JP4317118B2 - 熱アシスト磁気記録方法 - Google Patents
熱アシスト磁気記録方法 Download PDFInfo
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- JP4317118B2 JP4317118B2 JP2004341805A JP2004341805A JP4317118B2 JP 4317118 B2 JP4317118 B2 JP 4317118B2 JP 2004341805 A JP2004341805 A JP 2004341805A JP 2004341805 A JP2004341805 A JP 2004341805A JP 4317118 B2 JP4317118 B2 JP 4317118B2
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- recording
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- magnetic field
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- magnetic film
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- 238000000034 method Methods 0.000 title claims description 62
- 238000010438 heat treatment Methods 0.000 claims description 117
- 230000007704 transition Effects 0.000 claims description 13
- 230000003313 weakening effect Effects 0.000 claims description 3
- 230000005764 inhibitory process Effects 0.000 claims 1
- 238000005728 strengthening Methods 0.000 claims 1
- 238000007796 conventional method Methods 0.000 description 16
- 230000005415 magnetization Effects 0.000 description 10
- 230000002829 reductive effect Effects 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- 230000005381 magnetic domain Effects 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- -1 rare earth transition metal Chemical class 0.000 description 1
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- 229920005989 resin Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
Images
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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
-
- 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
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0005—Arrangements, methods or circuits
- G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal
Description
12,42 記録磁性膜
20,50 スライダ
22,52 集光レンズ
23,53 磁気ヘッド
L レーザ
Hr 記録磁界
T トラック
Y ユーザデータ領域
S サーボパターン領域
N1,N2 非記録領域
Claims (3)
- 相互に隣接する記録対象領域および記録禁止領域を含む記録磁性膜を有する磁気記録媒体における熱アシスト磁気記録方法であって、
前記記録磁性膜に対して加熱手段を対向させて相対移動させながら、当該加熱手段により前記記録対象領域内の前記記録磁性膜を局所的に加熱し、且つ、前記記録磁性膜における前記加熱手段の対向箇所が前記記録対象領域から前記記録禁止領域へと移行する前に当該加熱手段による加熱を停止し、
前記記録磁性膜に対して磁界印加手段を対向させて前記加熱手段に伴って相対移動させながら、当該磁界印加手段により前記記録対象領域内の前記記録磁性膜に対して局所的に記録磁界を印加して信号を記録し、且つ、前記加熱手段による前記加熱の停止の後であって、前記記録磁性膜における前記磁界印加手段の対向箇所が前記記録対象領域から前記記録禁止領域へと移行する前に、当該磁界印加手段による記録磁界の印加を停止する、熱アシスト磁気記録方法。 - 相互に隣接する記録対象領域および記録禁止領域を含む記録磁性膜を有する磁気記録媒体における熱アシスト磁気記録方法であって、
前記記録磁性膜に対して加熱手段を対向させて相対移動させながら、当該加熱手段により前記記録対象領域内の前記記録磁性膜を局所的に加熱し、前記記録磁性膜における前記加熱手段の対向箇所が前記記録対象領域から前記記録禁止領域へと移行する前に当該加熱手段による加熱を弱め、且つ、前記記録磁性膜における前記加熱手段の対向箇所が前記記録禁止領域から前記記録対象領域へと移行するのに対応して当該加熱手段による加熱を強め、
前記記録磁性膜に対して磁界印加手段を対向させて前記加熱手段に伴って相対移動させながら、当該磁界印加手段により前記記録対象領域内の前記記録磁性膜に対して局所的に記録磁界を印加して信号を記録し、前記加熱手段による前記加熱を弱めた後であって、前記記録磁性膜における前記磁界印加手段の対向箇所が前記記録対象領域から前記記録禁止領域へと移行する前に、当該磁界印加手段による記録磁界の印加を停止し、且つ、前記記録磁性膜における前記磁界印加手段の対向箇所が前記記録禁止領域から前記記録対象領域へと移行した後に当該磁界印加手段による記録磁界の印加を開始する、熱アシスト磁気記録方法。 - 相互に隣接する記録対象領域および記録禁止領域を含む記録磁性膜を有する磁気記録媒体における熱アシスト磁気記録方法であって、
前記記録磁性膜に対して加熱手段を対向させて相対移動させながら、当該加熱手段により前記記録対象領域内の前記記録磁性膜を第1加熱レベルで局所的に加熱し、前記記録磁性膜における前記加熱手段の対向箇所が前記記録対象領域から前記記録禁止領域へと移行する前に当該加熱手段による加熱を停止し、且つ、前記記録磁性膜における前記加熱手段の対向箇所が前記記録禁止領域から前記記録対象領域へと移行するのに対応して前記第1加熱レベルより強い第2加熱レベルで前記記録対象領域内の前記記録磁性膜を当該加熱手段により局所的に一旦加熱した後、当該加熱手段による加熱を前記第1加熱レベルに弱め、
前記記録磁性膜に対して磁界印加手段を対向させて前記加熱手段とともに相対移動させながら、当該磁界印加手段により前記記録対象領域内の前記記録磁性膜に対して局所的に記録磁界を印加して信号を記録し、前記加熱手段による前記加熱の停止の後であって、前記記録磁性膜における前記磁界印加手段の対向箇所が前記記録対象領域から前記記録禁止領域へと移行する前に、当該磁界印加手段による記録磁界の印加を停止し、且つ、前記記録磁性膜における前記磁界印加手段の対向箇所が前記記録禁止領域から前記記録対象領域へと移行した後に当該磁界印加手段による記録磁界の印加を開始する、熱アシスト磁気記録方法。
Priority Applications (2)
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JP2004341805A JP4317118B2 (ja) | 2004-11-26 | 2004-11-26 | 熱アシスト磁気記録方法 |
US11/068,359 US7099097B2 (en) | 2004-11-26 | 2005-02-28 | Thermally assisted magnetic recording method |
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JP2004341805A JP4317118B2 (ja) | 2004-11-26 | 2004-11-26 | 熱アシスト磁気記録方法 |
Publications (2)
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JP2006155708A JP2006155708A (ja) | 2006-06-15 |
JP4317118B2 true JP4317118B2 (ja) | 2009-08-19 |
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JP2004341805A Expired - Fee Related JP4317118B2 (ja) | 2004-11-26 | 2004-11-26 | 熱アシスト磁気記録方法 |
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JP (1) | JP4317118B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7907302B2 (en) | 2001-07-09 | 2011-03-15 | Ricoh Company, Ltd. | Printing system, printing method, data server, recording medium, and program for performing printing via a communications network |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4095623B2 (ja) * | 2005-04-05 | 2008-06-04 | 株式会社日立製作所 | 磁気光融合記録装置用ヘッド及びその製造方法 |
US7990647B2 (en) * | 2008-07-03 | 2011-08-02 | Hitachi Global Storage Technologies Netherlands B.V. | Thermally assisted recording head control means for protrusion management |
US8477569B2 (en) | 2010-02-23 | 2013-07-02 | Seagate Technology Llc | Light source power control for heat assisted magnetic recording (HAMR) |
US8374060B2 (en) * | 2011-03-11 | 2013-02-12 | Tdk Corporation | Thermally-assisted magnetic recording method for writing data on a hard disk medium |
US8456980B1 (en) | 2012-03-13 | 2013-06-04 | Western Digital Technologies, Inc. | Disk drive compensating for laser induced head protrusion in heat assisted magnetic recording |
US8441909B1 (en) | 2012-03-13 | 2013-05-14 | Western Digital Technologies, Inc. | Disk drive increasing laser power at beginning of write in heat assisted magnetic recording |
US8619508B1 (en) * | 2012-07-23 | 2013-12-31 | Western Digital Technologies, Inc. | Disk drive adjusting fly height actuator to compensate for laser induced head protrusion in heat assisted magnetic recording |
CN103680521B (zh) * | 2012-07-27 | 2017-04-12 | 希捷科技有限公司 | 具有预加热写元件的热辅助磁性记录装置 |
US9019646B2 (en) | 2012-07-27 | 2015-04-28 | Seagate Technology Llc | Heat assisted magnetic recording device with pre-heated write element |
US8743667B1 (en) * | 2013-02-26 | 2014-06-03 | HGST Netherlands B.V. | Method for controlling writing in a thermally-assisted recording (TAR) disk drive with thermal fly-height control |
US8787125B1 (en) | 2013-03-13 | 2014-07-22 | Western Digital Technologies, Inc. | Disk drive calibrating fly height actuator to enable laser biasing during non-write mode |
US8902718B1 (en) | 2013-05-21 | 2014-12-02 | Western Digital Technologies, Inc. | Disk drive calibrating dynamic fly height write profile for fly height actuator |
US8922929B1 (en) | 2013-06-13 | 2014-12-30 | Western Digital Technologies, Inc. | Disk drive calibrating fly height actuator and laser power for heat assisted magnetic recording |
US8976633B1 (en) | 2014-04-15 | 2015-03-10 | Western Digital Technologies, Inc. | Data storage device calibrating fly height actuator based on laser power for heat assisted magnetic recording |
US9153266B1 (en) | 2014-09-11 | 2015-10-06 | Western Digital Technologies, Inc. | Data storage device measuring laser protrusion fly height profile |
US9472219B1 (en) | 2015-05-01 | 2016-10-18 | Western Digital Technologies, Inc. | Data storage device calibrating parameter for heat assisted magnetic recording |
US9842617B1 (en) | 2015-06-29 | 2017-12-12 | Western Digital Technologies, Inc. | Electronic system with head management mechanism and method of operation thereof |
JP6148750B1 (ja) * | 2016-03-04 | 2017-06-14 | 株式会社東芝 | 磁気記録再生装置 |
JP2021047951A (ja) | 2019-09-19 | 2021-03-25 | 株式会社東芝 | 磁気ディスク装置及びライト処理方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06243527A (ja) | 1993-02-15 | 1994-09-02 | Hitachi Ltd | 磁気記録方法およびその装置 |
JP2003157502A (ja) | 2001-11-22 | 2003-05-30 | Toshiba Corp | 磁気記録装置および磁気記録書き込み方法 |
US6906879B1 (en) * | 2003-12-03 | 2005-06-14 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording system with patterned multilevel perpendicular magnetic recording |
JP2005222669A (ja) * | 2004-01-05 | 2005-08-18 | Fujitsu Ltd | 磁気記録媒体および磁気記憶装置 |
-
2004
- 2004-11-26 JP JP2004341805A patent/JP4317118B2/ja not_active Expired - Fee Related
-
2005
- 2005-02-28 US US11/068,359 patent/US7099097B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7907302B2 (en) | 2001-07-09 | 2011-03-15 | Ricoh Company, Ltd. | Printing system, printing method, data server, recording medium, and program for performing printing via a communications network |
US8405864B2 (en) | 2001-07-09 | 2013-03-26 | Ricoh Company, Ltd. | Application service provider server, data server, recording medium, and program |
US8817309B2 (en) | 2001-07-09 | 2014-08-26 | Ricoh Company, Ltd. | Application service provider server, data server, recording medium, and program |
Also Published As
Publication number | Publication date |
---|---|
JP2006155708A (ja) | 2006-06-15 |
US20060114590A1 (en) | 2006-06-01 |
US7099097B2 (en) | 2006-08-29 |
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