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    • 1. 发明授权
    • Electrophotographic carrier, method of manufacturing the same, and image forming method employing the same
    • 电子照相载体及其制造方法以及使用其的成像方法
    • US07879521B2
    • 2011-02-01
    • US11755957
    • 2007-05-31
    • Hiroyuki KozuruYoshiaki KobayashiTatsuya Nagase
    • Hiroyuki KozuruYoshiaki KobayashiTatsuya Nagase
    • G03G9/00
    • G03G15/0818G03G9/113G03G9/1131G03G9/1138G03G9/1139
    • An objective is to provide a highly durable carrier for a developer which is capable of forming a high-definition image stably with no deterioration of a developing property since the carrier resistance and the charging ability remain stable even though the developer is used for a long duration; a method of manufacturing the carrier; and an image forming method employing the same. Disclosed is an electrophotographic carrier comprising a carrier core material and provided thereon, a resin-coated layer comprising charge control particles and low-resistive particles, wherein an initial carrier resistance is 5×108-3×1010 Ωcm; a concentration of the low-resistive particles grows higher toward a surface of the layer from an inner part of the layer; and a concentration of the charge control particles grows lower toward a surface of the layer from an inner part of the layer.
    • 目的是为显影剂提供高度耐用的载体,其能够稳定地形成高清晰度图像,而不会劣化显影性能,因为即使长时间使用显影剂,载体电阻和充电能力保持稳定 ; 制造载体的方法; 以及采用该图像形成方法的图像形成方法。 公开了一种电子照相载体,其包含载体芯材料,其上设置有包含电荷控制颗粒和低电阻颗粒的树脂涂层,其中初始载流子电阻为5×108-3×1010Ω·cm; 低电阻粒子的浓度从层的内部向层的表面生长较高; 并且电荷控制颗粒的浓度从该层的内部朝向该层的表面生长较低。