DE69128800D1 - Wandler mit verbesserter induktiver Kopplung - Google Patents

Wandler mit verbesserter induktiver Kopplung

Info

Publication number
DE69128800D1
DE69128800D1 DE69128800T DE69128800T DE69128800D1 DE 69128800 D1 DE69128800 D1 DE 69128800D1 DE 69128800 T DE69128800 T DE 69128800T DE 69128800 T DE69128800 T DE 69128800T DE 69128800 D1 DE69128800 D1 DE 69128800D1
Authority
DE
Germany
Prior art keywords
converter
inductive coupling
improved inductive
improved
coupling
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
DE69128800T
Other languages
English (en)
Other versions
DE69128800T2 (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 DE69128800D1 publication Critical patent/DE69128800D1/de
Application granted granted Critical
Publication of DE69128800T2 publication Critical patent/DE69128800T2/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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
DE69128800T 1990-10-25 1991-10-25 Wandler mit verbesserter induktiver Kopplung Expired - Fee Related DE69128800T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/603,162 US5184267A (en) 1989-06-02 1990-10-25 Transducer with improved inductive coupling

Publications (2)

Publication Number Publication Date
DE69128800D1 true DE69128800D1 (de) 1998-02-26
DE69128800T2 DE69128800T2 (de) 1998-06-18

Family

ID=24414334

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69128800T Expired - Fee Related DE69128800T2 (de) 1990-10-25 1991-10-25 Wandler mit verbesserter induktiver Kopplung
DE69128762T Expired - Fee Related DE69128762T2 (de) 1990-10-25 1991-10-25 Wandler mit verbesserter induktiver Kopplung

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69128762T Expired - Fee Related DE69128762T2 (de) 1990-10-25 1991-10-25 Wandler mit verbesserter induktiver Kopplung

Country Status (6)

Country Link
US (1) US5184267A (de)
EP (2) EP0482956B1 (de)
JP (1) JPH04321910A (de)
CA (1) CA2054100C (de)
DE (2) DE69128800T2 (de)
SG (2) SG47961A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5428893A (en) * 1989-06-02 1995-07-04 Quantum Corporation Method of making a transducer with improved inductive coupling
US5311386A (en) * 1989-06-02 1994-05-10 Digital Equipment Corporation Transducer with improved inductive coupling
US5331496A (en) * 1992-02-14 1994-07-19 Digital Equipment Corporation Thin-film magnetic transducer with a multitude of magnetic flux interactions
KR940006079A (ko) * 1992-05-04 1994-03-23 에이. 네펠라 다니엘 다수의 요크(yoke)를 갖춘 박막자기헤드
JPH07287812A (ja) * 1992-05-04 1995-10-31 Read Rite Corp 複数のヨークを備えた薄膜磁気ヘッド
JPH076326A (ja) * 1993-06-14 1995-01-10 Nec Corp 薄膜磁気ヘッド装置
US5748414A (en) * 1994-06-24 1998-05-05 Samsung Electro-Mechanics Co., Ltd. Magnetoresistive element assembly with longitudinal bias
US6711686B1 (en) * 1999-06-29 2004-03-23 Dell Usa L.P. Security management tool for managing security attributes in computer systems
US6972932B2 (en) * 2000-09-06 2005-12-06 Seagate Technology Llc High-efficiency single-turn write head for high-speed recording
US8792209B2 (en) * 2012-12-20 2014-07-29 Headway Technologies, Inc. Magnetic head for perpendicular recording having a plurality of magnetic path portions

Family Cites Families (45)

* 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
US4242710A (en) * 1979-01-29 1980-12-30 International Business Machines Corporation Thin film head having negative magnetostriction
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
US4613918A (en) * 1982-04-14 1986-09-23 Matsushita Electric Industrial Co., Ltd. Perpendicular magnetic playback head and a perpendicular magnetic recording and reproducing device
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
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
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
US4891725A (en) * 1987-02-17 1990-01-02 Magnetic Peripherals Inc. Magnetoresistive sensor having antiferromagnetic exchange-biased ends
US4868698A (en) * 1987-03-05 1989-09-19 Matsushita Electric Industrial Co., Ltd. Magnetic head
JP2598018B2 (ja) * 1987-05-28 1997-04-09 株式会社東芝 薄膜磁気ヘッド
US4825318A (en) * 1987-06-05 1989-04-25 Carnegie-Mellon University Compound read/write element for rigid magnetic disk files
JPS6464108A (en) * 1987-09-04 1989-03-10 Hitachi Ltd Magnetic head
DE3888287T2 (de) * 1987-10-29 1994-06-09 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
EP0400793A3 (de) * 1989-06-02 1991-01-23 Quantum Corporation Wandler mit induktiver Kopplung
FR2651600B1 (fr) * 1989-09-06 1991-10-25 Commissariat Energie Atomique Procede de realisation d'une tete magnetique a axe de facile aimantation convenablement oriente et tete obtenue par ce procede.

Also Published As

Publication number Publication date
CA2054100C (en) 1998-09-29
DE69128762D1 (de) 1998-02-26
EP0482956A3 (en) 1993-12-08
SG47961A1 (en) 1998-04-17
DE69128762T2 (de) 1998-06-25
EP0482956A2 (de) 1992-04-29
DE69128800T2 (de) 1998-06-18
JPH04321910A (ja) 1992-11-11
EP0612060A1 (de) 1994-08-24
SG52558A1 (en) 1998-09-28
EP0612060B1 (de) 1998-01-21
US5184267A (en) 1993-02-02
CA2054100A1 (en) 1992-04-26
EP0482956B1 (de) 1998-01-21

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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