DE3674713D1 - Abgeschirmte schreib-lesekopfstruktur fuer doppelspurige aufzeichnung. - Google Patents

Abgeschirmte schreib-lesekopfstruktur fuer doppelspurige aufzeichnung.

Info

Publication number
DE3674713D1
DE3674713D1 DE8686110051T DE3674713T DE3674713D1 DE 3674713 D1 DE3674713 D1 DE 3674713D1 DE 8686110051 T DE8686110051 T DE 8686110051T DE 3674713 T DE3674713 T DE 3674713T DE 3674713 D1 DE3674713 D1 DE 3674713D1
Authority
DE
Germany
Prior art keywords
double
read head
head structure
track recording
shielded
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
DE8686110051T
Other languages
English (en)
Inventor
Albert Watson Vinal
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE3674713D1 publication Critical patent/DE3674713D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B5/33—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
    • G11B5/3903—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 using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3916—Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide
    • G11B5/3919—Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide the guide being interposed in the flux path
    • G11B5/3922—Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide the guide being interposed in the flux path the read-out elements being disposed in magnetic shunt relative to at least two parts of the flux guide structure
    • 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
    • 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
    • G11B5/127—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
    • G11B5/3903—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 using magnetic thin film layers or their effects, the films being part of integrated structures
    • 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
    • G11B5/3903—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 using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3945—Heads comprising more than one sensitive element
    • G11B5/3948—Heads comprising more than one sensitive element the sensitive elements being active read-out elements
    • G11B5/3958—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged in a single plane, e.g. "matrix" disposition
    • G11B5/3961—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged in a single plane, e.g. "matrix" disposition disposed at an angle to the direction of the track or relative movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Magnetic Heads (AREA)
DE8686110051T 1985-10-02 1986-07-22 Abgeschirmte schreib-lesekopfstruktur fuer doppelspurige aufzeichnung. Expired - Fee Related DE3674713D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/782,661 US4698711A (en) 1985-10-02 1985-10-02 Simplified, shielded twin-track read/write head structure

Publications (1)

Publication Number Publication Date
DE3674713D1 true DE3674713D1 (de) 1990-11-08

Family

ID=25126776

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686110051T Expired - Fee Related DE3674713D1 (de) 1985-10-02 1986-07-22 Abgeschirmte schreib-lesekopfstruktur fuer doppelspurige aufzeichnung.

Country Status (4)

Country Link
US (1) US4698711A (de)
EP (1) EP0220385B1 (de)
JP (1) JPS6286519A (de)
DE (1) DE3674713D1 (de)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4799115A (en) * 1986-10-27 1989-01-17 International Business Machines Corp. Method and apparatus for tolerating track misregistration systems in twin track vertical recording systems
JPS63202979A (ja) * 1987-02-18 1988-08-22 Alps Electric Co Ltd エンコ−ダ用磁気センサ
US5081554A (en) * 1987-04-01 1992-01-14 Digital Equipment Corporation Biasing conductor for MR head
US4885649A (en) * 1987-04-01 1989-12-05 Digital Equipment Corporation Thin film head having a magneto-restrictive read element
US5159511A (en) * 1987-04-01 1992-10-27 Digital Equipment Corporation Biasing conductor for MR head
US5111352A (en) * 1987-07-29 1992-05-05 Digital Equipment Corporation Three-pole magnetic head with reduced flux leakage
US4860138A (en) * 1987-11-12 1989-08-22 International Business Machines Corp. Differentially sensitive single track read/write head design with improved biasing
US4881143A (en) * 1988-01-19 1989-11-14 Hewlett-Packard Company Compensated magneto-resistive read head
DE3806808A1 (de) * 1988-03-03 1989-09-14 Standard Elektrik Lorenz Ag Vorrichtung zur feststellung von magnetisierten bereichen
US5075956A (en) * 1988-03-16 1991-12-31 Digital Equipment Corporation Method of making recording heads with side shields
CA1334447C (en) * 1988-08-03 1995-02-14 Digital Equipment Corporation Perpendicular anisotropy in thin film devices
US5085935A (en) * 1988-08-03 1992-02-04 Digital Equipment Corporation Flux spreading thin film magnetic devices
US5089334A (en) * 1988-08-03 1992-02-18 Digital Equipment Corporation Flux spreading thin film magnetic devices
US5195005A (en) * 1989-06-02 1993-03-16 Digital Equipment Corporation Tranducer with improved inductive coupling
US5311386A (en) * 1989-06-02 1994-05-10 Digital Equipment Corporation Transducer with improved inductive coupling
US5184267A (en) * 1989-06-02 1993-02-02 Digital Equipment Corporation Transducer with improved inductive coupling
US5428893A (en) * 1989-06-02 1995-07-04 Quantum Corporation Method of making a transducer with improved inductive coupling
FR2657189B1 (fr) * 1990-01-18 1993-12-31 Commissariat A Energie Atomique Tete magnetique de lecture et d'ecriture a element magnetoresistant.
EP0714071B1 (de) * 1990-01-31 1998-07-08 Nec Corporation Strichkodeleser
US5083112A (en) * 1990-06-01 1992-01-21 Minnesota Mining And Manufacturing Company Multi-layer thin-film eas marker
US5164869A (en) * 1991-02-27 1992-11-17 International Business Machines Corporation Magnetic recording head with integrated magnetoresistive element and open yoke
JP2662334B2 (ja) * 1992-01-28 1997-10-08 ティーディーケイ株式会社 薄膜磁気ヘッド
US5331496A (en) * 1992-02-14 1994-07-19 Digital Equipment Corporation Thin-film magnetic transducer with a multitude of magnetic flux interactions
EP0651374A3 (de) * 1993-11-01 1995-09-06 Hewlett Packard Co Planarer magnetoresistiver Kopf.
EP0702357B1 (de) * 1994-09-16 2003-06-18 Kabushiki Kaisha Toshiba Magnetowiderstandeffektkopf und Magnetaufzeichnungs-/Wiedergabekopf daraus
US6195232B1 (en) * 1995-08-24 2001-02-27 Torohead, Inc. Low-noise toroidal thin film head with solenoidal coil
US5790341A (en) * 1995-09-20 1998-08-04 International Business Machines Corporation Method and apparatus for reducing servo interference in a magneto-resistive head using skew between head and servo pattern
EP0780833A3 (de) * 1995-12-20 1999-01-07 Ampex Corporation Verbessertes Magnetaufzeichnungssystem mit sättigbarer Schichte und gebrauchmachend von MR-Elementen
US5923502A (en) * 1995-12-21 1999-07-13 International Business Machines Corporation Magneto-resistive head including a selectively placed low-reluctance path between shields
US5830590A (en) * 1996-06-28 1998-11-03 Ampex Corporation Magnetic storage and reproducing system with a low permeability keeper and a self-biased magnetoresistive reproduce head
US5861220A (en) * 1996-08-06 1999-01-19 Ampex Corporation Method and apparatus for providing a magnetic storage and reproducing media with a keeper layer having a longitudinal anisotropy
US6256171B1 (en) 1996-09-30 2001-07-03 Kabushiki Kaisha Toshiba Thin film magnetic head having an improved heat dispersion and magnetic recording apparatus using the same
US5843565A (en) * 1996-10-31 1998-12-01 Ampex Corporation Particulate magnetic medium utilizing keeper technology and methods of manufacture
JPH10255234A (ja) 1997-03-17 1998-09-25 Toshiba Corp 磁気ヘッド
US6122149A (en) * 1997-06-24 2000-09-19 Seagate Technology, Inc. Magnetic microactuator and inductive sensor having shaped pole configuration
JP4008654B2 (ja) * 2000-11-29 2007-11-14 新科實業有限公司 薄膜磁気ヘッドおよびその製造方法
US6930862B2 (en) * 2002-01-07 2005-08-16 Hitachi Global Storage Technologies Netherlands B.V. Shielded extraordinary magnetoresistance head
JP2006164356A (ja) * 2004-12-03 2006-06-22 Hitachi Global Storage Technologies Netherlands Bv 磁気ヘッド及び磁気記録再生装置
US8385018B2 (en) 2009-11-03 2013-02-26 International Business Machines Corporation Magnetic writer having multiple gaps with more uniform magnetic fields across the gaps
US20130188281A1 (en) * 2012-01-25 2013-07-25 Seagate Technology Llc Devices including shaped write coils
US9165575B2 (en) * 2014-02-28 2015-10-20 HGST Netherlands B.V. Side shield reader with a shield exciting coil
US10534578B1 (en) 2018-08-27 2020-01-14 Google Llc Multi-input floating-point adder

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5179323A (ja) * 1974-12-30 1976-07-10 Fujitsu Ltd Jikihetsudosochi
NL7508533A (nl) * 1975-07-17 1977-01-19 Philips Nv Dunne film magneetkop voor het lezen en schrijven van informatie.
FR2455330A1 (fr) * 1979-04-25 1980-11-21 Cii Honeywell Bull Dispositif magnetique de transduction a magnetoresistances
DE3014459A1 (de) * 1980-04-15 1981-10-22 Siemens AG, 1000 Berlin und 8000 München Abgeschirmter magnetoresistiver sensor zum abtasten von informationsspuren eines magnetischen aufzeichungstraegers
FR2493015A1 (fr) * 1980-10-29 1982-04-30 Cii Honeywell Bull Transducteur magnetoresistant
JPS581802A (ja) * 1981-06-27 1983-01-07 Victor Co Of Japan Ltd 磁気記録再生方式及び磁気ヘツド
JPS58122611A (ja) * 1982-01-16 1983-07-21 Victor Co Of Japan Ltd 磁気記録再生素子の製作法
US4484238A (en) * 1982-06-15 1984-11-20 International Business Machines Corporation Dual track magnetic recording method
US4485419A (en) * 1982-06-15 1984-11-27 International Business Machines Corporation Complementary pole coupling magnetic head structure
US4599668A (en) * 1983-06-15 1986-07-08 Eastman Kodak Company Inductively-coupled, thin-film M-R head
US4626946A (en) * 1984-02-28 1986-12-02 International Business Machines Corporation Twin track vertical read-write head structure

Also Published As

Publication number Publication date
US4698711A (en) 1987-10-06
EP0220385B1 (de) 1990-10-03
JPS6286519A (ja) 1987-04-21
EP0220385A1 (de) 1987-05-06

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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