DE60314242D1 - Pulver für die unterschicht eines magnetaufzeichnungsmediums des beschichtungstyps und magnetisches aufzeichnungsmedium damit - Google Patents
Pulver für die unterschicht eines magnetaufzeichnungsmediums des beschichtungstyps und magnetisches aufzeichnungsmedium damitInfo
- Publication number
- DE60314242D1 DE60314242D1 DE60314242T DE60314242T DE60314242D1 DE 60314242 D1 DE60314242 D1 DE 60314242D1 DE 60314242 T DE60314242 T DE 60314242T DE 60314242 T DE60314242 T DE 60314242T DE 60314242 D1 DE60314242 D1 DE 60314242D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- tagming
- powder
- layer
- medium
- 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
- G11B5/73—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
- 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.]
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002100797 | 2002-04-03 | ||
JP2002100797 | 2002-04-03 | ||
PCT/JP2003/004215 WO2003088219A1 (fr) | 2002-04-03 | 2003-04-02 | Poudre pour sous-couche de support d'enregistrement magnetique de type a revetement et support d'enregistrement magnetique contenant ladite poudre |
Publications (2)
Publication Number | Publication Date |
---|---|
DE60314242D1 true DE60314242D1 (de) | 2007-07-19 |
DE60314242T2 DE60314242T2 (de) | 2008-02-07 |
Family
ID=29241495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60314242T Expired - Lifetime DE60314242T2 (de) | 2002-04-03 | 2003-04-02 | Pulver für die unterschicht eines magnetaufzeichnungsmediums des beschichtungstyps und magnetisches aufzeichnungsmedium damit |
Country Status (5)
Country | Link |
---|---|
US (1) | US7357997B2 (de) |
EP (1) | EP1492089B1 (de) |
CN (1) | CN100359568C (de) |
DE (1) | DE60314242T2 (de) |
WO (1) | WO2003088219A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7238438B2 (en) * | 2002-04-03 | 2007-07-03 | Dowa Mining Co., Ltd. | Powder for underlayer of coating-type magnetic recording medium |
US7425378B2 (en) * | 2004-07-26 | 2008-09-16 | Tdk Corporation | Magnetic recording medium |
Family Cites Families (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0693297B2 (ja) | 1987-01-30 | 1994-11-16 | 富士写真フイルム株式会社 | 磁気記録媒体 |
US5069983A (en) * | 1988-12-06 | 1991-12-03 | Nihon Shinku Gijutsu Kabushiki Kaisha | Magnetic recording member |
DE68923544T2 (de) * | 1988-12-29 | 1996-03-28 | Toda Kogyo Corp | Magnetische Eisenoxydteilchen und Verfahren zu ihrer Herstellung. |
DE3912976A1 (de) * | 1989-04-20 | 1990-10-25 | Basf Ag | Nadelfoermige, kobaltmodifizierte eisenoxide und verfahren zu ihrer herstellung |
JPH04167225A (ja) | 1990-10-31 | 1992-06-15 | Victor Co Of Japan Ltd | 磁気記録媒体 |
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 |
JP3396821B2 (ja) | 1992-10-13 | 2003-04-14 | コニカ株式会社 | 磁気記録媒体 |
JP2946262B2 (ja) | 1992-10-22 | 1999-09-06 | 富士写真フイルム株式会社 | 磁気記録媒体 |
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 |
US5594732A (en) * | 1995-03-03 | 1997-01-14 | Intecom, Incorporated | Bridging and signalling subsystems and methods for private and hybrid communications systems including multimedia systems |
US5600366A (en) * | 1995-03-22 | 1997-02-04 | Npb Partners, Ltd. | Methods and apparatus for digital advertisement insertion in video programming |
JPH0922524A (ja) * | 1995-07-06 | 1997-01-21 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
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 |
JP3838693B2 (ja) * | 1996-03-21 | 2006-10-25 | 同和鉱業株式会社 | 塗布型磁気記録媒体の下地層用粉末 |
JP4139873B2 (ja) * | 1996-08-05 | 2008-08-27 | Dowaエレクトロニクス株式会社 | 塗布型磁気記録媒体の下層用粉末 |
US6332153B1 (en) * | 1996-07-31 | 2001-12-18 | Vocaltec Communications Ltd. | Apparatus and method for multi-station conferencing |
US5917830A (en) * | 1996-10-18 | 1999-06-29 | General Instrument Corporation | Splicing compressed packetized digital video streams |
KR100232164B1 (ko) * | 1997-02-05 | 1999-12-01 | 구자홍 | 트랜스포트 스트림의 다중.분리장치 |
JP3903139B2 (ja) * | 1997-06-05 | 2007-04-11 | Dowaエレクトロニクス株式会社 | 塗布型磁気記録媒体の下層用粉末 |
US6063490A (en) * | 1997-08-19 | 2000-05-16 | Toda Kogyo Corporation | Magnetic recording medium comprising non-magnetic acicular particles containing mainly iron and having titanium dispersed therein |
US6803104B2 (en) * | 1997-12-12 | 2004-10-12 | Toda Kogyo Corporation | Magnetic recording medium, non-magnetic acicular black iron-based composite particles and process for producing the particles |
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 |
US6506264B1 (en) * | 1998-12-18 | 2003-01-14 | Dowa Mining Co., Ltd. | Ferromagnetic powder |
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 |
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 |
US6771644B1 (en) * | 1999-09-17 | 2004-08-03 | Lucent Technologies Inc. | Program insertion in real time IP multicast |
US6771657B1 (en) * | 1999-12-09 | 2004-08-03 | General Instrument Corporation | Non real-time delivery of MPEG-2 programs via an MPEG-2 transport stream |
JP4474557B2 (ja) * | 1999-12-15 | 2010-06-09 | Dowaエレクトロニクス株式会社 | 塗布型磁気記録媒体の下層用粉末の製造法 |
US6505169B1 (en) * | 2000-01-26 | 2003-01-07 | At&T Corp. | Method for adaptive ad insertion in streaming multimedia content |
JP2001297428A (ja) * | 2000-02-10 | 2001-10-26 | Tdk Corp | 磁気記録媒体およびその製造方法 |
JP2001243619A (ja) * | 2000-02-28 | 2001-09-07 | 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 |
US6534168B2 (en) * | 2000-08-25 | 2003-03-18 | Fuji Photo Film Co., Ltd. | Magnetic recording medium comprising a lower layer containing specific flat acicular α-iron oxide powder |
JP2002074646A (ja) * | 2000-08-29 | 2002-03-15 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
US7844489B2 (en) * | 2000-10-30 | 2010-11-30 | Buyerleverage | Buyer-driven targeting of purchasing entities |
JP4557117B2 (ja) * | 2001-04-27 | 2010-10-06 | 戸田工業株式会社 | 磁気記録媒体用表面改質磁性粒子粉末、磁気記録媒体用表面改質フィラー材及び磁気記録媒体の非磁性下地層用表面改質非磁性粒子粉末並びに磁気記録媒体 |
AU2002314941A1 (en) * | 2001-06-06 | 2002-12-16 | Complete Tv, Llc | Centralized aggregation of broadcast television programming and multi-market digital delivery thereof over interconnected terrestrial fiber optic networks |
US6947417B2 (en) * | 2001-06-29 | 2005-09-20 | Ip Unity | Method and system for providing media services |
DE602004016511D1 (de) * | 2003-07-04 | 2008-10-23 | Dowa Electronics Materials Co | Pulver für die untere schicht des anwendungstyps eines geschichteten magnetischen aufzeichnungsmediums und magnetisches aufzeichnungsmedium damit |
-
2003
- 2003-04-02 WO PCT/JP2003/004215 patent/WO2003088219A1/ja active IP Right Grant
- 2003-04-02 US US10/507,915 patent/US7357997B2/en not_active Expired - Fee Related
- 2003-04-02 DE DE60314242T patent/DE60314242T2/de not_active Expired - Lifetime
- 2003-04-02 CN CNB038068370A patent/CN100359568C/zh not_active Expired - Fee Related
- 2003-04-02 EP EP03746417A patent/EP1492089B1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7357997B2 (en) | 2008-04-15 |
EP1492089B1 (de) | 2007-06-06 |
CN1643577A (zh) | 2005-07-20 |
DE60314242T2 (de) | 2008-02-07 |
EP1492089A1 (de) | 2004-12-29 |
US20050158586A1 (en) | 2005-07-21 |
EP1492089A4 (de) | 2005-04-13 |
WO2003088219A1 (fr) | 2003-10-23 |
CN100359568C (zh) | 2008-01-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |