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    MAGNETIC CARRIERS FOR ELECTROPHOTOGRAPHIC DEVELOPER, PROCESSES FOR PRODUCING SAME, AND TWO-COMPONENT DEVELOPER
    41.
    发明公开
    MAGNETIC CARRIERS FOR ELECTROPHOTOGRAPHIC DEVELOPER, PROCESSES FOR PRODUCING SAME, AND TWO-COMPONENT DEVELOPER 审中-公开
    ，电力照相显影剂，工艺磁性支撑其制造和两个组件开发者

    公开(公告)号：EP2857903A4

    公开(公告)日：2016-01-06

    申请号：EP13796970

    申请日：2013-05-30

    申请人： TODA KOGYO CORP

    发明人： KINOSHITA KAORI ,  KURITA EIICHI

    IPC分类号： G03G9/107 ,  G03G9/10 ,  G03G9/113

    CPC分类号： G03G9/1075 ,  G03G9/10 ,  G03G9/107 ,  G03G9/1131 ,  G03G9/1133 ,  G03G9/1135 ,  G03G9/1136

    摘要： The present invention relates to a magnetic carrier for an electrophotographic developer comprising spherical composite core particles comprising at least ferromagnetic iron oxide fine particles and a cured phenol resin, and having an average particle diameter of 20 to 60 µ m, the magnetic carrier for an electrophotographic developer satisfying the formula (1): à 1 - à 0 = -2 to 0 wherein à 0 represents a saturation magnetization (Am 2 /kg) of the carrier particles having a particle diameter in the vicinity of the average particle diameter of the magnetic carrier for an electrophotographic developer; and à 1 represents a saturation magnetization (Am 2 /kg) of the carrier particles having a particle diameter of less than 20 µ m, and a two-component system developer using the magnetic carrier. The two-component system developer of the present invention includes a magnetic carrier used for an electrophotographic developer which can exhibit a good durability, is free from occurrence of carrier adhesion, and can maintain a high quality of images produced for a long period of time, and comprises the magnetic carrier for an electrophotographic developer and a toner.

    MAGNETIC CARRIER AND TWO-COMPONENT DEVELOPER
    42.
    发明公开
    MAGNETIC CARRIER AND TWO-COMPONENT DEVELOPER 审中-公开
    澳大利亚麦克唐纳耳环

    公开(公告)号：EP2884339A1

    公开(公告)日：2015-06-17

    申请号：EP13828253.8

    申请日：2013-08-05

    申请人： Canon Kabushiki Kaisha

    发明人： BABA, Yoshinobu ,  ISHIGAMI, Koh ,  HAMA, Masayuki ,  KAMAE, Kentaro ,  KAWAKAMI, Hiroaki

    IPC分类号： G03G9/107 ,  G03G9/113

    CPC分类号： G03G9/1075 ,  G03G9/107 ,  G03G9/1133 ,  G03G9/1135 ,  G03G9/1136 ,  G03G9/1137

    摘要： Provided is an exceptionally durable magnetic carrier of excellent performance in regard to leakage, white spots, imparting of static electricity, and development in weak electric fields. A magnetic carrier having a magnetic body dispersion-type resin carrier core containing a magnetic body and a binder resin, and a covering resin on the outer surface of the magnetic body dispersion-type resin carrier core; wherein the magnetic carrier is characterized in that the magnetic body has a magnetic body (A) having a shape with no vertex and a magnetic body (B) having a shape with a vertex; the magnetic body (B) has a number-average particle diameter of 0.40 to 2.00 µm; and the area ratio of the magnetic body (B) is larger than the area ratio of the magnetic body (A) in a region 1.0 µm below the outer surface of the magnetic body dispersion-type resin carrier core as seen in a backscattered electron image of a cross-section of the magnetic body dispersion-type resin carrier core captured with a scanning electron microscope.

    摘要翻译： 提供了一种在漏电，白点，静电赋能以及弱电场发展方面性能优异的特别耐用的磁性载体。 具有含有磁性体和粘结剂树脂的磁性体分散型树脂载体芯的磁性载体和在该磁性体分散型树脂载体芯的外表面上的覆盖树脂; 其特征在于，所述磁性体具有具有无顶点形状的磁性体（A）和具有顶点形状的磁性体（B） 磁性体（B）的数均粒径为0.40〜2.00μm， 并且磁体（B）的面积比大于在背散射电子图像中看到的磁体分散型树脂载体芯的外表面以下1.0μm的区域中的磁体（A）的面积比 用扫描电子显微镜捕获的磁体分散型树脂载体芯的横截面。

    Resin-coated carrier for electrophotographic developer and electrophotographic developer using the resin-coated carrier
    44.
    发明公开
    Resin-coated carrier for electrophotographic developer and electrophotographic developer using the resin-coated carrier 有权
    的电子照相显影剂和电子照相显影剂用树脂包覆载体的树脂包覆载体

    公开(公告)号：EP2784588A1

    公开(公告)日：2014-10-01

    申请号：EP14162366.0

    申请日：2014-03-28

    申请人： Powdertech Co., Ltd.

    发明人： Ishikawa, Makoto ,  Uemura, Tetsuya ,  Aoki, Masashi

    IPC分类号： G03G9/107 ,  G03G9/113

    CPC分类号： G03G9/1132 ,  G03G9/1075 ,  G03G9/1133 ,  G03G9/1134 ,  G03G9/1135 ,  G03G9/1136

    摘要： Provided is a resin-coated carrier for an electrophotographic developer, wherein the surface of a magnetic particle is coated with a mixed resin composed of two resins, and when the two resins are denoted by the resin 1 and the resin 2, respectively, the relative difference between the respective adsorbed moisture amounts of the resin 1 and the resin 2 at a temperature of 30°C and a relative humidity of 80% satisfies the following formula (1): 1 ≤ ax - b ⁢ 100 - x ≤ 10
    a: the adsorbed moisture content (% by weight) of the resin 1
    b: the adsorbed moisture content (% by weight) of the resin 2
    x: the content percentage of the resin 1 (0

    摘要翻译： 提供了一种用于在电子照相显影剂，worin磁性粒子的表面涂布有两种树脂组成的混合树脂，并且当两种树脂由树脂1和树脂2表示，分别是相对于树脂包覆载体 树脂1的respectivement吸附的水分量，并在30℃的温度下的树脂2和80％SATIS的外资企业下述式（1）的相对湿度之间的差别：1个‰¤斧 - b¢100 - X‰¤ 10A：使树脂2 x的吸附的水分含量（重量％）：树脂1b的吸附的水分含量（重量％）的树脂1（0

    METHOD FOR PRODUCING MAGNETIC CARRIER AND MAGNETIC CARRIER PRODUCED USING THE SAME PRODUCTION METHOD
    47.
    发明公开
    METHOD FOR PRODUCING MAGNETIC CARRIER AND MAGNETIC CARRIER PRODUCED USING THE SAME PRODUCTION METHOD 有权
    VERFAHREN ZUR HERSTELLUNG EINESMAGNETTRÄGERS在DIESEM VERFAHREN HERGESTELLTERMAGNETTRÄGER

    公开(公告)号：EP2444848A1

    公开(公告)日：2012-04-25

    申请号：EP10789197.0

    申请日：2010-06-11

    申请人： Canon Kabushiki Kaisha

    发明人： NAKA, Takeshi ,  BABA, Yoshinobu ,  ISHIGAMI, Koh ,  SHIOTARI, Yoshiaki ,  KAMAE, Kentaro

    IPC分类号： G03G9/113

    CPC分类号： G03G9/107 ,  G03G9/1075 ,  G03G9/113 ,  G03G9/1131 ,  G03G9/1132 ,  G03G9/1135

    摘要： When a surface of magnetic carrier core particles is coated with coating resin composition particles, the coating is conducted so that a surface of the magnetic carrier is free from cracks and chips and has fewer residual resin composition particles and a coating is uniform. In the method, a rotor having a plurality of stirring members on a surface thereof is rotated to coat the surface of magnetic carrier core particles with the resin composition particles. When the coating is conducted, while repeatedly conducting transportation in a direction of a driver and transportation in an anti-driver direction, the surface of the magnetic carrier core particles is coated with the resin composition. The resin composition particles has a 50% particle diameter (D50) based on volume of 0.2 µm or more to 6.0 µm or less and the proportion of particles of 10.0 µm or more is 2.0% by volume or less.

    摘要翻译： 当磁性载体芯颗粒的表面涂覆有涂覆树脂组合物颗粒时，进行涂层，使得磁性载体的表面没有裂纹和碎屑，并且具有较少的残留树脂组合物颗粒和涂层是均匀的。 在该方法中，在其表面上具有多个搅拌构件的转子旋转以用树脂组合物颗粒涂覆磁性载体芯颗粒的表面。 当进行涂层时，在沿着驾驶员的方向反复进行输送并沿反向驱动方向运送时，磁性载体芯颗粒的表面涂覆有树脂组合物。 树脂组合物颗粒的体积为0.2μm以上至6.0μm以下的粒径为50％（D50），10.0μm以上的粒子的比例为2.0体积％以下。

    Electrophotographic toner and development process with improved image and fusing quality
    50.
    发明公开
    Electrophotographic toner and development process with improved image and fusing quality 审中-公开
    一种电子照相调色剂和显影方法具有改进的定影质量图像和

    公开(公告)号：EP1258785A3

    公开(公告)日：2009-08-19

    申请号：EP02010123.4

    申请日：2002-05-10

    申请人： Eastman Kodak Company

    发明人： Fields, Robert D. ,  Foster, Thomas J. ,  Jadwin, Thomas A. ,  Nielsen, Paul L. ,  Tyagi, Dinesh

    IPC分类号： G03G15/20 ,  G03G9/097

    CPC分类号： G03G9/1136 ,  G03G9/09708 ,  G03G9/09725 ,  G03G9/09733 ,  G03G9/1075 ,  G03G9/1133 ,  G03G9/1134 ,  G03G9/1135 ,  G03G13/09 ,  G03G13/20

    摘要： Development systems and methods for developing using toner are disclosed. The present invention further discloses developers used in development systems. With respect to the development system, a development system is disclosed which includes a supply of dry developer mixture which contains toner particles and hard magnetic carrier particles. The development system further includes a non-magnetic, cylindrical shell for transporting the developer between the supply and the development zone, wherein the shell can be rotatable or stationary. A rotating magnetic core of a pre-selected magnetic field strength and means for rotating at least the magnetic core to provide for the transport of the toner particles from the shell to an electrostatic image also provided as part of the development system. The development system of the present invention further includes a fuser roll which is coated with a silicone rubber or other low surface energy elastomer or resin. The fuser roll is preferably in a pressure contact arrangement with a backup or pressure roll. The images resulting from the development system of the present invention have an excellent combination of properties, in particular, the prints resulting from the development process of the present invention have improved image quality in combination with excellent fusing quality. A method for developing electrostatic images with toner is further disclosed, for example, involving the above-described development system.