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1. 发明授权

US6040052A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US6040052A
公开(公告)日：2000-03-21
申请号：US58135
申请日：1998-04-10
申请人： Hiromichi Kanazawa , Kunihiro Ueda , Katsuaki Yanagiuchi , Tsunehiko Ikarashi , Masahide Kohno
发明人： Hiromichi Kanazawa , Kunihiro Ueda , Katsuaki Yanagiuchi , Tsunehiko Ikarashi , Masahide Kohno
IPC分类号： C23C14/08 , C23C16/50 , G11B5/64 , G11B5/66 , G11B5/72 , G11B5/725 , G11B5/84 , B32B9/00
CPC分类号： G11B5/8408 , G11B5/72 , G11B5/725 , Y10S428/90 , Y10T428/30
摘要： A magnetic recording (vapor deposition) film medium having improved friction characteristics, running durability, and still characteristics are provided. The magnetic recording thin film medium comprises a non-magnetic support having on at least one surface thereof a magnetic layer, a protective layer formed on the magnetic layer, and a lubricant layer formed on the protective layer, wherein the magnetic recording medium is obtained by that after forming the magnetic layer on the surface of the non-magnetic support conveyed along the surface of a cooling roll, a carbon-containing plasma polymerized film is formed on the magnetic layer as the protective layer, while conveying the non-magnetic support having the magnetic layer along the surface of a cooling roll, and after surface-treating the carbon-containing plasma polymerized film on the same cooling roll as the protective layer-forming roll or on a different cooling roll from the protective layer-forming roll without applying a bias voltage to the surface-treatment roll, whereby a double bond component of carbon and oxygen is incorporated in the surface of the carbon-containing plasma polymerized film at a ratio of from 1.4 to 7.5 atomic % to the whole carbon amount of the surface of the carbon-containing plasma polymerized film, and the lubricant layer made up of an ester of a fluorinated alcohol and a fatty acid is then formed on the carbon-containing plasma polymerized film.
摘要翻译：提供了具有改善的摩擦特性，运行耐久性和静止特性的磁记录（气相沉积）薄膜介质。磁记录薄膜介质包括在其至少一个表面上具有磁性层，形成在磁性层上的保护层和形成在保护层上的润滑层的非磁性载体，其中磁记录介质由在沿着冷却辊的表面输送的非磁性载体的表面上形成磁性层之后，在作为保护层的磁性层上形成含碳等离子体聚合膜，同时输送具有沿着冷却辊的表面的磁性层，并且在与保护层形成辊相同的冷却辊上或与保护层形成辊不同的冷却辊上表面处理含碳等离子体聚合膜，而不施加表面处理辊的偏置电压，由此将碳和氧的双键成分并入含碳等离子体的表面然后，形成以含碳等离子体聚合膜表面的全碳量为基准的1.4〜7.5原子％的比例的聚合膜，由氟化醇和脂肪酸的酯构成的润滑剂层在含碳等离子体聚合膜上。

2. 发明授权

US6042938A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US6042938A
公开(公告)日：2000-03-28
申请号：US992088
申请日：1997-12-17
申请人： Tsunehiko Ikarashi , Masahide Kohno , Shinji Miyazaki
发明人： Tsunehiko Ikarashi , Masahide Kohno , Shinji Miyazaki
IPC分类号： C09D175/04 , G11B5/72 , G11B5/735 , G11B5/68
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25
摘要： A magnetic recording medium includes a non-magnetic supporting substrate, and a magnetic layer on one surface thereof and a back coat layer on the other surface thereof, said back coat layer having a non-magnetic powder dispersed in a binder. The back coat layer contains carbon black and an inorganic powder as said non-magnetic powder. The carbon black contains a carbon black species having an average primary particle diameter of 40 to 70 nm, and the inorganic powder has an average primary particle diameter of 40 to 150 nm and a Mohs hardness of at least 3, with a weight ratio between said carbon black and said inorganic powder being 100:0.5 to 100:10. The binder comprises a phenoxy resin, a thermoplastic polyurethane resin having an amino group in a molecule thereof, and a polyisocyanate compound.
摘要翻译：磁记录介质包括非磁性支撑基板，在其一个表面上具有磁性层，在另一个表面上具有背涂层，所述背涂层具有分散在粘合剂中的非磁性粉末。背涂层含有炭黑和作为非磁性粉末的无机粉末。炭黑含有平均一次粒径为40〜70nm的碳黑物质，无机粉末的平均一次粒径为40〜150nm，莫氏硬度为3以上，重量比为炭黑，所述无机粉末为100:0.5〜100:10。粘合剂包含苯氧基树脂，分子中具有氨基的热塑性聚氨酯树脂和多异氰酸酯化合物。

3. 发明授权

US5443913A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5443913A
公开(公告)日：1995-08-22
申请号：US136281
申请日：1993-10-15
申请人： Masahide Kohno , Kazuhiro Kuroda , Yasushi Ishikawa , Hideki Sasaki , Yasufumi Takasugi , Tsunehiko Ikarashi , Osamu Inoue
发明人： Masahide Kohno , Kazuhiro Kuroda , Yasushi Ishikawa , Hideki Sasaki , Yasufumi Takasugi , Tsunehiko Ikarashi , Osamu Inoue
IPC分类号： C09D5/23 , G11B5/702 , G11B5/735 , G11B5/00
CPC分类号： G11B5/735 , G11B5/7022 , G11B5/7023 , G11B5/7026 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： In a magnetic recording medium comprising on a non-magnetic substrate a magnetic layer obtained by dispersing ferromagnetic powder in an electron beam-curable resin followed by electron beam curing or a backcoat layer obtained by curing an electron beam-curable resin with electron beams, a combination of an electron beam-curable vinyl chloride resin having a sulfur-containing polar group and an electron beam-curable urethane resin having a phosphorus-containing polar group is used as the electron beam-curable resin. This results in improvements in dispersibility, surface smoothness, and electromagnetic characteristics, as well as a lowering of error rate in high density digital recording. Storage property is good.
摘要翻译：在磁性记录介质中，在非磁性基板上形成通过将铁磁性粉末分散在电子束固化性树脂中后来进行电子束固化而获得的磁性层，或通过用电子束固化电子束固化树脂得到的背涂层，使用具有含硫极性基团的电子束固化性氯乙烯树脂和具有含磷极性基团的电子束固化性聚氨酯树脂的组合作为电子束固化性树脂。这导致分散性，表面光滑度和电磁特性的改善，以及高密度数字记录中的误差率的降低。储藏性好。

4. 发明授权

US06187724B1 Lubricant composition and magnetic recording medium using the same 失效
标题翻译：润滑剂组合物和使用其的磁记录介质
公开(公告)号：US06187724B1
公开(公告)日：2001-02-13
申请号：US09161385
申请日：1998-09-28
申请人： Tsunehiko Ikarashi , Koji Kobayashi , Hiromichi Kanazawa , Takahiro Hayashi , Takehiko Iritani
发明人： Tsunehiko Ikarashi , Koji Kobayashi , Hiromichi Kanazawa , Takahiro Hayashi , Takehiko Iritani
IPC分类号： C10M10534
CPC分类号： C10M105/32 , C10M105/54 , C10M111/02 , C10M2207/281 , C10M2207/282 , C10M2207/283 , C10M2207/286 , C10M2207/288 , C10M2207/34 , C10M2211/044 , C10M2211/06 , C10N2240/00 , C10N2240/22 , C10N2240/30 , C10N2240/50 , C10N2240/52 , C10N2240/54 , C10N2240/56 , C10N2240/58 , C10N2240/60 , C10N2240/66 , G11B5/725 , Y10S428/90
摘要： A lubricant composition comprising (A) a compound of the formula: R1—COO—R2 wherein R1 is a higher aliphatic hydrocarbon residue and R2 is an aliphatic hydrocarbon residue which may contain fluorine atom(s) and/or oxygen atom(s), and (B) a compound of the formula: wherein R3 is a higher aliphatic hydrocarbon residue; R4 and R5 are independently a hydrogen atom or an aliphatic hydrocarbon residue which may contain fluorine atom(s) and/or oxygen atom(s), gives a lubricant layer in a magnetic recording medium having good running durability, still life and weather resistance.
摘要翻译：一种润滑剂组合物，其包含（A）下式化合物：其中R 1是高级脂族烃残基，R 2是可以含有氟原子和/或氧原子的脂族烃残基，和（B）下式的化合物：其中R 3是高级脂族烃残基; R4和R5独立地是氢原子或可以含有氟原子和/或氧原子的脂族烃残基，在具有良好的运行耐久性，静态和耐候性的磁记录介质中产生润滑剂层。

5. 发明授权

US5698286A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5698286A
公开(公告)日：1997-12-16
申请号：US719205
申请日：1996-09-25
申请人： Tsunehiko Ikarashi , Yasufumi Takasugi , Tsutomu Aoyama , Akira Saitoh , Yuko Motegi , Takayoshi Kuwajima
发明人： Tsunehiko Ikarashi , Yasufumi Takasugi , Tsutomu Aoyama , Akira Saitoh , Yuko Motegi , Takayoshi Kuwajima
IPC分类号： G11B5/738 , G11B5/66 , B32B3/02 , G11B5/70
CPC分类号： G11B5/738 , Y10S428/90 , Y10T428/265 , Y10T428/2982
摘要： A magnetic layer is provided on a nonmagnetic base with a non-ferromagnetic layer interposed between them. Non-ferromagnetic particulate iron oxide is incorporated in the non-ferromagnetic layer. In addition to, or in place of, this iron oxide, non-structural carbon having a mean particle diameter of 10 to 60 nm, a specific surface area of 150 m2/g as measured by the BET method and a DBP oil absorption of 100 ml/100 g or less may be used. This makes it possible to achieve a magnetic recording medium having excellent surface properties and good-enough electromagnetic transducing characteristics.
摘要翻译：磁性层设置在非磁性基底上，其间插有非铁磁层。非铁磁性颗粒状氧化铁被结合在非铁磁性层中。除了或代替该氧化铁，通过BET法测定的平均粒径为10〜60nm，比表面积为150m 2 / g，DBP吸油量为100的非结构碳 ml / 100g以下。这使得可以实现具有优异的表面性能和足够好的电磁感应特性的磁记录介质。

6. 发明授权

US5792548A Magnetic recording medium having a magnetic layer and an intermediate layer of specified composition 失效
标题翻译：具有磁性层和具有特定组成的中间层的磁记录介质
公开(公告)号：US5792548A
公开(公告)日：1998-08-11
申请号：US610094
申请日：1996-02-29
申请人： Takayoshi Kuwajima , Tsunehiko Ikarashi , Yuko Motegi
发明人： Takayoshi Kuwajima , Tsunehiko Ikarashi , Yuko Motegi
IPC分类号： G11B5/66 , C09C1/48 , C09D5/23 , C09D7/12 , G11B5/70 , G11B5/738 , G11B5/704
CPC分类号： G11B5/70 , G11B5/738 , Y10S428/90 , Y10T428/24967 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording medium having an intermediate layer excellent in conductivity, surface properties and strength, and excellent in electromagnetic characteristics, physical properties, etc., which comprises a non-magnetic intermediate layer having a thickness of 0.5 .mu.m to 3.0 .mu.m formed on at least one surface of a non-magnetic support, and a magnetic layer formed on the intermediate layer, the magnetic layer being mainly composed of a ferromagnetic powder and a binder and having a thickness of 0.1 .mu.m to 0.5 .mu.m, in which said magnetic layer is formed on the intermediate layer at least in a dry state, and the intermediate layer comprises (A) an inorganic material having an average particle size of 10 nm to 50 nm and a Mohs' hardness of 7 or less, (B) an inorganic material having an average particle size of 100 nm to 500 nm and a Mohs' hardness of 9 or more, (C) carbon black, a lubricant and a binder.
摘要翻译：一种具有导电性，表面性质和强度优异，电磁特性，物理性能优异的中间层的磁记录介质，其包含厚度为0.5μm至3.0μm的非磁性中间层，其形成于非磁性载体的至少一个表面和形成在中间层上的磁性层，磁性层主要由铁磁粉末和粘合剂组成，厚度为0.1μm至0.5μm，其中所述至少在干燥状态下在中间层上形成磁性层，中间层包含（A）平均粒度为10nm〜50nm，莫氏硬度为7以下的无机材料，（B）平均粒径为100nm〜500nm，莫氏硬度为9以上的无机材料，（C）炭黑，润滑剂和粘合剂。

7. 发明授权

US5374478A Magnetic recording medium having a magnetic layer comprising magnetic powder, binder, and a single carbon black having a specified narrow particle size distribution 失效
标题翻译：具有磁性层的磁记录介质包括具有特定窄粒度分布的磁粉，粘合剂和单一炭黑
公开(公告)号：US5374478A
公开(公告)日：1994-12-20
申请号：US899904
申请日：1992-06-17
申请人： Yousuke Hitomi , Tsunehiko Ikarashi
发明人： Yousuke Hitomi , Tsunehiko Ikarashi
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/708 , G11B5/73 , G11B5/00
CPC分类号： G11B5/708 , Y10S428/90 , Y10T428/25 , Y10T428/265 , Y10T428/30
摘要： In order to reduce the coefficient of friction of a coated type magnetic recording medium and improve the running stability and electromagnetic conversion characteristics thereof, a carbon black having a mean primary particle diameter of 25 to 65 m.mu.m with the standard deviation .sigma. of the particle size distribution lying at 12 to 24 m.mu.m is incorporated in the magnetic layer.
摘要翻译：为了降低涂布型磁记录介质的摩擦系数，提高其运行稳定性和电磁转换特性，平均一次粒径为25〜65μm的炭黑与粒子的标准偏差σ 尺寸分布为12〜24μm，并入磁性层。

8. 发明授权

US4759954A Magnetic recording medium and preparation 失效
标题翻译：磁记录介质及配制
公开(公告)号：US4759954A
公开(公告)日：1988-07-26
申请号：US939033
申请日：1986-12-08
申请人： Yuichi Kubota , Yasufumi Takasugi , Yousuke Hitomi , Tsunehiko Ikarashi , Fuminori Tokuda
发明人： Yuichi Kubota , Yasufumi Takasugi , Yousuke Hitomi , Tsunehiko Ikarashi , Fuminori Tokuda
IPC分类号： G11B5/62 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/70 , G11B5/702 , G11B5/71 , G11B5/72 , G11B5/84 , G11B5/845 , G11B5/82
CPC分类号： G11B5/71 , G11B5/7026 , G11B5/845 , Y10S428/90 , Y10T428/249953 , Y10T428/249955
摘要： In a magnetic recording medium comprising a substrate and a magnetic layer thereon, the magnetic layer is formed by coating a composition of a binder, preferably radiation-curable binder and a needle magnetic material, passing the coating through a magnetic field to forcedly re-orient the magnetic particles to form pores having an average pore area of 6.times.10.sup.-5 to 7.times.10.sup.-1 .mu.m.sup.2, and curing the coating, thereby minimizing output fluctuation and improving durability. Preferably lubricant is present in the pores.
摘要翻译：在其上包括基底和磁性层的磁记录介质中，通过涂覆粘合剂组合物，优选可辐射固化的粘合剂和针状磁性材料，使涂层通过磁场强制重新定向，形成磁性层磁性颗粒形成平均孔面积为6×10 -5至7×10 -1 m 2的孔，并固化涂层，从而最小化输出波动并提高耐久性。润滑剂优选存在于孔中。

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