WO1999046771A1 - Disque optique et bague pour disque optique - Google Patents

Disque optique et bague pour disque optique Download PDF

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Publication number
WO1999046771A1
WO1999046771A1 PCT/JP1999/000883 JP9900883W WO9946771A1 WO 1999046771 A1 WO1999046771 A1 WO 1999046771A1 JP 9900883 W JP9900883 W JP 9900883W WO 9946771 A1 WO9946771 A1 WO 9946771A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical disk
optical
ring
optical disc
disk
Prior art date
Application number
PCT/JP1999/000883
Other languages
English (en)
Japanese (ja)
Inventor
Hideki Izumi
Original Assignee
Hideki Izumi
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 Hideki Izumi filed Critical Hideki Izumi
Publication of WO1999046771A1 publication Critical patent/WO1999046771A1/fr

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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

Abstract

La présente invention concerne un disque optique (10) dont la zone proche du bord périphérique externe est pourvu d'une pluralité de trous traversants (12) joignant entre elles la face supérieure et la face inférieure (11A, 11B). Ces trous sont inclinés par rapport au sens de rotation du disque optique. Il en résulte une force ayant tendance à appliquer le disque sur la platine (24) concourant à empêcher les vibrations superficielles pendant la rotation du disque optique. Selon d'autres réalisations, ces trous traversants (12) peuvent être remplacés par des sillons inclinés (34) ou des protubérances en forme d'ailettes au niveau de la surface du bord périphérique externe du disque optique.
PCT/JP1999/000883 1998-03-12 1999-02-25 Disque optique et bague pour disque optique WO1999046771A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP8291098 1998-03-12
JP10/82910 1998-03-12
JP10/193792 1998-06-23
JP10193792A JPH11328727A (ja) 1998-03-12 1998-06-23 光ディスク及び光ディスク用リング

Publications (1)

Publication Number Publication Date
WO1999046771A1 true WO1999046771A1 (fr) 1999-09-16

Family

ID=26423938

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/JP1999/000883 WO1999046771A1 (fr) 1998-03-12 1999-02-25 Disque optique et bague pour disque optique
PCT/JP1999/000882 WO1999046770A1 (fr) 1998-03-12 1999-02-25 Disque optique

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/000882 WO1999046770A1 (fr) 1998-03-12 1999-02-25 Disque optique

Country Status (2)

Country Link
JP (1) JPH11328727A (fr)
WO (2) WO1999046771A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11247288B2 (en) 2017-12-19 2022-02-15 Daihen Corporation Welding position detection device, welding position detection method, and welding robot system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6562432B2 (en) 2000-09-29 2003-05-13 Ricoh Company, Ltd. Optical recording medium and method of manufacturing the optical recording medium
US20020136155A1 (en) * 2001-03-06 2002-09-26 Chieh-Ho Chen CD safe to hold
US6865745B2 (en) * 2001-08-10 2005-03-08 Wea Manufacturing, Inc. Methods and apparatus for reducing the shrinkage of an optical disc's clamp area and the resulting optical disc

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5712009U (fr) * 1980-06-24 1982-01-21
JPH0652060U (ja) * 1992-12-08 1994-07-15 九州日立マクセル株式会社 ディスク用ガードリング
JPH06309701A (ja) * 1993-04-28 1994-11-04 Ricoh Co Ltd ディスク状記録媒体

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0547035A (ja) * 1991-08-15 1993-02-26 Japan Synthetic Rubber Co Ltd 光デイスク基板
JPH05138679A (ja) * 1991-11-20 1993-06-08 Matsushita Electric Ind Co Ltd 光デイスク用樹脂成形基材および金型

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5712009U (fr) * 1980-06-24 1982-01-21
JPH0652060U (ja) * 1992-12-08 1994-07-15 九州日立マクセル株式会社 ディスク用ガードリング
JPH06309701A (ja) * 1993-04-28 1994-11-04 Ricoh Co Ltd ディスク状記録媒体

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11247288B2 (en) 2017-12-19 2022-02-15 Daihen Corporation Welding position detection device, welding position detection method, and welding robot system

Also Published As

Publication number Publication date
JPH11328727A (ja) 1999-11-30
WO1999046770A1 (fr) 1999-09-16

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