KR910006918A - 마그네틱 헤드용 코어의 제조방법. - Google Patents
마그네틱 헤드용 코어의 제조방법. Download PDFInfo
- 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
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
-
- 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
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 실시에 사용되는 장치의 일실시예의 개략도.
Claims (3)
- 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.
- 제1항에 있어서, 상기 알칼리금속 수산화물 수용액은 수산화칼륨 수용액인 것을 특징으로 하는 제조방법.
- 제1항에 있어서, 상기 첨가제는 알루미늄, 수산화 알루미늄, 질산알루미늄, 염화알루미늄, 황산알루미늄, 알루민산나트륨, 황산칼륨알루미늄 및 황산나트륨알루미늄인 것을 특징으로 하는 제조방법.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
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) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5794059A (en) * | 1990-11-13 | 1998-08-11 | International Business Machines Corporation | N-dimensional modified hypercube |
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 |
US8389615B2 (en) | 2004-12-17 | 2013-03-05 | Exxonmobil Chemical Patents Inc. | Elastomeric compositions comprising vinylaromatic block copolymer, polypropylene, plastomer, and low molecular weight polyolefin |
WO2007011541A1 (en) | 2005-07-15 | 2007-01-25 | Exxonmobil Chemical Patents Inc. | Elastomeric compositions |
US9452495B1 (en) * | 2011-07-08 | 2016-09-27 | Sixpoint Materials, Inc. | Laser slicer of crystal ingots and a method of slicing gallium nitride ingots using a laser slicer |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2869267A (en) * | 1957-02-28 | 1959-01-20 | Turco Products Inc | Method of etching aluminum and aluminum alloys |
US3356550A (en) * | 1964-03-16 | 1967-12-05 | Boeing Co | Chemical milling of aluminum alloys |
US3300349A (en) * | 1964-04-15 | 1967-01-24 | Boeing Co | Chemical milling process and related solutions for aluminum |
US3475241A (en) * | 1966-02-08 | 1969-10-28 | Aluminum Co Of America | Process of making aluminum printing plates |
JPS61260408A (ja) * | 1985-05-14 | 1986-11-18 | Matsushita Electric Ind Co Ltd | 磁気ヘッドのトラック加工方法 |
SU1320260A1 (ru) * | 1986-02-05 | 1987-06-30 | Ворошиловградский машиностроительный институт | Раствор дл химической обработки деталей из алюминиевых сплавов |
US4751779A (en) * | 1986-04-02 | 1988-06-21 | Ds Scanner Co., Ltd. | Method of producing a core for magnetic head |
CA1279104C (en) * | 1986-08-08 | 1991-01-15 | Quantum Corporation | Lithographic technique using laser for fabrication of electronic components and the like |
JPS63270483A (ja) * | 1987-04-27 | 1988-11-08 | Nec Corp | 薄膜除去方法 |
JPH0719347B2 (ja) * | 1988-09-24 | 1995-03-06 | 日本碍子株式会社 | 固定磁気ディスク装置用コアスライダの製造法 |
US4982065A (en) * | 1989-03-07 | 1991-01-01 | Ngk Insulators, Ltd. | Method of producing a core for magnetic head |
-
1989
- 1989-09-08 JP JP1231664A patent/JPH0731780B2/ja not_active Expired - Lifetime
-
1990
- 1990-09-07 DE DE69024288T patent/DE69024288T2/de not_active Expired - Fee Related
- 1990-09-07 EP EP90309817A patent/EP0416939B1/en not_active Expired - Lifetime
- 1990-09-08 KR KR1019900014212A patent/KR960002609B1/ko not_active IP Right Cessation
- 1990-09-10 US US07/579,584 patent/US5041189A/en not_active Expired - Fee Related
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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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20020110 Year of fee payment: 7 |
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LAPS | Lapse due to unpaid annual fee |