PT93377A - Cabeca magnetica de entreferro metalico - Google Patents

Cabeca magnetica de entreferro metalico

Info

Publication number
PT93377A
PT93377A PT93377A PT9337790A PT93377A PT 93377 A PT93377 A PT 93377A PT 93377 A PT93377 A PT 93377A PT 9337790 A PT9337790 A PT 9337790A PT 93377 A PT93377 A PT 93377A
Authority
PT
Portugal
Prior art keywords
entreferro
metallic
magnetic cabin
cabin
magnetic
Prior art date
Application number
PT93377A
Other languages
English (en)
Other versions
PT93377B (pt
Inventor
Mats Thomas Rask
Leroy Leland Long Worth
Original Assignee
Seagate Technology
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 Seagate Technology filed Critical Seagate Technology
Publication of PT93377A publication Critical patent/PT93377A/pt
Publication of PT93377B publication Critical patent/PT93377B/pt

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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/1875—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers
    • G11B5/1877—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers including at least one magnetic thin film
    • G11B5/1878—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers including at least one magnetic thin film disposed immediately adjacent to the transducing gap, e.g. "Metal-In-Gap" structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
PT93377A 1989-05-31 1990-03-08 Cabeca magnetica de entreferro metalico PT93377B (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/359,162 US5001589A (en) 1989-05-31 1989-05-31 Tungsten and tantalum diffusion barriers for Metal-In-Gap magnetic heads

Publications (2)

Publication Number Publication Date
PT93377A true PT93377A (pt) 1992-01-31
PT93377B PT93377B (pt) 1997-10-31

Family

ID=23412596

Family Applications (1)

Application Number Title Priority Date Filing Date
PT93377A PT93377B (pt) 1989-05-31 1990-03-08 Cabeca magnetica de entreferro metalico

Country Status (7)

Country Link
US (1) US5001589A (pt)
EP (1) EP0400242B1 (pt)
JP (1) JPH0619812B2 (pt)
CN (1) CN1021491C (pt)
DE (1) DE68923366T2 (pt)
HK (1) HK96596A (pt)
PT (1) PT93377B (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03286407A (ja) * 1990-04-03 1991-12-17 Alps Electric Co Ltd 磁気ヘッド
JPH0413207A (ja) * 1990-04-28 1992-01-17 Hitachi Metals Ltd 複合型磁気ヘッド
NL9100192A (nl) * 1991-02-04 1992-09-01 Philips Nv Magneetkop.
EP0624305A4 (en) * 1992-01-28 1995-12-13 Hutchinson Technology Carrier strip head interconnect assembly.
US5558944A (en) * 1993-08-10 1996-09-24 Tdk Corporation Magnetic head and a process for production thereof
JP3511371B2 (ja) * 2000-04-13 2004-03-29 アルプス電気株式会社 薄膜磁気ヘッド及びその製造方法
US7500302B2 (en) * 2005-04-11 2009-03-10 Hitachi Global Storage Technologies, Netherlands B.V. Process for fabricating a magnetic recording head with a laminated write gap
US7525760B2 (en) * 2005-04-11 2009-04-28 Hitachi Global Storage Technologies B.V. Laminated write gap to improve writer performance

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AT365804B (de) * 1977-12-20 1982-02-25 Bogen Wolfgang Abriebfester magnetkopf
DE2856795C2 (de) * 1977-12-30 1984-12-06 Noboru Prof. Sendai Tsuya Verwendung einer Stahlschmelze für ein Verfahren zum Stranggießen eines dünnen Bandes
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FR2427989A1 (fr) * 1978-06-07 1980-01-04 Rhone Poulenc Textile Dispositif pour la regulation de la vitesse d'un organe delivreur ou renvideur de fil, en fonction de la vitesse d'appel de delivrage du fil
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JPS5888814A (ja) * 1981-11-24 1983-05-27 Matsushita Electric Ind Co Ltd 磁気ヘツド
US4578728A (en) * 1981-12-09 1986-03-25 Matsushita Electric Industrial Co., Ltd. Magnetic head
US4577250A (en) * 1981-12-18 1986-03-18 Victor Company Of Japan, Limited Hall effect magnetic head
EP0091989A1 (en) * 1982-04-15 1983-10-26 The Furukawa Electric Co., Ltd. High permeability alloy
NL192546C (nl) * 1982-07-19 1997-09-02 Nippon Telegraph & Telephone Leeskop voor een met hoge dichtheid uitgevoerde magnetische registratie.
US4697217A (en) * 1982-10-13 1987-09-29 Sanyo Electric Co., Ltd. Magnetic head having a main core of sheet amorphous magnetic material
JPS59185015A (ja) * 1983-04-04 1984-10-20 Hitachi Ltd 磁気ヘツドおよびその製造方法
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JPS6063710A (ja) * 1983-09-19 1985-04-12 Hitachi Ltd 磁気ディスク媒体
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JPH0622170B2 (ja) * 1983-12-16 1994-03-23 株式会社日立製作所 磁気ヘッド
JPS60229210A (ja) * 1983-12-30 1985-11-14 Sony Corp 磁気ヘツド
NL8400140A (nl) * 1984-01-17 1985-08-16 Philips Nv Magneetkop.
JPH0656647B2 (ja) * 1985-01-26 1994-07-27 ソニー株式会社 磁気ヘツド
FR2563063B1 (fr) * 1984-04-12 1986-06-20 Bech Jean Coupleur-reducteur epicycloidal a induction pour machines a tres grande vitesse de rotation
JPS6111921A (ja) * 1984-06-27 1986-01-20 Tdk Corp 磁気記録媒体および磁気記録方法
JPH0687300B2 (ja) * 1984-08-02 1994-11-02 ティーディーケイ株式会社 磁気記録方法
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JPS6174103A (ja) * 1984-09-20 1986-04-16 Hitachi Metals Ltd 磁気記録装置
JPS61184705A (ja) * 1985-02-13 1986-08-18 Hitachi Ltd 磁気ヘツド
EP0191447B1 (en) * 1985-02-15 1992-05-13 Matsushita Electric Industrial Co., Ltd. Magnetic head
JPH0640361B2 (ja) * 1985-03-07 1994-05-25 日本ビクター株式会社 垂直磁気記録再生方法
GB2174710B (en) * 1985-04-22 1989-04-19 Tdk Corp Coating type perpendicular magnetic recording medium for digital recording
JPH0770020B2 (ja) * 1985-06-14 1995-07-31 株式会社日立製作所 磁気ヘツド
US4783711A (en) * 1985-07-12 1988-11-08 Hitachi, Ltd. Magnetoresistive sensor having magnetic shields of ferrite
DE3537110A1 (de) * 1985-10-18 1987-04-23 Grundig Emv Mig-magnetkopf
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JPS62192016A (ja) * 1986-02-19 1987-08-22 Alps Electric Co Ltd 垂直磁気記録用磁気ヘツドおよびその製造方法
JPH0727617B2 (ja) * 1986-03-19 1995-03-29 日本電気株式会社 薄膜磁気ヘッドの製造方法
DE3609958A1 (de) * 1986-03-25 1987-10-01 Grundig Emv Mig-magnetkopf
EP0246706B1 (en) * 1986-05-21 1991-05-08 Koninklijke Philips Electronics N.V. Magnetic transducing head having clad core faces
GB8615248D0 (en) * 1986-06-23 1986-07-30 Blakeley P J Arc welding
US4742412A (en) * 1986-07-02 1988-05-03 Alps Electric Co Ltd Magnetic head having dual asymmetric gaps
JPH0731782B2 (ja) * 1986-10-28 1995-04-10 アルプス電気株式会社 浮動式磁気ヘツド
DE3769301D1 (de) * 1986-12-03 1991-05-16 Philips Nv Magnetkopf mit einem elektro-chemisch inerten spalt aus hartem material.
US4767957A (en) * 1986-12-08 1988-08-30 General Electric Company Liquid metal collector for acyclic generator
US4712032A (en) * 1986-12-08 1987-12-08 General Electric Company Liquid metal circulation in an acyclic generator collector
JPS6416005A (en) * 1987-07-09 1989-01-19 Nec Corp Transistor amplifier
JPS6486307A (en) * 1987-09-29 1989-03-31 Citizen Watch Co Ltd Manufacture of metal-in gap magnetic head
US4780779A (en) * 1987-11-19 1988-10-25 Ampex Corporation Laminated sendust metal-in-gap video head
DE3807894C1 (en) * 1988-03-10 1989-02-23 Robert Bosch Gmbh, 7000 Stuttgart, De Process for producing MIG magnetic heads
JP2625838B2 (ja) * 1988-03-23 1997-07-02 ソニー株式会社 磁気ヘッド
EP0378160B1 (en) * 1989-01-10 1994-11-23 Matsushita Electric Industrial Co., Ltd. Magnetic head and method of producing the same

Also Published As

Publication number Publication date
US5001589A (en) 1991-03-19
CN1047748A (zh) 1990-12-12
PT93377B (pt) 1997-10-31
JPH038104A (ja) 1991-01-16
CN1021491C (zh) 1993-06-30
DE68923366T2 (de) 1995-11-09
EP0400242A1 (en) 1990-12-05
HK96596A (en) 1996-06-14
JPH0619812B2 (ja) 1994-03-16
DE68923366D1 (de) 1995-08-10
EP0400242B1 (en) 1995-07-05

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Legal Events

Date Code Title Description
BB1A Laying open of patent application

Effective date: 19911105

FG3A Patent granted, date of granting

Effective date: 19970723

NF3A Restitutio in integrum

Free format text: 20000505 RESTITUTIO IN INTEGRUM

MM3A Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20030131