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    • 6. 发明授权
    • Process for producing toner powder
    • 生产调色剂粉的方法
    • US4784333A
    • 1988-11-15
    • US110281
    • 1987-10-20
    • Norio HikakeNobuyuki AsaokaNaoto Kitamori
    • Norio HikakeNobuyuki AsaokaNaoto Kitamori
    • B07B7/086G03G9/08B02C19/12
    • B07B7/086G03G9/0817
    • Colored resinous particles suitable for use in toner powder for developing electrostatic latent images are produced from a pulverized feed at a good production efficiency and with a sharp particle size distribution through a classifying and pulverizing system including a second pulverization step associated with a second classification step in addition to a first classification step, such a second classification step and first pulverization step. The pulverized feed supplies to the first classification step is classified into a first classified fine powder and a first coarse powder, which is then pulverized in the first pulverization step and recycled to the first classification step. The first classified fine powder is supplied to the second classification step and classified therein into a second classified fine powder and a second coarse powder, which is then pulverized in the second pulverization step and recycled to the first classification step or the second classification step. The second pulverization step is effected under the action of an impact force which is smaller than that exerted in the first pulverization step.
    • 适于用于显影静电潜像的调色剂粉末中的着色树脂颗粒由粉碎的原料以良好的生产效率和通过分级和粉碎系统的尖锐的粒度分布产生,包括与第二分级步骤相关的第二粉碎步骤 除了第一分级步骤,这样的第二分级步骤和第一粉碎步骤。 将第一分级工序的粉碎后的原料供给到第一分级细粉末和第一粗粉末中,然后在第一粉碎工序中粉碎,再循环至第一分级工序。 将第一分级细粉供给到第二分级步骤,并分类为第二分级细粉和第二粗粉,然后在第二粉碎步骤中将其粉碎并再循环至第一分级步骤或第二分级步骤。 第二粉碎步骤在小于在第一粉碎步骤中施加的冲击力的作用下进行。