DE3855800D1 - Magnetkopf und dessen Herstellungsverfahren - Google Patents

Magnetkopf und dessen Herstellungsverfahren

Info

Publication number
DE3855800D1
DE3855800D1 DE3855800T DE3855800T DE3855800D1 DE 3855800 D1 DE3855800 D1 DE 3855800D1 DE 3855800 T DE3855800 T DE 3855800T DE 3855800 T DE3855800 T DE 3855800T DE 3855800 D1 DE3855800 D1 DE 3855800D1
Authority
DE
Germany
Prior art keywords
manufacturing process
magnetic head
magnetic
head
manufacturing
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
DE3855800T
Other languages
English (en)
Other versions
DE3855800T2 (de
Inventor
Hiroyuki Okuda
Yoshiaki Shimizu
Kazuo Ino
Kousou Ishihara
Takashi Ogura
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co 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
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Application granted granted Critical
Publication of DE3855800D1 publication Critical patent/DE3855800D1/de
Publication of DE3855800T2 publication Critical patent/DE3855800T2/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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/23—Gap features
    • 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
    • G11B5/1871—Shaping or contouring of the transducing or guiding surface
    • G11B5/1872—Shaping or contouring of the transducing or guiding surface for improving the form of the electrical signal transduced, e.g. compensation of "contour effect"
    • G11B5/1874—Shaping or contouring of the transducing or guiding surface for improving the form of the electrical signal transduced, e.g. compensation of "contour effect" specially adapted for composite pole pieces, e.g. for avoiding "pseudo-gap"
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
DE3855800T 1987-07-14 1988-07-14 Magnetkopf und dessen Herstellungsverfahren Expired - Fee Related DE3855800T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP17515787 1987-07-14
JP19489387 1987-08-04

Publications (2)

Publication Number Publication Date
DE3855800D1 true DE3855800D1 (de) 1997-04-03
DE3855800T2 DE3855800T2 (de) 1997-09-11

Family

ID=26496510

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3855800T Expired - Fee Related DE3855800T2 (de) 1987-07-14 1988-07-14 Magnetkopf und dessen Herstellungsverfahren

Country Status (6)

Country Link
US (1) US4953049A (de)
EP (1) EP0299480B1 (de)
JP (1) JP2781849B2 (de)
KR (1) KR890002831A (de)
CA (1) CA1294039C (de)
DE (1) DE3855800T2 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5038242A (en) * 1988-05-13 1991-08-06 Citizen Watch Co., Ltd. Magnetic head containing a barrier layer
DE3934284C2 (de) * 1988-10-13 1994-06-16 Canon Denshi Kk Magnetkopf
US5022140A (en) * 1989-03-10 1991-06-11 Kabushiki Kaisha Toshiba Method of manufacturing magnetic head
EP0400966B1 (de) * 1989-05-29 1995-02-15 Sharp Kabushiki Kaisha Herstellungsverfahren eines Magnetkopfes
US5289329A (en) * 1989-09-27 1994-02-22 Mitsubishi Denki Kabushiki Kaisha Composite type magnetic head and magnetic recording/playback apparatus adopting the same
JPH0624045B2 (ja) * 1989-10-03 1994-03-30 日本碍子株式会社 複合型磁気ヘッド用コアの製造方法
US5182690A (en) * 1989-12-29 1993-01-26 Sony Corporation Fe-n-based soft magnetic thin films and magnetic heads using such films
JPH03286407A (ja) * 1990-04-03 1991-12-17 Alps Electric Co Ltd 磁気ヘッド
JPH04212706A (ja) * 1990-05-23 1992-08-04 Sanyo Electric Co Ltd 磁気ヘッド
JPH0432006A (ja) * 1990-05-29 1992-02-04 Sankyo Seiki Mfg Co Ltd 磁気ヘッドの製造方法
EP0466159B1 (de) * 1990-07-13 1996-02-28 Fuji Photo Film Co., Ltd. Zusammengesetzter Magnetkopf
JPH04123302A (ja) * 1990-09-13 1992-04-23 Minebea Co Ltd 磁気ヘッド
KR100242036B1 (ko) * 1991-01-08 2000-02-01 다카노 야스아키 자기 헤드
WO1993011531A1 (en) * 1991-12-02 1993-06-10 Nikko Kyodo Company, Limited Thin film magnetic head
KR100239478B1 (ko) * 1992-06-04 2000-01-15 구자홍 자기헤드 제조방법
JPH0793709A (ja) * 1993-07-29 1995-04-07 Sony Corp 磁気ヘッド
JP3462019B2 (ja) * 1996-10-23 2003-11-05 アルプス電気株式会社 磁気ヘッド
KR100424849B1 (ko) * 2001-03-13 2004-03-27 (주)서신엔지니어링 저공해 고발열량 성형탄의 제조방법
KR20030030800A (ko) * 2001-10-12 2003-04-18 김정수 산업폐기물을 이용한 대체연료 제조방법

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163518A (en) * 1980-05-16 1981-12-16 Hitachi Ltd Magnetic head
WO1983003918A1 (en) * 1982-05-04 1983-11-10 Eastman Kodak Company Magnetic head having highly saturable gap liner
JPS60138708A (ja) * 1983-12-27 1985-07-23 Ngk Insulators Ltd 磁気ヘッド用コアの製造法
JPH0656647B2 (ja) * 1985-01-26 1994-07-27 ソニー株式会社 磁気ヘツド
JPS613309A (ja) * 1984-06-18 1986-01-09 Hitachi Ltd 磁気ヘツド
JPS6174110A (ja) * 1984-09-19 1986-04-16 Hitachi Maxell Ltd 磁気ヘツド
JPS61294618A (ja) * 1985-06-21 1986-12-25 Toshiba Corp 磁気ヘツドの製造方法
JPS6257115A (ja) * 1985-09-05 1987-03-12 Sanyo Electric Co Ltd 磁気ヘツドの製造方法
JPS62102409A (ja) * 1985-10-30 1987-05-12 Canon Inc 磁気ヘツドコア
JPS62110608A (ja) * 1985-11-08 1987-05-21 Matsushita Electric Ind Co Ltd 磁気ヘツドの製造法
JPH0772927B2 (ja) * 1985-12-18 1995-08-02 ソニー株式会社 磁気ヘツド
DE3609958A1 (de) * 1986-03-25 1987-10-01 Grundig Emv Mig-magnetkopf
JPS63173208A (ja) * 1987-01-10 1988-07-16 Mitsumi Electric Co Ltd 磁気ヘツド及びその製造方法
JPH06257115A (ja) * 1993-03-05 1994-09-13 Sekine:Kk 駐車区割りラインのペイントガイド装置及びこの装置を用いた駐車区割りラインのペイント方法

Also Published As

Publication number Publication date
EP0299480A3 (de) 1990-03-14
EP0299480A2 (de) 1989-01-18
EP0299480B1 (de) 1997-02-26
JPH01133204A (ja) 1989-05-25
JP2781849B2 (ja) 1998-07-30
CA1294039C (en) 1992-01-07
DE3855800T2 (de) 1997-09-11
US4953049A (en) 1990-08-28
KR890002831A (ko) 1989-04-11

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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