DE69607717D1 - Magnetischer Aufzeichnungsträger - Google Patents
Magnetischer AufzeichnungsträgerInfo
- Publication number
- DE69607717D1 DE69607717D1 DE69607717T DE69607717T DE69607717D1 DE 69607717 D1 DE69607717 D1 DE 69607717D1 DE 69607717 T DE69607717 T DE 69607717T DE 69607717 T DE69607717 T DE 69607717T DE 69607717 D1 DE69607717 D1 DE 69607717D1
- Authority
- DE
- Germany
- Prior art keywords
- record carrier
- magnetic record
- magnetic
- carrier
- record
- 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
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
- G11B5/714—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 dimension of the magnetic particles
-
- 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
-
- 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
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
-
- 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
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26567395A JP3473877B2 (ja) | 1995-10-13 | 1995-10-13 | 磁気記録媒体 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69607717D1 true DE69607717D1 (de) | 2000-05-18 |
DE69607717T2 DE69607717T2 (de) | 2000-08-03 |
Family
ID=17420411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69607717T Expired - Lifetime DE69607717T2 (de) | 1995-10-13 | 1996-10-10 | Magnetischer Aufzeichnungsträger |
Country Status (4)
Country | Link |
---|---|
US (1) | US5770302A (de) |
EP (1) | EP0768644B1 (de) |
JP (1) | JP3473877B2 (de) |
DE (1) | DE69607717T2 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69737438D1 (de) * | 1996-12-27 | 2007-04-19 | Tdk Corp | Magnetisches Aufzeichnungsmedium |
KR20010029493A (ko) | 1997-02-10 | 2001-04-06 | 무네유키 가코우 | 자기기록매체 |
JPH10275325A (ja) * | 1997-03-28 | 1998-10-13 | Fuji Photo Film Co Ltd | ディスク状磁気記録媒体 |
JP3922664B2 (ja) * | 1997-05-21 | 2007-05-30 | 富士フイルム株式会社 | 磁気記録媒体 |
EP0889464B1 (de) | 1997-06-30 | 2003-09-03 | Fuji Photo Film Co., Ltd. | Magnetisches Aufzeichnungsmedium |
US6096406A (en) * | 1997-07-15 | 2000-08-01 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
US6391450B1 (en) | 1999-05-20 | 2002-05-21 | Toda Kogyo Corporation | Spindle-shaped goethite particles, spindle-shaped hematite particles, spindle-shaped magnetic iron-based alloy particles, and process for producing the same |
JP2001176054A (ja) | 1999-12-17 | 2001-06-29 | Fuji Photo Film Co Ltd | 強磁性金属粉末及びこれを用いた磁気記録媒体 |
JP2002260211A (ja) * | 2001-02-28 | 2002-09-13 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
JP4496452B2 (ja) † | 2001-03-30 | 2010-07-07 | Dic株式会社 | 磁気記録媒体 |
JP3866074B2 (ja) * | 2001-10-12 | 2007-01-10 | 富士フイルムホールディングス株式会社 | 強磁性金属粉末及びその製造方法並びに磁気記録媒体 |
JP4677734B2 (ja) * | 2004-04-19 | 2011-04-27 | Dowaエレクトロニクス株式会社 | 磁気記録媒体用磁性粉末 |
JP4625983B2 (ja) * | 2007-03-15 | 2011-02-02 | Dowaエレクトロニクス株式会社 | 磁気記録媒体用の強磁性鉄合金粉末 |
JP2007194666A (ja) * | 2007-04-09 | 2007-08-02 | Dowa Holdings Co Ltd | 強磁性金属粉末製造用の先駆物質 |
WO2010016154A1 (ja) * | 2008-08-05 | 2010-02-11 | Dowaエレクトロニクス株式会社 | 磁気記録用金属磁性粉およびその製造法 |
JP4839459B2 (ja) * | 2010-06-17 | 2011-12-21 | Dowaエレクトロニクス株式会社 | 磁気記録媒体用の強磁性鉄合金粉末 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5366795A (en) * | 1992-10-21 | 1994-11-22 | Konica Corporation | Magnetic recording medium having three layers each containing particles and a binder wherein the relationship of particle crystal size in the second and third layers is specified |
JP2849514B2 (ja) * | 1992-10-29 | 1999-01-20 | 富士写真フイルム株式会社 | 磁気記録媒体 |
US5591535A (en) * | 1993-07-01 | 1997-01-07 | Dowa Mining Co., Ltd. | Ferromagnetic metal powder |
JP3439532B2 (ja) * | 1994-05-31 | 2003-08-25 | 富士写真フイルム株式会社 | 磁気記録媒体 |
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 |
-
1995
- 1995-10-13 JP JP26567395A patent/JP3473877B2/ja not_active Expired - Lifetime
-
1996
- 1996-10-04 US US08/725,244 patent/US5770302A/en not_active Expired - Lifetime
- 1996-10-10 DE DE69607717T patent/DE69607717T2/de not_active Expired - Lifetime
- 1996-10-10 EP EP96116248A patent/EP0768644B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0768644B1 (de) | 2000-04-12 |
DE69607717T2 (de) | 2000-08-03 |
JP3473877B2 (ja) | 2003-12-08 |
EP0768644A1 (de) | 1997-04-16 |
US5770302A (en) | 1998-06-23 |
JPH09106535A (ja) | 1997-04-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: FUJIFILM CORP., TOKIO/TOKYO, JP |