A layered photoresponsive imaging member comprised of a photogenerating layer, and in contact therewith a hole transporting layer comprised of charge transport polyurethanes of the following formula, optionally doped with a charge transport compound, or optionally dispersed in an inert resinous binder: ##STR1## wherein A, B and Z are independently selected from the group of bifunctional linkages; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y represent the mole fractional numbers of the polyurethane structural composition units, subject to the provision that x is greater than 0 and that the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
一种分层的光敏成像成员,包括一个光发生层,并与之接触的是一个孔传输层,其由以下式子的电荷传输聚
氨酯组成,可以掺杂电荷传输化合物,或者可以分散在惰性
树脂粘合剂中:##STR1## 其中,A、B和Z是从双官能团链的群组中独立选择的;R是烷基或芳基基团;Ar是芳基或取代芳基基团;x和y表示聚
氨酯结构组分的摩尔分数,但要满足x大于0且x和y的和等于1.0;n表示重复片段的数量。