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    • 8. 发明申请
    • PRODUCTION PROCESS OF TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT
    • 用于静电图像发展的调色剂的生产工艺
    • US20120270149A1
    • 2012-10-25
    • US13449405
    • 2012-04-18
    • Tomoko MINESaburou HIRAOKATomomi OSHIBATatsuya NAGASE
    • Tomoko MINESaburou HIRAOKATomomi OSHIBATatsuya NAGASE
    • G03G9/087
    • G03G9/0806G03G9/0819G03G9/0827
    • Disclosed is a production process of a toner for electrostatic image development, by which excellent toner particle size-controlling ability and moreover the sharpening of a particle size distribution are achieved.The production process is a production process of a toner for electrostatic image development, which is composed of toner particles containing at least a binder resin. The process has an aggregating and fusion-bonding step of adding a aggregating agent containing polysilicato-iron into an aqueous medium in which fine binder resin particles formed of the binder resin have been dispersed, thereby aggregating the fine binder resin particles, and an aggregation stopper-adding step of adding an aggregation stopper composed of a polyvalent organic acid or a salt thereof. In the production process of the toner for electrostatic image development, the polyvalent organic acid or the salt thereof is preferably an amino acid or a salt thereof.
    • 公开了用于静电图像显影的调色剂的制备方法,通过该方法可获得优异的调色剂粒度控制能力以及进一步提高粒度分布的锐化。 制造方法是静电图像显影用调色剂的制造方法,其由至少含有粘结剂树脂的调色剂颗粒构成。 该方法具有将含有聚硅酸铁的凝集剂添加到其中由粘合剂树脂形成的细粘合剂树脂颗粒已经分散的水性介质中的聚集和熔合步骤,从而聚集细粘合剂树脂颗粒和聚集塞 添加由多价有机酸或其盐组成的聚集塞子的添加步骤。 在静电图像显影用调色剂的制造方法中,多价有机酸或其盐优选为氨基酸或其盐。