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8 条记录 (耗时 0.017 秒)

    Magnet roller and manufacturing method thereof
    1.
    发明授权
    Magnet roller and manufacturing method thereof 失效
    磁铁辊及其制造方法

    公开(公告)号：US6021296A

    公开(公告)日：2000-02-01

    申请号：US35034

    申请日：1998-03-05

    申请人： Hajime Tamura ,  Yasuro Shiomura

    发明人： Hajime Tamura ,  Yasuro Shiomura

    IPC分类号： G03G15/09 ,  H01F7/02 ,  H01F41/02

    CPC分类号： G03G15/0921 ,  H01F41/0273 ,  H01F7/0268

    摘要： A magnet roller capable of adjusting the height and position of a magnetic force peak after formation of a roller, and easily meeting a requirement to attain a complex magnetic force pattern without significantly increasing the cost. In the magnet roller, at least two kinds of first magnet pieces and second magnet pieces different from each other in orientation characteristic of magnetic powders are fixedly disposed around the outer periphery of a shaft. The first magnet pieces is a magnet piece in which anisotropic magnetic powders are oriented in such a manner to converge from both the side surfaces and the back surface to a specific position on the front surface side. The second magnet pieces are one kind or two or more kinds of magnet pieces such as a magnet piece in which anisotropic magnetic powders are oriented at random, a magnet piece in which anisotropic magnetic powders are uniformly or radially oriented in a specific direction from the back surface side to the front surface side, and a magnet piece using isotropic magnetic powders with no orientation characteristic.

    摘要翻译： 一种能够在形成辊之后调节磁力峰值的高度和位置的磁性辊，并且容易满足达到复杂磁力图案的要求而不显着增加成本。 在磁铁辊中，在轴的外周周围固定配置至少两种磁粉取向特性彼此不同的第一磁铁片和第二磁铁片。 第一磁体片是磁铁片，其中各向异性磁性粉末以从侧表面和后表面两个会聚到前表面侧的特定位置的方式定向。 第二磁体片是各向异性磁性粉末随机取向的磁铁片之类的一种或两种以上的磁性片，其中各向异性磁性粉末从背面向特定方向均匀地或径向取向的磁片 表面侧到前表面侧，以及使用不具有取向特性的各向同性磁性粉末的磁体片。

    Composition for resin magnet, magnetic member using same and process for producing said magnetic members
    2.
    发明授权
    Composition for resin magnet, magnetic member using same and process for producing said magnetic members 失效
    用于树脂磁体的组合物，使用其的磁性构件和用于制造所述磁性构件的方法

    公开(公告)号：US06402977B1

    公开(公告)日：2002-06-11

    申请号：US09382632

    申请日：1999-08-25

    申请人： Hajime Tamura ,  Yasuro Shiomura ,  Munenori Iizuka

    发明人： Hajime Tamura ,  Yasuro Shiomura ,  Munenori Iizuka

    IPC分类号： H01F137

    CPC分类号： H01F1/083 ,  G03G15/0921

    摘要： There are disclosed a composition for resin magnets which comprises a thermoplastic resin and magnetic powders and which, when determined in a heated molten state, has specific viscosity characteristics characterized in that the almost linear line which is obtained by taking &eegr;R/&eegr;O as ordinate and &ggr; as abscissa has a slope of at most 0.02, preferably at most 0.01 within a specific temperature range in which &eegr;O falls within the range of from 2.0×106 to 1.0×107 dyne/cm2, wherein &eegr;R denotes shear stress (dyne/cm2), &eegr;O denotes yield stress (dyne/cm2) and &ggr; denotes shear rate (S−1); a magnetic member which is produced by the use of the above composition for resin magnets; and a process for efficiently producing the magnetic member from the composition by an extrusion molding in a magnetic field under specific temperature and pressure conditions. The above composition for resin magnets has specific viscosity characteristics, and thereby enables to readily afford a magnetic member having a strong magnetic force such as magnet rollers and magnet pieces. Accordingly, the magnetic member is well suited for use in the field of electrophographic equipment and electrostatic recording equipment such as copying machinery, facsimile machinery and printers.

    摘要翻译： 公开了一种用于树脂磁体的组合物，其包含热塑性树脂和磁性粉末，并且当在加热的熔融状态中确定时，具有特定的粘度特性，其特征在于以etaR / etaO为纵坐标和γ 横轴在etaO为2.0×10 6〜1.0×10 7达因/ cm 2的范围内的斜率为0.02以下，优选为0.01以下，其中η为剪切应力（达因/厘米2），etaO为 屈服应力（dyne / cm2），γ表示剪切速率（S-1）; 通过使用上述树脂磁体用组合物制造的磁性部件; 以及通过在特定温度和压力条件下的磁场中的挤出成型从组合物有效地制造磁性构件的方法。 上述用于树脂磁体的组合物具有比粘度特性，从而能够容易地获得具有强磁力的磁性构件，例如磁性辊和磁体片。 因此，磁性构件非常适用于电泳设备和复印机械，传真机械和打印机等静电记录设备领域。

    Conductive roller and imaging apparatus
    5.
    发明申请
    Conductive roller and imaging apparatus 审中-公开
    导电辊和成像装置

    公开(公告)号：US20060039721A1

    公开(公告)日：2006-02-23

    申请号：US10510755

    申请日：2003-04-11

    申请人： Yasuro Shiomura ,  Yuichiro Mori ,  Koji Yamakawa

    发明人： Yasuro Shiomura ,  Yuichiro Mori ,  Koji Yamakawa

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0808

    摘要： In a conductive roller having a rotation shaft and a conductive elastic layer arranged around the rotation shaft, a resin coating layer including a particle having JIS A hardness of 10-99 and an average particle size of 2-30 μm. An image forming apparatus utilizes the conductive roller mentioned above. Herewith, the image forming apparatus, which has excellent toner carrying property and toner charge property, provides a high quality image with no image unevenness and no image overlapping, and has an excellent durability, and the image forming apparatus installing the above conductive roller are provided.

    摘要翻译： 在具有旋转轴和布置在旋转轴周围的导电弹性层的导电辊中，具有JIS A硬度为10-99，平均粒径为2-30μm的颗粒的树脂涂层。 图像形成装置利用上述导电性辊。 因此，具有优异的调色剂携带性和调色剂带电性的图像形成装置提供了无图像不均匀，无图像重叠的高质量图像，并且具有优异的耐久性，并且设置安装上述导电辊的图像形成装置 。