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    • 29. 发明申请
    • CARRIER AND TWO-COMPONENT DEVELOPER COMPOSED OF THE CARRIER
    • 载体和两部分组成的载体
    • US20080070150A1
    • 2008-03-20
    • US11835700
    • 2007-08-08
    • Makoto KobayashiYoshiaki KobayashiYoshiyasu Matsumoto
    • Makoto KobayashiYoshiaki KobayashiYoshiyasu Matsumoto
    • G03G9/00
    • G03G9/107G03G9/1075G03G9/113G03G9/1131G03G9/1133
    • An objective is to provide a carrier exhibiting stable charge providing ability in which sufficient charge can be provided to toner having a small particle diameter, and no image contamination such as fog caused by toner scattering via lack of electrification is generated. Another objective is to provide a carrier capable of maintaining a charging level of no interference for image formation even under the image forming condition at which a charging level for printing a number of prints continuously is difficult to be maintained. Disclosed is a carrier comprising a core particle made of ferrite possessing Mg and coated thereon, a resin, wherein the core particle has a ratio of the number of irregular-shaped core particles of at most 5%, based on the total number of core particles, and a surface of the core particle has grains having a maximum grain diameter of 2-5 μm.
    • 目的是提供一种具有稳定的电荷提供能力的载体,其中可以向具有小粒径的调色剂提供足够的电荷,并且不会产生由于通过不起电而由调色剂飞散引起的图像污染。 另一个目标是提供一种即使在连续打印多个打印件的打印水平难以维持的图像形成条件下,也能够保持对图像形成无干扰的充电水平的载体。 公开了一种载体,其包含由具有Mg并且涂覆在其上的铁氧体制成的核心颗粒,树脂,其中核心颗粒具有至多5%的不规则核心颗粒的数量的比率,基于芯颗粒的总数 ,核粒子的表面具有最大粒径为2-5μm的粒子。