DE69430494T2 - Magnetplattensubstrat und Magnetplatte unter Verwendung desselben - Google Patents

Magnetplattensubstrat und Magnetplatte unter Verwendung desselben

Info

Publication number
DE69430494T2
DE69430494T2 DE69430494T DE69430494T DE69430494T2 DE 69430494 T2 DE69430494 T2 DE 69430494T2 DE 69430494 T DE69430494 T DE 69430494T DE 69430494 T DE69430494 T DE 69430494T DE 69430494 T2 DE69430494 T2 DE 69430494T2
Authority
DE
Germany
Prior art keywords
magnetic disk
same
substrate
disk substrate
magnetic
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 - Fee Related
Application number
DE69430494T
Other languages
English (en)
Other versions
DE69430494D1 (de
Inventor
Miyuki Kuromiya
Hiroshi Takino
Masayoshi Oshima
Teiji Kohara
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.)
Zeon Corp
Sony Corp
Original Assignee
Sony Corp
Nippon Zeon Co 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 JP30027893A external-priority patent/JPH07153060A/ja
Priority claimed from JP2247694A external-priority patent/JPH07210855A/ja
Application filed by Sony Corp, Nippon Zeon Co Ltd filed Critical Sony Corp
Application granted granted Critical
Publication of DE69430494D1 publication Critical patent/DE69430494D1/de
Publication of DE69430494T2 publication Critical patent/DE69430494T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B5/74—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
    • G11B5/62—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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73937—Substrates having an organic polymer comprising a ring structure
    • 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
    • G11B5/59633—Servo formatting
DE69430494T 1993-11-30 1994-11-28 Magnetplattensubstrat und Magnetplatte unter Verwendung desselben Expired - Fee Related DE69430494T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP30027893A JPH07153060A (ja) 1993-11-30 1993-11-30 磁気ディスク基板およびこれを用いた磁気ディスク
JP30027993 1993-11-30
JP2247694A JPH07210855A (ja) 1993-11-30 1994-02-21 磁気ディスク基板およびこれを用いた磁気ディスク

Publications (2)

Publication Number Publication Date
DE69430494D1 DE69430494D1 (de) 2002-05-29
DE69430494T2 true DE69430494T2 (de) 2002-11-14

Family

ID=27283857

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69430494T Expired - Fee Related DE69430494T2 (de) 1993-11-30 1994-11-28 Magnetplattensubstrat und Magnetplatte unter Verwendung desselben
DE69425414T Expired - Fee Related DE69425414T2 (de) 1993-11-30 1994-11-28 Magnetplattensubstrat und Magnetplatte welche dieses verwendet

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69425414T Expired - Fee Related DE69425414T2 (de) 1993-11-30 1994-11-28 Magnetplattensubstrat und Magnetplatte welche dieses verwendet

Country Status (4)

Country Link
US (1) US5585989A (de)
EP (2) EP0655734B1 (de)
KR (1) KR100348968B1 (de)
DE (2) DE69430494T2 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6424479B1 (en) * 1995-01-20 2002-07-23 Sony Corporation Magnetic disk having address information in a form which represents grey code between neighboring recording tracks and a reproducing apparatus therefor
JPH0935407A (ja) * 1995-07-20 1997-02-07 Hitachi Ltd 磁気ディスク装置
US6104579A (en) * 1996-04-11 2000-08-15 Sony Corporation Magnetic disk head having data zone and control signal zones which generate different lifts when flown over by a head slider
TW342495B (en) * 1996-07-22 1998-10-11 Matsushita Electric Ind Co Ltd Master information carrier, method of producing the same, and method for recording master information signal on magnetic recording medium
KR100467996B1 (ko) * 1996-08-23 2005-05-24 소니 가부시끼 가이샤 디스크매체용기판및디스크장치
EP1202126B1 (de) * 1996-10-16 2006-06-21 Ricoh Company, Ltd. Mehrfarbenbilderzeugungsgerät unter Verwendung eines Zwischenüberträgerbandes
JPH11161944A (ja) * 1997-11-27 1999-06-18 Sony Corp 磁気ディスク及び磁気ディスク装置
US6359747B1 (en) 1998-02-10 2002-03-19 Seagate Technology Llc Hard disk patterning
JP3329259B2 (ja) 1998-03-20 2002-09-30 松下電器産業株式会社 マスター情報担体、および、磁気記録媒体の製造方法
JP3361740B2 (ja) 1998-03-23 2003-01-07 松下電器産業株式会社 マスター情報磁気記録装置及び磁気記録媒体の製造方法
US6764734B2 (en) * 1998-05-19 2004-07-20 Seagate Technology Llc High modulus and high damping plastic composite disc substrate for improved servo control by injection and co-injection molding
US6714367B1 (en) 1998-10-29 2004-03-30 Matsushita Electric Industrial Co., Ltd. Master information medium and method of master information recording
KR100755089B1 (ko) 1999-02-12 2007-09-03 제너럴 일렉트릭 캄파니 저장 매체, 기판 제조 방법, 데이터 검색 방법, 엠보싱 방법 및 데이터 저장 매체 형성 방법
US6490117B1 (en) * 1999-03-26 2002-12-03 Seagate Technology Llc Method of thermally printing servo patterns on magnetic media
US6490111B1 (en) 1999-08-25 2002-12-03 Seagate Technology Llc Method and apparatus for refreshing servo patterns in a disc drive
JP2002037866A (ja) 2000-07-25 2002-02-06 Fuji Electric Co Ltd 熱可塑性ノルボルネン系樹脂の乾燥方法、この樹脂を使用した磁気記録媒体用基板およびこの基板を用いた磁気記録媒体、並びにこの磁気記録媒体の製造方法
JPWO2002021517A1 (ja) 2000-09-04 2004-01-15 日本ゼオン株式会社 磁気ディスク基板及び磁気ディスク
KR20020086291A (ko) * 2001-05-11 2002-11-18 후지 샤신 필름 가부시기가이샤 자기전사용 마스터담체
US6738205B1 (en) 2001-07-08 2004-05-18 Maxtor Corporation Self-writing of servo patterns in disk drives
US6757116B1 (en) * 2001-08-16 2004-06-29 Seagate Technology Llc Disk biasing for manufacture of servo patterned media
US7684152B2 (en) * 2004-09-24 2010-03-23 Wd Media, Inc. Method of mitigating eccentricity in a disk drive with DTR media
JP2007066390A (ja) * 2005-08-30 2007-03-15 Konica Minolta Opto Inc 磁気記録媒体用基板、及び磁気記録媒体用基板の製造方法
US7612961B2 (en) * 2007-10-12 2009-11-03 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk and disk drive with patterned phase-type servo fields for read/write head positioning
US7924519B2 (en) * 2008-09-29 2011-04-12 Wd Media, Inc. Eccentricity determination for a disk
JP2013033577A (ja) 2011-07-01 2013-02-14 Ntn Corp 記録ディスク駆動装置およびその樹脂部品
RU2556427C1 (ru) * 2014-03-24 2015-07-10 Открытое акционерное общество "Научно-производственное предприятие "Исток" имени А.И. Шокина" (ОАО "НПП "Исток им. Шокина") Аттенюатор свч

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6026024A (ja) * 1983-07-21 1985-02-08 Nippon Zeon Co Ltd 光学材料
JPS60155424A (ja) * 1984-01-26 1985-08-15 Daicel Chem Ind Ltd 大径のポリカ−ボネ−ト製光デイスク基板およびその製造法
US4738885A (en) * 1986-02-24 1988-04-19 Kyocera Corporation Magnetic disk, substrate therefor and process for preparation thereof
WO1989006253A1 (en) * 1987-12-25 1989-07-13 Nippon Zeon Co., Ltd. Hydrogenated derivative of ring-opening copolymer and process for its production
DE69021741T2 (de) * 1989-01-11 1996-04-18 Hitachi Ltd Magnetischer Aufzeichnungsträger und Verfahren zum magnetischen Aufzeichnen und Wiedergeben von Daten.
JP2729317B2 (ja) * 1989-06-10 1998-03-18 日本ゼオン株式会社 光ディスク
JPH04218557A (ja) * 1990-04-13 1992-08-10 Nippon Zeon Co Ltd 熱可塑性飽和ノルボルネン系ポリマー成形品
US5247612A (en) * 1990-06-29 1993-09-21 Radius Inc. Pixel display apparatus and method using a first-in, first-out buffer
US5379171A (en) * 1991-09-25 1995-01-03 Integral Peripherals Microminiature hard disk drive
DE4137427C1 (de) * 1991-11-14 1993-01-14 Hoechst Ag, 6230 Frankfurt, De
JPH05234074A (ja) * 1992-02-21 1993-09-10 Tdk Corp 磁気ディスクの製造方法および磁気ディスク
JPH05282702A (ja) * 1992-03-18 1993-10-29 Kuraray Co Ltd 情報信号記録媒体の基板
JP3254743B2 (ja) * 1992-08-17 2002-02-12 ソニー株式会社 位置決め信号の書き込み方法

Also Published As

Publication number Publication date
EP0655734B1 (de) 2000-08-02
EP1001408A2 (de) 2000-05-17
DE69430494D1 (de) 2002-05-29
KR100348968B1 (ko) 2003-01-08
EP1001408A3 (de) 2000-06-14
US5585989A (en) 1996-12-17
EP0655734A1 (de) 1995-05-31
EP1001408B1 (de) 2002-04-24
DE69425414D1 (de) 2000-09-07
DE69425414T2 (de) 2001-01-25
KR950015219A (ko) 1995-06-16

Similar Documents

Publication Publication Date Title
DE69430494T2 (de) Magnetplattensubstrat und Magnetplatte unter Verwendung desselben
DE69409745D1 (de) Flachmontierte Scheibenanordnung
DE69424993T2 (de) Datenaufzeichnungsträger und elektronisches gerät unter verwendung desselben
DE69229140T2 (de) Aufzeichnungsschicht und Aufzeichnungsverfahren
DE69323583T2 (de) Magnetplatteneinheit
DE69322488D1 (de) Magnetische Aufzeichnungsmaterialien
DE69426313D1 (de) Plattengerät
DE69426576D1 (de) Magnetische Platteneinheit
DE69410612D1 (de) Magnetplattenvorrichtung
DE69610453D1 (de) Weichmagnetischer dünner Film und Dünnfilmmagnetelement unter Verwendung desselben
DE69824247D1 (de) Magnetische Dünnschicht und Magnetkopf unter Benützung desselben
DE69409063D1 (de) Aufzeichnungsmaterial
DE4291013T1 (de) Befestigerbeschichtung und Beschichtungsverfahren dafür
DE69834585D1 (de) Magnetischer dünner Film und Magnetelement unter Verwendung desselben
DE19981377T1 (de) Plattenkassette und mit der Plattenkassette ausgestattetes Kassettensystem
DE69429400T2 (de) Magnetisches Aufzeichnungsgerät
DE59302103D1 (de) Spule mit Scheiben
FI956192A (fi) Alustamateriaali
DE69329970D1 (de) Plattengerät
DE69227442T2 (de) Magnetische elektronenlinse und Elektronenmikroskop unter Verwendung derselbe.
DE69321442D1 (de) Magnetplatteneinheit
KR940024240U (ko) 자기원반
SE9303901D0 (sv) Discställ
KR950009738U (ko) 광자기 디스크용 기판
KR970008464U (ko) 자석 협지판을 형성한 화스너

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee