DE3274397D1 - A perpendicular magnetic recording and reproducing head - Google Patents

A perpendicular magnetic recording and reproducing head

Info

Publication number
DE3274397D1
DE3274397D1 DE8282304048T DE3274397T DE3274397D1 DE 3274397 D1 DE3274397 D1 DE 3274397D1 DE 8282304048 T DE8282304048 T DE 8282304048T DE 3274397 T DE3274397 T DE 3274397T DE 3274397 D1 DE3274397 D1 DE 3274397D1
Authority
DE
Germany
Prior art keywords
magnetic recording
perpendicular magnetic
reproducing head
reproducing
head
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
Application number
DE8282304048T
Other languages
English (en)
Inventor
Junzo Toda
Masao Hiyane
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE3274397D1 publication Critical patent/DE3274397D1/de
Expired 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
    • G11B5/127—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
DE8282304048T 1981-07-30 1982-07-30 A perpendicular magnetic recording and reproducing head Expired DE3274397D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56118525A JPS5819717A (ja) 1981-07-30 1981-07-30 垂直磁化記録再生用ヘッド

Publications (1)

Publication Number Publication Date
DE3274397D1 true DE3274397D1 (en) 1987-01-08

Family

ID=14738758

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282304048T Expired DE3274397D1 (en) 1981-07-30 1982-07-30 A perpendicular magnetic recording and reproducing head

Country Status (4)

Country Link
US (1) US4546398A (de)
EP (1) EP0071489B1 (de)
JP (1) JPS5819717A (de)
DE (1) DE3274397D1 (de)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58212615A (ja) * 1982-06-04 1983-12-10 Hitachi Ltd 薄膜磁気ヘツド
JPS5914101A (ja) * 1982-07-14 1984-01-25 Hitachi Ltd 磁気記録再生方式
EP0101352A1 (de) * 1982-07-20 1984-02-22 Vertimag Systems Corporation Schreib/Lesekopf mit einer oder mehreren ebenen Spulen
JPS5971115A (ja) * 1982-10-15 1984-04-21 Hitachi Ltd 磁気ヘッド
NL8301188A (nl) * 1983-04-05 1984-11-01 Philips Nv Magneetkop met een dunne strook magnetoweerstandmateriaal als leeselement.
DE3343933A1 (de) * 1983-12-05 1985-06-13 Siemens AG, 1000 Berlin und 8000 München Magnetkopf mit haupt- und hilfspol fuer ein senkrecht zu magnetisierendes aufzeichnungsmedium
DE3346777A1 (de) * 1983-12-23 1985-07-04 Siemens AG, 1000 Berlin und 8000 München Duennschicht-magnetkopf zur senkrechten (vertikalen) aufzeichnung
DE3346885A1 (de) * 1983-12-23 1985-07-11 Siemens AG, 1000 Berlin und 8000 München Duennschicht-magnetkopf fuer ein senkrecht zu magnetisierendes aufzeichnungsmedium
DE3419650A1 (de) * 1984-05-25 1985-11-28 Siemens AG, 1000 Berlin und 8000 München Duennschicht-magnetkopf zum schreiben und lesen fuer ein senkrecht zu magnetisierendes aufzeichnungs-medium
DE3420746A1 (de) * 1984-06-04 1985-12-05 Siemens AG, 1000 Berlin und 8000 München Schichtweise aufgebauter magnetkopf fuer ein senkrecht zu magnetisierendes aufzeichnungsmedium
DE3527468A1 (de) * 1984-08-01 1986-02-06 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Magnetkopf fuer quermagnetische aufzeichnung und wiedergabe
EP0186032B1 (de) * 1984-12-21 1989-05-24 Siemens Aktiengesellschaft Dünnfilm-Magnetkopf für ein senkrecht zu magnetisierendes Aufzeichnungsmedium
EP0185289B1 (de) * 1984-12-21 1988-07-27 Siemens Aktiengesellschaft Dünnfilm-Magnetkopf auf einem nicht-magnetischen Substrat zur senkrechten Magnetisierung
US4740855A (en) * 1985-10-18 1988-04-26 Siemens Aktiengesellschaft Magnetic thin-film head having a main and an auxiliary pole for vertical magnetization
EP0232505A1 (de) * 1985-12-20 1987-08-19 Siemens Aktiengesellschaft Magnetische Speichereinrichtung mit einem senkrecht zu magnetisierenden Aufzeichnungsmedium
JPH0693289B2 (ja) * 1986-07-22 1994-11-16 アルプス電気株式会社 垂直磁気記録用薄膜磁気ヘツド
US4847161A (en) * 1986-12-19 1989-07-11 Siemens Aktiengesellschaft Magnetically anisotropic recording medium
JPH081687B2 (ja) * 1988-09-27 1996-01-10 富士通株式会社 垂直磁化薄膜ヘッド
US6038106A (en) * 1995-05-10 2000-03-14 International Business Machines Corporation Piggyback magneto-resistive read/write tape head with optimized process for same gap read/write
US6498697B1 (en) * 1999-07-12 2002-12-24 Alexandr M. Klimovitsky Method and system of magnetic recording and reproducing with ultra-high density
US6876519B1 (en) 1999-09-20 2005-04-05 Seagate Technology Llc Magnetic recording head including background magnetic field generator
US6771462B1 (en) 1999-09-20 2004-08-03 Seagate Technology Llc Perpendicular recording head including concave tip
US6898053B1 (en) 1999-10-26 2005-05-24 Seagate Technology Llc Perpendicular recording head with trackwidth defined by plating thickness
US6531202B1 (en) 1999-11-29 2003-03-11 Seagate Technology Llc Perpendicular magnetic recording media with reduced-noise soft magnetic underlayer
US6560069B1 (en) 1999-11-29 2003-05-06 Seagate Technology, Llc Perpendicular recording head defining the trackwidth by material deposition thickness
US6513228B1 (en) * 2000-01-05 2003-02-04 Seagate Technology Llc Method for forming a perpendicular recording read/write head
US6646827B1 (en) 2000-01-10 2003-11-11 Seagate Technology Llc Perpendicular magnetic recording head with write pole which reduces flux antenna effect
US6667848B1 (en) 2000-01-10 2003-12-23 Seagate Technology Llc Perpendicular magnetic recording head with means for suppressing noise from soft magnetic underlayer of recording media
US6574072B1 (en) 2000-01-12 2003-06-03 Seagate Technology Llc Perpendicular magnetic recording head with radial magnetic field generator which reduces noise from soft magnetic underlayer of recording disk
US6660357B1 (en) 2000-02-04 2003-12-09 Seagate Technology Llc Perpendicular magnetic recording media with laminated soft magnetic underlayer
US6693768B1 (en) * 2000-03-15 2004-02-17 Seagate Technology Llc Perpendicular magnetic recording head having a flux focusing main pole
US6798615B1 (en) 2000-03-24 2004-09-28 Seagate Technology Llc Perpendicular recording head with return poles which reduce flux antenna effect
US6717770B1 (en) 2000-03-24 2004-04-06 Seagate Technology Llc Recording head for applying a magnetic field perpendicular to the magnetizations within magnetic storage media
US6703099B2 (en) 2000-07-27 2004-03-09 Seagate Technology Llc Perpendicular magnetic recording media with patterned soft magnetic underlayer
JP3875020B2 (ja) * 2000-12-26 2007-01-31 アルプス電気株式会社 垂直磁気記録ヘッドの製造方法
JP3875019B2 (ja) 2000-12-26 2007-01-31 アルプス電気株式会社 垂直磁気記録ヘッドおよびその製造方法
JP3889222B2 (ja) * 2000-12-26 2007-03-07 アルプス電気株式会社 垂直磁気記録ヘッドの製造方法
JP3593312B2 (ja) * 2000-12-26 2004-11-24 アルプス電気株式会社 垂直磁気記録ヘッドおよびその製造方法
JP4673508B2 (ja) * 2001-06-29 2011-04-20 株式会社日立グローバルストレージテクノロジーズ 磁気ヘッド及び磁気ディスク装置
JP4084008B2 (ja) * 2001-08-03 2008-04-30 株式会社日立グローバルストレージテクノロジーズ 薄膜磁気ヘッド及びその製造方法、並びに磁気ディスク装置
US6943992B2 (en) * 2001-08-30 2005-09-13 Headway Technologies, Inc. Inverted write head for vertical recording
JP2005122831A (ja) * 2003-10-17 2005-05-12 Alps Electric Co Ltd 磁気ヘッド
US7289295B2 (en) * 2004-05-12 2007-10-30 Headway Technologies, Inc. Return pole field reduction for perpendicular write head
US7296339B1 (en) 2004-09-08 2007-11-20 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording head
US7552523B1 (en) 2005-07-01 2009-06-30 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducer
US8333008B1 (en) 2005-07-29 2012-12-18 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducer
US7508627B1 (en) 2006-03-03 2009-03-24 Western Digital (Fremont), Llc Method and system for providing perpendicular magnetic recording transducers
US8141235B1 (en) 2006-06-09 2012-03-27 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducers
US8015692B1 (en) 2007-11-07 2011-09-13 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR) head
US9099118B1 (en) 2009-05-26 2015-08-04 Western Digital (Fremont), Llc Dual damascene process for producing a PMR write pole
US8486285B2 (en) 2009-08-20 2013-07-16 Western Digital (Fremont), Llc Damascene write poles produced via full film plating
US8681590B2 (en) 2010-11-24 2014-03-25 Seagate Technology Llc Apparatus for increasing data rates in a magnetic head
JP2013016245A (ja) * 2011-06-30 2013-01-24 Seagate Technology Llc 磁気ヘッド

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1952402A1 (de) * 1969-10-17 1971-04-22 Philips Patentverwaltung Magnetkopf
US3700827A (en) * 1970-01-31 1972-10-24 Nippon Electric Co Magnetic head including thin magnetic film separated by a gap spacer
JPS52134706A (en) * 1976-05-06 1977-11-11 Univ Tohoku Vertical magnetic recorder reproducer and system therefor
DE2658956A1 (de) * 1976-12-24 1978-06-29 Ibm Deutschland Vertikales magnetisches informationsaufzeichnungssystem
JPS545710A (en) * 1977-06-15 1979-01-17 Fujitsu Ltd Thin-film magnetic head
US4191983A (en) * 1977-06-24 1980-03-04 Applied Magnetics Corporation Thin film magnetic head assembly having a thin film magnetic transducer encapsulated in insulating bonding material
DE2819208C2 (de) * 1978-05-02 1984-10-31 Siemens AG, 1000 Berlin und 8000 München Mehrfach-Dünnschicht-Magnetkopf zur Bandaufzeichnung von Hochfrequenzsignalen
JPS5512522A (en) * 1978-07-10 1980-01-29 Fujitsu Ltd Thin film magnetic head for vertical magnetization recording
JPS5534301A (en) * 1978-08-31 1980-03-10 Fujitsu Ltd Magnetic head device
JPS5584015A (en) * 1978-12-18 1980-06-24 Toshiba Corp Vertical magnetization recorder
US4190872A (en) * 1978-12-21 1980-02-26 International Business Machines Corporation Thin film inductive transducer
US4219854A (en) * 1978-12-21 1980-08-26 International Business Machines Corporation Thin film magnetic head assembly
JPS5619513A (en) * 1979-07-25 1981-02-24 Matsushita Electric Ind Co Ltd Magnetic head for vertical recording
JPS5674811A (en) * 1979-11-20 1981-06-20 Matsushita Electric Ind Co Ltd Magnetic head
JPS6022406B2 (ja) * 1979-12-13 1985-06-01 富士通株式会社 垂直磁気記録再生用ヘッド
US4383284A (en) * 1979-12-14 1983-05-10 Tokyo Shibaura Denki Kabushiki Kaisha Perpendicular magnetic head and method of manufacturing the same
FR2480015A1 (fr) * 1980-04-02 1981-10-09 Cii Honeywell Bull Transducteur magnetique a entrefer de grande dimension variable pour la lecture et l'ecriture des informations contenues dans un support magnetique
US4404609A (en) * 1981-10-30 1983-09-13 International Business Machines Corporation Thin film inductive transducer for perpendicular recording

Also Published As

Publication number Publication date
EP0071489A2 (de) 1983-02-09
JPS5819717A (ja) 1983-02-04
US4546398A (en) 1985-10-08
JPS6118249B2 (de) 1986-05-12
EP0071489B1 (de) 1986-11-20
EP0071489A3 (en) 1983-09-07

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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