DE60323703D1 - Ferromagnetisches Eisenlegierungspulver für magnetisches Aufzeicnungsträger und Herstellungsverfahren - Google Patents
Ferromagnetisches Eisenlegierungspulver für magnetisches Aufzeicnungsträger und HerstellungsverfahrenInfo
- Publication number
- DE60323703D1 DE60323703D1 DE60323703T DE60323703T DE60323703D1 DE 60323703 D1 DE60323703 D1 DE 60323703D1 DE 60323703 T DE60323703 T DE 60323703T DE 60323703 T DE60323703 T DE 60323703T DE 60323703 D1 DE60323703 D1 DE 60323703D1
- Authority
- DE
- Germany
- Prior art keywords
- manufacturing
- recording medium
- magnetic recording
- alloy powder
- iron alloy
- 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 - Lifetime
Links
- 229910000640 Fe alloy Inorganic materials 0.000 title 1
- 230000005294 ferromagnetic effect Effects 0.000 title 1
- 230000005291 magnetic effect Effects 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000000843 powder Substances 0.000 title 1
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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70605—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys
- G11B5/70621—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys containing Co metal or alloys
-
- 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70605—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys
- G11B5/70615—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys containing Fe metal or alloys
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
Landscapes
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002061728A JP4143714B2 (ja) | 2002-03-07 | 2002-03-07 | 強磁性鉄合金粉末の製造法 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE60323703D1 true DE60323703D1 (de) | 2008-11-06 |
Family
ID=27751197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60323703T Expired - Lifetime DE60323703D1 (de) | 2002-03-07 | 2003-03-06 | Ferromagnetisches Eisenlegierungspulver für magnetisches Aufzeicnungsträger und Herstellungsverfahren |
Country Status (5)
Country | Link |
---|---|
US (2) | US6841271B2 (de) |
EP (1) | EP1343149B1 (de) |
JP (1) | JP4143714B2 (de) |
CN (1) | CN1285084C (de) |
DE (1) | DE60323703D1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3597098B2 (ja) * | 2000-01-21 | 2004-12-02 | 住友電気工業株式会社 | 合金微粉末とその製造方法、それを用いた成型用材料、スラリーおよび電磁波シールド材料 |
JP4296350B2 (ja) * | 2004-08-23 | 2009-07-15 | Dowaエレクトロニクス株式会社 | 磁気記録媒体用非磁性粉末およびその製造方法ならびにこれを用いた磁気記録媒体 |
WO2011125914A1 (ja) | 2010-03-31 | 2011-10-13 | Dowaエレクトロニクス株式会社 | 金属磁性粉末およびその製造方法、磁性塗料、並びに磁気記録媒体 |
JP5781276B2 (ja) | 2010-05-12 | 2015-09-16 | ジ・アリゾナ・ボード・オブ・リージェンツ・オン・ビハーフ・オブ・ザ・ユニバーシティ・オブ・アリゾナThe Arizona Board Of Regents On Behalf Of The University Of Arizona | 金属磁性粉末の製造方法 |
CN110246521A (zh) * | 2019-06-05 | 2019-09-17 | 陈佳 | 一种录音磁带的磁化层 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0150198B1 (ko) * | 1988-10-31 | 1998-10-15 | 와따나베 히로시 | 바늘형상의 합금자성 분말 및 그 제조방법과 이것을 사용한 자기기록매체 |
US5252380A (en) * | 1988-10-31 | 1993-10-12 | Hitachi Maxell, Ltd. | Acicular alloy containing magnetic recording medium |
JP2904225B2 (ja) | 1990-12-27 | 1999-06-14 | 戸田工業株式会社 | 磁気記録用針状鉄合金磁性粒子粉末の製造法 |
CA2063150C (en) * | 1991-03-18 | 2001-07-17 | Akihiro Nishimura | Magnetic paint material and process for producing the same |
US5645652A (en) * | 1994-12-13 | 1997-07-08 | Toda Kogyo Corporation | Spindle-shaped magnetic iron-based alloy particles containing cobalt and iron as the main ingredients and process for producing the same |
US5735969A (en) * | 1996-03-07 | 1998-04-07 | Imation Corp. | Method of producing acicular magnetic alloy particles |
EP0999185A1 (de) * | 1998-11-05 | 2000-05-10 | Toda Kogyo Corp. | Spindelförmige Goethit-Teilchen, spindelförmige Hämatit- Teilchen und spindelförmige magnetische Eisenoxid-Teilchen die Eisen als Hauptkomponente enthalten |
JP4154111B2 (ja) * | 2000-06-09 | 2008-09-24 | 富士フイルム株式会社 | 磁気記録媒体 |
US6610426B2 (en) * | 2000-10-12 | 2003-08-26 | Fuji Photo Film Co., Ltd. | Magnetic recording medium containing a binder of trifunctional or higher aliphatic (meth) acrylate compound |
-
2002
- 2002-03-07 JP JP2002061728A patent/JP4143714B2/ja not_active Expired - Fee Related
-
2003
- 2003-03-05 US US10/378,861 patent/US6841271B2/en not_active Expired - Lifetime
- 2003-03-06 EP EP03004877A patent/EP1343149B1/de not_active Expired - Lifetime
- 2003-03-06 DE DE60323703T patent/DE60323703D1/de not_active Expired - Lifetime
- 2003-03-07 CN CNB031202071A patent/CN1285084C/zh not_active Expired - Fee Related
-
2004
- 2004-12-03 US US11/002,669 patent/US7166172B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6841271B2 (en) | 2005-01-11 |
CN1285084C (zh) | 2006-11-15 |
US20030172996A1 (en) | 2003-09-18 |
CN1444236A (zh) | 2003-09-24 |
JP2003263720A (ja) | 2003-09-19 |
EP1343149A2 (de) | 2003-09-10 |
JP4143714B2 (ja) | 2008-09-03 |
US20050150574A1 (en) | 2005-07-14 |
US7166172B2 (en) | 2007-01-23 |
EP1343149B1 (de) | 2008-09-24 |
EP1343149A3 (de) | 2003-12-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |