)
- Liquid Crystal (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 연신 필름중에 포토크로믹 화합물이 분산 또는 용해되어 되는 광기록매체에 자외선과 가시광을 교호로 조사한 경우의 편광면의 회전각의 변화를 나타낸 도. 제 2 도는 네마틱 액정중에 포토크로믹 화합물이 용해 또는 분산되어 광기록 매체에 자외광을 조사하여 기록된 정보를 가시광을 사용하여 독출할때의 선광도의 변화를 나타낸도. 제 3 도는 네마틱액정 중에 포토크로믹 화합물이 용해 또는 분산되어 되는 광기록 매체에 자외광과 가시광을 교호로 조사한 경우의 선광도의 변화를 나타낸 도이다.
Claims (6)
- 포토크로믹 화합물이 연신필름 또는 네마틱 액정 또는 스메틱 액정 중에 분산도는 용해되고 상기 포토크로믹 화합물의 광흡수의 천이 모멘트가 일정방향으로 배향되어 있는 것을 특징으로 하는 광기록 매체.
- 제 1 항에 있어서, 상기 연신필름이 1축 연신필름인 광기록 매체.
- 제 1 항에 있어서, 상기 연신필름이 폴리올레핀, 폴리비닐 알콜, 폴리메타크릴레이트, 폴리에스테르 또는 비정질 폴리올레핀 수지로 된 연신필름인 광기록 매체.
- 포토크로믹 화합물이 연신필름 또는 네마틱 액정 또는 스메틱 액정 중에 분산 또는 용해되고 그 광흡수의 천이 모멘트가 일정방향으로 배향된 포토크로믹 화합물을 광기록 매체로 변화시키고 포토크로믹 화합물의 흡수파장의 영역의 광빔을 조사하여 포토크로믹 화합물의 구조를 변화시킴으로서 정보의 기입 또는 재기입을 행하고 포토크로믹 화합물의 흡수가 없는 파장영역의 광빔을 독출광으로 하여 포토크로믹 화합물에 조사하고 광조사 전후의 겉보기 선광도의 차를 검출함으로써 정보의 기입 및 독출을 비파괴적으로 행하는 것을 특징으로 하는 광기로 방식.
- 제 4 항에 있어서, 상기 연신필름 1축 연신필름인 광기록 방식.
- 제 4 항에 있어서, 상기 연신필름이 폴리 올레핀, 폴리비닐 알콜, 폴리메타크릴레이트, 폴리에스테르 또는 비정질 폴리올레핀수지로 된 연신필름인 광기록 방식.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63-75367 | 1988-03-28 | ||
JP63075367A JPH01246538A (ja) | 1988-03-28 | 1988-03-28 | 光記録媒体 |
JP63-75366 | 1988-03-28 | ||
JP63075366A JP2772345B2 (ja) | 1988-03-28 | 1988-03-28 | 光記録方式 |
JP64-994 | 1989-01-06 | ||
JP64000994A JPH02181746A (ja) | 1989-01-06 | 1989-01-06 | 光記録媒体 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR890015216A true KR890015216A (ko) | 1989-10-28 |
KR920003783B1 KR920003783B1 (ko) | 1992-05-14 |
Family
ID=27274709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019890003854A KR920003783B1 (ko) | 1988-03-28 | 1989-03-28 | 광기록매체 및 광기록방법 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5118586A (ko) |
EP (1) | EP0335579B1 (ko) |
KR (1) | KR920003783B1 (ko) |
AT (1) | ATE107070T1 (ko) |
DE (1) | DE68915843T2 (ko) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2940690B2 (ja) * | 1989-09-22 | 1999-08-25 | 三洋電機株式会社 | 光記録媒体及びその再生方法 |
DE69028908T2 (de) * | 1989-12-28 | 1997-05-07 | Sanyo Electric Co | Aufzeichnungs- und Wiedergabeverfahren |
US5234799A (en) * | 1990-02-17 | 1993-08-10 | Mitsubishi Denki Kabushiki Kaisha | Photochromic material and rewritable optical recording medium |
US5644416A (en) * | 1991-11-26 | 1997-07-01 | Fuji Xerox Co., Ltd. | Light modulation device and method of light modulation using the same |
US5552915A (en) * | 1994-10-19 | 1996-09-03 | The Penn State Research Foundation | Liquid crystal non-linear, photorefractive electro-optical storage device having a liquid crystal film including dopant species of C60 or C70 |
US6011772A (en) * | 1996-09-16 | 2000-01-04 | Spectradisc Corporation | Machine-readable optical disc with reading-inhibit agent |
US6071618A (en) * | 1996-10-11 | 2000-06-06 | Cryovac, Inc. | Process for increasing the solubility rate of a water soluble film |
JPH10183117A (ja) * | 1996-12-24 | 1998-07-14 | Dainippon Printing Co Ltd | 記録表示媒体及びその使用方法 |
US5989451A (en) * | 1997-02-07 | 1999-11-23 | Queen's University At Kingston | Compounds and methods for doping liquid crystal hosts |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3212898A (en) * | 1962-11-21 | 1965-10-19 | American Cyanamid Co | Photosensitive compositions of matter comprising photochromic materials suspended in polyester binders |
US3397059A (en) * | 1964-07-01 | 1968-08-13 | American Cyanamid Co | Photochromic polymethylmethacrylate element on contact with polyester resinous material |
DE3429438A1 (de) * | 1984-08-10 | 1988-06-23 | Basf Ag | Optisches aufzeichnungsmedium |
JPS6177846A (ja) * | 1984-09-26 | 1986-04-21 | Nippon Sheet Glass Co Ltd | フォトクロミック材料 |
US4686169A (en) * | 1984-11-13 | 1987-08-11 | Matsushita Electric Industrial Co., Ltd. | Optical recording medium and production of the same |
JPS61170737A (ja) * | 1985-01-24 | 1986-08-01 | Sony Corp | 光記録媒体 |
DE3682583D1 (de) * | 1985-12-20 | 1992-01-02 | Matsushita Electric Ind Co Ltd | Optisches aufzeichnungsmedium mit stabilisierter aufzeichnungsschicht. |
JPS62209186A (ja) * | 1986-03-11 | 1987-09-14 | Agency Of Ind Science & Technol | 光メモリ材料 |
DE3623395A1 (de) * | 1986-07-11 | 1988-01-21 | Roehm Gmbh | Vorrichtung zur reversiblen, optischen datenspeicherung unter verwendung von polymeren fluessigkristallen |
JPS63193141A (ja) * | 1987-02-06 | 1988-08-10 | Nippon Telegr & Teleph Corp <Ntt> | 波長多重記憶媒体 |
US4963448A (en) * | 1987-08-31 | 1990-10-16 | Agency Of Industrial Science & Technology | Photorecording element and liquid crystal cell comprising the same |
-
1989
- 1989-03-20 US US07/325,995 patent/US5118586A/en not_active Expired - Lifetime
- 1989-03-22 DE DE68915843T patent/DE68915843T2/de not_active Expired - Fee Related
- 1989-03-22 AT AT89302849T patent/ATE107070T1/de not_active IP Right Cessation
- 1989-03-22 EP EP89302849A patent/EP0335579B1/en not_active Expired - Lifetime
- 1989-03-28 KR KR1019890003854A patent/KR920003783B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US5118586A (en) | 1992-06-02 |
EP0335579B1 (en) | 1994-06-08 |
EP0335579A2 (en) | 1989-10-04 |
EP0335579A3 (en) | 1990-11-28 |
DE68915843T2 (de) | 1994-09-22 |
KR920003783B1 (ko) | 1992-05-14 |
DE68915843D1 (de) | 1994-07-14 |
ATE107070T1 (de) | 1994-06-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
LAPS | Lapse due to unpaid annual fee |