公开(公告)号：US06555282B2

公开(公告)日：2003-04-29

申请号：US09962587

申请日：2001-09-26

Applicant: Hiroyoshi Okuno ,  Akira Matsumoto ,  Tsutomu Kubo ,  Teigen Lee ,  Yuusaku Shibuya ,  Yutaka Sugizaki

Inventor： Hiroyoshi Okuno ,  Akira Matsumoto ,  Tsutomu Kubo ,  Teigen Lee ,  Yuusaku Shibuya ,  Yutaka Sugizaki

IPC: G03G908

CPC classification number: G03G9/0827 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/09716 ,  G03G9/09725

Abstract: A toner for developing an electronic latent image, including toner particles containing a binder resin and a colorant, and an external additive, is provided. The external additive contains silica formed by a sol-gel method of which the surface is subjected to hydrophobic treatment and which has an average primary particle size of 80 to 300 nm, a water content of 3 to 15% and a volume resistivity of 1×1013 &OHgr;cm or more. The invention further provides an image forming method and an image forming apparatus using the same. The toner for developing an electrostatic latent image is good in transferability over a long period of time and gives a high image quality without causing an image defect.

Abstract translation: 提供了一种用于显影电子潜像的调色剂，包括含有粘合剂树脂和着色剂的调色剂颗粒和外部添加剂。 外部添加剂含有通过溶胶 - 凝胶法形成的二氧化硅，其表面进行疏水处理，其平均初级粒径为80〜300nm，水含量为3〜15％，体积电阻率为1×10 13Ω·Ω·cm 或者更多。 本发明还提供了一种图像形成方法和使用该图像形成方法的图像形成装置。 用于显影静电潜像的调色剂在长时间的转印性方面是良好的，并且在不引起图像缺陷的情况下给出高图像质量。

公开(公告)号：US06403274B2

公开(公告)日：2002-06-11

申请号：US09828915

申请日：2001-04-10

Applicant: Kazufumi Tomita ,  Hiroyuki Tanaka ,  Hirotaka Matsuoka ,  Teigen Lee ,  Seiichi Takagi

Inventor： Kazufumi Tomita ,  Hiroyuki Tanaka ,  Hirotaka Matsuoka ,  Teigen Lee ,  Seiichi Takagi

IPC: G03G900

CPC classification number: G03G9/097 ,  G03G9/0804 ,  G03G9/0821 ,  G03G9/0825 ,  G03G9/08797 ,  G03G9/09708

Abstract: An electrophotographic toner excellent in coloring property, fixing property, OHP transmittance and charging property, a process for producing the same, and a two-component developer are provided. The electrophotographic toner contains at least a binder resin, a colorant, a releasing agent and inorganic fine particles, in which the toner has a conglobation degree of about from 100 to 130, the releasing agent has an average particle diameter of about from 0.1 to 1 &mgr;m, a ratio of a major axis and a minor axis of about from 1.1 to 10, and the inorganic particles are dispersed in the toner particles.

Abstract translation: 提供着色性，定影性，OHP透光率和充电性优异的电子照相调色剂，其制造方法和双组分显影剂。 电子照相调色剂至少含有粘合剂树脂，着色剂，脱模剂和无机细颗粒，其中调色剂的共聚度为约100至130，脱模剂的平均粒径为约0.1至1 母体，长轴和短轴的比例为约1.1至10，并且无机颗粒分散在调色剂颗粒中。