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公开(公告)号：US4400444A
公开(公告)日：1983-08-23
申请号：US384604
申请日：1982-06-03
IPC分类号： G11B5/66 , C08L67/02 , G11B5/64 , G11B5/73 , G11B5/78 , G11B5/85 , G11B5/851 , H01F41/20 , H01F10/02
CPC分类号： G11B5/851 , H01F41/20 , Y10S428/90
摘要： A magnetic recording medium having a ferromagnetic layer formed by oblique vapor deposition wherein the residual magnetic flux density in the width direction of the recording medium is larger than the residual magnetic flux density in the longitudinal direction shows the SN ratio in a practical level at recording in the width direction.
摘要翻译： 具有通过倾斜气相沉积形成的铁磁层的磁记录介质，其中记录介质的宽度方向上的剩余磁通密度大于纵向方向上的剩余磁通密度，示出了记录时实际水平的SN比 宽度方向。
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公开(公告)号：US4387136A
公开(公告)日：1983-06-07
申请号：US246672
申请日：1981-03-23
申请人： Seitoku Saito , Fumio Maruta , Toshiaki Izumi , Hiroshi Sugihara
发明人： Seitoku Saito , Fumio Maruta , Toshiaki Izumi , Hiroshi Sugihara
CPC分类号： G11B5/66 , G11B5/851 , H01F41/20 , Y10S428/90 , Y10T428/256
摘要： A thin metallic layer type magnetic recording medium having thin metallic layers in a structure comprises a layer in which a tilt angle of a metallic particle direction to the normal line to said substrate gradually increases depending upon an increase of a distance from said substrate; and a layer in which a tilt angle of a metallic particle direction to the normal line to said substrate gradually decreases depending upon an increase of a distance from said substrate.
摘要翻译： 在结构中具有薄金属层的薄金属层型磁记录介质包括其中金属颗粒方向相对于所述基板的法线的倾斜角随着距离所述基板的距离的增加而逐渐增加的层; 并且根据与所述基板的距离的增加，金属颗粒方向相对于所述基板的法线的倾斜角度逐渐减小的层。
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3.发明授权Magnetic recording medium with stepwise orientation of deposited metallic particles 失效具有沉积金属颗粒逐步取向的磁记录介质
公开(公告)号：US4371590A
公开(公告)日：1983-02-01
申请号：US213357
申请日：1980-12-05
申请人： Toshiaki Izumi , Seitoku Saito , Fumio Maruta , Minoru Kameya
发明人： Toshiaki Izumi , Seitoku Saito , Fumio Maruta , Minoru Kameya
CPC分类号： G11B5/66 , Y10S428/928 , Y10T428/12049 , Y10T428/12076 , Y10T428/12465
摘要： A magnetic recording medium having multi-layer structure of two or more thin metallic layers on a substrate. The orientations of metallic particles are different for each of said thin metallic layers.
摘要翻译： 一种在基板上具有两层或多层薄金属层的多层结构的磁记录介质。 金属颗粒的取向对于每个所述薄金属层是不同的。
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公开(公告)号：US4889767A
公开(公告)日：1989-12-26
申请号：US41489
申请日：1987-04-23
IPC分类号： G11B5/72
CPC分类号： G11B5/72 , G11B5/722 , Y10S428/90 , Y10T428/265
摘要： In a magnetic recording medium wherein a metal thin film magnetic layer and a topcoat layer of an organic fluorine compound are formed on a nonmagnetic substrate, the surface of the magnetic layer is plasma treated or plasma oxidized, enhancing the bond between the adjoining layers. A protective film of carbon may be disposed between the magnetic layer and the topcoat, with the surface of the protective carbon film plasma treated. Instead, a protective film of plasma-polymerized organometallic compound may be used.
摘要翻译： 在非磁性基板上形成金属薄膜磁性层和有机氟化合物的顶涂层的磁记录介质中，磁性层的表面被等离子体处理或等离子体氧化，从而增强邻接层之间的结合。 可以在保护性碳膜等离子体表面处理磁性层和顶涂层之间设置碳保护膜。 可以使用等离子体聚合的有机金属化合物的保护膜。
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公开(公告)号：US5069967A
公开(公告)日：1991-12-03
申请号：US387827
申请日：1989-08-01
IPC分类号： G11B5/72
CPC分类号： G11B5/722 , Y10S428/90 , Y10T428/24355 , Y10T428/265 , Y10T428/30
摘要： In a magnetic recording medium wherein a metal thin film magnetic layer and an overcoat are formed on a nonmagnetic substrate, durability is improved when the overcoat comprises a plasma-polymerized film and a topcoat of an organic fluorine compound; a plasma-polymerized film, a protective carbon film, and a topcoat of an organic fluorine compound; a plasma-polymerized film containing C, F and H; or a plasma-polymerized organometallic film and a fluorine or silicon-containing topcoat. Oxidation of the upper surface of the magnetic layer with a plasma is also effective.
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公开(公告)号：US4302510A
公开(公告)日：1981-11-24
申请号：US143895
申请日：1980-04-25
申请人： Shinji Umeki , Kazuaki Onuki , Fumio Maruta
发明人： Shinji Umeki , Kazuaki Onuki , Fumio Maruta
CPC分类号： G11B5/70694 , Y10S428/90 , Y10T428/257 , Y10T428/2991
摘要： A magnetic recording medium having more than 550 Oersted of a coercive force, less than 1.8 of a ratio of a coercive force at -196.degree. C. to a coercive force at 25.degree. C., less than 1.0 wt. % of a content of Fe.sup.2+ is prepared by incorporating a magnetic powder obtained by dispersing acicular .gamma.-Fe.sub.2 O.sub.3 in an aqueous solution of a cobalt salt and reducing it with a reducing agent to deposit a cobalt compound on the acicular .gamma.-Fe.sub.2 O.sub.3.
摘要翻译： 具有超过550矫顽力奥斯特的磁记录介质，在-196℃下的矫顽力与矫顽力在25℃下的比值小于1.8，小于1.0重量％。 通过将针状γ-Fe 2 O 3分散在钴盐水溶液中而得到的磁性粉末并用还原剂还原，在针状γ-Fe 2 O 3上析出钴化合物，可以制备Fe2 +含量的％。
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公开(公告)号：US5080971A
公开(公告)日：1992-01-14
申请号：US388061
申请日：1989-08-01
IPC分类号： G11B5/72
CPC分类号： G11B5/722 , Y10S428/90 , Y10T428/24355 , Y10T428/265 , Y10T428/30
摘要： In a magnetic recording medium wherein a metal thin film magnetic layer and an overcoat are formed on a nonmagnetic substrate, durability is improved when the overcoat comprises a plasma-polymerized film and a topcoat of an organic fluorine compound; a plasma-polymerized film, a protective carbon film, and a topcoat of an organic fluorine compound; a plasma-polymerized film containing C, F and H; or a plasma-polymerized organometallic film and a fluorine or silicon-containing topcoat. Oxidation of the upper surface of the magnetic layer with a plasma is also effective.
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公开(公告)号：US4816334A
公开(公告)日：1989-03-28
申请号：US33617
申请日：1987-04-03
IPC分类号： G11B5/66 , C09D171/02 , C10M105/50 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725 , G11B5/73 , G11B5/738 , G11B5/84 , G11B5/71
CPC分类号： G11B5/72 , Y10S428/90 , Y10T428/265 , Y10T428/30 , Y10T428/3154 , Y10T428/31544
摘要： In a magnetic recording medium wherein a metal thin film magnetic layer, a protective film or carbon, and a topcoat layer are formed on a rigid substrate in this order, the topcoat layer is from an organic fluorine compound by gas phase deposition.
摘要翻译： 在其中在刚性基板上依次形成金属薄膜磁性层，保护膜或碳和顶涂层的磁记录介质中，顶涂层是通过气相沉积从有机氟化合物。
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公开(公告)号：US4880687A
公开(公告)日：1989-11-14
申请号：US46317
申请日：1987-05-06
IPC分类号： G11B5/72
CPC分类号： G11B5/722 , Y10S428/90 , Y10T428/24355 , Y10T428/265 , Y10T428/30
摘要： In a magnetic recording medium wherein a metal thin film magnetic layer and an overcoat are formed on a nonmagnetic substrate, durability is improved when the overcoat comprises a plasma-polymerized film and a topcoat of an organic fluorine compound; a plasma-polymerized film, a protective carbon film, and a topcoat of an organic fluorine compound; a plasma-polymerized film containing C, F and H; or a plasma-polymerized organometallic film and a fluorine or silicon-containing topcoat. Oxidation of the upper surface of the magnetic layer with a plasma is also effective.
摘要翻译： 在其中在非磁性基板上形成金属薄膜磁性层和外涂层的磁记录介质中，当外涂层包含等离子体聚合膜和有机氟化合物的外涂层时，耐久性得到改善; 等离子体聚合膜，保护性碳膜和有机氟化合物的外涂层; 含有C，F和H的等离子体聚合膜; 或等离子体聚合的有机金属膜和含氟或含硅的顶涂层。 用等离子体氧化磁性层的上表面也是有效的。
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公开(公告)号：US4452864A
公开(公告)日：1984-06-05
申请号：US418610
申请日：1982-09-16
申请人： Yoshimi Kitahara , Kazumasa Fukuda , Fumio Maruta
发明人： Yoshimi Kitahara , Kazumasa Fukuda , Fumio Maruta
CPC分类号： G11B5/64 , Y10S428/90 , Y10S428/928 , Y10T428/12465 , Y10T428/12778 , Y10T428/265 , Y10T428/31678
摘要： A magnetic recording medium comprises a substrate and a magnetic recording layer formed on the substrate and having an easy magnetization axis in the perpendicular direction to the surface of the medium, characterized in that said magnetic recording layer is composed of from 75 to 90% by weight of Co, at most 15% by weight of Mo and the rest being V and unavoidable impurities.
摘要翻译： 磁记录介质包括基板和形成在基板上的磁记录层，并且在与介质表面垂直的方向上具有容易的磁化轴，其特征在于，所述磁记录层由75至90重量％ 的Co，至多15重量％的Mo，其余为V和不可避免的杂质。
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