Photoconductive elements having a polymeric barrier layer
    3.
    发明授权
    Photoconductive elements having a polymeric barrier layer 有权
    具有聚合物阻挡层的光导元件

    公开(公告)号:US06593046B2

    公开(公告)日:2003-07-15

    申请号:US09954907

    申请日:2001-09-18

    IPC分类号: G03G510

    摘要: Disclosed are photoconductive elements including a conductive support, e.g., an electrically conductive film, drum, or belt, on which a negatively chargeable photoconductive layer is disposed. An electrical barrier layer is disposed between the conductive support and the photoconductive layer. The barrier layer provides a high energy barrier to the injection of positive charges, but transports electrons under an applied electric field. In embodiments, the barrier layer can transport charge by electronic, or both electronic and ionic mechanisms, and, is not substantially affected by humidity changes. The barrier layer includes a polyester-co-imides, polyesterionomer-co-imides, or polyamide-co-imides having covalently bonded as repeat units in the polymer chain, aromatic tetracarbonylbisimide groups of the formula: wherein Ar1 and Ar2 respectively represent tetravalent or trivalent aromatic groups of 6 to about 20 carbon atoms, and X is O, C(CF3)2, S═O or SO2.

    摘要翻译: 公开了包括导电性支持体(例如,导电膜,鼓或带)的光电导元件,其上设置有带负电的光导电层。 电阻挡层设置在导电支撑体和光电导层之间。 阻挡层为注入正电荷提供了高能量势垒,但在施加的电场下传输电子。 在实施例中,阻挡层可以通过电子或电子和离子机制两者传输电荷,并且基本上不受湿度变化的影响。 阻挡层包括在聚合物链中共价键合作为重复单元的聚酯 - 共 - 酰亚胺,聚酯型聚异氰酸酯 - 共 - 酰亚胺或聚酰胺 - 共 - 酰亚胺,其中Ar 1和Ar 2分别表示四价或三价的芳族四羰基二酰亚胺基团 6至约20个碳原子的芳基,X是O,C(CF 3)2,S = O或SO 2。

    Condensation polymer photoconductive elements
    5.
    发明授权
    Condensation polymer photoconductive elements 有权
    聚合物聚合物光电导元件

    公开(公告)号:US07541124B2

    公开(公告)日:2009-06-02

    申请号:US11210100

    申请日:2005-08-19

    IPC分类号: G03G5/14

    摘要: The present invention relates to photoconductive elements having an electrically conductive support, an electrical barrier layer and, disposed over the barrier layer, a charge generation layer capable of generating positive charge carriers when exposed to actinic radiation. The electrical barrier layer, which restrains injection of positive charge carriers from the conductive support, comprises a crosslinker, a crosslinkable condensation polymer having as a repeating unit a planar, electron-deficient, tetracarbonylbisimide group.

    摘要翻译: 本发明涉及具有导电支持体,电阻隔层的光电导元件,并且设置在阻挡层上方,当暴露于光化辐射时能够产生正电荷载流子的电荷产生层。 限制从正电荷载体注入导电载体的电阻层包括交联剂,具有平面,电子缺乏的四羰基二酰亚胺基团作为重复单元的交联性缩合聚合物。

    Vinyl polymer photoconductive elements
    6.
    发明授权
    Vinyl polymer photoconductive elements 有权
    乙烯基聚合物光电导元件

    公开(公告)号:US07371492B2

    公开(公告)日:2008-05-13

    申请号:US11192347

    申请日:2005-07-28

    IPC分类号: G03G5/14

    CPC分类号: G03G5/102 G03G5/142 G03G5/144

    摘要: The present invention is a photoconductive element that includes an electrically conductive support, an electrical barrier layer disposed over said electrically conductive support, and disposed over said barrier layer, a charge generation layer capable of generating positive charge carriers when exposed to actinic radiation. The barrier layer includes a vinyl polymer with aromatic tetracarbonylbisimide side groups and crosslinking sites.

    摘要翻译: 本发明是一种感光元件,其包括导电支撑体,设置在所述导电支撑体上方的电阻挡层,并且设置在所述阻挡层上方,当暴露于光化辐射时能够产生正电荷载流子的电荷产生层。 阻隔层包括具有芳族四羰基双酰亚胺侧基的乙烯基聚合物和交联位点。

    Photoconductive elements having a polymeric barrier layer
    7.
    发明授权
    Photoconductive elements having a polymeric barrier layer 失效
    具有聚合物阻挡层的光导元件

    公开(公告)号:US06866977B2

    公开(公告)日:2005-03-15

    申请号:US10243702

    申请日:2002-09-14

    摘要: Disclosed are photoconductive elements including a conductive support, e.g., an electrically conductive film, drum, or belt, on which a negatively chargeable photoconductive layer is disposed. An electrical barrier layer is disposed between the conductive support and the photoconductive layer. The barrier layer provides a high energy barrier to the injection of positive charges, but transports electrons under an applied electric field. In embodiments, the barrier layer can transport charge by electronic mechanisms, and, is not substantially affected by humidity changes. The barrier layer includes a polyamide-co-imide having covalently bonded as repeat units in the polymer chain, aromatic tetracarbonylbisimide groups of the formula: wherein Ar1 and Ar2 respectively represent tetravalent or trivalent aromatic groups of 6 to about 20 carbon atoms, and X is O, C(CF3)2, S═O or SO2. The amount of aromatic tetracarbonylbisimide content in the polymer is selected such that the barrier layer can be coated onto the support as a relatively thick layer, which provides for enhanced performance as a photoconductor when used in an electrophotographic process.

    摘要翻译: 公开了包括导电性支持体(例如,导电膜,鼓或带)的光电导元件,其上设置有带负电的光导电层。 电阻挡层设置在导电支撑体和光电导层之间。 阻挡层为注入正电荷提供了高能量势垒,但在施加的电场下传输电子。 在实施例中,阻挡层可以通过电子机构输送电荷,并且基本上不受湿度变化的影响。 阻挡层包括在聚合物链中具有作为重复单元共价键合的聚酰胺 - 共 - 酰亚胺,下式的芳族四羰基双酰亚胺基团:其中Ar 1和Ar 2分别表示6至约20的四价或三价芳族基团 碳原子,X是O,C(CF 3)2,S = O或SO 2。 选择聚合物中芳族四羰基二酰亚胺含量的量使得阻挡层可以涂覆在载体上作为相对较厚的层,当用于电子照相方法时,这提供了作为光电导体的增强的性能。

    SOL GEL OVERCOATS INCORPORATING ZINC ANTIMONATE NANOPARTICLES
    8.
    发明申请
    SOL GEL OVERCOATS INCORPORATING ZINC ANTIMONATE NANOPARTICLES 有权
    包含抗氧化剂纳米粒子的溶胶凝胶过滤器(SOL GEL OVERCOATS INCORPORATING ZINC ANTIMONATE NANOPARTICLES)

    公开(公告)号:US20090136859A1

    公开(公告)日:2009-05-28

    申请号:US11945612

    申请日:2007-11-27

    IPC分类号: G03G5/043

    摘要: The present invention is directed to an electrophotographic element that comprises: an electrically conducting layer, a charge generating layer overlying the electrically conducting layer, and a charge transport layer overlying the electrically conducting layer. The charge transport layer, which can be an overcoat overlying the charge generating layer, includes the reaction product in an aqueous medium of a mixture comprising a silsesquioxane polymer and a amine-free surface treated zinc antimonate and an acid scavenger.

    摘要翻译: 本发明涉及一种电子照相元件,其包括:导电层,覆盖导电层的电荷产生层和覆盖导电层的电荷传输层。 可以是覆盖电荷产生层的覆盖层的电荷输送层包括在包含倍半硅氧烷聚合物和无胺表面处理的锑酸锌和酸清除剂的混合物的水性介质中的反应产物。