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1.发明申请MAGNETIC RECORDING MEDIUM, MAGNETIC SIGNAL REPRODUCTION SYSTEM AND MAGNETIC SIGNAL REPRODUCTION METHOD 审中-公开磁记录介质，磁信号再现系统和磁信号再现方法公开(公告)号：US20090174970A1
公开(公告)日：2009-07-09
申请号：US12295510
申请日：2007-03-30
CPC分类号： G11B5/70 , G11B5/70678 , G11B5/714
摘要： The present invention relates to a magnetic recording medium comprising a nonmagnetic layer comprising a nonmagnetic powder and a binder and a magnetic layer comprising a ferromagnetic powder and a binder in this order on a nonmagnetic support. The magnetic layer has a thickness ranging from 30 to 130 nm, and a glossiness of the magnetic layer surface ranges from 155 to 270 percent.
摘要翻译： 本发明涉及一种在非磁性载体上依次包含非磁性粉末和粘合剂的非磁性层和包含铁磁粉末和粘结剂的磁性层的磁记录介质。 磁性层的厚度为30〜130nm，磁性层的光泽度为155〜270％。
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2.发明申请BINDER COMPOSITION FOR MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING MEDIUM 有权用于磁记录介质和磁记录介质的粘合剂组合物公开(公告)号：US20110076517A1
公开(公告)日：2011-03-31
申请号：US12892669
申请日：2010-09-28
CPC分类号： G11B5/7023 , C08F220/18 , C08F220/26 , C08F220/58 , C08F230/02 , C08G18/6229 , G11B5/7021 , G11B5/714
摘要： An aspect of the present invention relates to a binder composition for a magnetic recording medium, which comprises a vinyl copolymer comprising a structural unit denoted by general formula [1],: wherein, in general formula [1], R1 denotes a hydrogen atom, a halogen atom, or a methyl group, L1 denotes a single bond or a divalent linking group, and Y an alicyclic group; a structural unit denoted by general formula [2]: wherein, in general formula [2], R2 denotes a hydrogen atom, a halogen atom, or a methyl group, L2 denotes a single bond or a divalent linking group, and Z denotes a hydrocarbon group with a carbon number ranging from 8 to 50; and a structural unit denoted by general formula [3]: wherein, in general formula [3], R3 denotes a hydrogen atom, a halogen atom, or a methyl group, and L3 denotes a single bond or a divalent linking group.
摘要翻译： 本发明的一个方面涉及一种用于磁记录介质的粘合剂组合物，其包含由通式[1]表示的结构单元的乙烯基共聚物，其中通式[1]中，R 1表示氢原子， 卤原子或甲基，L1表示单键或二价连接基，Y表示脂环族基; 由通式[2]表示的结构单元：其中，通式[2]中，R 2表示氢原子，卤素原子或甲基，L 2表示单键或二价连接基，Z表示 碳数为8至50的烃基; 和由通式[3]表示的结构单元：其中，通式[3]中，R3表示氢原子，卤素原子或甲基，L3表示单键或二价连接基团。
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公开(公告)号：US07005203B2
公开(公告)日：2006-02-28
申请号：US10653932
申请日：2003-09-04
IPC分类号： G11B5/702
CPC分类号： G11B5/7021 , G11B5/70 , G11B5/7023 , G11B5/725
摘要： Provided is a magnetic recording medium that exhibits excellent electromagnetic characteristics especially in recording and reproducing systems using an MR head, as well as has excellent long-term preservation property. The magnetic recording medium comprises a lower layer comprising a nonmagnetic powder or a ferromagnetic powder and a binder and at least one magnetic layer thereover comprising a ferromagnetic powder and a binder on a support. Said binder comprised in the lower layer and/or magnetic layer comprises a polyurethane, said polyurethane is polyurethane (1) prepared from a chain extending agent, an organic diisocyanate, and a polyester polyol which comprises a dibasic acid component and a diol component, wherein the dibasic acid component comprises an aliphatic dibasic acid component and 70 molar percent or more of the diol component is derived from a diol having an alkyl branched side chain comprising two or more carbon atoms without a ring structure, or said polyurethane is polyurethane (2) prepared from a chain extending agent which comprises an alkyl branched aliphatic diol comprising three or more of total carbon atoms in a branched side chain per molecule, an organic diisocyanate, and a polyester polyol which comprises a dibasic acid component and a diol component, wherein the dibasic acid component comprises an aliphatic dibasic acid component and 70 molar percent or more of the diol component is derived from an alkyl branched aliphatic diol having a branched side chain of which total carbon atoms per molecule is two or more, and magnitude of saturation magnetic flux density (φm) ranges from 150 to 400 G·μm.
摘要翻译： 提供了一种磁记录介质，其特别是在使用MR磁头的记录和再现系统中具有优异的电磁特性，并且具有优异的长期保存性能。 磁记录介质包括由非磁性粉末或铁磁性粉末和粘结剂构成的下层，以及至少一个包含铁磁粉末和载体上的粘合剂的磁性层。 包含在下层和/或磁性层中的所述粘合剂包括聚氨酯，所述聚氨酯是由链增长剂，有机二异氰酸酯和包含二元酸组分和二醇组分的聚酯多元醇制备的聚氨酯（1），其中 二元酸组分包含脂族二元酸组分，并且70摩尔％或更多的二醇组分衍生自具有烷基支链侧链的二醇，其具有两个或多个没有环结构的碳原子，或者所述聚氨酯是聚氨酯（2） 由包含分子中支链侧链中总共碳原子数三个以上的烷基支链脂肪族二醇，有机二异氰酸酯和含有二元酸成分和二醇成分的聚酯多元醇构成的链延长剂制备，其中， 二元酸组分包含脂族二元酸组分，70摩尔％或更多的二元醇组分衍生自fr 具有每分子总碳原子数为2以上的支链侧链的烷基支链脂族二醇，饱和磁通密度（phim）的量级为150〜400Ggm。
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公开(公告)号：US5908683A
公开(公告)日：1999-06-01
申请号：US844388
申请日：1997-04-18
CPC分类号： G11B5/70 , G11B5/733 , G11B5/738 , Y10S428/90 , Y10T428/256 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording medium comprises a non-magnetic substrate, a lower coating layer, which is overlaid upon the non-magnetic substrate and primarily contains a binder and inorganic particles dispersed in the binder, and a magnetic layer, which is overlaid upon the lower coating layer and is constituted of at least a single layer. The magnetic layer contains at least a binder and ferromagnetic metal particles dispersed in the binder. The thickness of the magnetic layer falls within the range of 0.05 .mu.m to 0.5 .mu.m. The surface roughness of a top magnetic layer is at most 3 nm. The lower coating layer contains a fatty acid. An increase in the number of small protrusions, which have a height of at least 30 nm, does not occur substantially on the surface of the magnetic layer after the magnetic recording medium has been stored for seven days under environmental conditions of a temperature of 60.degree. C. and a relative humidity of 90%.
摘要翻译： 磁记录介质包括非磁性基底，下涂层，其覆盖在非磁性基底上并且主要包含分散在粘合剂中的粘合剂和无机颗粒以及覆盖在下涂层上的磁性层 层，并且由至少单层构成。 磁性层至少包含粘合剂和分散在粘合剂中的强磁性金属颗粒。 磁性层的厚度在0.05μm〜0.5μm的范围内。 顶层磁性层的表面粗糙度为3nm以下。 下涂层含有脂肪酸。 在磁记录介质已经在温度为60°的环境条件下储存了七天之后，磁性层的表面上基本上没有出现高度至少为30nm的小突起的数量的增加。 C.相对湿度为90％。
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公开(公告)号：US20060188653A1
公开(公告)日：2006-08-24
申请号：US11342563
申请日：2006-01-31
CPC分类号： B05D1/40 , B29D17/005 , B29L2017/005 , G11B7/266
摘要： A blade coating method using a plurality of blades for applying coating liquid on surfaces of disk-like flat substrates to thereby form coating layers on to-be-coated surfaces of the flat substrates respectively, the method comprising: the attaching step as defined herein; and the moving step as defined herein; wherein after a first one of the blades applies the coating liquid on a surface of a disk-like flat substrate in a direction, the first blade retracts and a second one of the blades applies the coating liquid on a surface of a next disk-like flat substrate in a direction reverse to the direction applied by the first blade.
摘要翻译： 一种叶片涂布方法，其使用多个叶片，用于将涂覆液体涂覆在盘状平坦基板的表面上，从而在平坦基板的待涂覆表面上分别形成涂层，所述方法包括：如本文所定义的附着步骤; 和如本文所定义的移动步骤; 其中在所述叶片中的第一个沿着一个方向将所述涂覆液体施加到所述盘状平坦基板的表面上之后，所述第一刮刀缩回，并且所述刀片中的第二刀片将涂覆液体施加到下一个盘状平板 平面基板在与第一叶片施加的方向相反的方向上。
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公开(公告)号：US20060182875A1
公开(公告)日：2006-08-17
申请号：US11350809
申请日：2006-02-10
摘要： The present invention provides a method for manufacturing a disc-shaped information medium that has, on a substrate, a printable layer containing at least a base layer and an ink-receiving layer. The method comprises, performing a liquid spread prevention treatment at an outer peripheral region, which is from an outer peripheral end portion of the substrate to an outer peripheral end portion of the ink-receiving layer; and coating an ink-receiving layer coating liquid for forming the ink-receiving layer onto the base layer to form the printable layer.
摘要翻译： 本发明提供一种盘形信息介质的制造方法，该方法在基板上具有至少包含基层和油墨接收层的可印刷层。 该方法包括：在从基板的外周端部到油墨接收层的外周端部的外周区域进行液体扩散防止处理; 并将用于形成油墨接收层的油墨接受层涂布液涂覆到基层上以形成可印刷层。
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公开(公告)号：US20060165905A1
公开(公告)日：2006-07-27
申请号：US11337536
申请日：2006-01-24
CPC分类号： B41M5/52 , B41M5/508 , B41M5/5218 , B41M5/5227 , B41M5/5254 , G11B7/266
摘要： A method for manufacturing a disc-shaped information medium that has, on a substrate, a printable layer that includes at least an ink-receiving layer having a thickness in the range of 20 to 50 μm, the method including coating an ink-receiving layer coating liquid on the substrate to form the ink-receiving layer, and thereafter blowing drying air on a coated surface at a wind speed in the range of 0.5 to 5 m/sec and at a temperature in the range of 10 to 40° C. to perform a drying process and thereby form the printable layer.
摘要翻译： 一种盘状信息介质的制造方法，其特征在于，在基板上具有至少包含厚度在20〜50μm的墨水接收层的可印刷层，所述方法包括将油墨接收层 在基板上涂布液体以形成油墨接收层，然后以0.5至5m / sec的范围内的风速和10至40℃的温度在涂覆表面上吹干燥空气。 进行干燥处理，从而形成可印刷层。
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公开(公告)号：US06913818B2
公开(公告)日：2005-07-05
申请号：US10860586
申请日：2004-06-04
CPC分类号： G11B5/70 , G11B5/7021 , Y10T428/25 , Y10T428/256 , Y10T428/31609
摘要： A magnetic recording medium comprising a non-magnetic support and a magnetic layer containing a binder and a ferromagnetic metal powder dispersed in the binder, wherein the binder contains a polyurethane resin obtained from a polyester polyol, a chain extender, and an organic diisocyanate, and the magnetic layer has a product Π of coercive force Hc (kA/m) in an in-plane, longitudinal direction and magnetic flux Øm (Tμm) in a range of from 400 to 800.
摘要翻译： 一种包含非磁性载体和含有粘合剂和分散在粘合剂中的强磁性金属粉末的磁性层的磁记录介质，其中粘合剂含有由聚酯多元醇，扩链剂和有机二异氰酸酯获得的聚氨酯树脂，和 磁性层在面内，纵向和磁通量Øm（Tmum）的矫顽力Hc（kA / m）的乘积Pi在400〜800的范围内。
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9.发明授权
公开(公告)号：US5847905A
公开(公告)日：1998-12-08
申请号：US789563
申请日：1997-01-28
CPC分类号： G11B5/41 , G11B15/62 , G11B5/1871
摘要： A cleaning medium for magnetic recording devices comprises a non-magnetic substrate and a lower coating layer, which is overlaid upon the non-magnetic substrate and primarily contains a binder and non-magnetic inorganic particles dispersed in the binder. The cleaning medium also comprises a cleaning layer, which is overlaid upon the lower coating layer and contains a binder and inorganic particles dispersed in the binder, the inorganic particles at least containing ferromagnetic particles. The thickness of the cleaning layer falls within the range of 0.05 .mu.m to 1.0 .mu.m, and the squareness ratio of the cleaning layer falls within the range of 0.6 to 0.98. The cleaning medium yields little wear of magnetic heads, has good cleaning characteristics, and is capable of trueing up the shape of an end of a cleaned magnetic head into a sharp shape, such that the compatibility of the magnetic head with both of a metal evaporated tape and a metal powder tape in coming into close and uniform contact with the tapes may be kept good.
摘要翻译： 用于磁记录装置的清洁介质包括非磁性基底和下涂层，其覆盖在非磁性基底上并且主要包含分散在粘合剂中的粘合剂和非磁性无机颗粒。 清洁介质还包括清洁层，其覆盖在下涂层上并且包含粘合剂和分散在粘合剂中的无机颗粒，所述无机颗粒至少含有铁磁颗粒。 清洗层的厚度在0.05μm〜1.0μm的范围内，清洗层的矩形比落在0.6〜0.98的范围内。 清洁介质的磁头几乎没有磨损，具有良好的清洁特性，并且能够将清洁的磁头的端部的形状实现为尖锐的形状，使得磁头与金属蒸发的相容性 胶带和与胶带紧密均匀接触的金属粉末胶带可能保持良好。
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公开(公告)号：US5109377A
公开(公告)日：1992-04-28
申请号：US396922
申请日：1989-08-22
IPC分类号： G11B7/26 , G11B11/105
CPC分类号： G11B11/10586 , G11B11/10584 , G11B7/26
摘要： A magneto-optical recording medium has a substrate and a recording layer which is formed on the substrate. The recording layer is formed of a plurality of transition metal films and a plurality of rare earth metal films which are alternately formed one on the other, and at least a metal selected from the group consisting of Cr, Al and Ti is contained in the rare earth metal films or the transition metal films.
摘要翻译： 磁光记录介质具有基板和形成在基板上的记录层。 记录层由多个过渡金属膜和多个彼此交替形成的稀土金属膜形成，并且至少含有选自Cr，Al和Ti的金属在稀有 土金属膜或过渡金属膜。
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