DE69325712D1 - Magnetisches aufzeichnungsmedium, dessen aufzeichnungs-/wiedergabeverfahren und informationsverarbeitungssystem, das dieses medium und das verfahren gebraucht - Google Patents

Magnetisches aufzeichnungsmedium, dessen aufzeichnungs-/wiedergabeverfahren und informationsverarbeitungssystem, das dieses medium und das verfahren gebraucht

Info

Publication number
DE69325712D1
DE69325712D1 DE69325712T DE69325712T DE69325712D1 DE 69325712 D1 DE69325712 D1 DE 69325712D1 DE 69325712 T DE69325712 T DE 69325712T DE 69325712 T DE69325712 T DE 69325712T DE 69325712 D1 DE69325712 D1 DE 69325712D1
Authority
DE
Germany
Prior art keywords
media
recording
information processing
processing system
magnetic 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 - Lifetime
Application number
DE69325712T
Other languages
English (en)
Inventor
Yuzo Seo
Shuichi Maeda
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 Chemical Corp
Original Assignee
Mitsubishi Chemical 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
Priority claimed from JP29707692A external-priority patent/JPH06150442A/ja
Priority claimed from JP33627992A external-priority patent/JPH06187630A/ja
Priority claimed from JP33753692A external-priority patent/JPH06187631A/ja
Priority claimed from JP24713693A external-priority patent/JPH07105643A/ja
Application filed by Mitsubishi Chemical Corp filed Critical Mitsubishi Chemical Corp
Application granted granted Critical
Publication of DE69325712D1 publication Critical patent/DE69325712D1/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59677—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks with optical servo tracking
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/733—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the addition of non-magnetic particles
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • G11B5/825—Disk carriers flexible discs
DE69325712T 1992-11-06 1993-11-04 Magnetisches aufzeichnungsmedium, dessen aufzeichnungs-/wiedergabeverfahren und informationsverarbeitungssystem, das dieses medium und das verfahren gebraucht Expired - Lifetime DE69325712D1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP29707692A JPH06150442A (ja) 1992-11-06 1992-11-06 磁気記録媒体
JP33627992A JPH06187630A (ja) 1992-12-16 1992-12-16 磁気記録媒体
JP33753692A JPH06187631A (ja) 1992-12-17 1992-12-17 磁気記録媒体
JP24713693A JPH07105643A (ja) 1993-10-01 1993-10-01 磁気記録媒体およびその記録再生方法ならびにそれを用いた情報処理装置
PCT/JP1993/001593 WO1994011867A1 (en) 1992-11-06 1993-11-04 Magnetic recording medium, its recording/reproducing method and information processor which uses the medium and method

Publications (1)

Publication Number Publication Date
DE69325712D1 true DE69325712D1 (de) 1999-08-26

Family

ID=27478058

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69325712T Expired - Lifetime DE69325712D1 (de) 1992-11-06 1993-11-04 Magnetisches aufzeichnungsmedium, dessen aufzeichnungs-/wiedergabeverfahren und informationsverarbeitungssystem, das dieses medium und das verfahren gebraucht

Country Status (4)

Country Link
US (1) US5619480A (de)
EP (1) EP0650157B1 (de)
DE (1) DE69325712D1 (de)
WO (1) WO1994011867A1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604013A (en) * 1994-06-10 1997-02-18 Mitsubishi Chemical Corporation Magnetic recording medium and recording/reproducing method
US6055139A (en) * 1995-12-14 2000-04-25 Fujitsu Limited Magnetic recording medium and method of forming the same and magnetic disk drive
US5991249A (en) * 1997-07-29 1999-11-23 Hoetron, Inc. Optical track sensing device
US6359747B1 (en) 1998-02-10 2002-03-19 Seagate Technology Llc Hard disk patterning
JP3697458B2 (ja) 1998-11-25 2005-09-21 コニカミノルタオプト株式会社 光記録媒体及びその製造方法並びに光記録媒体を用いた光メモリ装置
US6433951B1 (en) * 1999-02-17 2002-08-13 Imation Corp. Magnetic data storage tape with etched servo pattern, method of manufacturing same, and method of servo positioning on same
US6490117B1 (en) * 1999-03-26 2002-12-03 Seagate Technology Llc Method of thermally printing servo patterns on magnetic media
WO2001043122A2 (en) * 1999-12-10 2001-06-14 Seagate Technology Llc Magnetic disc having physical servo patterns with a magnetic carrier, and method of making and using the same
US6723980B2 (en) 2001-07-16 2004-04-20 Wai-Hon Lee Position sensor with grating to detect moving object with periodic pattern
US8383326B2 (en) * 2007-03-12 2013-02-26 Sony Corporation Optical device and method of making the same using combination of light energy sensitive materials
US7955641B2 (en) * 2007-08-13 2011-06-07 Ultra-Scan Corporation Method of making a piezoelectric device
JP5133291B2 (ja) * 2009-03-31 2013-01-30 富士フイルム株式会社 磁気記録媒体

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633451A (en) * 1982-06-30 1986-12-30 International Business Machines Corporation Optical servo for magnetic disks
JPS61500877A (ja) * 1983-12-27 1986-05-01 エヌ・シ−・ア−ル・コ−ポレ−シヨン 磁気記録媒体及びその追跡装置と方法
US4816939A (en) * 1986-08-21 1989-03-28 Polaroid Corporation Magnetic recording media and servo systems using light-transmitting optical gratings
US4843494A (en) * 1987-10-15 1989-06-27 Polaroid Corporation Data storage apparatus using optical servo tracks
US4961123A (en) * 1988-06-03 1990-10-02 Insite Peripherals Magnetic information media storage with optical servo tracks
US5067039A (en) * 1989-10-20 1991-11-19 Insite Peripherals, Inc. High track density magnetic media with pitted optical servo tracks and method for stamping the tracks on the media
JP2538120B2 (ja) * 1990-10-05 1996-09-25 松下電器産業株式会社 固定磁気ディスクとその製造方法およびそのディスクを用いた固定磁気ディスク装置
US5210672A (en) * 1990-11-09 1993-05-11 Insite Peripherals, Inc. Magnetically indelible media type identification system
EP0484780A1 (de) * 1990-11-09 1992-05-13 Insite Peripherals, Inc. Gestochenes Servomuster und Verfahren zur Positionierung eines optisch-magnetischen Lese-Schreibkopfes
JPH04305844A (ja) * 1991-04-02 1992-10-28 Hitachi Maxell Ltd 情報記録媒体
JP2996261B2 (ja) * 1991-04-02 1999-12-27 日立マクセル株式会社 情報記録媒体
US5283773A (en) * 1992-06-10 1994-02-01 Iomega Corporation Steering laser beam while etching optical servo tracks for magnetic disks

Also Published As

Publication number Publication date
WO1994011867A1 (en) 1994-05-26
EP0650157B1 (de) 1999-07-21
EP0650157A4 (de) 1995-01-12
EP0650157A1 (de) 1995-04-26
US5619480A (en) 1997-04-08

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Legal Events

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8332 No legal effect for de