DE69430494T2 - Magnetplattensubstrat und Magnetplatte unter Verwendung desselben - Google Patents
Magnetplattensubstrat und Magnetplatte unter Verwendung desselbenInfo
- 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
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
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)
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 |
WO1998008217A1 (fr) * | 1996-08-23 | 1998-02-26 | Sony Corporation | Moyen de support de disque et dispositif de disque |
DE69719901T2 (de) * | 1996-10-16 | 2003-09-11 | Ricoh Kk | Bilderzeugungsvorrichtung unter Verwendung eines Zwischenüberträgerbandes und Verfahren dazu |
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 |
JP3344651B2 (ja) | 1998-10-29 | 2002-11-11 | 松下電器産業株式会社 | マスター情報担体を用いた磁気記録媒体の製造方法 |
CN100449616C (zh) | 1999-02-12 | 2009-01-07 | 通用电气公司 | 数据存储介质及其形成方法、压印衬底及检索数据的方法 |
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 |
SG113418A1 (en) * | 2001-05-11 | 2005-08-29 | Fuji Photo Film Co Ltd | Master carrier for magnetic transfer |
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)
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 |
EP0395764A4 (en) * | 1987-12-25 | 1991-05-15 | Nippon Zeon Co., Ltd. | Hydrogenated derivative of ring-opening copolymer and process for its production |
EP0657884B1 (de) * | 1989-01-11 | 1998-09-02 | Hitachi, Ltd. | Verfahren zum magnetischen Aufzeichnen und Wiedergeben von Daten, magnetischer Auzeichnungsträger, sein Herstellungsverfahren und Gerät zur magnetischen Aufzeichnung |
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 |
-
1994
- 1994-11-23 US US08/347,086 patent/US5585989A/en not_active Expired - Lifetime
- 1994-11-28 DE DE69430494T patent/DE69430494T2/de not_active Expired - Fee Related
- 1994-11-28 DE DE69425414T patent/DE69425414T2/de not_active Expired - Fee Related
- 1994-11-28 EP EP94118700A patent/EP0655734B1/de not_active Expired - Lifetime
- 1994-11-28 EP EP00100444A patent/EP1001408B1/de not_active Expired - Lifetime
- 1994-11-29 KR KR1019940031624A patent/KR100348968B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0655734B1 (de) | 2000-08-02 |
DE69425414T2 (de) | 2001-01-25 |
US5585989A (en) | 1996-12-17 |
EP0655734A1 (de) | 1995-05-31 |
DE69430494D1 (de) | 2002-05-29 |
DE69425414D1 (de) | 2000-09-07 |
KR950015219A (ko) | 1995-06-16 |
EP1001408A2 (de) | 2000-05-17 |
KR100348968B1 (ko) | 2003-01-08 |
EP1001408B1 (de) | 2002-04-24 |
EP1001408A3 (de) | 2000-06-14 |
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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 |