DE68909477D1 - Buegelfoermiger duennfilmmagnetkopf. - Google Patents

Buegelfoermiger duennfilmmagnetkopf.

Info

Publication number
DE68909477D1
DE68909477D1 DE89303893T DE68909477T DE68909477D1 DE 68909477 D1 DE68909477 D1 DE 68909477D1 DE 89303893 T DE89303893 T DE 89303893T DE 68909477 T DE68909477 T DE 68909477T DE 68909477 D1 DE68909477 D1 DE 68909477D1
Authority
DE
Germany
Prior art keywords
sheet film
film magnet
magnet head
ironed
ironed sheet
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 - Lifetime
Application number
DE89303893T
Other languages
English (en)
Other versions
DE68909477T2 (de
Inventor
Kengo Shiiba
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE68909477D1 publication Critical patent/DE68909477D1/de
Publication of DE68909477T2 publication Critical patent/DE68909477T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B5/3925—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 the two parts being thin films
    • 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
    • G11B5/399—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 with intrinsic biasing, e.g. provided by equipotential strips
    • 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
    • G11B5/3929—Disposition of magnetic thin films not used for directly coupling magnetic flux from the track to the MR film or for shielding
    • G11B5/3932—Magnetic biasing films

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
DE89303893T 1988-04-20 1989-04-19 Bügelförmiger Dünnfilmmagnetkopf. Expired - Lifetime DE68909477T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63097484A JP2790811B2 (ja) 1988-04-20 1988-04-20 薄膜磁気ヘッド

Publications (2)

Publication Number Publication Date
DE68909477D1 true DE68909477D1 (de) 1993-11-04
DE68909477T2 DE68909477T2 (de) 1994-04-28

Family

ID=14193547

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89303893T Expired - Lifetime DE68909477T2 (de) 1988-04-20 1989-04-19 Bügelförmiger Dünnfilmmagnetkopf.

Country Status (4)

Country Link
US (1) US5021909A (de)
EP (1) EP0338811B1 (de)
JP (1) JP2790811B2 (de)
DE (1) DE68909477T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5287239A (en) * 1989-07-05 1994-02-15 Kabushiki Kaisha Toshiba Magnetic head using high saturated magnetic flux density film and manufacturing method thereof
US5233492A (en) * 1989-11-14 1993-08-03 Hitachi Metals, Ltd. Flying type composite magnetic head having Mn-Zn ferrite core
JP2857286B2 (ja) * 1991-09-27 1999-02-17 シャープ株式会社 磁気抵抗効果型薄膜磁気ヘッド
JP3022023B2 (ja) 1992-04-13 2000-03-15 株式会社日立製作所 磁気記録再生装置
US5260653A (en) * 1992-06-03 1993-11-09 Eastman Kodak Company Thin film very high sensitivity magnetoresistive magnetometer having temperature compensation and simple domain stability
US5325253A (en) * 1993-02-17 1994-06-28 International Business Machines Corporation Stabilization of magnetoresistive transducer using canted exchange bias
US5552589A (en) * 1993-08-31 1996-09-03 Eastman Kodak Company Permanent magnet assembly with MR element for detection/authentication of magnetic documents
US5428491A (en) * 1993-12-03 1995-06-27 Eastman Kodak Company Magnetoresistive head with deposited biasing magnet
EP0725936A1 (de) * 1994-08-28 1996-08-14 Koninklijke Philips Electronics N.V. Magnetfelddetektor
JPH09260742A (ja) * 1996-03-26 1997-10-03 Sony Corp 磁気抵抗効果素子
US6005753A (en) * 1998-05-29 1999-12-21 International Business Machines Corporation Magnetic tunnel junction magnetoresistive read head with longitudinal and transverse bias
JP2000149201A (ja) 1998-11-09 2000-05-30 Hitachi Ltd 磁気記憶再生装置
US6447935B1 (en) 1999-11-23 2002-09-10 Read-Rite Corporation Method and system for reducing assymetry in a spin valve having a synthetic pinned layer
JP4202958B2 (ja) * 2004-03-30 2008-12-24 株式会社東芝 磁気抵抗効果素子
US8146756B2 (en) * 2007-04-18 2012-04-03 Jonathan Manufacturing Corporation Universal toolless rack mount bracket

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58192392A (ja) * 1982-05-07 1983-11-09 Hitachi Ltd 磁気抵抗効果型薄膜素子
JPS59231728A (ja) * 1983-06-13 1984-12-26 Matsushita Electric Ind Co Ltd 薄膜磁気ヘツド
JPS59112422A (ja) * 1982-12-16 1984-06-28 Sony Corp 磁気抵抗効果型磁気ヘツド
JPS62132211A (ja) * 1985-12-03 1987-06-15 Sharp Corp 薄膜磁気ヘツド
DE3644388A1 (de) * 1985-12-27 1987-07-02 Sharp Kk Duennfilm-joch-magnetkopf
JP2559109B2 (ja) * 1986-10-09 1996-12-04 シャープ株式会社 ヨ−ク型薄膜磁気ヘッド

Also Published As

Publication number Publication date
EP0338811A2 (de) 1989-10-25
EP0338811B1 (de) 1993-09-29
DE68909477T2 (de) 1994-04-28
EP0338811A3 (en) 1990-01-31
JPH01269218A (ja) 1989-10-26
US5021909A (en) 1991-06-04
JP2790811B2 (ja) 1998-08-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN