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    Polymeric binders having saturated ring of single layer positively charged organic photoconductor
    81.
    发明公开
    Polymeric binders having saturated ring of single layer positively charged organic photoconductor 失效
    聚合物粘合剂用饱和环单元为带正电荷的，有机Einschichtphotorezeptoren。

    公开(公告)号：EP0674234A2

    公开(公告)日：1995-09-27

    申请号：EP95301274.7

    申请日：1995-02-28

    申请人： Hewlett-Packard Company

    发明人： Nguyen, Khe C. ,  Ganapathiappan, Sivapackia ,  Ha, Tan

    IPC分类号： G03G5/05

    CPC分类号： G03G5/0567 ,  G03G5/0532 ,  G03G5/0542 ,  G03G5/055 ,  G03G5/0557 ,  G03G5/0589

    摘要： Composites comprising polymeric binders and phthalocyanine pigments to form a single layer positive organic photoconductor are provided for use in electrophotography. The polymeric binders comprise an aliphatic polymer or copolymer having a saturated ring for each repeat unit either included in the polymer chain or pendant therefrom and about 4 to 35% of functional groups such as -OH, -SH, >N-, >NH, and -NH 2 per repeat unit. The saturated ring portion, being essentially non-polar, or at least less polar than an unsaturated ring, maintains the specific morphology of the phthalocyanine pigments commonly employed in positive charge organic photoconductors (OPCs) and results in a stable dispersion required for the stable performance of the OPC. Keeping the functional groups listed above to less than about 35% ensures that the photoresponse is not reduced to an unacceptable level. Heating of the composite is used to control the concentration of the functional groups. One or more separate thermal carrier generation control agents comprising compounds containing the functional group(s) may be used to provide part or all of the functional groups in the composite.

    摘要翻译： 提供了用于电子摄影的复合材料，其包括聚合物粘合剂和酞菁颜料以形成单一的层阳性有机光电导体。 聚合物粘合剂包括脂肪族聚合物或者具有用于每个重复单元无论是包括在从聚合物链或侧挂有和饱和环共聚物的约4％至35％的官能团：例如OH，SH，> N - ，> NH， 和NH 2每重复单元。 饱和环部分，基本上是非极性的，或至少比不饱和的环上的极性较小的，维持在正电荷有机光电导体（OPCs的）和结果通常使用在用于稳定的性能所需要的稳定的分散体中的酞菁颜料的具体形态 的OPC。 保持上面列出的官能团至小于约35％，确保没有光响应在不可接受的程度也不会降低到。 该复合材料的加热是用来控制所述官能团的浓度。 一个或多个单独的热载流子产生控制剂包括包含所述官能团（一个或多个）的化合物可用于提供部分或全部复合物中的官能团。

    Reusable electrophotographic element and process for preparing that element
    84.
    发明公开
    Reusable electrophotographic element and process for preparing that element 失效
    用于制造此元件可重复使用的电子照相元件和方法。

    公开(公告)号：EP0056879A1

    公开(公告)日：1982-08-04

    申请号：EP81201186.4

    申请日：1981-10-27

    申请人： Océ-Nederland B.V.

    发明人： De Putter, Jan Alexander ,  Tummers, Paul Joseph Hubert

    IPC分类号： G03G5/087 ,  G03G5/05

    CPC分类号： G03G5/0546 ,  G03G5/0567 ,  G03G5/0596 ,  G03G5/087

    摘要： A reusable electrophotographic element comprising a photoconductive layer containing sensitized zinc oxide particles and first and second binding agents that are incompatible.
    The first binding agent has a higher affinity to zinc oxide than the second binding agent, is largely deposited on the zinc oxide, is a macromolecular compound having an average molecular weight of at least 12,000 and is present in the photoconductive layer in an amount of 1.5 to 9% by weight calculated on the zinc oxide. The quantity of the second binding agent in the photoconductive layer is larger than that of the first binding agent, said layer being built up from agglomerates of zinc oxide particles being substantially enveloped with the first binding agent, which agglomerates have a diameter between 2.5 and 6 µm and are sticked together by means of the second binding agent to form a porous layer having a negative charge density of at most 1m Coulomb per m 2 . The electrophotographic element has a very high resistance to both electrical and mechanical influences.