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40 条记录 (耗时 0.018 秒)

    Magnetic recording medium
    1.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4337288A

    公开(公告)日：1982-06-29

    申请号：US207546

    申请日：1980-11-17

    申请人： Haruo Takenaka ,  Eiichi Tadokoro ,  Masaaki Fujiyama

    发明人： Haruo Takenaka ,  Eiichi Tadokoro ,  Masaaki Fujiyama

    IPC分类号： G11B5/70 ,  C09D5/23 ,  C09D7/12 ,  G11B5/708

    CPC分类号： G11B5/7085 ,  Y10S428/90 ,  Y10T428/24612 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/258 ,  Y10T428/31

    摘要： A magnetic recording medium comprising a coated magnetic recording layer having video and chroma S/N ratios appropriately balanced with tape transporting characteristics is attained by controlling the magnetic layer to have a surface roughness such that the maximum value of the arithmetical average roughness (Ra) is about 80 A or greater in the surface roughness pitch region greater than about 300 .mu.m while in the surface roughness pitch region of about 5 .mu.m to about 100 .mu.m the maximum value of the arithmetical average roughness (Ra) is about 40 A or less.

    摘要翻译： 通过控制磁性层具有表面粗糙度使得算术平均粗糙度（Ra）的最大值为（R）的方法来获得包括具有通过带传送特性适当平衡的视频和色度S / N比的涂覆磁记录层的磁记录介质 在大于约300μm的表面粗糙度间距区域中约80或更大，而在约5μm至约100μm的表面粗糙度间距区域中，算术平均粗糙度（Ra）的最大值为约40或 减。

    Method of preparing a magnetic recording medium with a calendering treatment
    2.
    发明授权
    Method of preparing a magnetic recording medium with a calendering treatment 失效
    制备具有压延处理的磁记录介质的方法

    公开(公告)号：US4499121A

    公开(公告)日：1985-02-12

    申请号：US491485

    申请日：1983-05-04

    申请人： Nobutaka Yamaguchi ,  Masaaki Fujiyama ,  Sugihiko Tada ,  Eiichi Tadokoro ,  Katsumi Ryoke ,  Masahiro Utsumi ,  Masami Suzuki

    发明人： Nobutaka Yamaguchi ,  Masaaki Fujiyama ,  Sugihiko Tada ,  Eiichi Tadokoro ,  Katsumi Ryoke ,  Masahiro Utsumi ,  Masami Suzuki

    IPC分类号： G11B5/84

    CPC分类号： G11B5/84

    摘要： A method for producing a magnetic recording medium is disclosed. The method involves providing a ferromagnetic coating layer on a non-magnetic support base to produce a coated base. The coated base is then subjected to an atmosphere having a RH of 60% or more, prior to or during a subsequent calendering treatment. The recording medium produced has excellent surface smoothness and improved electromagnetic properties. The method is advantageous in that a substantially long period of time may pass between the coating of the ferromagnetic layer on the support and the calendering treatment without having undesirable effects on the magnetic recording medium produced.

    摘要翻译： 公开了一种制造磁记录介质的方法。 该方法包括在非磁性支撑基底上提供铁磁涂层以产生涂覆的基底。 然后在随后的压光处理之前或期间，将涂覆的基底经受RH为60％或更高的气氛。 所生产的记录介质具有优异的表面光滑度和改善的电磁特性。 该方法的优点在于，在载体上的铁磁层的涂层和压延处理之间可能经历相当长的一段时间，而不会对所产生的磁记录介质产生不期望的影响。

    Magnetic recording medium
    9.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4552799A

    公开(公告)日：1985-11-12

    申请号：US602985

    申请日：1984-04-23

    申请人： Katsumi Ryoke ,  Shinobu Iida ,  Masaaki Fujiyama ,  Eiichi Tadokoro

    发明人： Katsumi Ryoke ,  Shinobu Iida ,  Masaaki Fujiyama ,  Eiichi Tadokoro

    IPC分类号： G11B5/71 ,  G11B5/72

    CPC分类号： G11B5/71 ,  G11B5/72 ,  Y10S428/90 ,  Y10T428/24793 ,  Y10T428/27

    摘要： A magnetic recording medium comprised of a non-magnetic support base having provided thereon a magnetic recording layer is disclosed. The medium also has position thereon a compound selected from the group consisting of carboxylic acids and carboxylic acid derivatives, the compound being present on an edge portion of the medium. The medium also includes an additional lubricant on the middle part of the medium, the additional lubricant being selected from the group consisting of alphatic acid esters, alphatic acids, silicons and phosphoric acid esters. By utilizing two different types of lubricants on different portions of the medium it is possible to obtain improved lubricating properties and thus improve runnability with respect to the operation of the magnetic recording medium.

    摘要翻译： 公开了一种磁记录介质，其包括设置有磁记录层的非磁性支撑基底。 该介质还具有位于其上的位于介质边缘部分上的化合物，该化合物选自羧酸和羧酸衍生物。 该培养基还在培养基的中间部分包含另外的润滑剂，另外的润滑剂选自由以下组成的组：脂肪酸酯，脂肪酸，硅酮和磷酸酯。 通过在介质的不同部分上使用两种不同类型的润滑剂，可以获得改进的润滑性能，从而提高关于磁记录介质的操作的运行性能。

    Magnetic recording medium
    10.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4546038A

    公开(公告)日：1985-10-08

    申请号：US489908

    申请日：1983-04-29

    申请人： Nobutaka Yamaguchi ,  Masaaki Fujiyama ,  Katsumi Ryoke ,  Eiichi Tadokoro

    发明人： Nobutaka Yamaguchi ,  Masaaki Fujiyama ,  Katsumi Ryoke ,  Eiichi Tadokoro

    IPC分类号： C09C1/48 ,  C09D5/23 ,  C09D7/12 ,  C10M103/02 ,  C10M171/00 ,  C10N20/06 ,  C10N40/18 ,  G11B5/708 ,  B32B5/16

    CPC分类号： G11B5/708 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/257

    摘要： A magnetic recording medium is disclosed which is comprised of a non-magnetic support having a magnetic layer provided thereon. The magnetic layer is comprised of two different types of carbon black having different particle sizes, a lubricant which is liquid at room temperature, a ferromagnetic powder all dispersed in a binder. A carbon black (1) has an average particle size smaller than 50 m.mu. and a carbon black (2) has an average particle size of larger than 120 m.mu.. The carbon black is present in a weight ratio of (1)/(2) within the range of 50/50 to 97/3. The magnetic recording medium has improved electromagnetic properties and running durability. In addition, the material provides an improved S/N ratio and an improved coefficient of friction.

    摘要翻译： 公开了一种磁记录介质，其包括其上设置有磁性层的非磁性支撑件。 磁性层由具有不同粒度的两种不同类型的炭黑组成，在室温下为液体的润滑剂，全部分散在粘合剂中的铁磁性粉末。 炭黑（1）的平均粒径小于50μm，炭黑（2）的平均粒径大于120μm。 炭黑以（1）/（2）的重量比在50/50至97/3的范围内存在。 磁记录介质具有改进的电磁特性和运行耐久性。 此外，该材料提供改进的S / N比和改进的摩擦系数。