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    • 61. 发明授权
    • Layered photoreceptor structures with overcoatings containing a
triphenyl methane
    • 具有含有三苯甲烷的外涂层的感光体结构
    • US5391447A
    • 1995-02-21
    • US261651
    • 1994-06-17
    • Damodar M. PaiPaul J. DeFeoKathleen M. Carmichael
    • Damodar M. PaiPaul J. DeFeoKathleen M. Carmichael
    • G03G5/047G03G5/043G03G5/05G03G5/06G03G5/147G03G5/14
    • G03G5/14708G03G5/043G03G5/0614
    • An electrophotographic imaging member including a substrate, a charge generating layer, a charge transport layer including charge transporting molecules dispersed in a first polymer binder, and an overcoat layer including a triphenyl methane molecule dispersed in a second polymer binder, the second polymer binder being soluble in a solvent in which the first polymer binder is insoluble and the charge transport layer being substantialy free of any triphenyl methane molecules. The overcoat layer may also contain a charge transport molecule. The device may also include any suitable optional charge blocking, adhesive and other sub layers. This electrophotographic imaging member is fabricated by forming on a charge generating layer a first coating comprising charge transporting molecules dispersed in a solution of a first polymer binder dissolved in a first solvent, drying the coating to remove the solvent to form a substantially dry charge transport layer, forming on the charge transport layer a second coating comprising triphenyl methane molecules and charge transporting molecules dispersed in a solution of a second polymer binder dissolved in a second solvent, the first polymer binder being insoluble in the second solvent and the charge transport layer being substantialy free of any triphenyl methane molecules, and drying the second coating to remove the second solvent to form a substantially dry overcoat layer. This electrophotographic imaging member may be utilized in an electrophotographic imaging process.
    • 一种电子照相成像构件,包括基底,电荷产生层,包含分散在第一聚合物粘合剂中的电荷传输分子的电荷输送层,以及包含分散在第二聚合物粘合剂中的三苯基甲烷分子的外涂层,第二聚合物粘合剂是可溶的 在其中第一聚合物粘合剂不溶解并且电荷输送层基本上不含任何三苯基甲烷分子的溶剂中。 外涂层还可以含有电荷传输分子。 该装置还可以包括任何合适的任选的电荷阻挡,粘合剂和其它子层。 通过在电荷产生层上形成包含分散在溶解在第一溶剂中的第一聚合物粘合剂的溶液中的电荷传输分子的第一涂层,干燥该涂层以除去溶剂以形成基本干燥的电荷传输层 在电荷输送层上形成包含三苯基甲烷分子和分散在溶解在第二溶剂中的第二聚合物粘合剂的溶液中的电荷输送分子的第二涂层,所述第一聚合物粘合剂不溶于第二溶剂,电荷输送层基本上是 没有任何三苯甲烷分子,并干燥第二涂层以除去第二溶剂以形成基本上干燥的外涂层。 该电子照相成像构件可用于电子照相成像过程。
    • 63. 发明授权
    • Layered photoreceptors with multiple transport layers
    • 具有多个传输层的分层光感受器
    • US06027848A
    • 2000-02-22
    • US786469
    • 1997-01-21
    • Damodar M. PaiWilliam W. Limburg
    • Damodar M. PaiWilliam W. Limburg
    • C08G64/16G03G5/047G03G5/07G03G13/22
    • G03G5/047C08G64/1641G03G5/076
    • An electrophotographic imaging member including a supporting substrate; an optional charge blocking layer; an optional adhesive layer; a charge generating layer and at least two charge transport layers, each charge transport layer including a charge transporting polymer (a) including a backbone containing charge transporting moieties in the backbone, the moieties having a chemical structure different from the chemical structure of charge transporting moieties in the charge transport polymer of any charge transport layer lying closer to the charge generating layer, and (b) having a higher ionization potential than the charge transport polymer in any charge transport layer lying closer to the charge generating layer. This imaging member may be employed in an electrophotographic imaging process, particularly in high sensitivity infrared photoreceptors which are compatible with liquid ink development processes.
    • 一种电子照相成像构件,包括支撑衬底; 可选的电荷阻挡层; 可选粘合层; 电荷产生层和至少两个电荷传输层,每个电荷传输层包括电荷传输聚合物(a),其包含在主链中含有电荷传输部分的主链,所述部分具有不同于电荷传输部分的化学结构的化学结构 在更靠近电荷产生层的任何电荷传输层的电荷输送聚合物中,和(b)在靠近电荷产生层的任何电荷传输层中具有比电荷输送聚合物更高的电离电位。 该成像构件可以用于电子照相成像过程中,特别是在与液体油墨显影方法相容的高灵敏度红外感光体中。
    • 67. 发明授权
    • Phenyl benzotriazole stabilized photosensitive device
    • 苯基苯并三唑稳定的光敏装置
    • US4232103A
    • 1980-11-04
    • US69649
    • 1979-08-27
    • William W. LimburgDamodar M. Pai
    • William W. LimburgDamodar M. Pai
    • H04N1/29C07D249/20G03G5/05G03G5/06G03G5/08G03G5/04G03G5/14
    • G03G5/0614C07D249/20
    • An imaging member comprising a hole generation layer and a contiguous hole transport layer, said generation layer comprising a photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes, said hole transport layer comprising a transparent electrically inactive polycarbonate resinous material having dispersed therein from about 25 to about 75% by weight of the composition of one or more of the following diamines: ##STR1## and wherein X is independently selected from the group consisting of an alkyl group having from 1 to about 4 carbon atoms and chlorine in the ortho, meta or para position, said transport layer also containing a chlorine-containing organic solvent, and a stabilizing proportion of a substituted or unsubstituted 2-(2'-hydroxyphenyl)-benzotriazole.
    • 一种成像构件,包括空穴产生层和邻接的空穴传输层,所述发生层包括具有孔的光生能力和所述孔注入的光电导材料,所述空穴传输层包含分散在其中的透明的电活性聚碳酸酯树脂材料 组合物的约25至约75重量%的一种或多种以下二胺:其中X独立地选自具有1至约4个碳原子的烷基和 邻位,间位或对位的氯,所述输送层还含有含氯有机溶剂,以及稳定比例的取代或未取代的2-(2'-羟基苯基) - 苯并三唑。
    • 69. 发明授权
    • Benzotriazole stabilized photosensitive device
    • 苯并三唑稳定的光敏装置
    • US4330608A
    • 1982-05-18
    • US215476
    • 1980-12-11
    • William W. LimburgDamodar M. Pai
    • William W. LimburgDamodar M. Pai
    • G03G5/06G03G5/14
    • G03G5/0633G03G5/0614
    • An imaging member comprising a hole generation layer and a contiguous hole transport layer, said generation layer comprising a photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes, said hole transport layer comprising a di or triarylmethane compound of the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are independently selected from the group consisting of a C.sub.1 -C.sub.8 alkyl, aryl, alkaryl and aralkyl, where said aryl is a phenyl group or a condensed ring group, where the alkyl group of said alkaryl and aralkyl is a C.sub.1 -C.sub.4 group; R.sub.3 is independently selected from the group consisting of hydrogen and CH.sub.3 ; and R.sub.4 is the same as R.sub.1 and R.sub.2 or a disubstituted aminophenyl group wherein the substituents are independently selected from the group consisting of a C.sub.1 -C.sub.8 alkyl, aryl, alkaryl and aralkyl as defined supra, said di or triarylmethane is dissolved in a polycarbonate resinous material, said charge transport layer being substantially nonabsorbing in the spectral region at which the photoconductive material generates and injects said holes, but being capable of supporting the injection of said holes and transporting said holes through said transport layer and dissolved in said transport layer a stabilizing proportion of a substituted or unsubstituted 2-(2'-hydroxyphenyl)-benzotriazole.
    • 一种成像构件,包括空穴产生层和邻接的空穴传输层,所述发生层包括具有空穴光生能力和所述孔注入的光电导材料,所述空穴传输层包含通式为的二或三芳基甲烷化合物: 其中R 1和R 2独立地选自C 1 -C 8烷基,芳基,烷芳基和芳烷基,其中所述芳基是苯基或稠环基,其中所述烷芳基和芳烷基的烷基是 一个C 1 -C 4基团; R 3独立地选自氢和CH 3; 并且R 4与R 1和R 2相同或二取代的氨基苯基,其中取代基独立地选自如上所定义的C 1 -C 8烷基,芳基,烷芳基和芳烷基,所述二芳基甲烷或三芳基甲烷溶于聚碳酸酯树脂 材料,所述电荷传输层在光电导材料产生并注入所述孔的光谱区域中基本上不吸收,但是能够支持所述孔的注入并将所述孔传送通过所述传输层并溶解在所述传输层中,稳定化 取代或未取代的2-(2'-羟基苯基) - 苯并三唑的比例。