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    Electrophotographic toner and development process with improved image and fusing quality
    3.
    发明公开
    Electrophotographic toner and development process with improved image and fusing quality 审中-公开
    一种电子照相调色剂和显影方法具有改进的定影质量图像和

    公开(公告)号：EP1258785A3

    公开(公告)日：2009-08-19

    申请号：EP02010123.4

    申请日：2002-05-10

    申请人： Eastman Kodak Company

    发明人： Fields, Robert D. ,  Foster, Thomas J. ,  Jadwin, Thomas A. ,  Nielsen, Paul L. ,  Tyagi, Dinesh

    IPC分类号： G03G15/20 ,  G03G9/097

    CPC分类号： G03G9/1136 ,  G03G9/09708 ,  G03G9/09725 ,  G03G9/09733 ,  G03G9/1075 ,  G03G9/1133 ,  G03G9/1134 ,  G03G9/1135 ,  G03G13/09 ,  G03G13/20

    摘要： Development systems and methods for developing using toner are disclosed. The present invention further discloses developers used in development systems. With respect to the development system, a development system is disclosed which includes a supply of dry developer mixture which contains toner particles and hard magnetic carrier particles. The development system further includes a non-magnetic, cylindrical shell for transporting the developer between the supply and the development zone, wherein the shell can be rotatable or stationary. A rotating magnetic core of a pre-selected magnetic field strength and means for rotating at least the magnetic core to provide for the transport of the toner particles from the shell to an electrostatic image also provided as part of the development system. The development system of the present invention further includes a fuser roll which is coated with a silicone rubber or other low surface energy elastomer or resin. The fuser roll is preferably in a pressure contact arrangement with a backup or pressure roll. The images resulting from the development system of the present invention have an excellent combination of properties, in particular, the prints resulting from the development process of the present invention have improved image quality in combination with excellent fusing quality. A method for developing electrostatic images with toner is further disclosed, for example, involving the above-described development system.

    Development systems for magnetic toners and toners having reduced magnetic loadings
    4.
    发明公开
    Development systems for magnetic toners and toners having reduced magnetic loadings 有权
    用于磁性调色剂的调色剂和具有低磁性材料内容开发系统

    公开(公告)号：EP1220044A3

    公开(公告)日：2005-11-16

    申请号：EP01130250.2

    申请日：2001-12-19

    申请人： EASTMAN KODAK COMPANY

    发明人： Crichton, John F. ,  Fields, Robert D. ,  Jadwin, Thomas A. ,  Stelter, Eric C.

    IPC分类号： G03G13/09 ,  G03G9/083

    CPC分类号： B82Y15/00 ,  G03G9/083 ,  G03G9/097 ,  G03G9/09708 ,  G03G9/09733 ,  G03G13/09 ,  G03G2215/0013

    摘要： Development systems and methods for developing using magnetic toner are disclosed. The present invention further discloses developers used in development systems as well as the toner used in developer for magnetic ink character recognition printing. With respect to the development system, a development system is disclosed which includes a supply of dry developer mixture which contains magnetic toner particles and hard magnetic carrier particles. The development system further includes a non-magnetic, cylindrical shell for transporting the developer between the supply and the development zone, wherein the shell can be rotatable or stationary. A rotating magnetic core of a pre-selected magnetic field strength and means for rotating at least the magnetic core to provide for the transport of the toner particles from the shell to an electrostatic image also provided as part of the development system. A method for developing electrostatic image with magnetic toner is further disclosed, for example, involving the above-described development system. Magnetic toner particles having a low magnetic loading such as on the order of 28% by weight or less, based on the weight of the toner are further described wherein these magnetic toners can include a spacing agent on the surface of the magnetic toner particles. A developer is further disclosed which contains the magnetic toner particles of the present invention with hard magnetic carrier particles. Other developer compositions are also described.