METHOD AND DEVICE FOR COATING PARTICLES, AND CARRIER FOR USE IN DEVELOPER
    1.
    发明申请
    METHOD AND DEVICE FOR COATING PARTICLES, AND CARRIER FOR USE IN DEVELOPER 审中-公开
    用于涂覆颗粒的方法和装置,以及用于开发商的载体

    公开(公告)号:US20080305420A1

    公开(公告)日:2008-12-11

    申请号:US12133052

    申请日:2008-06-04

    IPC分类号: B05D7/00 B05B7/24 G03G13/06

    摘要: A method for coating particles with a coating liquid including supplying airflow to fluidize the particles; mixing the coating liquid with a spray gas in a two-fluid spray nozzle to form a two-phase flow; and atomizing the two-phase flow with the spray gas to spray a mist of the coating liquid upon the particles. A coating device including a vessel; a fluidizing device configured to supply airflow to fluidize a powder in the vessel; and a spray nozzle configured to mix the coating liquid with a spray gas to form a two-phase flow, and to atomize the two-phase flow with the spray gas to spray a mist of the coating liquid. A particulate carrier for use in electrophotographic developer including particles of a core material and a cover layer thereon and prepared by the coating method mentioned above.

    摘要翻译: 一种用涂布液涂覆颗粒的方法,包括供应气流以使颗粒流化; 将涂布液与喷射气体混合在双流体喷嘴中以形成两相流; 并用喷雾气雾化两相流,将涂布液喷雾到颗粒上。 一种包括容器的涂覆装置; 流化装置,其构造成供应气流以使容器中的粉末流化; 以及喷嘴,其被配置为将涂布液与喷雾气体混合以形成两相流,并且用喷雾气雾化两相流以喷射涂布液的雾。 一种用于电子照相显影剂的颗粒载体,包括芯材颗粒和其上的覆盖层,并通过上述涂布方法制备。

    METHOD FOR PRODUCING RESINOUS PARTICLES
    2.
    发明申请
    METHOD FOR PRODUCING RESINOUS PARTICLES 有权
    生产树脂颗粒的方法

    公开(公告)号:US20080305421A1

    公开(公告)日:2008-12-11

    申请号:US12036658

    申请日:2008-02-25

    IPC分类号: G03G9/087 G03G5/00

    摘要: There is provided a method for producing resinous particles, containing: melting a mixture containing a binder resin and at least one additive having a melting point lower than T1/2 of the binder resin so as to prepare a molten material; atomizing resinous particles from the molten material in an atmosphere having a temperature higher than Tg of the binder resin and lower than 3 times of T1/2 of the binder resin; retaining the resinous particles in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 1.5 times of T1/2 of the binder resin for 1 s to 15 s; and cooling and solidifying the resinous particles. There is also provided a method for producing resinous particles containing: melting the mixture so as to prepare a molten material; increasing a specific surface of the molten material in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 3 times of T1/2 of the binder resin, so as to form a precursor; retaining the precursor in an atmosphere having a temperature higher than Tg of the binder resin, and lower than 1.5 times of T1/2 of the binder resin for 1 ms to 10 ms; cooling and solidifying the precursor; and atomizing resinous particles from the precursor.

    摘要翻译: 提供一种生产树脂颗粒的方法,包括:熔融含有粘合剂树脂和至少一种熔点低于粘合剂树脂的T1 / 2的添加剂的混合物,以制备熔融材料; 在温度高于粘合剂树脂的Tg的气氛中,低于粘合剂树脂的T1 / 2的3倍,从熔融材料中雾化树脂颗粒; 将树脂颗粒保持在温度高于粘合剂树脂的Tg的气氛中,低于粘合剂树脂的T1 / 2的1.5倍至15秒; 并冷却并固化树脂颗粒。 还提供了一种生产树脂颗粒的方法,包括:熔化混合物以制备熔融材料; 在温度高于粘合剂树脂的Tg的气氛中增加熔融材料的比表面积,并且低于粘合剂树脂的T1 / 2的3倍,以形成前体; 将前体保持在温度高于粘合剂树脂的Tg的气氛中,低于粘合剂树脂的T1 / 2的1.5倍至1ms; 冷却和固化前体; 并从前体中雾化树脂颗粒。