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    Leader tape and magnetic tape cartridge using the same
    1.
    发明授权
    Leader tape and magnetic tape cartridge using the same 有权
    领带和磁带使用相同

    公开(公告)号：US07352528B2

    公开(公告)日：2008-04-01

    申请号：US11084049

    申请日：2005-03-21

    申请人： Kiyomi Ejiri

    发明人： Kiyomi Ejiri

    IPC分类号： G11B5/78

    CPC分类号： G11B5/627 ,  G11B23/107

    摘要： A leader tape comprising a support and a coating layer containing a powder and a binder, wherein at least one surface of the leader tape has a center line average roughness (Ra) of from 10 to 60 nm, and the leader tape has a cupping of from 0 to 1 mm per a width of ½ inch.

    摘要翻译： 一种引导带，其包括支撑体和包含粉末和粘合剂的涂层，其中引导带的至少一个表面具有10至60nm的中心线平均粗糙度（Ra），并且引导带具有杯形 每½英寸的宽度为0至1毫米。

    Information recording tape
    2.
    发明申请
    Information recording tape 审中-公开
    信息录像带

    公开(公告)号：US20050264935A1

    公开(公告)日：2005-12-01

    申请号：US11138351

    申请日：2005-05-27

    申请人： Minoru Sueki ,  Kiyomi Ejiri

    发明人： Minoru Sueki ,  Kiyomi Ejiri

    IPC分类号： G11B5/70 ,  G11B5/74 ,  G11B5/78

    CPC分类号： G11B5/78 ,  G11B5/70

    摘要： An information recording tape including a data-recording area and a non-data-recording area, with the data-recording area having a center-line average surface roughness Ra smaller than 3 nm and at most 100/mm2 of protuberances standing at least 20 nm high, and with the non-data-recording area having a center-line average surface roughness Ra greater than 2 nm and more than 100/mm2 of protuberances standing at least 20 nm high.

    摘要翻译： 一种包括数据记录区和非数据记录区的信息记录带，数据记录区具有小于3nm且至多100 / mm 2的中心线平均表面粗糙度Ra， 其中非线性平均表面粗糙度Ra大于2nm，超过100 / mm 2的突起突出部位的非数据记录区域 至少20nm高。

    Leader tape and magnetic tape cartridge using the same
    3.
    发明申请
    Leader tape and magnetic tape cartridge using the same 审中-公开
    领带和磁带使用相同

    公开(公告)号：US20050211815A1

    公开(公告)日：2005-09-29

    申请号：US11090185

    申请日：2005-03-28

    申请人： Kiyomi Ejiri

    发明人： Kiyomi Ejiri

    IPC分类号： B32B5/16 ,  G11B5/627 ,  G11B23/107 ,  G11B23/26

    CPC分类号： G11B23/107 ,  G11B5/627 ,  Y10T428/254

    摘要： A leader tape comprising a support and a coating layer containing powder and a binder, wherein at least one surface of the leader tape has a center line average roughness (Ra) of from 10 to 60 nm, and the leader tape has a coefficient of thermal expansion in a transverse direction of not more than 20 ppm/° C., a coefficient of thermal expansion in a machine direction of not more than 20 ppm/°C., a coefficient of humidity expansion in a transverse direction of not more than 20 ppm/% RH, and a coefficient of humidity expansion in a machine direction of not more than 20 ppm/% RH.

    摘要翻译： 一种引导带，其包括支撑体和包含粉末和粘合剂的涂层，其中引导带的至少一个表面具有10至60nm的中心线平均粗糙度（Ra），并且引导带具有热系数 在横向上的膨胀不大于20ppm /℃，机器方向的热膨胀系数不大于20ppm /℃，横向湿度膨胀系数不大于20 ppm /％RH，纵向湿度膨胀系数不大于20ppm /％RH。

    Magnetic recording medium
    5.
    发明授权
    Magnetic recording medium 有权
    磁记录介质

    公开(公告)号：US06497948B2

    公开(公告)日：2002-12-24

    申请号：US09821496

    申请日：2001-03-29

    申请人： Kiyomi Ejiri ,  Masahiko Mori

    发明人： Kiyomi Ejiri ,  Masahiko Mori

    IPC分类号： G11B5706

    CPC分类号： G11B5/714 ,  G11B5/738 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/265

    摘要： The present invention aims to provide a particulate magnetic recording medium showing a high C/N in high-density magnetic recording (especially using an MR head for reproducing). Herein disclosed is a magnetic recording medium comprising a lower layer containing a nonmagnetic powder and a binder provided on a nonmagnetic flexible substrate and a magnetic layer containing a ferromagnetic powder and a binder provided thereon wherein said magnetic layer has an average thickness d of 0.01-0.1 &mgr;m, the ferromagnetic powder contained in said magnetic layer is an acicular ferromagnetic alloy powder having an average major axis length of 0.1 &mgr;m or less and a as of 120 A.m2/kg (120 emu/g) or less, the nonmagnetic powder contained in said lower layer is an acicular inorganic powder having an average major axis length of 0.15 &mgr;m or less, and said ferromagnetic powder has an aspect ratio equal to or smaller than the aspect ratio of said acicular inorganic powder.

    摘要翻译： 本发明的目的在于提供一种在高密度磁记录（特别是使用用于再现的MR磁头）中具有高C / N的微粒磁记录介质。此外，公开了一种磁记录介质，其包含含有非磁性粉末和 提供在非磁性柔性基板上的粘合剂和含有铁磁粉末和粘合剂的磁性层，其中所述磁性层的平均厚度d为0.01-0.1μm，所述磁性层中所含的铁磁性粉末是具有 平均长轴长度为0.1μm以下，a为120A·m 2 / kg（120emu / g）以下，所述下层中所含的非磁性粉末为平均长轴长度为0.15的针状无机粉末 所述铁磁粉末的纵横比等于或小于所述针状无机粉末的纵横比。

    Magnetic recording system
    7.
    发明授权
    Magnetic recording system 失效
    磁记录系统

    公开(公告)号：US5904979A

    公开(公告)日：1999-05-18

    申请号：US602567

    申请日：1996-02-14

    申请人： Yutaka Kakuishi ,  Kenichi Masuyama ,  Kiyomi Ejiri

    发明人： Yutaka Kakuishi ,  Kenichi Masuyama ,  Kiyomi Ejiri

    IPC分类号： G11B5/702 ,  C09D5/23 ,  G11B5/706 ,  G11B5/712 ,  G11B5/738

    CPC分类号： G11B5/738 ,  G11B5/712 ,  Y10S428/90 ,  Y10S977/932 ,  Y10T428/265 ,  Y10T428/2991 ,  Y10T428/31935

    摘要： (1) A magnetic recording system is disclosed, which comprises a thin-film magnetic head and a magnetic recording medium comprising a nonmagnetic support having thereon a magnetic layer comprising mainly ferromagnetic particles and a binder resin, wherein said binder resin comprising mainly a vinyl chloride resin, and said ferromagnetic particles are surface-treated with at least an organic compound. (2) Another magnetic recording system is disclosed, which comprises a thin-film magnetic head and a magnetic recording medium comprising a nonmagnetic support, a nonmagnetic layer comprising mainly inorganic nonmagnetic particles and a binder resin over the nonmagnetic support, and a magnetic layer comprising mainly ferromagnetic metal particles and a binder resin over the nonmagnetic layer, wherein said binder resins in said magnetic and nonmagnetic layers each comprises mainly a vinyl chloride resin, said ferromagnetic metal particles are surface-treated with at least an organic compound, and said magnetic layer has a thickness of from 0.05 to 1.0 .mu.m.

    摘要翻译： （1）公开了一种磁记录系统，其包括薄膜磁头和磁记录介质，该磁记录介质包括其上具有主要包含铁磁颗粒和粘合剂树脂的磁性层的非磁性载体，其中所述粘合剂树脂主要包含氯乙烯 树脂，并且所述铁磁颗粒用至少一种有机化合物进行表面处理。 （2）公开了另一种磁记录系统，其包括薄膜磁头和包括非磁性载体的磁记录介质，主要包含无磁性非磁性颗粒的非磁性层和在非磁性载体上的粘合剂树脂，以及包括 主要是非磁性层上的铁磁金属颗粒和粘合剂树脂，其中所述磁性和非磁性层中的所述粘合剂树脂主要包含氯乙烯树脂，所述强磁性金属颗粒用至少一种有机化合物进行表面处理，并且所述磁性层 厚度为0.05〜1.0μm。