DE3671998D1 - Optische platte. - Google Patents

Optische platte.

Info

Publication number
DE3671998D1
DE3671998D1 DE8686102099T DE3671998T DE3671998D1 DE 3671998 D1 DE3671998 D1 DE 3671998D1 DE 8686102099 T DE8686102099 T DE 8686102099T DE 3671998 T DE3671998 T DE 3671998T DE 3671998 D1 DE3671998 D1 DE 3671998D1
Authority
DE
Germany
Prior art keywords
optical plate
optical
plate
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 - Lifetime
Application number
DE8686102099T
Other languages
English (en)
Inventor
Tosio Higasihara
Ken Yoshizawa
Masahiro Suzuki
Akira Gotoh
Yoshitane Tuburaya
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell Ltd
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
Priority claimed from JP61030653A external-priority patent/JPH07107751B2/ja
Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Application granted granted Critical
Publication of DE3671998D1 publication Critical patent/DE3671998D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/24015—Air-sandwiched 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
    • G11B7/24097—Structures for detection, control, recording operation or replay operation; Special shapes or structures for centering or eccentricity prevention; Arrangements for testing, inspecting or evaluating; Containers, cartridges or cassettes
    • 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
DE8686102099T 1985-02-18 1986-02-18 Optische platte. Expired - Lifetime DE3671998D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2822185 1985-02-18
JP5236985 1985-03-18
JP61030653A JPH07107751B2 (ja) 1985-03-18 1986-02-17 光デイスクならびにその製造方法

Publications (1)

Publication Number Publication Date
DE3671998D1 true DE3671998D1 (de) 1990-07-19

Family

ID=27286121

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686102099T Expired - Lifetime DE3671998D1 (de) 1985-02-18 1986-02-18 Optische platte.

Country Status (2)

Country Link
EP (1) EP0192244B1 (de)
DE (1) DE3671998D1 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0433555Y2 (de) * 1986-10-30 1992-08-11
JPH0664877B2 (ja) * 1986-11-05 1994-08-22 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
JPH0514365Y2 (de) * 1987-07-27 1993-04-16
US5448547A (en) * 1987-12-01 1995-09-05 Mitsui Petrochemical Industries, Ltd. Information recording discs
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
JPH0734498Y2 (ja) * 1988-02-03 1995-08-02 日東電工株式会社 スペーサー
JPH04106737A (ja) * 1990-08-28 1992-04-08 Toshiba Corp 情報記録媒体
US5666344A (en) * 1991-06-04 1997-09-09 International Business Machines Corporation Multiple data surface optical data storage system
US5586107A (en) * 1991-06-04 1996-12-17 International Business Machines Corporation Multiple data surface optical data storage system
US5255262A (en) * 1991-06-04 1993-10-19 International Business Machines Corporation Multiple data surface optical data storage system with transmissive data surfaces
TW218427B (de) * 1991-06-04 1994-01-01 Ibm
US5449590A (en) * 1991-06-04 1995-09-12 International Business Machines Corporation Multiple data surface optical data storage system
US5644555A (en) * 1995-01-19 1997-07-01 International Business Machines Corporation Multiple data surface magneto-optical data storage system
WO2003090210A2 (en) * 2002-04-22 2003-10-30 Atofina Optical disc construction
MY138480A (en) * 2002-05-09 2009-06-30 Maxtor Corp Method of simultaneous two-disk processing of single-sided magnetic recording disks
US7165308B2 (en) 2002-05-09 2007-01-23 Maxtor Corporation Dual disk transport mechanism processing two disks tilted toward each other
US7083871B2 (en) 2002-05-09 2006-08-01 Maxtor Corporation Single-sided sputtered magnetic recording disks
US7367773B2 (en) 2002-05-09 2008-05-06 Maxtor Corporation Apparatus for combining or separating disk pairs simultaneously
US7027246B2 (en) 2002-05-09 2006-04-11 Maxtor Corporation Method for servo pattern application on single-side processed disks in a merged state
US7052739B2 (en) 2002-05-09 2006-05-30 Maxtor Corporation Method of lubricating multiple magnetic storage disks in close proximity
US7600359B2 (en) 2002-05-09 2009-10-13 Seagate Technology Llc Method of merging two disks concentrically without gap between disks
US7083376B2 (en) 2002-10-10 2006-08-01 Maxtor Corporation Automated merge nest for pairs of magnetic storage disks
US7083502B2 (en) 2002-10-10 2006-08-01 Maxtor Corporation Method for simultaneous two-disk texturing
US8172954B2 (en) 2002-10-10 2012-05-08 Seagate Technology Llc Apparatus for simultaneous two-disk scrubbing and washing
US7168153B2 (en) 2002-10-10 2007-01-30 Maxtor Corporation Method for manufacturing single-sided hard memory disks
US7748532B2 (en) 2002-10-10 2010-07-06 Seagate Technology Llc Cassette for holding disks of different diameters
US7682653B1 (en) 2004-06-17 2010-03-23 Seagate Technology Llc Magnetic disk with uniform lubricant thickness distribution
US7882616B1 (en) 2004-09-02 2011-02-08 Seagate Technology Llc Manufacturing single-sided storage media

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074282A (en) * 1976-05-13 1978-02-14 North American Philips Corporation Radiation-sensitive record with protected sensitive surface
DE2624375C3 (de) * 1976-05-31 1979-01-04 Polygram Gmbh, 2000 Hamburg Plattenförmiger Informationsträger für Bild- bzw. Videosignale
US4331966A (en) * 1980-10-06 1982-05-25 Storage Technology Corporation Information storage device and method of forming same
JPS5766540A (en) * 1980-10-09 1982-04-22 Toshiba Corp Optical information storage carrier and its manufacture
JPS5987636A (ja) * 1982-11-10 1984-05-21 Toshiba Corp 情報記憶媒体
NL8300479A (nl) * 1983-02-09 1984-09-03 Philips Nv Optisch uitleesbare plaat.

Also Published As

Publication number Publication date
EP0192244A1 (de) 1986-08-27
EP0192244B1 (de) 1990-06-13

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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