公开(公告)号：US06368765B2

公开(公告)日：2002-04-09

申请号：US09765392

申请日：2001-01-22

申请人： Mitsuyoshi Izu ,  Nobuyasu Makino ,  Tomotsugu Miyamoto ,  Yasuaki Iwamoto ,  Ryoichi Ito ,  Kazuyuki Yazaki

发明人： Mitsuyoshi Izu ,  Nobuyasu Makino ,  Tomotsugu Miyamoto ,  Yasuaki Iwamoto ,  Ryoichi Ito ,  Kazuyuki Yazaki

IPC分类号： G03G906

CPC分类号： G03G9/0808 ,  Y10T428/2982

摘要： A method of producing a toner for developing latent electrostatic images includes the steps of preliminarily grinding a toner composition having at least a binder resin and a coloring agent to prepare a preliminarily ground product, and finely pulverizing the preliminarily ground product using a pulverizer to produce toner particles, wherein the preliminarily ground product satisfies conditions (1) and (2): Dv≧D10  (1) D50

摘要翻译： 制备用于显影静电潜像的调色剂的方法包括以下步骤：预先研磨具有至少粘合剂树脂和着色剂的调色剂组合物以制备预先研磨的产物，并使用粉碎机将预先研磨的产物细粉碎以产生调色剂 颗粒，其中预先研磨的产物满足条件（1）和（2）：其中Dv是预先研磨产物的重量平均直径，D10是当累积的测量时颗粒的累积颗粒达到10％时的重量平均直径 颗粒分布，D50是当累积粒子分布的测量时颗粒的累积数达到50％时的重量平均直径。

公开(公告)号：US06503681B2

公开(公告)日：2003-01-07

申请号：US09740865

申请日：2000-12-21

申请人： Nobuyasu Makino ,  Tomotsugu Miyamoto ,  Mitsuyoshi Izu ,  Ryoichi Ito ,  Yasuaki Iwamoto ,  Kazuyuki Yazaki

发明人： Nobuyasu Makino ,  Tomotsugu Miyamoto ,  Mitsuyoshi Izu ,  Ryoichi Ito ,  Yasuaki Iwamoto ,  Kazuyuki Yazaki

IPC分类号： G03G900

CPC分类号： G03G9/0819 ,  G03G9/0808 ,  G03G9/0827

摘要： A two-step process for the production of a toner for developing electrostatic images, including a first pulverizing step wherein a toner composition containing a binder and a coloring agent is pulverized to obtain preliminarily pulverized particles having a weight average particle diameter of 20-100 &mgr;m and containing no more than 50% by weight of particles having roundness of 0.90 or less, and a second pulverizing step wherein the preliminarily pulverized particles are finely pulverized to obtain finely pulverized particles having a weight average particle diameter of 5-13 &mgr;m and containing no more than 30% by weight of particles having roundness of 0.90 or less and no more than 15%, based on the total number of particles of the finely pulverized particles, of particles having a particle diameter of 5 &mgr;m or less.

摘要翻译： 制造用于显影静电图像的调色剂的两步法，包括第一粉碎步骤，其中将含有粘合剂和着色剂的调色剂组合物粉碎，以获得重量平均粒径为20-100μm的预先粉碎的颗粒 并且含有不超过50重量％的圆度为0.90以下的颗粒，以及第二粉碎步骤，其中将预先粉碎的颗粒细粉碎以获得重均粒径为5-13μm的微粉碎颗粒，并且不含 大于30重量％的粒径为0.90以下，粒径为5μm以下的颗粒总数为15％以下的微粒。