DE69226562D1 - Kombinierter Lese-/Schreibe-Magnetkopf - Google Patents

Kombinierter Lese-/Schreibe-Magnetkopf

Info

Publication number
DE69226562D1
DE69226562D1 DE69226562T DE69226562T DE69226562D1 DE 69226562 D1 DE69226562 D1 DE 69226562D1 DE 69226562 T DE69226562 T DE 69226562T DE 69226562 T DE69226562 T DE 69226562T DE 69226562 D1 DE69226562 D1 DE 69226562D1
Authority
DE
Germany
Prior art keywords
head
write
flux guide
read
magnetic 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 - Fee Related
Application number
DE69226562T
Other languages
English (en)
Other versions
DE69226562T2 (de
Inventor
Terry Mitchell
William Wood
Paul F Michalek
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.)
Onstream Inc Longmont Col Us
Original Assignee
Koninklijke Philips Electronics NV
Philips Electronics NV
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 Koninklijke Philips Electronics NV, Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of DE69226562D1 publication Critical patent/DE69226562D1/de
Application granted granted Critical
Publication of DE69226562T2 publication Critical patent/DE69226562T2/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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using 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
    • G11B5/3906—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
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/3113—Details for improving the magnetic domain structure or avoiding the formation or displacement of undesirable magnetic domains
    • 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
    • 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
    • G11B5/3967—Composite structural arrangements of transducers, e.g. inductive write and magnetoresistive read

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
DE69226562T 1991-05-21 1992-05-12 Kombinierter Lese-/Schreibe-Magnetkopf Expired - Fee Related DE69226562T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70353991A 1991-05-21 1991-05-21

Publications (2)

Publication Number Publication Date
DE69226562D1 true DE69226562D1 (de) 1998-09-17
DE69226562T2 DE69226562T2 (de) 1999-03-11

Family

ID=24825785

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69226562T Expired - Fee Related DE69226562T2 (de) 1991-05-21 1992-05-12 Kombinierter Lese-/Schreibe-Magnetkopf

Country Status (9)

Country Link
US (1) US5905610A (de)
EP (1) EP0514976B1 (de)
JP (1) JPH05151536A (de)
KR (1) KR100280300B1 (de)
AT (1) ATE169763T1 (de)
DE (1) DE69226562T2 (de)
ES (1) ES2121813T3 (de)
MY (1) MY107733A (de)
TW (1) TW214009B (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269895A (en) * 1991-05-21 1993-12-14 North American Philips Corporation Method of making composite structure with single domain magnetic element
JPH04351706A (ja) * 1991-05-30 1992-12-07 Matsushita Electric Ind Co Ltd 複合型薄膜磁気ヘッド
US5241439A (en) * 1991-07-02 1993-08-31 U.S. Philips Corporation Combined read/write thin film magnetic head with two pairs of flux guides
US6078479A (en) * 1993-08-10 2000-06-20 Read-Rite Corporation Magnetic tape head with flux sensing element
US6301076B1 (en) * 1998-03-20 2001-10-09 Seagate Technology Llc Narrow track inductive write head having a two-piece pole
US6223420B1 (en) * 1998-12-04 2001-05-01 International Business Machines Corporation Method of making a read head with high resistance soft magnetic flux guide layer for enhancing read sensor efficiency
US6275362B1 (en) * 1999-07-30 2001-08-14 International Business Machines Corporation Magnetic read head having spin valve sensor with improved seed layer for a free layer

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921217A (en) * 1971-12-27 1975-11-18 Ibm Three-legged magnetic recording head using a magnetorestive element
US4150408A (en) * 1975-07-17 1979-04-17 U.S. Philips Corporation Thin-film magnetic head for reading and writing information
US4130847A (en) * 1977-03-31 1978-12-19 International Business Machines Corporation Corrosion resistant thin film head assembly and method for making
US4504880A (en) * 1982-08-09 1985-03-12 International Business Machines Corporation Integrated magnetic recording head assembly including an inductive write subassembly and a magnetoresistive read subassembly
JPS6069806A (ja) * 1983-09-26 1985-04-20 Sharp Corp 薄膜磁気ヘッド
JPS61120318A (ja) * 1984-11-15 1986-06-07 Matsushita Electric Ind Co Ltd 一体化薄膜磁気ヘツド
JPS61177616A (ja) * 1985-01-30 1986-08-09 Sharp Corp 薄膜磁気ヘツド
DE3613619A1 (de) * 1985-04-26 1986-10-30 Sharp K.K., Osaka Duennfilm-magnetkopf
JPS6337811A (ja) * 1986-07-30 1988-02-18 Toshiba Corp ヨ−クタイプ磁気抵抗効果型薄膜磁気ヘツド
EP0269129B1 (de) * 1986-11-28 1993-09-22 Nec Corporation Dünnfilmmagnetkopf
JP2510541B2 (ja) * 1986-12-01 1996-06-26 株式会社日立製作所 磁気デイスク用磁気抵抗効果型磁気ヘツド
US4891725A (en) * 1987-02-17 1990-01-02 Magnetic Peripherals Inc. Magnetoresistive sensor having antiferromagnetic exchange-biased ends
US4803580A (en) * 1987-02-17 1989-02-07 Magnetic Peripherals Inc. Double-gap magnetoresistive head having an elongated central write/shield pole completely shielding the magnetoresistive sensor strip in the read gap
US4907113A (en) * 1987-07-29 1990-03-06 Digital Equipment Corporation Three-pole magnetic recording head
US4860138A (en) * 1987-11-12 1989-08-22 International Business Machines Corp. Differentially sensitive single track read/write head design with improved biasing
JP2761223B2 (ja) * 1988-09-30 1998-06-04 株式会社日立製作所 記録再生複合ヘッド及びその製造方法
JPH02257412A (ja) * 1988-12-02 1990-10-18 Hitachi Ltd 磁気記録再生装置およびこれに用いる磁気ヘッド
JPH0383213A (ja) * 1989-08-24 1991-04-09 Matsushita Electric Ind Co Ltd 薄膜磁気ヘッド
NL8902569A (nl) * 1989-10-17 1991-05-16 Philips Nv Dunnefilm magneetkop.
US5084794A (en) * 1990-03-29 1992-01-28 Eastman Kodak Company Shorted dual element magnetoresistive reproduce head exhibiting high density signal amplification

Also Published As

Publication number Publication date
EP0514976A3 (en) 1993-03-17
MY107733A (en) 1996-05-30
KR100280300B1 (ko) 2001-03-02
US5905610A (en) 1999-05-18
EP0514976B1 (de) 1998-08-12
TW214009B (de) 1993-10-01
KR920022206A (ko) 1992-12-19
JPH05151536A (ja) 1993-06-18
DE69226562T2 (de) 1999-03-11
EP0514976A2 (de) 1992-11-25
ATE169763T1 (de) 1998-08-15
ES2121813T3 (es) 1998-12-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: ONSTREAM, INC., LONGMONT, COL., US

8328 Change in the person/name/address of the agent

Free format text: HOFFMANN * EITLE, 81925 MUENCHEN

8339 Ceased/non-payment of the annual fee