DE69228451D1 - Dünnfilmwandler mit verbesserter induktiver Kopplung - Google Patents

Dünnfilmwandler mit verbesserter induktiver Kopplung

Info

Publication number
DE69228451D1
DE69228451D1 DE69228451T DE69228451T DE69228451D1 DE 69228451 D1 DE69228451 D1 DE 69228451D1 DE 69228451 T DE69228451 T DE 69228451T DE 69228451 T DE69228451 T DE 69228451T DE 69228451 D1 DE69228451 D1 DE 69228451D1
Authority
DE
Germany
Prior art keywords
thin film
inductive coupling
improved inductive
film converter
converter
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
DE69228451T
Other languages
English (en)
Other versions
DE69228451T2 (de
Inventor
Michael L Mallary
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.)
Quantum Corp
Original Assignee
Quantum 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 Quantum Corp filed Critical Quantum Corp
Publication of DE69228451D1 publication Critical patent/DE69228451D1/de
Application granted granted Critical
Publication of DE69228451T2 publication Critical patent/DE69228451T2/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
    • 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
    • G11B5/17—Construction or disposition of windings
    • 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
    • G11B5/31—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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • 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
    • G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49034—Treating to affect magnetic properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
    • Y10T29/49032—Fabricating head structure or component thereof
    • Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic
DE69228451T 1991-06-26 1992-06-12 Dünnfilmwandler mit verbesserter induktiver Kopplung Expired - Fee Related DE69228451T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/721,233 US5311386A (en) 1989-06-02 1991-06-26 Transducer with improved inductive coupling

Publications (2)

Publication Number Publication Date
DE69228451D1 true DE69228451D1 (de) 1999-04-01
DE69228451T2 DE69228451T2 (de) 1999-07-22

Family

ID=24897087

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69228451T Expired - Fee Related DE69228451T2 (de) 1991-06-26 1992-06-12 Dünnfilmwandler mit verbesserter induktiver Kopplung

Country Status (5)

Country Link
US (2) US5311386A (de)
EP (1) EP0520656B1 (de)
JP (1) JPH05234036A (de)
DE (1) DE69228451T2 (de)
SG (1) SG47800A1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0568966A2 (de) * 1992-05-04 1993-11-10 Read-Rite Corporation Dünnfilmmagnetköpfe mit Mehrfach-Jochen
US5570251A (en) * 1993-07-07 1996-10-29 Tdk Corporation Thin film magnetic device with plural valves of magnetostriction
US5717552A (en) * 1996-09-10 1998-02-10 Ampex Corporation Magnetic core with field confinement structure
US6441994B1 (en) * 1999-07-15 2002-08-27 Seagate Technology Llc High frequency response writer with recessed shared pole and vertical coils
JP3551099B2 (ja) * 1999-09-28 2004-08-04 日本電気株式会社 磁気テープ装置用薄膜磁気ヘッド
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
US6707642B1 (en) * 2000-02-04 2004-03-16 Seagate Technology Llc Longitudinal magnetic recording head with reduced side fringing
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
US6972932B2 (en) * 2000-09-06 2005-12-06 Seagate Technology Llc High-efficiency single-turn write head for high-speed recording
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
US6671128B2 (en) 2001-03-29 2003-12-30 Seagate Technology Llc Recording head with oppositely directed microstrip waveguide conductors to induce a magnetic write field for longitudinal or perpendicular magnetic recording
CN1248196C (zh) * 2001-08-21 2006-03-29 西加特技术有限责任公司 包括空间激励的自旋波模式写入器的磁记录头
US7248433B1 (en) * 2004-02-02 2007-07-24 Western Digital (Fremont), Inc. Magnetic head with stitched top pole layer and single layer coil or solenoidal coil
US7633711B2 (en) * 2007-02-07 2009-12-15 Hitachi Global Storage Technologies Netherlands B.V. Magnetic write head with helical coil structure using multiple materials
AU2008219354B2 (en) 2007-09-19 2014-02-13 Viavi Solutions Inc. Anisotropic magnetic flakes

Family Cites Families (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549825A (en) * 1967-09-18 1970-12-22 Ncr Co Magnetic transducer with planar spiral coil extending into the gap
US3967368A (en) * 1972-10-11 1976-07-06 International Business Machines Corporation Method for manufacturing and using an internally biased magnetoresistive magnetic transducer
GB1440343A (en) * 1973-04-13 1976-06-23 Data Recording Instr Co Magnetic core and coil assemblies
NL7508533A (nl) * 1975-07-17 1977-01-19 Philips Nv Dunne film magneetkop voor het lezen en schrijven van informatie.
JPS545710A (en) * 1977-06-15 1979-01-17 Fujitsu Ltd Thin-film magnetic head
US4165525A (en) * 1978-02-15 1979-08-21 U.S. Philips Corporation Magnetic head having a core provided on a substrate by means of thin-film technology
JPS5584016A (en) * 1978-12-19 1980-06-24 Sony Corp Magnetic head and its manufacture
US4335410A (en) * 1979-01-15 1982-06-15 Magnex Corporation Thin film magnetic transducer
US4374403A (en) * 1979-06-27 1983-02-15 Matsushita Electric Industrial Co., Ltd. Magnetic recording and reproducing system
JPS57164416A (en) * 1981-03-31 1982-10-09 Fujitsu Ltd Magnetic head
EP0091812B1 (de) * 1982-04-14 1987-11-19 Matsushita Electric Industrial Co., Ltd. Wiedergabekopf für senkrecht magnetisierte Aufzeichnungen
JPS5971112A (ja) * 1982-10-15 1984-04-21 Comput Basic Mach Technol Res Assoc 薄膜磁気ヘツド
US4566050A (en) * 1982-12-30 1986-01-21 International Business Machines Corp. (Ibm) Skew insensitive magnetic read head
US4535375A (en) * 1983-01-14 1985-08-13 Magnetic Peripherals, Inc. Magnetoresistive head
JPH061729B2 (ja) * 1983-01-17 1994-01-05 株式会社日立製作所 磁性体膜およびそれを用いた磁気ヘッド
JPS6059515A (ja) * 1983-09-12 1985-04-05 Seiko Epson Corp 磁気ヘツド
JPS60129915A (ja) * 1983-12-15 1985-07-11 Seikosha Co Ltd 薄膜磁気ヘツド
JPH0622170B2 (ja) * 1983-12-16 1994-03-23 株式会社日立製作所 磁気ヘッド
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
JPH0640371B2 (ja) * 1984-02-20 1994-05-25 富士写真フイルム株式会社 薄膜磁気ヘツドのコイル構造
US4626946A (en) * 1984-02-28 1986-12-02 International Business Machines Corporation Twin track vertical read-write head structure
DE3527468A1 (de) * 1984-08-01 1986-02-06 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Magnetkopf fuer quermagnetische aufzeichnung und wiedergabe
JPS6185612A (ja) * 1984-10-03 1986-05-01 Toko Inc 薄膜磁気ヘツド
US4656546A (en) * 1985-01-22 1987-04-07 Digital Equipment Corporation Vertical magnetic recording arrangement
US4668913A (en) * 1985-03-14 1987-05-26 International Business Machines Corporation Constant flux magneto resistive magnetic reluctance sensing apparatus
US4649447A (en) * 1985-08-15 1987-03-10 International Business Machines Combed MR sensor
US4663685A (en) * 1985-08-15 1987-05-05 International Business Machines Magnetoresistive read transducer having patterned longitudinal bias
US4698711A (en) * 1985-10-02 1987-10-06 International Business Machines Corporation Simplified, shielded twin-track read/write head structure
US4695351A (en) * 1986-07-10 1987-09-22 Digital Equipment Corporation Method for producing magnetic heads
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
US4868698A (en) * 1987-03-05 1989-09-19 Matsushita Electric Industrial Co., Ltd. Magnetic head
US4825318A (en) * 1987-06-05 1989-04-25 Carnegie-Mellon University Compound read/write element for rigid magnetic disk files
EP0314172B1 (de) * 1987-10-29 1994-03-09 Fuji Photo Film Co., Ltd. Film-Magnetkopf
US4816947A (en) * 1987-11-12 1989-03-28 International Business Machines Single track vertical and horizontal recording read/write head design
JPH01166309A (ja) * 1987-12-23 1989-06-30 Hitachi Ltd 薄膜磁気ヘッド
US4912584A (en) * 1988-03-09 1990-03-27 Digital Equipment Corporation Method for fabricating magnetic recording poles
US4931886A (en) * 1988-06-29 1990-06-05 Digital Equipment Corporation Apparatus and methods to suppress perpendicular fields in longitudinal recording
JPH0237513A (ja) * 1988-07-27 1990-02-07 Hitachi Ltd 薄膜磁気ヘッド
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
US5184267A (en) * 1989-06-02 1993-02-02 Digital Equipment Corporation Transducer with improved inductive coupling
EP0400793A3 (de) * 1989-06-02 1991-01-23 Quantum Corporation Wandler mit induktiver Kopplung
US5195005A (en) * 1989-06-02 1993-03-16 Digital Equipment Corporation Tranducer with improved inductive coupling

Also Published As

Publication number Publication date
JPH05234036A (ja) 1993-09-10
EP0520656A3 (en) 1993-09-01
SG47800A1 (en) 1998-04-17
US5311386A (en) 1994-05-10
US5428887A (en) 1995-07-04
EP0520656B1 (de) 1999-02-24
EP0520656A2 (de) 1992-12-30
DE69228451T2 (de) 1999-07-22

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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