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    • 52. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US06846555B2
    • 2005-01-25
    • US10413510
    • 2003-04-15
    • Katsuhiko MeguroMasatoshi Takahashi
    • Katsuhiko MeguroMasatoshi Takahashi
    • G11B5/702G11B5/706G11B5/738G11B5/733
    • G11B5/70678G11B5/7026G11B5/738Y10T428/25Y10T428/259Y10T428/265
    • Provided is a magnetic recording medium having high C/N, low error rate, and excellent running durability. The magnetic recording medium comprises a magnetic layer 1 comprising a ferromagnetic powder and a binder, or comprising a nonmagnetic layer comprising a nonmagnetic powder and a binder and a magnetic layer 2 comprising a ferromagnetic powder and a binder in this order on a nonmagnetic support. An undercoating layer comprising a clay mineral coated with an organic compound and a binder is comprised between the nonmagnetic support and the magnetic layer 1 or between the nonmagnetic support and the nonmagnetic layer, as well as said clay mineral coated with an organic compound has a thickness ranging from 0.5 to 5 nm and an aspect ratio ranging from 50 to 10,000.
    • 提供了具有高C / N,低错误率和优异的运行耐久性的磁记录介质。 磁记录介质包括磁性层1,其包含铁磁性粉末和粘合剂,或者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性粉末和粘合剂的磁性层2。 包含有机化合物和粘合剂的粘土矿物的底涂层包含在非磁性载体和磁性层1之间或非磁性载体和非磁性层之间,以及涂覆有机化合物的所述粘土矿物的厚度 范围为0.5至5nm,纵横比为50至10,000。
    • 55. 发明授权
    • Non-aqueous electrolyte secondary cell
    • 非水电解质二次电池
    • US5856039A
    • 1999-01-05
    • US824734
    • 1997-03-26
    • Masatoshi Takahashi
    • Masatoshi Takahashi
    • B32B5/32H01M2/16H01M6/50H01M10/05H01M10/052H01M10/0566H01M2/14
    • H01M2/1686H01M2/1653H01M2200/10
    • A non-aqueous electrolyte secondary cell includes a positive electrode containing lithium-contained complex oxide, a negative electrode containing a material which can absorb and desorb lithium or lithium ion, and a separator which is filled with an organic electrolyte. The separator is composed of a plurality of laminated blend polymer fine porous films each containing polyethylene and polypropylene, and at least one of the laminated blend polymer fine porous films has a different ratio of polyethylene and polypropylene from the other blend polymer fine porous films. In this construction, a blend polymer fine porous film having a higher ratio of polypropylene increases the piercing strength of the separator, and at the same time a blend polymer fine porous film having a higher ratio of polyethylene increases the shut-down characteristic.
    • 非水电解质二次电池包括含有锂的复合氧化物的正极,含有能够吸收和解吸锂或锂离子的材料的负极,以及填充有机电解质的隔膜。 分离器由多个层压共混聚合物细多孔膜组成,每个聚合物微孔膜均含有聚乙烯和聚丙烯,并且至少一个层压共混聚合物微孔膜与其它共混聚合物微孔膜具有不同的聚乙烯和聚丙烯的比例。 在这种结构中,具有较高比例聚丙烯的共混聚合物细多孔膜增加了隔膜的刺穿强度,同时具有较高聚乙烯比的共混聚合物细多孔膜增加了关闭特性。
    • 56. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US5370932A
    • 1994-12-06
    • US15293
    • 1993-02-08
    • Hiroo InabaMasatoshi TakahashiKazuaki TagaKeiji Mori
    • Hiroo InabaMasatoshi TakahashiKazuaki TagaKeiji Mori
    • G11B5/716C09D5/23C09D127/04C09D127/06C09D175/06G11B5/73B32B5/16G11B5/66
    • G11B5/716Y10T428/12931Y10T428/25Y10T428/257Y10T428/265
    • A magnetic recording medium excellent in electromagnetic properties is disclosed, which comprises a non-magnetic support and at least two magnetic layers formed thereon, each of which is mainly composed of a magnetic substance and a binder, in which a first magnetic layer (a lower layer) has a coercive force of 450 to 660 Oe, a residual magnetic flux density (Br) of 1,950 gausses or more and a thickness of 1.5 to 5 .mu.m, a second magnetic layer (an upper layer) has a coercive force of 700 to 900 Oe, a residual magnetic flux density of 1,500 gausses or more and a thickness of 1.5 to 3 .mu.m, the difference in coercive force between the first magnetic layer and the second magnetic layer is 150 to less than 300 Oe, the difference in residual magnetic flux density between the first magnetic layer and the second magnetic layer is within 600 gausses, and the total thickness of magnetic layers on the non-magnetic support is 3 to 7 .mu.m.
    • 公开了一种电磁特性优异的磁记录介质,其包括非磁性载体和形成在其上的至少两个磁性层,它们各自主要由磁性物质和粘合剂组成,其中第一磁性层 层)的矫顽力为450〜660Oe,剩余磁通密度(Br)为1,950高斯或以上,厚度为1.5〜5μm,第2磁性层(上层)的矫顽力为700 至900Oe,剩余磁通密度为1500高斯或更大,厚度为1.5至3μm,第一磁性层和第二磁性层之间的矫顽力差为150至小于300Oe, 第一磁性层和第二磁性层之间的剩余磁通密度在600高斯内,非磁性载体上的磁性层的总厚度为3〜7μm。
    • 59. 发明授权
    • Magnetic recording medium and method of manufacturing the same
    • 磁记录介质及其制造方法
    • US07960045B2
    • 2011-06-14
    • US12239937
    • 2008-09-29
    • Katsuhiko MeguroMasatoshi Takahashi
    • Katsuhiko MeguroMasatoshi Takahashi
    • G11B5/62B05D5/12C08F2/46
    • G11B5/7305G11B5/8404Y10T428/31855
    • An aspect of the present invention relates to a magnetic recording medium comprising a coating layer on a nonmagnetic support, wherein the coating layer comprises a nonmagnetic layer comprising a nonmagnetic powder and a binder and a magnetic layer comprising a ferromagnetic powder and a binder in this order, the nonmagnetic support comprises a main component in the form of a resin obtained by mixing and/or copolymerizing a polyester and a polymer having compatibility with the polyester, has a glass transition temperature of equal to or higher than 80° C. but less than 125° C., and has a heat absorption peak, based on enthalpy relaxation, ranging from 0.5 to 2.0 J/g. Another aspect of the present invention relates to a method of manufacturing a magnetic recording medium.
    • 本发明的一个方面涉及一种磁性记录介质,其包括在非磁性载体上的涂层,其中所述涂层包括非磁性层,包括非磁性粉末和粘合剂,以及包含铁磁性粉末和粘合剂的磁性层按此顺序 ,非磁性载体包括通过将聚酯和与聚酯具有相容性的聚合物混合和/或共聚获得的树脂形式的主要组分,其玻璃化转变温度等于或高于80℃但小于 125℃,基于焓弛豫,具有0.5〜2.0J / g的吸热峰。 本发明的另一方面涉及一种制造磁记录介质的方法。