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DE3689534D1 - Dünnschichtmagnetkopf. - Google Patents

Dünnschichtmagnetkopf.

Info

Publication number
DE3689534D1
DE3689534D1 DE86114142T DE3689534T DE3689534D1 DE 3689534 D1 DE3689534 D1 DE 3689534D1 DE 86114142 T DE86114142 T DE 86114142T DE 3689534 T DE3689534 T DE 3689534T DE 3689534 D1 DE3689534 D1 DE 3689534D1
Authority
DE
Germany
Prior art keywords
thin film
magnetic head
film magnetic
head
thin
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
DE86114142T
Other languages
English (en)
Other versions
DE3689534T2 (de
Inventor
Masamichi Yamada
Masaaki Kurebayashi
Masakatsu Saito
Hitoshi Yanagihara
Katsuo Konishi
Toshio Tsuchiya
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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
Priority claimed from JP22674885A external-priority patent/JPS6286515A/ja
Priority claimed from JP24285585A external-priority patent/JPS62103814A/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE3689534D1 publication Critical patent/DE3689534D1/de
Application granted granted Critical
Publication of DE3689534T2 publication Critical patent/DE3689534T2/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
    • G11B5/3109—Details
    • G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
    • 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
    • G11B5/313—Disposition of layers
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Heads (AREA)
DE86114142T 1985-10-14 1986-10-13 Dünnschichtmagnetkopf. Expired - Fee Related DE3689534T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP22674885A JPS6286515A (ja) 1985-10-14 1985-10-14 薄膜磁気ヘツド
JP24285585A JPS62103814A (ja) 1985-10-31 1985-10-31 薄膜磁気ヘツド

Publications (2)

Publication Number Publication Date
DE3689534D1 true DE3689534D1 (de) 1994-02-24
DE3689534T2 DE3689534T2 (de) 1994-05-05

Family

ID=26527335

Family Applications (1)

Application Number Title Priority Date Filing Date
DE86114142T Expired - Fee Related DE3689534T2 (de) 1985-10-14 1986-10-13 Dünnschichtmagnetkopf.

Country Status (3)

Country Link
US (1) US4799118A (de)
EP (1) EP0222183B1 (de)
DE (1) DE3689534T2 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3735148A1 (de) * 1987-10-16 1989-05-03 Siemens Ag Duennfilm-magnetkopf mit schichtweisem aufbau
JP2585400B2 (ja) * 1988-03-23 1997-02-26 株式会社日立製作所 磁気デイスク装置
US5068959A (en) * 1988-07-11 1991-12-03 Digital Equipment Corporation Method of manufacturing a thin film head
JPH0235609A (ja) * 1988-07-26 1990-02-06 Matsushita Electric Ind Co Ltd 磁気ヘッドおよびその製造方法
US4970616A (en) * 1988-08-17 1990-11-13 Digital Equipment Corporation Recording head to minimize undershoots in readback pulses
US5296979A (en) * 1988-09-20 1994-03-22 Hitachi, Ltd. Magnetic disc apparatus with thin film head suitable for high-density recording
US4970615A (en) * 1989-05-26 1990-11-13 Magnetic Peripherals Inc. Pole design for thin film magnetic heads
JP2595097B2 (ja) * 1989-07-05 1997-03-26 株式会社日立製作所 回転磁気ヘッド装置
US5225953A (en) * 1989-11-09 1993-07-06 Sumitomo Special Metal Co., Ltd. Magnetic thin film head of a single magnetic pole for perpendicular recording and reproduction
US5142426A (en) * 1990-06-21 1992-08-25 International Business Machines Corporation Thin film magnetic head having interspersed resistance layers to provide a desired cut-off frequency
US5379172A (en) * 1990-09-19 1995-01-03 Seagate Technology, Inc. Laminated leg for thin film magnetic transducer
US5137750A (en) * 1990-11-06 1992-08-11 Seagate Technology, Inc. Method of making a thin film head with contoured pole face edges for undershoot reduction
US5239435A (en) * 1991-03-25 1993-08-24 Eastman Kodak Company Laminated magnetic record/playback head with thin films of high permeability material spaced apart by very thin films of insulating magnetic material for high bit densities and data transfer rates
US5590008A (en) * 1991-04-25 1996-12-31 Hitachi, Ltd. Magnetic disc unit having a plurality of magnetic heads which include multilayer magnetic films
JP2895680B2 (ja) * 1992-07-08 1999-05-24 シャープ株式会社 磁気ヘッドおよびその製造方法
US5739991A (en) * 1994-02-01 1998-04-14 Sanyo Electric Co., Ltd. Composite thin film head having magnetoresistive and inductive head portions with nonmagnetic thin film interposed between core and shield portions of core layer
SG55435A1 (en) * 1996-12-25 1998-12-21 Hitachi Ltd Thin film magnetic head and recording reproducing separate type magnetic head and magnetic recording reproducing apparatus using them
JPH10302219A (ja) * 1997-04-30 1998-11-13 Fujitsu Ltd 薄膜磁気ヘッドおよび製造方法
US6282056B1 (en) 1999-04-08 2001-08-28 Read-Rite Corporation Tapered stitch pole writer for high density magnetic recording
KR100370403B1 (ko) * 2000-11-24 2003-01-29 삼성전자 주식회사 수직자기기록 방식의 자기헤드
JP2004039090A (ja) * 2002-07-03 2004-02-05 Sony Corp 磁気ヘッド装置並びにこれを用いた磁気テープドライブ装置及び磁気ディスクドライブ装置
JP2004127457A (ja) * 2002-10-04 2004-04-22 Sony Corp 薄膜磁気ヘッド及び磁気テープ装置
JP2004171733A (ja) * 2002-11-06 2004-06-17 Alps Electric Co Ltd 磁気ヘッドおよびそれを備えた磁気テープ装置ならびに磁気ヘッドの製造方法
JP4097627B2 (ja) * 2004-05-20 2008-06-11 Ｔｄｋ株式会社 磁気ヘッドの製造方法
US8634162B2 (en) * 2007-03-08 2014-01-21 HGST Netherlands B.V. Perpendicular write head having a stepped flare structure and method of manufacture thereof
US8649124B2 (en) * 2010-12-13 2014-02-11 Seagate Technology Llc Double shell writers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321641A (en) * 1977-09-02 1982-03-23 Magnex Corporation Thin film magnetic recording heads
US4219855A (en) * 1978-12-21 1980-08-26 International Business Machines Corporation Thin film magnetic head
US4353102A (en) * 1979-07-04 1982-10-05 Matsushita Electric Industrial Co., Ltd. Thin-film magnetic head
JPS59142716A (ja) * 1983-02-04 1984-08-16 Hitachi Ltd 磁気ヘツドおよびその製造方法
JPS59207415A (ja) * 1983-05-11 1984-11-24 Hitachi Ltd 複合型磁気ヘツドおよびその製造方法
JPS60175208A (ja) * 1984-02-22 1985-09-09 Hitachi Ltd 薄膜磁気ヘツド
JPS60226008A (ja) * 1984-04-24 1985-11-11 Hitachi Ltd 薄膜磁気ヘツド及びその製造方法
JPS60246012A (ja) * 1984-05-21 1985-12-05 Hitachi Ltd 薄膜磁気ヘツド
JPS61210506A (ja) * 1985-03-15 1986-09-18 Hitachi Ltd 磁気ヘツド及びその製造方法
JPH0657520A (ja) * 1992-08-12 1994-03-01 Toray Ind Inc 芯鞘複合繊維の製造方法

Also Published As

Publication number Publication date
US4799118A (en) 1989-01-17
EP0222183A2 (de) 1987-05-20
EP0222183A3 (en) 1988-07-13
DE3689534T2 (de) 1994-05-05
EP0222183B1 (de) 1994-01-12

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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