JPH05225609A - 光ディスク用基板および光ディスク - Google Patents

光ディスク用基板および光ディスク

Info

Publication number
JPH05225609A
JPH05225609A JP4056164A JP5616492A JPH05225609A JP H05225609 A JPH05225609 A JP H05225609A JP 4056164 A JP4056164 A JP 4056164A JP 5616492 A JP5616492 A JP 5616492A JP H05225609 A JPH05225609 A JP H05225609A
Authority
JP
Japan
Prior art keywords
flat plate
substrate
optical disk
section
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.)
Pending
Application number
JP4056164A
Other languages
English (en)
Japanese (ja)
Inventor
Toshifumi Tanaka
敏文 田中
Riki Osanawa
理樹 長縄
Kazuki Suzawa
和樹 須澤
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.)
TDK Corp
Original Assignee
TDK 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
Application filed by TDK Corp filed Critical TDK Corp
Priority to JP4056164A priority Critical patent/JPH05225609A/ja
Priority to EP93101815A priority patent/EP0554885A2/en
Publication of JPH05225609A publication Critical patent/JPH05225609A/ja
Priority to US08/430,167 priority patent/US5541910A/en
Pending 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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
    • G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
    • G11B23/0028—Details
    • G11B23/0035—Details means incorporated in the disc, e.g. hub, to enable its guiding, loading or driving

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
JP4056164A 1992-02-06 1992-02-06 光ディスク用基板および光ディスク Pending JPH05225609A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP4056164A JPH05225609A (ja) 1992-02-06 1992-02-06 光ディスク用基板および光ディスク
EP93101815A EP0554885A2 (en) 1992-02-06 1993-02-05 Optical disk substrate and optical disk using the same
US08/430,167 US5541910A (en) 1992-02-06 1995-04-27 Optical disk substrate and optical disk using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4056164A JPH05225609A (ja) 1992-02-06 1992-02-06 光ディスク用基板および光ディスク

Publications (1)

Publication Number Publication Date
JPH05225609A true JPH05225609A (ja) 1993-09-03

Family

ID=13019457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4056164A Pending JPH05225609A (ja) 1992-02-06 1992-02-06 光ディスク用基板および光ディスク

Country Status (3)

Country Link
US (1) US5541910A (enExample)
EP (1) EP0554885A2 (enExample)
JP (1) JPH05225609A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7305689B2 (en) 1999-06-22 2007-12-04 Sony Corporation Optical recording medium and disc cartridge

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5662979A (en) * 1994-08-25 1997-09-02 Sony Corporation Substrate for optical disc
JPH10269621A (ja) * 1997-03-25 1998-10-09 Sony Corp 光ディスク基板及びこれを用いた光ディスク
US6238763B1 (en) 1998-01-06 2001-05-29 Imation Corp. Rewritable optical data storage disk having enhanced flatness
US5972461A (en) 1998-01-06 1999-10-26 Imation Corp. Rewritable optical data storage disk having enhanced flatness
US6495235B2 (en) * 2000-03-24 2002-12-17 Matsushita Electric Industrial Co., Ltd. Optical disk, substrate of the same, and mold for forming the substrate
US6690642B2 (en) * 2000-05-17 2004-02-10 Computech International Ventures Limited Optical disk
KR100378086B1 (ko) * 2001-05-14 2003-03-29 엘지전자 주식회사 클랭핑 영역의 상하면이 서로다른 높이를 갖는 고밀도 광디스크
KR100438700B1 (ko) * 2001-08-14 2004-07-05 삼성전자주식회사 투과층 형성방법, 장치 및 디스크 기판
US6667953B2 (en) * 2001-12-21 2003-12-23 Seth Matson Optical disk protector and method of use
KR100641128B1 (ko) 2002-07-12 2006-11-02 엘지전자 주식회사 이동 통신 시스템의 무선원격 검침장치 및 제어방법
JP3976655B2 (ja) * 2002-09-27 2007-09-19 Ｔｄｋ株式会社 光記録媒体用中間体、成形金型、成形機、および光記録媒体の製造方法
JP4080941B2 (ja) * 2003-04-24 2008-04-23 Ｔｄｋ株式会社 情報記録媒体用中間体、情報記録媒体の製造方法および情報記録媒体の製造装置
BRPI0410982A (pt) 2003-06-03 2006-10-17 Lg Electronics Inc meio de gravação de alta densidade e dispositivo de gravação e/ou de reprodução para o mesmo
FR2887678B1 (fr) * 2005-06-28 2007-09-28 Digital Valley Disque numerique universel
DE06023769T1 (de) * 2006-11-15 2008-10-23 Ods Technology Gmbh EcoDisc
US20080115157A1 (en) * 2006-11-15 2008-05-15 Al Fetouhi Optical Medium Structure
DE06023768T1 (de) * 2006-11-15 2008-10-23 Ods Technology Gmbh EcoDisc
EP1923873A1 (en) 2006-11-15 2008-05-21 ODS Technology GmbH EcoDisc

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0636253B2 (ja) * 1983-08-18 1994-05-11 シャープ株式会社 光メモリ円板
JPS6085724U (ja) * 1983-11-17 1985-06-13 シャープ株式会社 光メモリ円板
KR900004661B1 (ko) * 1986-01-20 1990-07-02 가부시키가이샤 도시바 정보처리장치
EP0277235B1 (en) * 1986-07-22 1992-12-30 Mitsubishi Denki Kabushiki Kaisha Optical disc
JPH07122969B2 (ja) * 1986-11-05 1995-12-25 株式会社東芝 情報記憶媒体
JPS647391A (en) * 1987-03-16 1989-01-11 Pioneer Electronic Corp Optical information disk
JPH0731422Y2 (ja) * 1987-12-01 1995-07-19 三井石油化学工業株式会社 光ディスク
JPH01189064A (ja) * 1988-01-22 1989-07-28 Seiko Epson Corp 光記録装置
JPH01253886A (ja) * 1988-03-31 1989-10-11 Matsushita Electric Ind Co Ltd 平板状情報記録担体
US5128818A (en) * 1989-01-17 1992-07-07 Canon Denshi Kabushiki Kaisha Stable disc unit having reduced thickness
CA2030899A1 (en) * 1989-11-27 1991-05-28 Masayoshi Kurisu Information rercording media

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7305689B2 (en) 1999-06-22 2007-12-04 Sony Corporation Optical recording medium and disc cartridge
US7454771B2 (en) 1999-06-22 2008-11-18 Sony Corporation Optical recording medium and disc cartridge

Also Published As

Publication number Publication date
EP0554885A2 (en) 1993-08-11
EP0554885A3 (enExample) 1994-01-05
US5541910A (en) 1996-07-30

Similar Documents

Publication Publication Date Title
JPH05225609A (ja) 光ディスク用基板および光ディスク
US6077349A (en) Method and apparatus for manufacturing disc-shaped recording medium
US6312781B1 (en) Disc-shaped recording medium with a protective film
US7509661B2 (en) Optical disk including a preventing structure for preventing surfaces of the optical disk and other optical disks from adhering to each other when the optical disk and the other optical disk are stacked and method of manufacturing the same
EP0215846B1 (en) Two-sided optical recording medium
FR2497994A1 (fr) Support de memoire magneto-optique
EP1184858A2 (en) Optical information recording medium and method for optical recording, reproducing and erasing information
JP2002092962A (ja) 光学情報記録媒体
US7478413B2 (en) Optical recording medium
JP2532274B2 (ja) 光ディスク
JP2765858B2 (ja) 磁界変調型デイスク
JPH09320115A (ja) 光ディスク
JP2540464B2 (ja) 光ディスク用基板の製造方法
JPH03105741A (ja) 光磁気記録媒体用基板
JP2003157575A (ja) 光ディスク及び光ディスク記録再生装置
JPH0559495B2 (enExample)
JP2005158226A (ja) 光学記録媒体および光学記録媒体の製造方法
JPH10208322A (ja) 光磁気記録媒体
EP0524449A1 (en) Magneto-optical recording medium
JPS6262443A (ja) 光学式記録再生デイスク
JPH03133689A (ja) 光ディスク
JPS63213135A (ja) 光デイスク
JPH0714210A (ja) 光情報記録媒体
WO1994028545A1 (en) Substrate for optical disc and optical disc which uses the substrate
JPH05234129A (ja) 光記録媒体

Legal Events

Date Code Title Description
A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20010306