CN100359568C - 涂敷型磁记录媒体的底层用粉末与使用该粉末的磁记录媒体 - Google Patents
涂敷型磁记录媒体的底层用粉末与使用该粉末的磁记录媒体 Download PDFInfo
- Publication number
- CN100359568C CN100359568C CNB038068370A CN03806837A CN100359568C CN 100359568 C CN100359568 C CN 100359568C CN B038068370 A CNB038068370 A CN B038068370A CN 03806837 A CN03806837 A CN 03806837A CN 100359568 C CN100359568 C CN 100359568C
- Authority
- CN
- China
- Prior art keywords
- powder
- coating
- recording medium
- magnetic recording
- feooh
- 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 - Fee Related
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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.]
Landscapes
- Magnetic Record Carriers (AREA)
- Compounds Of Iron (AREA)
Abstract
Description
氢氧化铁的表面处理剂的种类与量 | 焙烧温度 | 氧化铁中的主要含有成分 | 粉体特性 | 涂料粘度 | 带的评价 | ||||||||||||||||||
P | Y | Al | Si | ℃ | P | Y | Al | Si | Na | 平均长轴长 | 平均短轴长 | 平均轴比 | 比表面积(BET) | 粉体pH值 | 吸附特性 | 表面性质 | 带耐久性 | ||||||
元素/FeOOH%(wt) | 元素/氧化铁%(wt) | nm | nm | m<sup>2</sup>/g | 硬脂酸吸附量mg/m<sup>2</sup> | MR吸附量mg/<sup>2</sup> | UR吸附量mg/m<sup>2</sup> | mPa·s | 表面粗糙度 | 光泽% | 钢球滑动 | ||||||||||||
伤幅μm | 通过次数 | ||||||||||||||||||||||
比较例1 | - | - | 1 | - | 600 | - | - | 0.95 | - | 0.011 | 85 | 16 | 5.3 | 57 | 8.4 | 1.7 | 1.1 | 2.2 | 177 | 380 | 138 | 210 | 620 |
比较例2 | - | - | - | 1 | 600 | - | - | - | 0.71 | 0.012 | 90 | 16 | 5.6 | 101 | 7.8 | 0.6 | 0.6 | 1.3 | 547 | 330 | 146 | 230 | 480 |
比较例3 | - | 1 | - | - | 600 | - | 1.05 | - | - | 0.011 | 85 | 16 | 5.3 | 62 | 9.3 | 1.6 | 1.3 | 2.4 | 360 | 355 | 160 | 160 | 460 |
比较例4 | - | - | - | - | 600 | - | - | - | - | 0.011 | 90 | 20 | 4.5 | 46 | 8.0 | 2.1 | 1.1 | 2.1 | 85 | 440 | 150 | 420 | 140 |
实施例1 | 1.5 | 1 | - | - | 600 | 1.08 | 1.05 | - | - | 0.011 | 90 | 15 | 6.0 | 59 | 5.8 | 0.7 | 1.6 | 2.6 | 320 | 170 | 195 | 110 | 1020 |
实施例2 | 1.5 | - | - | - | 600 | 1.14 | - | - | - | 0.012 | 85 | 16 | 5.3 | 57 | 5.4 | 0.8 | 1.0 | 2.4 | 410 | 260 | 176 | 130 | 850 |
多层结构的磁带 | 所使用的底层用粉末 | 光面平滑性(粗糙度)() | 电磁变换特性 | 带耐久性(钢球滑动通过次数) | |
输出 | C/N | ||||
实施例3 | 实施例1的粉末 | 95 | +0.9dB | +2.2dB | 1340次 |
比较例5 | 比较例1的粉末 | 220 | 0dB | 0dB | 670次 |
氢氧化铁的表面处理剂的种类与量 | 焙烧温度 | 氧化铁中的主要含有成分 | 粉体特性 | 涂料粘度 | 带的评价 | |||||||||||||||||||||||
P | Y | Al | Si | ℃ | P | Y | Al | Si | Na | 平均长轴长 | 平均短轴长 | 平均轴比 | 比表面积(BET) | 粉体pH值 | 吸附特性 | 表面性质 | 带耐久性 | |||||||||||
元素/FeOOH%(wt) | 元素/氧化铁%(wt) | nm | nm | m<sup>2</sup>/g | 硬脂酸吸附量mg/m<sup>2</sup> | MR吸附量mg/m<sup>2</sup> | UR吸附量mg/m<sup>2</sup> | mPa·s | 表面粗糙度 | 光泽% | 钢球滑动 | |||||||||||||||||
伤幅μm | 通过次数 | |||||||||||||||||||||||||||
实施例4 | 1.5 | 1 | - | - | 600 | 1.10 | 1.05 | - | - | 0.011 | 23 | 6 | 3.3 | 98 | 5.7 | 0.6 | 1.6 | 2.5 | 730 | 170 | 190 | 120 | 1000 | |||||
参比例5 | 1.5 | 1 | - | - | 600 | 1.09 | 1.04 | - | - | 0.011 | 195 | 30 | 6.6 | 30 | 5.9 | 0.9 | 1.4 | 2.6 | 270 | 260 | 182 | 100 | 1050 | |||||
实施例6 | 7.8 | 1 | - | - | 600 | 4.90 | 1.05 | - | - | 0.011 | 95 | 14 | 6.8 | 94 | 32 | 0.3 | 1.4 | 2.5 | 640 | 220 | 180 | 100 | 1040 | |||||
实施例7 | 5.4 | 1 | - | - | 600 | 3.20 | 1.05 | - | - | 0.011 | 93 | 14 | 6.6 | 73 | 4.2 | 0.4 | 1.5 | 2.5 | 400 | 160 | 195 | 105 | 1100 | |||||
实施例8 | 0.8 | 1 | - | - | 600 | 0.52 | 1.04 | - | - | 0.011 | 90 | 15 | 6.0 | 58 | 6.2 | 1.1 | 1.5 | 2.4 | 310 | 160 | 185 | 120 | 1005 | |||||
实施例9 | 0.4 | 1 | - | - | 600 | 0.21 | 1.04 | - | - | 0.011 | 85 | 16 | 5.3 | 59 | 6.4 | 1.2 | 1.6 | 2.5 | 330 | 220 | 180 | 125 | 970 | |||||
实施例10 | 1.5 | 0.2 | - | - | 600 | 1.08 | 0.23 | - | - | 0.011 | 90 | 15 | 6.0 | 59 | 5.8 | 0.8 | 1 | 2.4 | 320 | 200 | 185 | 120 | 960 |
实施例11 | 1.5 | 8 | - | - | 600 | 1.08 | 8.01 | - | - | 0.011 | 90 | 15 | 6.0 | 64 | 5.7 | 0.7 | 1.5 | 2.5 | 340 | 190 | 185 | 115 | 1010 |
实施例12 | S:1.5 | 1 | - | 600 | S:1.00 | 1.03 | - | - | 0.011 | 80 | 18 | 4.4 | 48 | 5.1 | 0.4 | 1.6 | 2.6 | 260 | 280 | 170 | 160 | 850 | |
实施例13 | Cl:1.5 | 1 | - | 600 | Cl:1.1 | 1.04 | - | - | 0.011 | 75 | 20 | 3.8 | 45 | 4.7 | 0.3 | 1.6 | 2.6 | 250 | 290 | 170 | 160 | 880 | |
实施例14 | 2.2 | 1 | - | 590 | 1.50 | 1.01 | - | - | 0.011 | 110 | 28 | 4.0 | 71 | 6.3 | 0.7 | 0.9 | 1.7 | 50 | 220 | 170 | 110 | 1020 | |
实施例15 | 1.5 | 1 | - | 590 | 0.90 | 1.02 | - | - | 0.011 | 110 | 28 | 4.0 | 66 | 6.9 | 0.9 | 0.9 | 1.7 | 45 | 230 | 170 | 115 | 990 | |
比较例6 | 1.5 | 1 | - | 600 | 1.09 | 1.05 | - | - | 0.011 | 15 | 5 | 2.0 | 112 | 5.9 | 0.6 | 15 | 2.5 | 960 | 不能制带 | ||||
比较例7 | 1.5 | 1 | - | 600 | 1.10 | 1.06 | - | - | 0.011 | 246 | 32 | 7.8 | 22 | 5.8 | 0.9 | 1.6 | 2.6 | 260 | 400 | 120 | 120 | 1010 | |
比较例8 | 8.8 | 1 | - | 600 | 5.40 | 1.04 | - | - | 0.011 | 95 | 14 | 6.8 | 104 | 2.8 | 0.2 | 1.4 | 2.6 | 700 | 380 | 160 | 90 | 1080 | |
比较例9 | 1.5 | 15 | - | 600 | 1.08 | 14.9 | - | - | 0.011 | 90 | 15 | 6.0 | 75 | 5.6 | 0.6 | 1.5 | 2.6 | 370 | 270 | 160 | 120 | 990 | |
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP100797/2002 | 2002-04-03 | ||
JP2002100797 | 2002-04-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1643577A CN1643577A (zh) | 2005-07-20 |
CN100359568C true CN100359568C (zh) | 2008-01-02 |
Family
ID=29241495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB038068370A Expired - Fee Related CN100359568C (zh) | 2002-04-03 | 2003-04-02 | 涂敷型磁记录媒体的底层用粉末与使用该粉末的磁记录媒体 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7357997B2 (zh) |
EP (1) | EP1492089B1 (zh) |
CN (1) | CN100359568C (zh) |
DE (1) | DE60314242T2 (zh) |
WO (1) | WO2003088219A1 (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60314383T2 (de) * | 2002-04-03 | 2008-02-21 | Dowa Mining Co., Ltd. | Pulver für die unterschicht eines magnetaufzeichnungsmediums des beschichtungstyps |
US7425378B2 (en) * | 2004-07-26 | 2008-09-16 | Tdk Corporation | Magnetic recording medium |
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JPH0660362A (ja) * | 1992-08-07 | 1994-03-04 | Toda Kogyo Corp | 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 |
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JP2001243619A (ja) * | 2000-02-28 | 2001-09-07 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
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 |
JP2001344738A (ja) * | 2000-05-26 | 2001-12-14 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
JP2002074646A (ja) * | 2000-08-29 | 2002-03-15 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
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-
2003
- 2003-04-02 CN CNB038068370A patent/CN100359568C/zh not_active Expired - Fee Related
- 2003-04-02 WO PCT/JP2003/004215 patent/WO2003088219A1/ja active IP Right Grant
- 2003-04-02 EP EP03746417A patent/EP1492089B1/en not_active Expired - Fee Related
- 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
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0660362A (ja) * | 1992-08-07 | 1994-03-04 | Toda Kogyo Corp | 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 |
JPH11273056A (ja) * | 1998-03-25 | 1999-10-08 | Tdk Corp | 磁気記録媒体及びその製造方法 |
CN1285078A (zh) * | 1998-12-18 | 2001-02-21 | 同和矿业株式会社 | 铁磁性粉末 |
JP2000327335A (ja) * | 1999-05-24 | 2000-11-28 | Toda Kogyo Corp | 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 |
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 |
JP2002074646A (ja) * | 2000-08-29 | 2002-03-15 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
Also Published As
Publication number | Publication date |
---|---|
WO2003088219A1 (fr) | 2003-10-23 |
DE60314242D1 (de) | 2007-07-19 |
EP1492089A4 (en) | 2005-04-13 |
CN1643577A (zh) | 2005-07-20 |
DE60314242T2 (de) | 2008-02-07 |
US20050158586A1 (en) | 2005-07-21 |
EP1492089B1 (en) | 2007-06-06 |
US7357997B2 (en) | 2008-04-15 |
EP1492089A1 (en) | 2004-12-29 |
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