CN1260705C - 高可靠数据保护的磁头 - Google Patents

高可靠数据保护的磁头 Download PDF

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Publication number
CN1260705C
CN1260705C CN01111364.2A CN01111364A CN1260705C CN 1260705 C CN1260705 C CN 1260705C CN 01111364 A CN01111364 A CN 01111364A CN 1260705 C CN1260705 C CN 1260705C
Authority
CN
China
Prior art keywords
magnetic
recording
pole
head
magnetic pole
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
CN01111364.2A
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English (en)
Chinese (zh)
Other versions
CN1313585A (zh
Inventor
富山大士
滨口雄彦
原美纪
赤城文子
西田靖孝
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.)
HGST Japan Ltd
Original Assignee
Hitachi Ltd
Hitachi Global Storage Technologies Japan 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
Application filed by Hitachi Ltd, Hitachi Global Storage Technologies Japan Ltd filed Critical Hitachi Ltd
Publication of CN1313585A publication Critical patent/CN1313585A/zh
Application granted granted Critical
Publication of CN1260705C publication Critical patent/CN1260705C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • 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
    • G11B5/488—Disposition of heads
    • G11B5/4886—Disposition of heads relative to rotating disc

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
CN01111364.2A 2000-03-14 2001-03-14 高可靠数据保护的磁头 Expired - Fee Related CN1260705C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000076333A JP4139546B2 (ja) 2000-03-14 2000-03-14 垂直磁気ディスク装置
JP076333/2000 2000-03-14

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CNB2006100803439A Division CN100487791C (zh) 2000-03-14 2001-03-14 高可靠数据保护磁头及磁盘设备与不会误擦除数据的方法

Publications (2)

Publication Number Publication Date
CN1313585A CN1313585A (zh) 2001-09-19
CN1260705C true CN1260705C (zh) 2006-06-21

Family

ID=18594093

Family Applications (2)

Application Number Title Priority Date Filing Date
CNB2006100803439A Expired - Fee Related CN100487791C (zh) 2000-03-14 2001-03-14 高可靠数据保护磁头及磁盘设备与不会误擦除数据的方法
CN01111364.2A Expired - Fee Related CN1260705C (zh) 2000-03-14 2001-03-14 高可靠数据保护的磁头

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CNB2006100803439A Expired - Fee Related CN100487791C (zh) 2000-03-14 2001-03-14 高可靠数据保护磁头及磁盘设备与不会误擦除数据的方法

Country Status (4)

Country Link
US (3) US6940690B2 (enExample)
JP (1) JP4139546B2 (enExample)
CN (2) CN100487791C (enExample)
SG (1) SG98026A1 (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100370403B1 (ko) * 2000-11-24 2003-01-29 삼성전자 주식회사 수직자기기록 방식의 자기헤드
JP4088453B2 (ja) 2002-02-14 2008-05-21 株式会社日立グローバルストレージテクノロジーズ 垂直記録用磁気ヘッド及びそれを搭載した磁気ディスク装置
JP2004094997A (ja) * 2002-08-29 2004-03-25 Tdk Corp 薄膜磁気ヘッドおよびその製造方法
JP2004259306A (ja) * 2003-02-24 2004-09-16 Hitachi Ltd 磁気記録媒体および磁気記録媒体の製造方法
JP3730627B2 (ja) * 2003-02-28 2006-01-05 株式会社東芝 磁気記録媒体及び磁気記録再生装置
JP2006018902A (ja) * 2004-06-30 2006-01-19 Toshiba Corp ディスクリートトラック媒体を有する垂直磁気記録装置
US6969989B1 (en) * 2005-03-11 2005-11-29 Western Digital (Fremont), Inc. Method for characterizing a perpendicular recording head writing pole
KR100652446B1 (ko) 2005-12-03 2006-12-01 삼성전자주식회사 디스크의 적응적 기록 밀도 조정 방법 및 이용한 디스크드라이브와 디스크
KR100745762B1 (ko) * 2006-02-15 2007-08-02 삼성전자주식회사 수직 자기 헤드 및 그 제조방법
US8339735B2 (en) * 2007-06-29 2012-12-25 Seagate Technology Llc Magnetic writer for patterned stack with increased write field
US9495996B2 (en) 2007-06-29 2016-11-15 Seagate Technology, Llc Writer with increased write field
US7920350B2 (en) * 2008-09-30 2011-04-05 Hitachi Global Storage Technologies, Netherlands, B.V. Adaptive data recovery procedure based on radial positioning
JP2010277624A (ja) * 2009-05-26 2010-12-09 Toshiba Storage Device Corp 磁気記録装置、ヘッド評価装置、スピンスタンド装置およびライトポールイレーズ評価方法
JP2012003805A (ja) * 2010-06-16 2012-01-05 Wd Media (Singapore) Pte. Ltd 垂直磁気記録媒体及び磁気ディスク装置
US8264798B1 (en) 2010-06-23 2012-09-11 Western Digital (Fremont), Llc Systems and methods for providing magnetic recording heads adapted for writing shingled tracks
US8804283B2 (en) * 2011-06-22 2014-08-12 Seagate Technology Llc Chamfered magnetic write pole
US8520337B1 (en) 2012-03-30 2013-08-27 Western Digital (Fremont), Llc Perpendicular magnetic recording writer pole with leading and trailing bevel side wall angles at air bearing surface
US10332557B1 (en) * 2018-09-13 2019-06-25 Seagate Technology Llc Multitrack servo marks with perpendicular and longitudinal magnetic fields

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0311854A1 (de) * 1987-10-16 1989-04-19 Siemens Aktiengesellschaft Dünnfilm-Magnetkopf mit schichtweisem Aufbau zur senkrechten Magnetisierung
US4970616A (en) * 1988-08-17 1990-11-13 Digital Equipment Corporation Recording head to minimize undershoots in readback pulses
JPH03178013A (ja) * 1989-12-06 1991-08-02 Sony Corp 狭トラック磁気ヘッド
US5680283A (en) 1994-09-30 1997-10-21 Kabushiki Kaisha Toshiba Magnetic head and magnetic disk drive
US5872800A (en) * 1996-09-16 1999-02-16 Cirrus Logic, Inc. Write verify method for correcting unrecoverable sectors in a disc storage system using track level redundancy
JPH10241117A (ja) * 1997-02-24 1998-09-11 Fujitsu Ltd 単層磁性膜垂直磁化媒体用記録ヘッド
JP3721255B2 (ja) * 1998-01-13 2005-11-30 株式会社日立グローバルストレージテクノロジーズ 磁気情報記憶装置
US6158107A (en) * 1998-04-02 2000-12-12 International Business Machines Corporation Inverted merged MR head with plated notched first pole tip and self-aligned second pole tip
US6504675B1 (en) * 2000-01-12 2003-01-07 Seagate Technology Llc Perpendicular magnetic recording heads with write pole shaped to reduce skew effects during writing
JP3565492B2 (ja) 2000-02-17 2004-09-15 Ｔｄｋ株式会社 薄膜磁気ヘッド、磁気ヘッド装置及び磁気ディスク装置
KR100370403B1 (ko) * 2000-11-24 2003-01-29 삼성전자 주식회사 수직자기기록 방식의 자기헤드
JP4088453B2 (ja) * 2002-02-14 2008-05-21 株式会社日立グローバルストレージテクノロジーズ 垂直記録用磁気ヘッド及びそれを搭載した磁気ディスク装置

Also Published As

Publication number Publication date
JP2001256605A (ja) 2001-09-21
SG98026A1 (en) 2003-08-20
CN100487791C (zh) 2009-05-13
US20040080856A1 (en) 2004-04-29
CN1313585A (zh) 2001-09-19
US6940690B2 (en) 2005-09-06
CN1855231A (zh) 2006-11-01
US20060028752A1 (en) 2006-02-09
US7221530B2 (en) 2007-05-22
JP4139546B2 (ja) 2008-08-27
US20010030832A1 (en) 2001-10-18

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C06 Publication
PB01 Publication
ASS Succession or assignment of patent right

Owner name: HITACHI GLOBAL STORAGE TECHNOLOGIES JAPAN LTD.

Free format text: FORMER OWNER: HITACHI CO., LTD.

Effective date: 20031224

C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20031224

Address after: Kanagawa, Japan

Applicant after: Hitachi Global Scinece Technology Jappan Co., Ltd.

Address before: Tokyo, Japan

Applicant before: Hitachi Ltd.

C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20060621

Termination date: 20150314

EXPY Termination of patent right or utility model