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    Styrene butadiene copolymers as binders in mixed pigment generating layer
    4.
    发明授权
    Styrene butadiene copolymers as binders in mixed pigment generating layer 失效
    苯乙烯丁二烯共聚物作为混合颜料生成层中的粘合剂

    公开(公告)号：US5066557A

    公开(公告)日：1991-11-19

    申请号：US459339

    申请日：1989-12-29

    申请人： Susan Robinette ,  Anita P. Lynch ,  Thomas R. Hoffend ,  Edward F. Grabowski ,  Kathleen M. Carmichael

    发明人： Susan Robinette ,  Anita P. Lynch ,  Thomas R. Hoffend ,  Edward F. Grabowski ,  Kathleen M. Carmichael

    IPC分类号： G03G5/047 ,  G03G5/05 ,  G03G5/06 ,  G03G5/08 ,  G03G5/087

    CPC分类号： G03G5/0696 ,  G03G5/047 ,  G03G5/0525 ,  G03G5/087

    摘要： A charge generating layer for an electrophotographic imaging member is provided containing trigonal selenium and phthalocyanine photoconductive particles dispersed in a film forming polymer binder. The film forming polymer binder may be a styrene butadiene copolymer having a weight percent styrene to butadiene content of about 85:15 to about 95:5 and a glass transition temperature range of about 50.degree. C. to about 60.degree. C. A process for producing the homogeneous dispersion of photoconductive particles includes separately milling the trigonal selenium particles and the phthalocyanine particles to approprite particle sizes, and dispersing the separately milled particles in the film forming polymer binder.

    摘要翻译： 提供了一种用于电子照相成像构件的电荷产生层，其包含分散在成膜聚合物粘合剂中的三角形硒和酞菁光电导颗粒。 成膜聚合物粘合剂可以是苯乙烯 - 丁二烯含量的重量百分比为约85:15至约95:5，玻璃化转变温度范围为约50℃至约60℃的苯乙烯丁二烯共聚物。 产生光导电颗粒的均匀分散体包括单独研磨三角形硒颗粒和酞菁颗粒以适应颗粒尺寸，并将分开磨碎的颗粒分散在成膜聚合物粘合剂中。

    Control of the acid/base environment in photoconductive elements
    6.
    发明授权
    Control of the acid/base environment in photoconductive elements 失效
    光电导元件酸/碱环境的控制

    公开(公告)号：US5356741A

    公开(公告)日：1994-10-18

    申请号：US71360

    申请日：1993-06-03

    申请人： Kathleen M. Carmichael ,  Sharon E. Normandin ,  Donald P. Sullivan ,  Edward F. Grabowski ,  Emery G. Tokoli

    发明人： Kathleen M. Carmichael ,  Sharon E. Normandin ,  Donald P. Sullivan ,  Edward F. Grabowski ,  Emery G. Tokoli

    IPC分类号： G03G5/00 ,  G03G5/04 ,  G03G5/05

    CPC分类号： G03G5/0503

    摘要： A method of controlling variations in electrical characteristics in electrophotographic imaging devices by eliminating the effect of acidic or basic impurities in a photoconductive element. A solution of a weak acid or weak base and a conjugate salt of the weak acid and the weak base is incorporated into a layer of the photoconductive element. In a process for producing the photoconductive element, a substrate is coated with a first dispersion to form a charge generating layer, and then coated with a second dispersion to form a charge transporting layer, wherein there is incorporated in at least one of the first and second dispersions a solution of a weak acid or weak base and the conjugate salt of the weak acid and weak base in an amount effective to reduce variations in the dark development potential (V.sub.DDP) and background potential (V.sub.BG) characteristics of the imaging devices.

    摘要翻译： 通过消除光电导元件中的酸性或碱性杂质的影响来控制电子照相成像装置中电特性的变化的方法。 将弱酸或弱碱和弱酸和弱碱的共轭盐的溶液并入光电导元件的层中。 在制造光电导元件的方法中，用第一分散体涂覆基板以形成电荷产生层，然后用第二分散体涂覆以形成电荷输送层，其中，将至少一个第一和 第二分散弱酸或弱碱的溶液和弱酸和弱碱的共轭盐，其量可有效地减少成像装置的黑暗显现电位（VDDP）和背景电位（VBG）特性的变化。

    Process for the preparation of high purity phthalocyanine pigments
    7.
    发明授权
    Process for the preparation of high purity phthalocyanine pigments 失效
    制备高纯度酞菁颜料的方法

    公开(公告)号：US4508650A

    公开(公告)日：1985-04-02

    申请号：US517868

    申请日：1983-07-27

    申请人： Emery G. Tokoli ,  Anthony M. Horgan ,  Kathleen M. Carmichael

    发明人： Emery G. Tokoli ,  Anthony M. Horgan ,  Kathleen M. Carmichael

    IPC分类号： C09B67/14 ,  C09B67/54 ,  C07D487/22 ,  C09B47/04

    CPC分类号： C09B67/0017 ,  C09B67/0096

    摘要： A process for the preparation of pigments of high purity which comprises reacting in the presence of an organic solvent an appropriate impure pigment with an organic acid of the formula R-X, or comprises reacting an appropriate impure pigment with an organic acid of the formula R-X, and subsequently adding an organic solvent to the resulting organic mixture, adding a precipitating agent to the resulting solution mixture, followed by separation of the desired pure pigment from the reaction mixture, wherein R is an alkyl group, containing from about 4 carbon atoms to about 22 carbon atoms, or an aryl group containing from about 6 carbon atoms to about 24 carbon atoms, and X is a group capable of yielding anions.

    摘要翻译： 一种用于制备高纯度颜料的方法，其包括在有机溶剂存在下使合适的不纯颜料与式RX的有机酸反应，或包括使合适的不纯颜料与式RX的有机酸反应，和 随后向所得有机混合物中加入有机溶剂，向所得溶液混合物中加入沉淀剂，然后从反应混合物中分离出所需的纯颜料，其中R为含有约4个碳原子至约22个碳原子的烷基 碳原子或含有约6个碳原子至约24个碳原子的芳基，X是能够产生阴离子的基团。