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    Black non-magnetic composite particles for black toner and black toner using the same
    111.
    发明公开
    Black non-magnetic composite particles for black toner and black toner using the same 有权
    黑色非磁性复合体颗粒为黑色调色剂和黑色调色剂，其特征在于，它们用于

    公开(公告)号：EP0945766A3

    公开(公告)日：2000-02-23

    申请号：EP99302317.5

    申请日：1999-03-25

    申请人： TODA KOGYO CORP.

    发明人： Hayashi, Kazuyuki ,  Morii, Hiroko ,  Tanaka, Yasuyuki ,  Ishitani, Seiji

    IPC分类号： G03G9/09 ,  G03G9/097 ,  G03G9/083

    CPC分类号： G03G9/0838 ,  G03G9/0839 ,  G03G9/0902 ,  G03G9/0904

    摘要： Black non-magnetic composite particles for a Black toner of the present invention comprising: (a) hematite and/or iron oxide hydroxide particles having an average particle diameter of from 0.055 to 0.95 µm; (b) a coating on the surface of said hematite and/or iron oxide hydroxide particles, comprising at least one organosilicon compound selected from:(1) organosilane compounds obtainable by drying or heat-treating alkoxysilane compounds,(2) polysiloxanes or modified polysiloxanes, and(3) fluoroalkyl organosilane compounds obtainable by drying or heat-treating fluoroalkylsilane compounds; and (c) carbon black fine particles adhered on said coating, which have a particle diameter of from 0.002 to 0.05 µm and which are present in an amount of from 1 to 25 parts by weight per 100 parts by weight of said hematite and/or iron oxide hydroxide particles.

    Magnetic particles and magnetic carrier for electrophotographic developer
    112.
    发明公开
    Magnetic particles and magnetic carrier for electrophotographic developer 有权
    Magnetische Teilchen und magnetischerTrägerfürelektrophotographische Entwickler

    公开(公告)号：EP0973070A1

    公开(公告)日：2000-01-19

    申请号：EP99305576.3

    申请日：1999-07-14

    申请人： TODA KOGYO CORP.

    发明人： Hakata, Toshiyuki

    IPC分类号： G03G9/113 ,  H01F1/36

    CPC分类号： H01F1/36 ,  G03G9/1136 ,  G03G9/1138 ,  G03G9/1139 ,  Y10T428/2995

    摘要： Magnetic particles which have an average particle size of from 10 to 200 µm and which comprise:

    magnetic core particles; and
    a coating layer on the surface of said magnetic core particles, which coat comprises at least one silane-based coupling agent,a silicone resin and at least one metal alkoxide represented by the general formula (I) :

            (RO) n M     (I)

       wherein R is a C 1 to C 16 alkyl group; M is Al, Ti, Na,
       K, Ca, Zn or Fe; and n is an integer of from 1 to 4.

    摘要翻译： 平均粒度为10〜200μm，磁芯粒子的磁性粒子; 和所述磁芯颗粒表面上的涂层，该涂层包含至少一种硅烷基偶联剂，硅氧烷树脂和由通式（I）表示的至少一种金属醇盐：（RO）nM，其中R为 C1〜C16烷基; M是Al，Ti，Na，K，Ca，Zn或Fe; n为1〜4的整数

    Black magnetic composite particles and black magnetic toner using the same
    113.
    发明公开
    Black magnetic composite particles and black magnetic toner using the same 审中-公开
    黑色微粒可磁化复合材料和含有该黑色磁性调色剂

    公开(公告)号：EP0936507A3

    公开(公告)日：1999-11-17

    申请号：EP99301117.0

    申请日：1999-02-16

    申请人： TODA KOGYO CORP.

    发明人： Hayashi, Kazuyuki ,  Morii, Hiroko ,  Tanaka, Yasuyuki ,  Ishitani, Seiji

    IPC分类号： G03G9/083 ,  G03G9/09 ,  C01G49/00

    CPC分类号： G03G9/08773 ,  G03G9/083 ,  G03G9/0833 ,  G03G9/0836 ,  G03G9/0839 ,  G03G9/0902 ,  G03G9/0904

    摘要： Black magnetic composite particles for a black magnetic toner comprising:
    (a) magnetic iron oxide particles having an average particle diameter of from 0.055 to 0.95 µm; (b) a coating on the surface of said magnetic iron oxide particles, comprising at least one organosilicon compound selected from:
    (1) organosilane compounds obtainable by drying or heat-treating alkoxysilane compounds, (2) polysiloxanes or modified polysiloxanes, and (3) fluoroalkyl organosilane compounds obtainable by drying or heat-treating fluoroalkylsilane compounds; and (c) carbon black fine particles adhered on at least a part of said coating, which have a particle size of from 0.002 to 0.05 µm and which are present in an amount of from 1 to 25 parts by weight per 100 parts by weight of said magnetic iron oxide particles.

    Magnetic recording medium and process for producing the same
    114.
    发明公开
    Magnetic recording medium and process for producing the same 审中-公开
    磁记录介质及其制造方法

    公开(公告)号：EP0944043A3

    公开(公告)日：1999-10-13

    申请号：EP99302151.8

    申请日：1999-03-19

    申请人： TODA KOGYO CORP.

    发明人： Doi, Takanori ,  Tamari, Kousaku ,  Kakihara, Yasuo ,  Nakata, Kenichi ,  Matsuura, Mitsuru ,  Yamamoto, Setsuo

    IPC分类号： G11B5/64

    CPC分类号： G11B5/656 ,  G11B5/84 ,  G11B5/851 ,  Y10S428/90

    摘要： A magnetic recording medium suitably applicable to existent magnetic recording systems using a ring-type magnetic head and capable of using a plastic substrate for providing a magnetic recording medium for high-density recording, which magnetic recording medium has a coercive force of not less than 159 kA/m (2,000 Oe) and comprises:
    (a) a plastic substrate; and (b) a cobalt-containing maghemite film on the substrate; wherein the film has:
    a molar ratio of cobalt to iron of not more than 0.06:1; and a spacing of a plane (311) of not more than 0.2510 nm (2.510Å), a spacing of a plane (222) of not more than 0.2415 nm (2.415Å) or a spacing of a plane (220) of not more than 0.2950 nm (2.950Å).

    摘要翻译： 一种磁记录介质，适用于使用环形磁头的现有磁记录系统，并且能够使用塑料基片来提供用于高密度记录的磁记录介质，该磁记录介质具有不小于159的矫顽力 kA / m（2000 Oe）并且包括：（a）塑料基材; 和（b）在基底上的含钴磁赤铁矿膜; 其中所述膜具有：钴与铁的摩尔比不大于0.06：1; 并且平面（311）的间距不大于0.2510nm（2.510），平面（222）的间距不大于0.2415nm（2.415），或者平面（220）的间隔不大于 超过0.2950nm（2.950）。

    Magnetic recording medium
    118.
    发明公开
    Magnetic recording medium 有权
    磁记录介质

    公开(公告)号：EP0907162A1

    公开(公告)日：1999-04-07

    申请号：EP98307841.1

    申请日：1998-09-28

    申请人： TODA KOGYO CORP.

    发明人： Tamari, Kousaku ,  Doi, Takanori ,  Kakihara, Yasuo ,  Nakata, Kenichi

    IPC分类号： G11B5/64 ,  G11B5/66

    CPC分类号： G11B5/7325 ,  G11B5/66 ,  Y10S428/90 ,  Y10T428/26 ,  Y10T428/265

    摘要： A magnetic recording medium comprises:

    a substrate;
    a nickel oxide underlayer on said substrate; and
    a cobalt-containing maghemite film which is provided on said nickel oxide underlayer, which has a spacing of a (311) plane of not more than 0.2510 nm (2.510Å), a spacing of a (222) plane of not more than 0.2415 nm (2.415Å) or a spacing of a (220) plane of not more than 0.2950 nm (2.950Å), and in which the ratio of the X-ray diffraction spectrum peak intensity of the (311), (222) or (220) plane of the said film to the X-ray diffraction spectrum peak intensity of the (400) plane is more than 0.5:1.

    摘要翻译： 一种磁记录介质，包括：衬底; 在所述衬底上的氧化镍底层; 以及设置在所述氧化镍底层上的含钴磁赤铁矿膜，所述氧化镍底层的（311）面的间距不大于0.2510nm（2.510），（222）面的间距不大于0.2415 （211），（222）或（220）面的X射线衍射光谱峰值强度之比为0.2950nm（2.950）以下， 220）面与所述（400）面的X射线衍射谱峰值强度之比大于0.5:1。