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1. 发明授权

US06815055B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US06815055B2
公开(公告)日：2004-11-09
申请号：US10196418
申请日：2002-07-17
申请人： Satoshi Matsubaguchi , Yuichiro Murayama , Nobuyoshi Asada
发明人： Satoshi Matsubaguchi , Yuichiro Murayama , Nobuyoshi Asada
IPC分类号： G11B571
CPC分类号： G11B5/71 , G11B5/7021 , Y10T428/31609
摘要： A magnetic recording medium is disclosed, comprising a support having thereon a lower layer containing a nonmagnetic powder or a ferromagnetic powder dispersed in a binder, and at least a magnetic layer containing a ferromagnetic powder dispersed in a binder provided on the lower layer, wherein the binder contains a polyurethane resin obtained from a polyester polyol comprising a specific diol, a chain extending agent and an organic diisocyanate, and the magnetic layer surface has a C/Fe peak ratio of from 7 to 11.
摘要翻译：公开了一种磁记录介质，包括其上具有包含分散在粘合剂中的非磁性粉末或铁磁粉末的下层的支撑体，以及至少包含分散在设置在下层上的粘合剂中的铁磁性粉末的磁性层，其中，粘合剂含有由包含特定二醇，扩链剂和有机二异氰酸酯的聚酯多元醇获得的聚氨酯树脂，并且磁性层表面的C / Fe峰比率为7至11。

2. 发明授权

US06780513B2 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US06780513B2
公开(公告)日：2004-08-24
申请号：US10323650
申请日：2002-12-20
申请人： Takahiro Hayashi , Kunihiro Ueda , Kenji Shirasuna
发明人： Takahiro Hayashi , Kunihiro Ueda , Kenji Shirasuna
IPC分类号： G11B571
CPC分类号： G11B5/725
摘要： The present invention provides a metal thin film type magnetic recording medium having improved tracking stability and friction stability, by improving the lubricating layer in consideration of the state of forming the lubricating layer in view of the distribution of the lubricant. The magnetic recording medium according to the present invention at least has, in turn, a metal magnetic layer, a protective layer and a lubricating layer on one surface of a nonmagnetic base. The covering ratio of a surface of the lubricating layer with the lubricant is 65-75%. The lubricating layer is produced by applying a mixture of solvents containing at least three solvents selected from three groups, that is from at least one from group (1): ketone solvents having a boiling point of 40-130° C., at least one from group (2): aliphatic hydrocarbon solvents having 4 carbons-10 carbons, and at least one from group (3) alcoholic solvents having equal or less than 6 carbons, the mixture ratio of these solvents of respective groups being preferably selected to be: (1) ketone solvents 5-20% wt.; (2) aliphatic hydrocarbon solvents 10-40% wt.; and (3) alcoholic solvents 40-80% wt.
摘要翻译：本发明提供了一种具有改进的跟踪稳定性和摩擦稳定性的金属薄膜型磁记录介质，考虑到润滑剂的分布，考虑到形成润滑层的状态来改进润滑层。根据本发明至少在非磁性基体的一个表面上具有金属磁性层，保护层和润滑层。润滑剂表面与润滑剂的比例为65-75％。润滑层是通过将含有至少三种选自三组的溶剂的混合物（即来自组中的至少一种）（1）：沸点为40-130℃的酮溶剂，至少一种来自基团（2）：具有4个碳原子数为10的碳的脂族烃溶剂和至少一种（3）具有等于或少于6个碳原子的醇溶剂，各基团的这些溶剂的混合比优选选择为：（1）酮溶剂5-20％wt。（2）脂肪族烃溶剂10-40％wt。和（3）醇溶剂40-80重量％

3. 发明授权

US06797374B2 Magnetic read/write system and magnetic recording medium 有权
标题翻译：磁读/写系统和磁记录介质
公开(公告)号：US06797374B2
公开(公告)日：2004-09-28
申请号：US10622740
申请日：2003-07-21
申请人： Takashi Horai , Hideki Sasaki , Hiroyuki Yamada
发明人： Takashi Horai , Hideki Sasaki , Hiroyuki Yamada
IPC分类号： G11B571
CPC分类号： G11B5/78 , G11B5/00 , G11B5/00817 , G11B5/71 , G11B5/738 , G11B2005/0016 , Y10T428/265
摘要： A novel magnetic read/write system, in which a fixed MR head serves to read magnetically recorded data from a magnetic recording medium as it operates at a relative speed of 2.0 to 5.0 m/s with respect to the magnetic recording medium comprising a non-magnetic support and a magnetic layer. A fatty acid ester represented by general formula (I): where R1 is a hydrocarbon having 4 or less carbons, and R2 is a straight-chain hydrocarbon having 12 or more carbons, exists between a read element of the MR head and the magnetic layer. This magnetic read/write system exhibits improved adherence to heads, running durability, and wear resistance of the tape in low temperature conditions as well as at room temperature.
摘要翻译：一种新颖的磁读/写系统，其中固定MR磁头用于从相对于包括非磁性磁记录介质的磁记录介质以相对速度2.0至5.0m / s的速度操作磁记录介质读取磁记录数据，磁性支架和磁性层。由通式（I）表示的脂肪酸酯：其中R 1是具有4个或更少个碳的烃，并且R 2是具有12个或更多个碳的直链烃，存在于磁头和磁性层。该磁读/写系统在低温条件下以及在室温下表现出改善的头部粘附性，耐磨性和耐磨性。

4. 发明授权

US06660364B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US06660364B2
公开(公告)日：2003-12-09
申请号：US10231126
申请日：2002-08-30
申请人： Kenichiro Yoshida , Kimihiko Kaneno
发明人： Kenichiro Yoshida , Kimihiko Kaneno
IPC分类号： G11B571
CPC分类号： G11B5/70 , Y10T428/24355 , Y10T428/265
摘要： The object of the present invention is to provide a magnetic recording medium, particularly, a tape for data backup, which is less in wear of head, small in output deterioration and high in recording density. According to the present invention, there is provided a magnetic recording medium comprising a non-magnetic support having on one side at least one non-magnetic undercoat layer and a magnetic layer in succession and on another side a back coat layer, in which the magnetic layer is an ultra-thin magnetic layer having a thickness of not more than 0.20 &mgr;m provided by adjusting a standard deviation of histogram obtained by measuring the surface roughness of the magnetic layer by a light interference surface roughness meter to not more than 0.56 nm.
摘要翻译：本发明的目的是提供一种磁记录介质，特别是用于数据备份的磁带，其磁头磨损小，输出恶化小，记录密度高。根据本发明，提供了一种磁记录介质，其包括非磁性载体，所述非磁性载体的一侧具有至少一个非磁性底涂层和磁性层，并且在另一侧上具有背涂层，其中所述磁性层是通过将通过光干涉表面粗糙度计测量磁性层的表面粗糙度而获得的直方图的标准偏差调整为不大于0.56nm，提供厚度不大于0.20μm的超薄磁性层。

5. 发明授权

US06777072B2 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US06777072B2
公开(公告)日：2004-08-17
申请号：US10200406
申请日：2002-07-23
申请人： Stefan Mueller , Johannes Sandrock , Andrea Sturm , Wolfgang Goede , Albert Kohl , Benedikt Raether
发明人： Stefan Mueller , Johannes Sandrock , Andrea Sturm , Wolfgang Goede , Albert Kohl , Benedikt Raether
IPC分类号： G11B571
CPC分类号： G11B5/706 , G11B5/71 , G11B5/738 , Y10T428/25
摘要： Magnetic recording medium including a substrate, at least one lower layer which is applied thereon and contains at least one binder and at least one inorganic pigment, and at least one upper magnetic layer which is applied to the lower layer and contains at least one magnetic pigment P2 and at least one binder and at least one further, nonmagnetic pigment P3, the binder matrix of the upper magnetic layer having a Tg of at least 50° C. and the binder matrix of the lower layer containing at least one binder having a Tg of
摘要翻译：磁性记录介质，包括基材，至少一个下层，其上涂覆有至少一种粘合剂和至少一种无机颜料，以及至少一个上层磁性层，其被施加到下层并含有至少一种磁性颜料 P2和至少一种粘合剂和至少一种另外的非磁性颜料P3，上磁性层的粘合剂基质的Tg至少为50℃，下层的粘合剂基质含有至少一种具有Tg的粘合剂 <50℃，上磁性层的另外的非磁性颜料P3具有至少对应于上磁性层的干厚度的粒径; 上层磁性层含有至少一种化合物（A）和至少一种对应于下式的化合物（B），（A）和（B）及其制备方法。

6. 发明授权

US06607806B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US06607806B2
公开(公告)日：2003-08-19
申请号：US09732708
申请日：2000-12-11
申请人： Kazuo Kato , Kazuko Hanai , Mikio Ono
发明人： Kazuo Kato , Kazuko Hanai , Mikio Ono
IPC分类号： G11B571
CPC分类号： G11B5/70615 , G11B5/70621 , G11B5/7085 , G11B5/71 , Y10S428/90 , Y10T428/24355 , Y10T428/256 , Y10T428/31 , Y10T428/31609
摘要： A magnetic recording medium comprises: a support; and at least one magnetic layer comprising a binder and a ferromagnetic alloy powder including Fe, wherein the magnetic recording medium has a surface scratch depth of 370 nm to 460 nm, and has a surface lubricant index of 4 to 11.
摘要翻译：磁记录介质包括：支撑件; 以及包含粘合剂和包含Fe的铁磁性合金粉末的至少一个磁性层，其中磁记录介质的表面划痕深度为370nm至460nm，表面润滑指数为4至11。

7. 发明授权

US06607824B2 Magnetic read/write system and magnetic recording medium 有权
标题翻译：磁读/写系统和磁记录介质
公开(公告)号：US06607824B2
公开(公告)日：2003-08-19
申请号：US10075459
申请日：2002-02-15
申请人： Takashi Horai , Hideki Sasaki , Hiroyuki Yamada
发明人： Takashi Horai , Hideki Sasaki , Hiroyuki Yamada
IPC分类号： G11B571
CPC分类号： G11B5/78 , G11B5/00 , G11B5/00817 , G11B5/71 , G11B5/738 , G11B2005/0016 , Y10T428/265
摘要： A novel magnetic read/write system, in which a fixed MR head serves to read magnetically recorded data from a magnetic recording medium as it operates at a relative speed of 2.0 to 5.0 m/s with respect to the magnetic recording medium comprising a non-magnetic support and a magnetic layer. A fatty acid ester represented by general formula (I): where R1 is a hydrocarbon having 4 or less carbons, and R2 is a straight chain hydrocarbon having 12 or more carbons, exists between a read element of the MR head and the magnetic layer. This magnetic read/write system exhibits improved adherence to heads, running durability, and wear resistance of the tape in low temperature conditions as well as at room temperature.
摘要翻译：一种新颖的磁读/写系统，其中固定MR磁头用于从相对于包括非磁性磁记录介质的磁记录介质以相对速度2.0至5.0m / s的速度操作磁记录介质读取磁记录数据，磁性支架和磁性层。在MR头的读取元件和磁性层之间存在由通式（I）表示的脂肪酸酯：其中R 1是具有4个或更少个碳的烃，并且R 2是具有12个或更多个碳的直链烃。该磁读/写系统在低温条件下以及在室温下表现出改善的头部粘附性，耐磨性和耐磨性。

8. 发明授权

US06359754B1 Increased mechanical spacing through localized continuous carbon overcoat 有权
标题翻译：通过局部连续碳涂层增加机械间距
公开(公告)号：US06359754B1
公开(公告)日：2002-03-19
申请号：US09329429
申请日：1999-06-10
申请人： Jason W. Riddering , Zine-Eddine Boutaghou , Lance Eugene Stover , Peter Raymond Segar , Daniel Paul Burbank
发明人： Jason W. Riddering , Zine-Eddine Boutaghou , Lance Eugene Stover , Peter Raymond Segar , Daniel Paul Burbank
IPC分类号： G11B571
CPC分类号： G11B5/255 , G11B5/3106 , G11B5/6005 , G11B5/6082 , G11B5/72
摘要： An air bearing slider for a disc drive has an overcoat localized on the air bearing surface to provide a continuous covering over a leading portion of the air bearing surface. The overcoat terminates in a trailing cut-off line, and a trailing portion of the air bearing surface is not covered by overcoat. The overcoat also covers the pole tips of the transducer at a pole tip recession from the air bearing surface. The leading portion covered by the overcoat includes all of the air bearing surface that contacts the disc during contact/start/stop, which is protected by a uniform continuous overcoat layer. The trailing cut-off line is disposed at an angle to expose the trailing corners of the air bearing surface, such that all of the overcoat is elevated above the lowermost portion of the air bearing surface through pitch and roll angles of flying at inner and outer radii. Methods of applying the localized overcoat include subtractive and additive photolithographic deposition processes. The overcoat over the pole tips protects the pole tips during subsequent processing steps of forming the slider cavity.
摘要翻译：用于盘驱动器的空气轴承滑块具有定位在空气轴承表面上的外涂层，以在空气轴承表面的引导部分上提供连续的覆盖物。外罩终止于拖尾切割线，空气支承表面的后部不被外涂层覆盖。外罩还在空气轴承表面的极尖凹陷处覆盖换能器的极尖。由外涂层覆盖的引导部分包括在接触/起动/停止期间接触盘的所有空气轴承表面，其被均匀的连续外涂层保护。尾部切断线设置成一定角度以暴露空气支承表面的后角，使得所有的外涂层通过在内部和外部飞行的俯仰角和滚动角度而升高到空气轴承表面的最下部分之上半径施加局部外涂层的方法包括减色和附加光刻沉积工艺。在形成滑块空腔的后续处理步骤中，极尖上的外涂保护极尖。

9. 发明授权

US06274227B1 Magnetic recording medium having a magnetic layer and a coating thereunder 失效
标题翻译：具有磁性层和其下的涂层的磁记录介质
公开(公告)号：US06274227B1
公开(公告)日：2001-08-14
申请号：US09404756
申请日：1999-09-24
申请人： Shigeto Oiri , Yoji Tsukamoto , Hideaki Yasui
发明人： Shigeto Oiri , Yoji Tsukamoto , Hideaki Yasui
IPC分类号： G11B571
CPC分类号： G11B5/738 , C08G18/0828 , C08L27/06 , C08L75/04 , C08L75/06 , G11B5/7022 , Y10S428/90 , Y10T428/24942 , Y10T428/265 , C08L2666/14 , C08L2666/02
摘要： A magnetic recording medium comprising a nonmagnetic substrate, a liquid lubricant-containing coating layer having a porosity (U) formed on the substrate, and a magnetic layer having a porosity (M) formed directly on the coating layer. The ratio of porosity (U/M) between the coating and magnetic layers is between 0.75 and 1.25. The volume percentage of the lubricant contained in the pores of the coating layer based on the whole pore volume in the coating layer is from 35 to 85%. This improves the durability of the magnetic layer.
摘要翻译：包括非磁性基底，在基底上形成有孔隙率（U）的含液体润滑剂的涂层的磁记录介质以及直接形成在涂层上的具有孔隙率（M）的磁性层。涂层和磁性层之间的孔隙率（U / M）之比为0.75〜1.25。基于涂层的全部孔体积，涂层的孔中含有的润滑剂的体积百分比为35〜85％。这提高了磁性层的耐久性。

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