KR900018936A - 판독 전용 광학 디스크 - Google Patents

판독 전용 광학 디스크 Download PDF

Info

Publication number
KR900018936A
KR900018936A KR1019900007058A KR900007058A KR900018936A KR 900018936 A KR900018936 A KR 900018936A KR 1019900007058 A KR1019900007058 A KR 1019900007058A KR 900007058 A KR900007058 A KR 900007058A KR 900018936 A KR900018936 A KR 900018936A
Authority
KR
South Korea
Prior art keywords
read
optical disc
substrate
protective layer
reflective layer
Prior art date
Application number
KR1019900007058A
Other languages
English (en)
Inventor
요시미쯔 고바야시
요시유끼 기사까
다까시 하시모또
도시후미 가와노
미쯔구 와까바야시
Original Assignee
스즈끼 세이지
미쓰비시 가세이 가부시끼가이샤
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
Application filed by 스즈끼 세이지, 미쓰비시 가세이 가부시끼가이샤 filed Critical 스즈끼 세이지
Publication of KR900018936A publication Critical patent/KR900018936A/ko

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
    • G11B7/258—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 reflective layers
    • 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
    • G11B7/258—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 reflective layers
    • G11B7/2585—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 reflective layers based on aluminium
    • 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
    • G11B7/254—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 protective topcoat layers
    • G11B7/2542—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 protective topcoat layers consisting essentially of organic 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/146—Laser beam

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

내용 없음

Description

판독 전용 광학 디스크
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 판독 전용(read-only)광학 디스크의 횡단면도이다.

Claims (9)

  1. 광학적으로 판독될 수 있는 정보 피트를 한쪽면에 갖고있는 고리형의 투명한 합성수지 기판, Ta를 함유한 Al합금을 포함하며 상기 기판위에 놓여지는 반사층, 그리고 상기 반사층위의 보호층을 포함하는 판독 전용 광학 디스크.
  2. 제1항에 있어서, 고리형 기판의 바깥쪽 가장자리와 안쪽 가장자리사이에서 정보 피트가 형성되어 있는 중간 지대위에 반사층이 구비되어 있고, 반사층의 표면과, 기판의 바깥쪽 가장자리 및 안쪽 가장자리를 보호하기 위하여 보호층이 구비되어 있는 판독 전용 광학 디스크.
  3. 제1항에 있어서, 반사층이 0.1 내지 15at%의 Ta가 함유된 Al합금을 포함하는 판독 전용 광학 디스크.
  4. 제1항에 있어서, 보호층이 알칼리 금속 및/또는 알칼리 토금속으로 환산했을 때 10ppm이하의 잔류 알칼리 금속 화합물 및/또는 알칼리 토금속 화합물 함량 및 할로겐으로 환산했을 때 20ppm 이하의 잔류 할로겐 화합물 함량을 갖는 경화성 수지를 포함하는 판독 전용 광학 디스크.
  5. 제1항에 있어서, 투명 기판이 13,000 내지 16,000의 중량 평균 분자량을 갖는 폴리카르보네이트를 포함하는 판독 전용 광학 디스크.
  6. 제5항에 있어서, 폴리카르보네이트내에 불순물로서 잔존하는 염소의 양이 20ppm이하인 판독 전용 광학 디스크.
  7. 제1항에 있어서, 투명 기판의 표면이 접촉각 60°이하의 물습윤성을 갖는 판독 전용 광학 디스크.
  8. 제1항에 있어서, 보호층의 경화후 펜슬 경도가 HB이상인 판독 전용 광학 디스크.
  9. 제1항에 있어서, 보호층의 경화처리시 수축률이 0 내지 15%인 판독 전용 광학 디스크.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900007058A 1989-05-18 1990-05-17 판독 전용 광학 디스크 KR900018936A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1125053A JPH0762919B2 (ja) 1989-05-18 1989-05-18 再生専用型光ディスク
JP1-125053 1989-05-18

Publications (1)

Publication Number Publication Date
KR900018936A true KR900018936A (ko) 1990-12-22

Family

ID=14900660

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900007058A KR900018936A (ko) 1989-05-18 1990-05-17 판독 전용 광학 디스크

Country Status (6)

Country Link
US (1) US5276673A (ko)
EP (1) EP0398714B1 (ko)
JP (1) JPH0762919B2 (ko)
KR (1) KR900018936A (ko)
CA (1) CA2017059A1 (ko)
DE (1) DE69012204T2 (ko)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3170062B2 (ja) * 1992-09-25 2001-05-28 パイオニア株式会社 光ディスク
US5698284A (en) * 1994-09-21 1997-12-16 Dai Nippon Printing Co., Ltd. Optical recording medium
JP3241560B2 (ja) * 1995-02-24 2001-12-25 ソニー株式会社 光学記録媒体及びその製造方法
AU744670B2 (en) * 1995-02-24 2002-02-28 Sony Corporation Optical recording medium and method of producing same
AU5810196A (en) * 1995-07-21 1997-02-18 Bod Berlin Optical Disc Gmbh Method of producing an information-bearing disc which can be scanned by a laser beam, and disc produced thereby
JP2001307381A (ja) * 2000-04-24 2001-11-02 Sony Corp 光学記録媒体
US6733950B2 (en) * 2001-03-14 2004-05-11 General Electric Company Limited play data storage media and method for limiting access to data thereon
JP2009076129A (ja) 2007-09-19 2009-04-09 Kobe Steel Ltd 読み出し専用の光情報記録媒体
JP5331420B2 (ja) 2008-09-11 2013-10-30 株式会社神戸製鋼所 読み出し専用の光情報記録媒体および該光情報記録媒体の半透過反射膜形成用スパッタリングターゲット

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5661048A (en) * 1979-10-22 1981-05-26 Nippon Telegr & Teleph Corp <Ntt> Optical memory medium
JPS5720933A (en) * 1980-07-14 1982-02-03 Toshiba Corp Information recording carrier
JPS6119644A (ja) * 1984-07-06 1986-01-28 Idemitsu Petrochem Co Ltd 線状低密度ポリエチレン樹脂組成物
JPS61196445A (ja) * 1985-02-27 1986-08-30 Toshiba Corp 光磁気デイスク
JPS6266444A (ja) * 1985-09-19 1987-03-25 Sharp Corp 光メモリ素子用フオトマスク
US5013594A (en) * 1987-09-25 1991-05-07 Hitachi Maxwell, Ltd. Optical information recording medium and its production
US5155723A (en) * 1988-07-30 1992-10-13 Yuden Co., Ltd. Taiyo Optical information recording method and medium
JPH0244544A (ja) * 1988-08-03 1990-02-14 Matsushita Electric Ind Co Ltd Ｖ溝光ディスク原盤
US5215799A (en) * 1989-01-25 1993-06-01 Idemitsu Petrochemical Co., Ltd. Optical disk substrate and optical information-storage medium

Also Published As

Publication number Publication date
CA2017059A1 (en) 1990-11-18
JPH02304734A (ja) 1990-12-18
EP0398714A2 (en) 1990-11-22
EP0398714B1 (en) 1994-09-07
DE69012204D1 (de) 1994-10-13
US5276673A (en) 1994-01-04
EP0398714A3 (en) 1991-01-16
JPH0762919B2 (ja) 1995-07-05
DE69012204T2 (de) 1995-01-19

Similar Documents

Publication Publication Date Title
KR860003591A (ko) 광디스크
KR900018936A (ko) 판독 전용 광학 디스크
KR910003602A (ko) 광정보 기록 매체
ES2189882T3 (es) Junta de turbina.
TW267216B (ko)
KR900010688A (ko) 박리 가능한 보호 필름을 가진 광학정보 기록매체
KR890013613A (ko) 해독 전용 광학 디스크상에 정보를 첨부하기 위한 방법
KR870006533A (ko) 정보 기록 매체
KR910014887A (ko) 형광성 광 디스크
KR910003605A (ko) 광정보 기록 매체
DE69221781T2 (de) Grundierschicht für Plastiklinse
WO1995022083A3 (en) Photomask blanks
KR930004215A (ko) 열-차단 유리
FR2513572A1 (fr) Carte d&#39;identite scellee
ATE156850T1 (de) Zusammensetzung aromatischer polycarbonate
AU550750B2 (en) Optically readable record carrier
DE60138191D1 (de) Flschungsveränderungsschutzmaterial
KR890004283A (ko) 광학식 기록 디스크
JPS57130241A (en) Information storage medium
KR840008876A (ko) 고감도 광학기록매체 및 그 제조방법
KR930006654A (ko) 광 디스크
EP0404599A3 (en) Optical memory device
KR880010466A (ko) 방폭형 음극선관
JPS59162652A (ja) 光学的に読取り可能な情報デイスク
JPS6037700Y2 (ja) デイスクレコ−ドの構造

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
NORF Unpaid initial registration fee