DE3888857D1 - Verfahren zur Herstellung eines Trägers für optische Scheiben, wobei ein Träger mit einem Verteilungsgradienten der doppelten Refraktion ausgeglüht wird. - Google Patents
Verfahren zur Herstellung eines Trägers für optische Scheiben, wobei ein Träger mit einem Verteilungsgradienten der doppelten Refraktion ausgeglüht wird.Info
- Publication number
- DE3888857D1 DE3888857D1 DE88200156T DE3888857T DE3888857D1 DE 3888857 D1 DE3888857 D1 DE 3888857D1 DE 88200156 T DE88200156 T DE 88200156T DE 3888857 T DE3888857 T DE 3888857T DE 3888857 D1 DE3888857 D1 DE 3888857D1
- Authority
- DE
- Germany
- Prior art keywords
- carrier
- annealed
- producing
- optical disks
- double refraction
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 230000003287 optical effect Effects 0.000 title 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
-
- 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
-
- 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
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C2045/7343—Heating or cooling of the mould heating or cooling different mould parts at different temperatures
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62018476A JPH0757499B2 (ja) | 1987-01-30 | 1987-01-30 | 光デイスク基板の製造法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3888857D1 true DE3888857D1 (de) | 1994-05-11 |
DE3888857T2 DE3888857T2 (de) | 1994-08-04 |
Family
ID=11972693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3888857T Expired - Fee Related DE3888857T2 (de) | 1987-01-30 | 1988-01-29 | Verfahren zur Herstellung eines Trägers für optische Scheiben, wobei ein Träger mit einem Verteilungsgradienten der doppelten Refraktion ausgeglüht wird. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4892692A (de) |
EP (1) | EP0276897B1 (de) |
JP (1) | JPH0757499B2 (de) |
DE (1) | DE3888857T2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01160620A (ja) * | 1987-12-18 | 1989-06-23 | Sekisui Chem Co Ltd | 光ディスク基板の製造方法 |
JP3032587B2 (ja) * | 1990-12-28 | 2000-04-17 | ティーディーケイ株式会社 | 光ディスクの製造方法 |
US6007878A (en) * | 1993-05-27 | 1999-12-28 | Canon Kabushiki Kaisha | Process for producing an optical recording medium having a protective layer formed using a plasma processing device |
US6068906A (en) * | 1996-05-10 | 2000-05-30 | Sony Corporation | Mold for making disc substrate, process for producing mold and disc substrate |
NL1005502C2 (nl) * | 1997-03-12 | 1998-09-15 | Ict Axxicon Bv | Matrijs voor het vervaardigen van schijfvormige voorwerpen. |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58126119A (ja) * | 1982-01-22 | 1983-07-27 | Mitsubishi Chem Ind Ltd | 光学的特性のすぐれた成形物の製造法 |
JPS6067124A (ja) * | 1983-09-22 | 1985-04-17 | Daicel Chem Ind Ltd | 高密度情報記録担体用プラスチックディスクの射出成形用スタンパー |
JPS60155424A (ja) * | 1984-01-26 | 1985-08-15 | Daicel Chem Ind Ltd | 大径のポリカ−ボネ−ト製光デイスク基板およびその製造法 |
JPS6120719A (ja) * | 1984-07-09 | 1986-01-29 | Asahi Chem Ind Co Ltd | 光デイスク用プラスチツク基板の製造方法 |
JPS62262248A (ja) * | 1986-05-08 | 1987-11-14 | Nec Corp | 光磁気記録媒体の製造方法 |
JPH06103547B2 (ja) * | 1986-07-15 | 1994-12-14 | シャープ株式会社 | 光ディスク用プラスチック基板の製造方法 |
JPS63184943A (ja) * | 1987-01-28 | 1988-07-30 | Seiko Epson Corp | 光記録媒体の製造方法 |
-
1987
- 1987-01-30 JP JP62018476A patent/JPH0757499B2/ja not_active Expired - Lifetime
-
1988
- 1988-01-26 US US07/148,687 patent/US4892692A/en not_active Expired - Lifetime
- 1988-01-29 EP EP88200156A patent/EP0276897B1/de not_active Expired - Lifetime
- 1988-01-29 DE DE3888857T patent/DE3888857T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0276897A2 (de) | 1988-08-03 |
US4892692A (en) | 1990-01-09 |
JPS63188013A (ja) | 1988-08-03 |
JPH0757499B2 (ja) | 1995-06-21 |
EP0276897B1 (de) | 1994-04-06 |
DE3888857T2 (de) | 1994-08-04 |
EP0276897A3 (en) | 1990-08-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |