JPS56115726U - - Google Patents

Info

Publication number
JPS56115726U
JPS56115726U JP1981007520U JP752081U JPS56115726U JP S56115726 U JPS56115726 U JP S56115726U JP 1981007520 U JP1981007520 U JP 1981007520U JP 752081 U JP752081 U JP 752081U JP S56115726 U JPS56115726 U JP S56115726U
Authority
JP
Japan
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.)
Pending
Application number
JP1981007520U
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 filed Critical
Publication of JPS56115726U publication Critical patent/JPS56115726U/ja
Pending 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • G11B15/125—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams conditioned by the operating function of the apparatus
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
JP1981007520U 1980-01-24 1981-01-23 Pending JPS56115726U (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/114,915 US4317148A (en) 1980-01-24 1980-01-24 Transducer for perpendicular magnetic recording

Publications (1)

Publication Number Publication Date
JPS56115726U true JPS56115726U (ja) 1981-09-04

Family

ID=22358207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1981007520U Pending JPS56115726U (ja) 1980-01-24 1981-01-23

Country Status (3)

Country Link
US (1) US4317148A (ja)
EP (1) EP0033236A3 (ja)
JP (1) JPS56115726U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005310363A (ja) * 2004-04-21 2005-11-04 Headway Technologies Inc 垂直記録ヘッドのフリンジ磁界の減少方法、シールド、ならびに垂直記録ヘッド

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56165918A (en) * 1980-05-23 1981-12-19 Ricoh Co Ltd Vertical magnetic recorder and reproducer
US4443826A (en) * 1980-10-29 1984-04-17 Canon Kabushiki Kaisha Magneto-resistive effect type magnetic head
DE3213928A1 (de) * 1981-04-15 1982-11-18 Canon Denshi K.K., Chichibu, Saitama Senkrecht - magnetkopf
US4423450A (en) * 1981-05-06 1983-12-27 Censtor Corporation Magnetic head and multitrack transducer for perpendicular recording and method for fabricating
US4423451A (en) * 1981-08-10 1983-12-27 Sperry Corporation Thin film magnetic head having disparate poles for pulse asymmetry compensation
EP0091812B1 (en) * 1982-04-14 1987-11-19 Matsushita Electric Industrial Co., Ltd. A playback head for perpendicular magnetic recordings
JPS5914101A (ja) * 1982-07-14 1984-01-25 Hitachi Ltd 磁気記録再生方式
JPS59101004A (ja) * 1982-11-29 1984-06-11 Olympus Optical Co Ltd 録画再生装置
FR2549271B1 (fr) * 1983-07-13 1989-05-26 Cii Honeywell Bull Transducteur magnetique hautement integre d'ecriture d'informations sur un support magnetique
KR890003043B1 (ko) * 1983-07-16 1989-08-19 알프스덴기 가부시기 가이샤 자기헤드
DE3330075A1 (de) * 1983-08-19 1985-02-28 Siemens AG, 1000 Berlin und 8000 München Schreib-/lese-magnetkopf fuer ein senkrecht zu magnetisierendes aufzeichnungsmedium
DE3346876A1 (de) * 1983-12-23 1985-07-11 Siemens AG, 1000 Berlin und 8000 München Kombinierter schreib- und lese-magnetkopf zur senkrechten magnetisierung eines entsprechenden aufzeichnungsmediums
JPS60163213A (ja) * 1984-02-01 1985-08-26 Olympus Optical Co Ltd 垂直磁化型磁気ヘツド装置
JPS60177418A (ja) * 1984-02-23 1985-09-11 Victor Co Of Japan Ltd 垂直磁気記録再生用薄膜ヘツド及びその製造方法
JPS60224110A (ja) * 1984-04-20 1985-11-08 Alps Electric Co Ltd 磁気記録用装置
DE3420746A1 (de) * 1984-06-04 1985-12-05 Siemens AG, 1000 Berlin und 8000 München Schichtweise aufgebauter magnetkopf fuer ein senkrecht zu magnetisierendes aufzeichnungsmedium
US4750071A (en) * 1985-08-28 1988-06-07 Canon Denshi Kabushiki Kaisha Magnetic head assembly including a pair of heads disposed in the vicinity of each other
US4748525A (en) * 1986-02-14 1988-05-31 Magnetic Peripherals Inc. Probe head for vertical recording
GB2195198A (en) * 1986-09-17 1988-03-30 Racal Recorders Ltd Erasing head
US5159511A (en) * 1987-04-01 1992-10-27 Digital Equipment Corporation Biasing conductor for MR head
US5081554A (en) * 1987-04-01 1992-01-14 Digital Equipment Corporation Biasing conductor for MR head
US5750270A (en) * 1995-02-07 1998-05-12 Conner Peripherals, Inc. Multi-layer magnetic recording media
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
US6816339B1 (en) * 2000-01-10 2004-11-09 Seagate Technology Llc Perpendicular magnetic recording head with longitudinal magnetic field generator to facilitate magnetization switching
US6646827B1 (en) * 2000-01-10 2003-11-11 Seagate Technology Llc Perpendicular magnetic recording head with write pole which reduces flux antenna effect
US6798615B1 (en) 2000-03-24 2004-09-28 Seagate Technology Llc Perpendicular recording head with return poles which reduce flux antenna effect
US6842313B1 (en) 2002-04-08 2005-01-11 Maxtor Corporation Floating down stream perpendicular write head shield
US6965494B2 (en) * 2002-05-13 2005-11-15 Robert Owen Campbell Magnetic recording head having a first pole for generating an easy axis field and an auxiliary pole for generating a first auxiliary hard axis field that opposes an initial hard axis field
US7099121B2 (en) * 2002-06-06 2006-08-29 Seagate Technology Llc Perpendicular magnetic recording head having a reduced field under the return pole and minimal eddy current losses
US7149045B1 (en) 2002-11-07 2006-12-12 Maxtor Corporation Longitudinal media with soft underlayer and perpendicular write head
US7729092B1 (en) 2002-11-07 2010-06-01 Seagate Technology Llc Shielded pole writer under reader
US7075756B1 (en) 2002-11-07 2006-07-11 Maxtor Corporation Shielded pole writer
US8643979B2 (en) * 2003-05-23 2014-02-04 The Regents Of The University Of California Tapered single pole magnetic heads for perpendicular magnetic recording
US7002775B2 (en) * 2003-09-30 2006-02-21 Hitachi Global Storage Technologies Netherlands B.V. Head for perpendicular magnetic recording with a shield structure connected to the return pole piece
US7289295B2 (en) * 2004-05-12 2007-10-30 Headway Technologies, Inc. Return pole field reduction for perpendicular write head
JP4113879B2 (ja) * 2005-02-04 2008-07-09 Ｔｄｋ株式会社 垂直磁気記録ヘッドおよび磁気記録装置
US7639450B2 (en) * 2005-04-27 2009-12-29 Hitachi Global Storage Technologies Netherlands B.V. Flux shunt structure for reducing return pole corner fields in a perpendicular magnetic recording head
US7522380B2 (en) * 2005-06-14 2009-04-21 Seagate Technology Llc Head to disc interface tunneling giant magnetoresistive sensor
US7538976B2 (en) * 2006-04-25 2009-05-26 Hitachi Global Storage Technologies B.V. Trailing shield design for reducing wide area track erasure (water) in a perpendicular recording system
US20090021861A1 (en) * 2007-07-16 2009-01-22 Seagate Technology Llc Magnetic write device including an encapsulated wire for assisted writing
JP2010146667A (ja) * 2008-12-19 2010-07-01 Toshiba Corp 磁気ディスク装置
US8638527B2 (en) * 2009-10-16 2014-01-28 Hitachi Global Storage Technologies Netherlands B.V. Signaling method and apparatus for write assist of high coercivity media using integrated half coil
US8411390B2 (en) * 2009-10-16 2013-04-02 Hitachi Global Storage Technologies Netherlands B.V. Integrated half coil structure for write assist of high coercivity media
US8693127B2 (en) * 2011-01-27 2014-04-08 International Business Machines Corporation Writing timing-based servo patterns in perpendicular and non-oriented magnetic media
US8908328B2 (en) * 2012-10-04 2014-12-09 Tdk Corporation Perpendicular magnetic write head and magnetic recording device having additional magnetic layer contacting front yoke and shield

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5293308A (en) * 1976-01-31 1977-08-05 Teac Corp Magnetic head
JPS5434219A (en) * 1977-08-22 1979-03-13 Canon Inc Magnetic head
JPS54119220A (en) * 1978-03-08 1979-09-17 Olympus Optical Co Ltd Magnetic head

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB443200A (en) * 1934-05-18 1936-02-17 Giovanni Liguori Method of magnetically recording and reproducing oscillations
US2585932A (en) * 1948-07-29 1952-02-19 Magnetic Equipment Inc Device for reducing noise in magnetic recording systems
US2758905A (en) * 1951-01-29 1956-08-14 Univ California Magnetic recording apparatus
BE513237A (ja) * 1951-08-01
US2840440A (en) * 1953-10-07 1958-06-24 Donald J Mclaughlin Magnetic recording and pickup system
DE1153069B (de) * 1960-02-06 1963-08-22 Grundig Max Anordnung zur Aufzeichnung von beliebigen Signalen mit einem Quermagnetisierungsmagnetkopf
US3313889A (en) * 1961-06-12 1967-04-11 Machinski Edward Magnetic head with thin edge pole pieces
US3371164A (en) * 1962-11-10 1968-02-27 Matsushita Electric Ind Co Ltd Combined magnetic transducing and erase head
US3454727A (en) * 1965-12-06 1969-07-08 Lockheed Aircraft Corp Plural track flux gate transducer head with common excitation means
US3810191A (en) * 1972-10-26 1974-05-07 Honeywell Inc Multi-stylus through field recording head
US4138702A (en) * 1975-01-23 1979-02-06 Compagnie Honeywell Bull Head arrangement for perpendicular recording information on a magnetic record carrier
JPS51137407A (en) * 1975-05-23 1976-11-27 Fujitsu Ltd Magnetic recording head
JPS53121608A (en) * 1977-03-31 1978-10-24 Sony Corp Magnetic recording system
JPS545417A (en) * 1977-06-14 1979-01-16 Tdk Corp Magnetic head
JPS5488110A (en) * 1977-12-26 1979-07-13 Toshiba Corp Vertical magnetization recorder-reproducer
JPS551611A (en) * 1978-06-19 1980-01-08 Hitachi Ltd Megnetic recording and reproducing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5293308A (en) * 1976-01-31 1977-08-05 Teac Corp Magnetic head
JPS5434219A (en) * 1977-08-22 1979-03-13 Canon Inc Magnetic head
JPS54119220A (en) * 1978-03-08 1979-09-17 Olympus Optical Co Ltd Magnetic head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005310363A (ja) * 2004-04-21 2005-11-04 Headway Technologies Inc 垂直記録ヘッドのフリンジ磁界の減少方法、シールド、ならびに垂直記録ヘッド

Also Published As

Publication number Publication date
US4317148A (en) 1982-02-23
EP0033236A2 (en) 1981-08-05
EP0033236A3 (en) 1982-03-10

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