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41 条记录 (耗时 0.026 秒)

    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
    3.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4663217A

    公开(公告)日：1987-05-05

    申请号：US767240

    申请日：1985-08-19

    申请人： Nobutaka Yamaguchi ,  Shinobu Iida ,  Masahiro Utsumi ,  Norio Nasu ,  Eiichi Tadokoro

    发明人： Nobutaka Yamaguchi ,  Shinobu Iida ,  Masahiro Utsumi ,  Norio Nasu ,  Eiichi Tadokoro

    IPC分类号： C09D101/18 ,  C09D175/04 ,  G11B5/73 ,  G11B5/735 ,  B32B5/16

    CPC分类号： G11B5/735 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/31551 ,  Y10T428/31725

    摘要： A magnetic recording medium comprised of a nonmagnetic support base having a magnetic recording layer on one surface thereof and a backing layer on the other surface thereof is disclosed. The backing layer is comprised of (1) carbon black having a particle size in the range of 10 to 150 m.mu., (2) graphite having a particle size of 3.mu. or less, and (3) a curing agent. By utilizing this particular backing layer the resulting recording medium has improved durability with respect to the backing layer and shows a decreased in the number of dropouts and scratches during use.

    摘要翻译： 公开了一种磁记录介质，其包括在其一个表面上具有磁记录层的非磁性支撑基底和在另一表面上的背衬层。 背衬层由（1）粒径为10〜150μm的碳黑，（2）粒径为3μm以下的石墨，（3）固化剂构成。 通过利用这种特定的背衬层，所得到的记录介质相对于背衬层具有改进的耐久性，并且在使用期间显示掉落数量和划痕数量减少。

    Magnetic recording medium
    6.
    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。