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    Surface-treated toner particles, process for forming, and electrostatographic developer containing same
    1.
    发明公开
    Surface-treated toner particles, process for forming, and electrostatographic developer containing same 有权
    经表面处理的调色剂颗粒，生产过程中，和电子照相显影剂含有调色剂颗粒

    公开(公告)号：EP1365292A3

    公开(公告)日：2004-11-03

    申请号：EP03009815.6

    申请日：2003-05-12

    申请人： Eastman Kodak Company

    发明人： Srinivasan, Satyanarayan A. ,  Tyagi, Dinesh

    IPC分类号： G03G9/097

    CPC分类号： G03G9/09725 ,  G03G9/0808 ,  G03G9/09791

    摘要： An electrostatographic toner composition consists essentially of noncrosslinked linear polymeric toner particles, about 0.7wt.% to about 4 wt.% of hydrophobic silica particles disposed on the surface of the toner particles, and about 0.1 wt.% to about 2 wt.% of particles of a fatty acid metal salt disposed on the surface of the toner particles, wherein the weight percentages of the hydrophobic silica particles and the particles of a fatty acid metal salt are based on the weight of the polymeric toner particles. An electrostatographic developer is formed by mixing the toner composition so prepared with hard magnetic carrier particles. A process for forming an electrostatographic toner composition comprises: providing noncrosslinked polymeric toner particles of a selected particle size, and dry blending the polymeric toner particles with a mixture consisting essentially of about 0.7 wt.% to about 4 wt.% of hydrophobic silica particles and about 0.1 wt.% to about 2 wt.% of particles of a fatty acid metal salt, thereby forming a toner composition wherein the silica and fatty acid metal salt particles are disposed on the surface of the toner particles.