ATE408219T1 - Pulver für die untere schicht des anwendungstyps eines geschichteten magnetischen aufzeichnungsmediums und magnetisches aufzeichnungsmedium damit - Google Patents
Pulver für die untere schicht des anwendungstyps eines geschichteten magnetischen aufzeichnungsmediums und magnetisches aufzeichnungsmedium damitInfo
- Publication number
- ATE408219T1 ATE408219T1 AT04747162T AT04747162T ATE408219T1 AT E408219 T1 ATE408219 T1 AT E408219T1 AT 04747162 T AT04747162 T AT 04747162T AT 04747162 T AT04747162 T AT 04747162T AT E408219 T1 ATE408219 T1 AT E408219T1
- Authority
- AT
- Austria
- Prior art keywords
- recording medium
- magnetic recording
- powder
- lower layer
- application type
- Prior art date
Links
- 239000000843 powder Substances 0.000 abstract 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- 239000011574 phosphorus Substances 0.000 abstract 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract 2
- 239000011734 sodium Substances 0.000 abstract 2
- 238000004438 BET method Methods 0.000 abstract 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- -1 phosphorus compound Chemical class 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 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
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/22—Compounds of iron
- C09C1/24—Oxides of iron
-
- 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
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
-
- 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
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/733—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the addition of non-magnetic particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003192319 | 2003-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE408219T1 true ATE408219T1 (de) | 2008-09-15 |
Family
ID=33562397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT04747162T ATE408219T1 (de) | 2003-07-04 | 2004-07-01 | Pulver für die untere schicht des anwendungstyps eines geschichteten magnetischen aufzeichnungsmediums und magnetisches aufzeichnungsmedium damit |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20060166040A1 (de) |
| EP (1) | EP1643493B1 (de) |
| JP (1) | JP4787958B2 (de) |
| KR (1) | KR20060026124A (de) |
| CN (1) | CN100423089C (de) |
| AT (1) | ATE408219T1 (de) |
| DE (1) | DE602004016511D1 (de) |
| WO (1) | WO2005004116A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7357997B2 (en) * | 2002-04-03 | 2008-04-15 | Dowa Electronics Materials Co., Ltd. | Powder for underlayer of coating-type magnetic recording medium and magnetic recording medium comprising the same |
| JP2006031751A (ja) * | 2004-07-12 | 2006-02-02 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| JP5057042B2 (ja) * | 2007-05-23 | 2012-10-24 | 戸田工業株式会社 | 磁気記録媒体の非磁性下地層用非磁性粒子粉末、及び磁気記録媒体 |
| US11205455B2 (en) * | 2018-03-30 | 2021-12-21 | Sony Corporation | Magnetic recording medium |
| JP7378498B2 (ja) * | 2019-08-13 | 2023-11-13 | エルジー エナジー ソリューション リミテッド | 表面にリン酸陰イオンが吸着されたオキシ水酸化硝酸鉄、この製造方法、上記表面にリン酸陰イオンが吸着されたオキシ水酸化硝酸鉄を含むリチウム二次電池用正極及びこれを含むリチウム二次電池 |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4758415A (en) * | 1980-12-22 | 1988-07-19 | Basf Corporation | Process for removing soluble metal cations in iron oxide pigments |
| JP2872227B2 (ja) * | 1992-08-07 | 1999-03-17 | 戸田工業株式会社 | 磁気記録媒体用下地層 |
| JPH06302413A (ja) * | 1993-04-16 | 1994-10-28 | Ishihara Sangyo Kaisha Ltd | 磁気記録用金属磁性粉末の製造方法 |
| JP2924941B2 (ja) * | 1993-12-27 | 1999-07-26 | 戸田工業株式会社 | 磁気記録媒体用下地層 |
| JPH0922524A (ja) * | 1995-07-06 | 1997-01-21 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| KR970023005A (ko) * | 1995-10-20 | 1997-05-30 | 토다 토시유끼 | 자기기록매체용 비자성 하도층용 헤마타이트 입자, 그의 제조방법, 비자성 하도층 및 자기기록매체 |
| JP3509837B2 (ja) * | 1995-10-20 | 2004-03-22 | 戸田工業株式会社 | 鉄を主成分とする金属磁性粒子粉末を使用している磁気記録媒体の非磁性下地層用ヘマタイト粒子粉末、該ヘマタイト粒子粉末を用いた磁気記録媒体の非磁性下地層、該非磁性下地層を用いた磁気記録媒体並びに該ヘマタイト粒子粉末の製造法 |
| JPH09259422A (ja) * | 1996-03-22 | 1997-10-03 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| DE69815652T2 (de) * | 1997-12-26 | 2004-05-19 | Toda Kogyo Corp. | Nadelförmige Hämatitteilchen und magnetischer Aufzeichnungsträger |
| JP3832539B2 (ja) * | 1998-01-12 | 2006-10-11 | 戸田工業株式会社 | 磁気記録媒体 |
| JPH11273056A (ja) * | 1998-03-25 | 1999-10-08 | Tdk Corp | 磁気記録媒体及びその製造方法 |
| JPH11353637A (ja) * | 1998-04-10 | 1999-12-24 | Toda Kogyo Corp | 非磁性下地層用針状ヘマタイト粒子粉末及び該針状ヘマタイト粒子粉末を用いた非磁性下地層を有する磁気記録媒体 |
| JP2000123354A (ja) * | 1998-10-20 | 2000-04-28 | Toda Kogyo Corp | 磁気記録媒体の非磁性下地層用粒子粉末及びその製造法並びに磁気記録媒体 |
| JP3427883B2 (ja) * | 1998-11-04 | 2003-07-22 | 戸田工業株式会社 | 磁気記録媒体の非磁性下地層用非磁性粒子粉末及びその製造法並びに磁気記録媒体 |
| EP1065675B1 (de) * | 1998-12-18 | 2006-10-25 | Dowa Mining Co., Ltd. | Ferromagnetisches pulver |
| JP4732556B2 (ja) * | 1999-01-29 | 2011-07-27 | 戸田工業株式会社 | 磁気記録媒体の非磁性下地層用非磁性粒子粉末及びその製造法並びに磁気記録媒体 |
| JP2000251248A (ja) * | 1999-02-24 | 2000-09-14 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| JP4305589B2 (ja) * | 1999-05-24 | 2009-07-29 | 戸田工業株式会社 | 磁気記録媒体の非磁性下地層用非磁性粒子粉末及びその製造法並びに磁気記録媒体 |
| JP2001243619A (ja) * | 2000-02-28 | 2001-09-07 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| JP2001325716A (ja) * | 2000-05-16 | 2001-11-22 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| JP2001344738A (ja) * | 2000-05-26 | 2001-12-14 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| 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 |
-
2004
- 2004-07-01 KR KR1020067000138A patent/KR20060026124A/ko not_active Application Discontinuation
- 2004-07-01 CN CNB2004800190104A patent/CN100423089C/zh not_active Expired - Fee Related
- 2004-07-01 EP EP04747162A patent/EP1643493B1/de not_active Not-in-force
- 2004-07-01 AT AT04747162T patent/ATE408219T1/de not_active IP Right Cessation
- 2004-07-01 US US10/563,111 patent/US20060166040A1/en not_active Abandoned
- 2004-07-01 JP JP2005511410A patent/JP4787958B2/ja not_active Expired - Fee Related
- 2004-07-01 DE DE602004016511T patent/DE602004016511D1/de active Active
- 2004-07-01 WO PCT/JP2004/009693 patent/WO2005004116A1/ja active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| CN1816849A (zh) | 2006-08-09 |
| JPWO2005004116A1 (ja) | 2006-08-17 |
| EP1643493A1 (de) | 2006-04-05 |
| US20060166040A1 (en) | 2006-07-27 |
| EP1643493B1 (de) | 2008-09-10 |
| JP4787958B2 (ja) | 2011-10-05 |
| CN100423089C (zh) | 2008-10-01 |
| KR20060026124A (ko) | 2006-03-22 |
| EP1643493A4 (de) | 2006-07-26 |
| DE602004016511D1 (de) | 2008-10-23 |
| WO2005004116A1 (ja) | 2005-01-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |