DE3677911D1 - Optische apparate. - Google Patents
Optische apparate.Info
- Publication number
- DE3677911D1 DE3677911D1 DE8686309543T DE3677911T DE3677911D1 DE 3677911 D1 DE3677911 D1 DE 3677911D1 DE 8686309543 T DE8686309543 T DE 8686309543T DE 3677911 T DE3677911 T DE 3677911T DE 3677911 D1 DE3677911 D1 DE 3677911D1
- Authority
- DE
- Germany
- Prior art keywords
- optical apparatus
- optical
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
- G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08L71/12—Polyphenylene oxides
- C08L71/123—Polyphenylene oxides not modified by chemical after-treatment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/739—Magnetic recording media substrates
- G11B5/73923—Organic polymer substrates
- G11B5/73937—Substrates having an organic polymer comprising a ring structure
-
- 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
- G11B7/253—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 substrates
- G11B7/2533—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 substrates comprising resins
-
- 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
- G11B7/253—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 substrates
- G11B7/2533—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 substrates comprising resins
- G11B7/2534—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 substrates comprising resins polycarbonates [PC]
-
- 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
- G11B7/253—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 substrates
- G11B7/2533—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 substrates comprising resins
- G11B7/2536—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 substrates comprising resins polystyrene [PS]
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27559385 | 1985-12-06 | ||
JP18719586A JPH06101140B2 (ja) | 1985-12-06 | 1986-08-08 | 光学素子 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3677911D1 true DE3677911D1 (de) | 1991-04-11 |
Family
ID=26504204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686309543T Expired - Fee Related DE3677911D1 (de) | 1985-12-06 | 1986-12-08 | Optische apparate. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0225801B2 (de) |
DE (1) | DE3677911D1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6479242A (en) * | 1987-06-16 | 1989-03-24 | Sumitomo Chemical Co | Resin molded item for optical use |
DE3727093A1 (de) * | 1987-08-14 | 1989-02-23 | Basf Ag | Flaechenfoermiges, mehrschichtiges, laseroptisches aufzeichnungsmaterial |
DE3902939A1 (de) * | 1989-02-01 | 1990-08-02 | Basf Ag | Diphenochinon- und diphenohydrochinonderivate und deren verwendung in optischen formteilen |
US7300690B2 (en) | 2001-03-29 | 2007-11-27 | General Electric Company | Radial tilt reduced media |
US6716505B2 (en) | 2001-08-31 | 2004-04-06 | General Electric Company | Storage medium for data with improved dimensional stability |
US7354990B2 (en) | 2003-08-26 | 2008-04-08 | General Electric Company | Purified polymeric materials and methods of purifying polymeric materials |
US7244813B2 (en) | 2003-08-26 | 2007-07-17 | General Electric Company | Methods of purifying polymeric material |
US7041780B2 (en) | 2003-08-26 | 2006-05-09 | General Electric | Methods of preparing a polymeric material composite |
US7256225B2 (en) | 2003-08-26 | 2007-08-14 | General Electric Company | Methods of preparing a polymeric material |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4054553A (en) * | 1975-06-02 | 1977-10-18 | General Electric Company | Polyphenylene oxide process |
US4373065A (en) * | 1981-02-17 | 1983-02-08 | Xerox Corporation | Optically isotropic devices |
-
1986
- 1986-12-08 DE DE8686309543T patent/DE3677911D1/de not_active Expired - Fee Related
- 1986-12-08 EP EP86309543A patent/EP0225801B2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0225801B2 (de) | 1994-10-26 |
EP0225801B1 (de) | 1991-03-06 |
EP0225801A1 (de) | 1987-06-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8363 | Opposition against the patent | ||
8366 | Restricted maintained after opposition proceedings | ||
8339 | Ceased/non-payment of the annual fee |