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    Multiactive electrophotographic element
    5.
    发明授权
    Multiactive electrophotographic element 失效
    多电子照相元件

    公开(公告)号：US4840861A

    公开(公告)日：1989-06-20

    申请号：US168835

    申请日：1988-03-16

    申请人： William J. Staudenmayer ,  David S. Weiss ,  Joseph A. Pavlisko

    发明人： William J. Staudenmayer ,  David S. Weiss ,  Joseph A. Pavlisko

    IPC分类号： G03G5/05

    CPC分类号： G03G5/0564 ,  G03G5/056

    摘要： An improved reusable multiactive electrophotographic element has a charge-transport layer comprising a triarylamine charge-transport material in a mixture of binders comprising poly[2,2-bis(4-hydroxyphenyl)propane carbonate] and a polyester of 2,2-bis(4-hydroxyphenyl)propane and terephthalic and isophthalic acids, with the weight ratio of the polycarbonate to the polyester being in the range of 9:1 to 3:7.

    摘要翻译： 改进的可重复使用的多反应电子照相元件具有电荷传输层，其包含在包含聚[2,2-双（4-羟基苯基）丙烷碳酸酯]和2,2-双（4-羟基苯基）丙烷碳酸酯的聚酯的粘合剂的混合物中的三芳基胺电荷转移材料， 4-羟基苯基）丙烷和对苯二甲酸和间苯二甲酸，其中聚碳酸酯与聚酯的重量比在9:1至3:7的范围内。

    Condensation polymer photoconductive elements
    6.
    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：US07964328B2

    公开(公告)日：2011-06-21

    申请号：US11829984

    申请日：2007-07-30

    申请人： Wayne T. Ferrar ,  Xin Jin ,  David S. Weiss

    发明人： Wayne T. Ferrar ,  Xin Jin ,  David S. Weiss

    IPC分类号： G03G5/047

    CPC分类号： G03G5/0592 ,  G03G5/0571 ,  G03G5/0575 ,  G03G5/0637 ,  G03G5/0651

    摘要： The present invention relates to photoconductive elements having an electrically conductive support, an electrical barrier layer and, disposed over the conductive 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 crosslinkable condensation polymer having as a repeating unit a planar, electron-deficient, tetracarbonylbisimide group and optionally a crosslinker.

    摘要翻译： 本发明涉及具有导电支撑体，电阻挡层的光电导元件，并且设置在导电层上方，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。 抑制正电荷载体从导电载体注入的电阻层包含具有平面，电子缺陷型，四羰基双酰亚胺基团和任选的交联剂作为重复单元的可交联缩聚物。

    Photoconductive elements having a polymeric barrier layer
    8.
    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

    申请人： Louis J. Sorriero ,  Michel F. Molaire ,  Marie B. O'Regan ,  Wayne T. Ferrar ,  David S. Weiss ,  Jane Robin Cowdery

    发明人： Louis J. Sorriero ,  Michel F. Molaire ,  Marie B. O'Regan ,  Wayne T. Ferrar ,  David S. Weiss ,  Jane Robin Cowdery

    IPC分类号： G03G510

    CPC分类号： C08G73/1082 ,  C08G73/14 ,  C08G73/16 ,  G03G5/142

    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。

    Sintering metal parts with a release agent
    10.
    发明授权
    Sintering metal parts with a release agent 失效
    用脱模剂烧结金属部件

    公开(公告)号：US5409660A

    公开(公告)日：1995-04-25

    申请号：US44640

    申请日：1993-04-08

    申请人： Christopher G. Alpha ,  Leslie E. Hampton ,  David S. Weiss

    发明人： Christopher G. Alpha ,  Leslie E. Hampton ,  David S. Weiss

    IPC分类号： B01J37/08 ,  B22F3/11 ,  B22F5/00 ,  F01N3/28 ,  B22F7/00 ,  B22F1/02

    CPC分类号： B22F5/003 ,  B01J37/08 ,  B22F3/1115 ,  F01N3/2803 ,  F01N2330/14

    摘要： A release agent for producing sintered metal parts using the release agent. The method includes applying a release agent to contacting surfaces of at least two green metal parts, forming an assembly of the parts, sintering the assembly, and separating the parts which are in contact with the release agent. The release agent is a mixture of alumina and a vehicle having a vaporization temperature of less than about 100.degree. C. at atmospheric pressure, and is nonreactive with the alumina and the green metal parts. When at least one of the parts having a contacting surface is a honeycomb structure, the median particle diameter of the alumina is no greater than about 3 micrometers.

    摘要翻译： 用于使用脱模剂制造烧结金属部件的脱模剂。 该方法包括将脱模剂施用于至少两个生坯金属部件的接触表面，形成部件的组件，烧结组件以及分离与脱模剂接触的部件。 脱模剂是在大气压下具有小于约100℃的汽化温度的氧化铝和载体的混合物，并且与氧化铝和生坯金属部件无反应。 当具有接触表面的部分中的至少一个是蜂窝结构时，氧化铝的中值粒径不大于约3微米。