DE69020837D1 - Medium für optische Datenaufzeichnung. - Google Patents

Medium für optische Datenaufzeichnung.

Info

Publication number
DE69020837D1
DE69020837D1 DE69020837T DE69020837T DE69020837D1 DE 69020837 D1 DE69020837 D1 DE 69020837D1 DE 69020837 T DE69020837 T DE 69020837T DE 69020837 T DE69020837 T DE 69020837T DE 69020837 D1 DE69020837 D1 DE 69020837D1
Authority
DE
Germany
Prior art keywords
medium
data recording
optical data
optical
recording
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
Application number
DE69020837T
Other languages
English (en)
Other versions
DE69020837T2 (de
Inventor
Junichiro Kudo
Katsumi Kohno
Toshikazu Umemura
Makoto Matsumura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Gas Chemical Co Inc
Sony Corp
Original Assignee
Mitsubishi Gas Chemical Co Inc
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26540688&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69020837(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP1252362A external-priority patent/JP2813004B2/ja
Priority claimed from JP1252361A external-priority patent/JPH03116559A/ja
Application filed by Mitsubishi Gas Chemical Co Inc, Sony Corp filed Critical Mitsubishi Gas Chemical Co Inc
Application granted granted Critical
Publication of DE69020837D1 publication Critical patent/DE69020837D1/de
Publication of DE69020837T2 publication Critical patent/DE69020837T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G11B7/252—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
DE69020837T 1989-09-29 1990-09-28 Medium für optische Datenaufzeichnung. Expired - Fee Related DE69020837T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1252362A JP2813004B2 (ja) 1989-09-29 1989-09-29 光学的情報記録媒体
JP1252361A JPH03116559A (ja) 1989-09-29 1989-09-29 光学的情報記録媒体

Publications (2)

Publication Number Publication Date
DE69020837D1 true DE69020837D1 (de) 1995-08-17
DE69020837T2 DE69020837T2 (de) 1996-04-04

Family

ID=26540688

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69020837T Expired - Fee Related DE69020837T2 (de) 1989-09-29 1990-09-28 Medium für optische Datenaufzeichnung.
DE69030517T Expired - Fee Related DE69030517T2 (de) 1989-09-29 1990-09-28 Optisches Informationsaufzeichnungsmedium

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69030517T Expired - Fee Related DE69030517T2 (de) 1989-09-29 1990-09-28 Optisches Informationsaufzeichnungsmedium

Country Status (3)

Country Link
EP (2) EP0628957B1 (de)
KR (1) KR0181498B1 (de)
DE (2) DE69020837T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545330A1 (de) 1995-12-05 1997-06-12 Bayer Ag Verwendung von Carbonaten als Entformungsmittel für thermoplastische Polycarbonate
DE69728842T2 (de) * 1996-12-09 2005-04-21 Mitsubishi Chem Corp Verfahren zur Herstellung eines Polycarbonats mit geringem Anteil flüchtigem Chlor
US6649677B2 (en) * 1998-11-03 2003-11-18 General Electric Company Polycarbonate sheet with improved fire retardant performance
SE9903011D0 (sv) 1999-08-26 1999-08-26 Aamic Ab Sätt att framställa en plastprodukt och ett härför utnyttjat plastproduktformande arrangemang
JP7101465B2 (ja) * 2017-10-17 2022-07-15 三菱エンジニアリングプラスチックス株式会社 樹脂組成物および成形品

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0248081B2 (ja) * 1983-11-24 1990-10-24 Teijin Chemicals Ltd Kogakuyoseikeihin
JPH0649750B2 (ja) * 1984-08-24 1994-06-29 三菱化成株式会社 ポリカーボネートより成る射出成形材料
US4880896A (en) * 1987-05-30 1989-11-14 Idemitsu Petrochemical Co., Ltd. Polycarbonate for disc substrate having low bisphenol content
EP0300485A3 (de) * 1987-07-21 1990-04-25 Mitsubishi Gas Chemical Company, Inc. Verfahren zur Herstellung von Polycarbonatharz-Formmasse mit niedrigem Teilchengehalt
DE3803939A1 (de) * 1988-02-10 1989-08-24 Bayer Ag Polycarbonate mit aralkylphenylendgruppen, ihre herstellung und verwendung

Also Published As

Publication number Publication date
EP0628957A1 (de) 1994-12-14
DE69030517D1 (de) 1997-05-22
EP0420279A2 (de) 1991-04-03
KR0181498B1 (ko) 1999-04-15
DE69030517T2 (de) 1997-11-06
KR910006937A (ko) 1991-04-30
DE69020837T2 (de) 1996-04-04
EP0420279B1 (de) 1995-07-12
EP0628957B1 (de) 1997-04-16
EP0420279A3 (en) 1991-04-17

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8339 Ceased/non-payment of the annual fee