KR910006918A - 마그네틱 헤드용 코어의 제조방법. - Google Patents

마그네틱 헤드용 코어의 제조방법. Download PDF

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Publication number
KR910006918A
KR910006918A KR1019900014212A KR900014212A KR910006918A KR 910006918 A KR910006918 A KR 910006918A KR 1019900014212 A KR1019900014212 A KR 1019900014212A KR 900014212 A KR900014212 A KR 900014212A KR 910006918 A KR910006918 A KR 910006918A
Authority
KR
South Korea
Prior art keywords
aluminum
core
aqueous solution
manufacturing
hydroxide aqueous
Prior art date
Application number
KR1019900014212A
Other languages
English (en)
Other versions
KR960002609B1 (ko
Inventor
히데또 산다이지
고오지 이께다
유우시 오니시
Original Assignee
고하라 도시히또
닛뽕 가이시 가부시끼가이샤
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 고하라 도시히또, 닛뽕 가이시 가부시끼가이샤 filed Critical 고하라 도시히또
Publication of KR910006918A publication Critical patent/KR910006918A/ko
Application granted granted Critical
Publication of KR960002609B1 publication Critical patent/KR960002609B1/ko

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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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
    • C04B41/5338—Etching
    • C04B41/5353—Wet etching, e.g. with etchants dissolved in organic solvents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/91—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/02—Local etching
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Magnetic Heads (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

내용 없음.

Description

마그네틱 헤드용 코어의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 실시에 사용되는 장치의 일실시예의 개략도.

Claims (3)

  1. 페라이트와 센더스트로 구성되는 마그네틱 헤드용 합성 코어의 트랙폭을 레이저 가공으로 형성하는 제조방법에 있어서, 알루미늄산염 이온을 발생시키기 위한 첨가제중 1종 이상을 첨가한 알칼리금속 수산화물 수용액에서 레이저유도에칭으로 가공하는 것을 특징으로 하는 마그네틱 헤드용 합성 코어의 제조방법.
  2. 제1항에 있어서, 상기 알칼리금속 수산화물 수용액은 수산화칼륨 수용액인 것을 특징으로 하는 제조방법.
  3. 제1항에 있어서, 상기 첨가제는 알루미늄, 수산화 알루미늄, 질산알루미늄, 염화알루미늄, 황산알루미늄, 알루민산나트륨, 황산칼륨알루미늄 및 황산나트륨알루미늄인 것을 특징으로 하는 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900014212A 1989-09-08 1990-09-08 마그네틱 헤드용 코어의 제조방법 KR960002609B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1231664A JPH0731780B2 (ja) 1989-09-08 1989-09-08 磁気ヘッド用コアの製造方法
JP1-231664 1989-09-08

Publications (2)

Publication Number Publication Date
KR910006918A true KR910006918A (ko) 1991-04-30
KR960002609B1 KR960002609B1 (ko) 1996-02-23

Family

ID=16927048

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900014212A KR960002609B1 (ko) 1989-09-08 1990-09-08 마그네틱 헤드용 코어의 제조방법

Country Status (5)

Country Link
US (1) US5041189A (ko)
EP (1) EP0416939B1 (ko)
JP (1) JPH0731780B2 (ko)
KR (1) KR960002609B1 (ko)
DE (1) DE69024288T2 (ko)

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US5765012A (en) * 1990-11-13 1998-06-09 International Business Machines Corporation Controller for a SIMD/MIMD array having an instruction sequencer utilizing a canned routine library
US5963745A (en) * 1990-11-13 1999-10-05 International Business Machines Corporation APAP I/O programmable router
US5588152A (en) * 1990-11-13 1996-12-24 International Business Machines Corporation Advanced parallel processor including advanced support hardware
US5734921A (en) * 1990-11-13 1998-03-31 International Business Machines Corporation Advanced parallel array processor computer package
DE69131272T2 (de) * 1990-11-13 1999-12-09 International Business Machines Corp., Armonk Paralleles Assoziativprozessor-System
US5966528A (en) * 1990-11-13 1999-10-12 International Business Machines Corporation SIMD/MIMD array processor with vector processing
US5765015A (en) * 1990-11-13 1998-06-09 International Business Machines Corporation Slide network for an array processor
US5765011A (en) * 1990-11-13 1998-06-09 International Business Machines Corporation Parallel processing system having a synchronous SIMD processing with processing elements emulating SIMD operation using individual instruction streams
US5815723A (en) * 1990-11-13 1998-09-29 International Business Machines Corporation Picket autonomy on a SIMD machine
US5617577A (en) * 1990-11-13 1997-04-01 International Business Machines Corporation Advanced parallel array processor I/O connection
US5809292A (en) * 1990-11-13 1998-09-15 International Business Machines Corporation Floating point for simid array machine
US5828894A (en) * 1990-11-13 1998-10-27 International Business Machines Corporation Array processor having grouping of SIMD pickets
US5713037A (en) * 1990-11-13 1998-01-27 International Business Machines Corporation Slide bus communication functions for SIMD/MIMD array processor
US5625836A (en) * 1990-11-13 1997-04-29 International Business Machines Corporation SIMD/MIMD processing memory element (PME)
US5630162A (en) * 1990-11-13 1997-05-13 International Business Machines Corporation Array processor dotted communication network based on H-DOTs
US5963746A (en) * 1990-11-13 1999-10-05 International Business Machines Corporation Fully distributed processing memory element
US5590345A (en) * 1990-11-13 1996-12-31 International Business Machines Corporation Advanced parallel array processor(APAP)
JP2642039B2 (ja) * 1992-05-22 1997-08-20 インターナショナル・ビジネス・マシーンズ・コーポレイション アレイ・プロセッサ
US5413672A (en) * 1992-07-22 1995-05-09 Ngk Insulators, Ltd. Method of etching sendust and method of pattern-etching sendust and chromium films
US7998579B2 (en) 2002-08-12 2011-08-16 Exxonmobil Chemical Patents Inc. Polypropylene based fibers and nonwovens
US8003725B2 (en) 2002-08-12 2011-08-23 Exxonmobil Chemical Patents Inc. Plasticized hetero-phase polyolefin blends
US7531594B2 (en) 2002-08-12 2009-05-12 Exxonmobil Chemical Patents Inc. Articles from plasticized polyolefin compositions
US7271209B2 (en) 2002-08-12 2007-09-18 Exxonmobil Chemical Patents Inc. Fibers and nonwovens from plasticized polyolefin compositions
US8192813B2 (en) 2003-08-12 2012-06-05 Exxonmobil Chemical Patents, Inc. Crosslinked polyethylene articles and processes to produce same
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Also Published As

Publication number Publication date
KR960002609B1 (ko) 1996-02-23
DE69024288T2 (de) 1996-07-11
JPH0731780B2 (ja) 1995-04-10
DE69024288D1 (de) 1996-02-01
EP0416939B1 (en) 1995-12-20
EP0416939A2 (en) 1991-03-13
JPH0395709A (ja) 1991-04-22
US5041189A (en) 1991-08-20
EP0416939A3 (en) 1992-08-12

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