SG119376A1 - Magnetic recording media and magnetic recording and reproducing apparatus - Google Patents

Magnetic recording media and magnetic recording and reproducing apparatus

Info

Publication number
SG119376A1
SG119376A1 SG200504953A SG200504953A SG119376A1 SG 119376 A1 SG119376 A1 SG 119376A1 SG 200504953 A SG200504953 A SG 200504953A SG 200504953 A SG200504953 A SG 200504953A SG 119376 A1 SG119376 A1 SG 119376A1
Authority
SG
Singapore
Prior art keywords
magnetic recording
reproducing apparatus
recording media
media
magnetic
Prior art date
Application number
SG200504953A
Other languages
English (en)
Inventor
Sakurai Masatoshi
Kikitsu Akira
Asakura Makoto
Original Assignee
Toshiba Kk
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 Toshiba Kk filed Critical Toshiba Kk
Publication of SG119376A1 publication Critical patent/SG119376A1/en

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
    • G11B5/127—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
SG200504953A 2004-08-06 2005-07-29 Magnetic recording media and magnetic recording and reproducing apparatus SG119376A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004230939A JP4358067B2 (ja) 2004-08-06 2004-08-06 磁気記録媒体および磁気記録装置

Publications (1)

Publication Number Publication Date
SG119376A1 true SG119376A1 (en) 2006-02-28

Family

ID=35757123

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200504953A SG119376A1 (en) 2004-08-06 2005-07-29 Magnetic recording media and magnetic recording and reproducing apparatus

Country Status (4)

Country Link
US (1) US7345838B2 (ja)
JP (1) JP4358067B2 (ja)
CN (1) CN100411018C (ja)
SG (1) SG119376A1 (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100429697C (zh) * 2005-02-16 2008-10-29 Tdk股份有限公司 磁记录介质、记录重放装置及压印模
JP4649262B2 (ja) 2005-04-19 2011-03-09 株式会社東芝 磁気記録媒体の製造方法
JP4585476B2 (ja) 2006-03-16 2010-11-24 株式会社東芝 パターンド媒体および磁気記録装置
JP4675812B2 (ja) * 2006-03-30 2011-04-27 株式会社東芝 磁気記録媒体、磁気記録装置および磁気記録媒体の製造方法
US7388728B1 (en) * 2006-09-22 2008-06-17 Western Digital Technologies, Inc. System and method for writing servo sectors in a perpendicular media recording environment
US7466509B1 (en) 2006-09-22 2008-12-16 Western Digital Technologies, Inc. Disk drive operable with first and second servo patterns in a perpendicular media recording environment
US7715137B2 (en) * 2006-10-19 2010-05-11 Hitachi Global Storage Technologies Netherlands B.V. Servo patterns for patterned media
JP2008282512A (ja) * 2007-05-14 2008-11-20 Toshiba Corp 磁気記録媒体及び磁気記録再生装置
KR100900200B1 (ko) * 2007-06-13 2009-06-02 삼성전자주식회사 자기기록매체, 자기기록매체에 서보 패턴을 기록하는 방법,및 이에 적합한 자기헤드
JP4703608B2 (ja) * 2007-06-28 2011-06-15 株式会社東芝 ディスクリートトラック媒体の製造方法
US7848040B2 (en) * 2007-08-17 2010-12-07 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk and disk drive with amplitude-type servo fields having patterned alternating-polarity servo islands for read/write head positioning
JP4382843B2 (ja) * 2007-09-26 2009-12-16 株式会社東芝 磁気記録媒体およびその製造方法
JP4331236B2 (ja) 2007-12-27 2009-09-16 株式会社東芝 ディスク記憶装置
JP2021044030A (ja) * 2019-09-06 2021-03-18 株式会社東芝 磁気ディスク装置、及びサーボリード処理方法

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62232720A (ja) 1986-04-02 1987-10-13 Nec Corp 磁気記録媒体及びその製造方法
US4912585A (en) 1988-04-28 1990-03-27 International Business Machines Corporation Discrete track thin film magnetic recording disk with embedded servo information
JPH0997419A (ja) * 1995-07-24 1997-04-08 Toshiba Corp 磁気ディスク、磁気ディスクの製造方法、及び磁気記録装置
US5943180A (en) 1995-12-26 1999-08-24 Mitsubishi Chemical Company Information recording medium and recording/reproducing method for utilizing the same
JPH08241512A (ja) 1996-02-19 1996-09-17 Hitachi Ltd 磁気記録媒体
US5858474A (en) 1996-02-20 1999-01-12 Seagate Technology, Inc. Method of forming a magnetic media
US5771131A (en) 1996-07-18 1998-06-23 Quantum Corporation Tracking in hard disk drive using magnetoresistive heads
US6051299A (en) * 1996-12-02 2000-04-18 Sony Corporation Magnetic recording medium, magnetic recording/reproducing apparatus and method for manufacturing metallic mold for molding disc
JPH10222943A (ja) * 1997-02-05 1998-08-21 Hitachi Maxell Ltd 情報記録ディスク及びディスク駆動装置
JPH10334460A (ja) 1997-05-29 1998-12-18 Hitachi Ltd 記録媒体および記録装置
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
US6426845B1 (en) * 1998-05-21 2002-07-30 Seagate Technology Llc Asynchronous analog demodulator and method for a null-type servo pattern
US6602620B1 (en) 1998-12-28 2003-08-05 Kabushiki Kaisha Toshiba Magnetic recording apparatus, magnetic recording medium and manufacturing method thereof
US6751035B1 (en) * 1999-06-08 2004-06-15 Seagate Technology Llc Method and system for initializing patterned media
US6643082B1 (en) * 1999-06-08 2003-11-04 Seagate Technology Llc Servo sector format for a patterned media
JP4644356B2 (ja) * 2000-11-10 2011-03-02 株式会社日立グローバルストレージテクノロジーズ 磁気ディスク装置及び、磁気記録再生装置のサーボライト方式
US6641935B1 (en) 2000-11-20 2003-11-04 Seagate Technology Llc Perpendicular recording media with soft magnetic superlattice underlayer
US6753043B1 (en) 2000-12-07 2004-06-22 Seagate Technology Llc Patterning of high coercivity magnetic media by ion implantation
US6777113B2 (en) 2001-08-14 2004-08-17 Seagate Technology Llc Multilayer films for optimized soft underlayer magnetic properties of dual layer perpendicular recording media
CN1669079A (zh) * 2002-07-23 2005-09-14 皇家飞利浦电子股份有限公司 光学扫描设备
US7175925B2 (en) 2003-06-03 2007-02-13 Seagate Technology Llc Perpendicular magnetic recording media with improved crystallographic orientations and method of manufacturing same
JP4218886B2 (ja) * 2003-12-01 2009-02-04 Ｔｄｋ株式会社 磁気記録媒体
JP4074262B2 (ja) * 2004-03-31 2008-04-09 株式会社東芝 磁気記録媒体およびその製造方法ならびに磁気記録再生装置
US7136252B2 (en) * 2004-07-14 2006-11-14 Tdk Corporation Magnetic recording and reproducing apparatus with recording layer having predetermined convex-concave pattern
JP2006031847A (ja) * 2004-07-16 2006-02-02 Toshiba Corp 磁気ディスク媒体及び磁気ディスク装置
US7292402B2 (en) * 2005-03-25 2007-11-06 Matsushita Electric Industrial Co., Ltd. Systems and methods for multipass servowriting with a null burst pattern

Also Published As

Publication number Publication date
CN1746983A (zh) 2006-03-15
CN100411018C (zh) 2008-08-13
JP4358067B2 (ja) 2009-11-04
JP2006048861A (ja) 2006-02-16
US20060028750A1 (en) 2006-02-09
US7345838B2 (en) 2008-03-18

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