Photosensitive composition for use in photoelectrophoretic imaging systems. The particulate component of this composition includes vanadyl phthalocyanine pigment particles which have been treated with a phenazine-type dye and a mixture of polymeric materials consisting essentially of at least one polymer having structural units of the formula ##STR1## WHEREIN Z is a pendant group of the formula ##STR2## X is a substituent substantially incapable of withdrawing electrons from the electron rich pyridinyl moiety; m is a whole number from 0 to 3; and n is a whole number in excess of 25; And, at least one polymer having structural units of the formula ##STR3## wherein X is vinyl, alpha alkyl substituted vinyl, or alkyl of 1 to 4 carbon atoms, and Y is vinyl, alpha alkyl substituted vinyl or alkyl of 1 to 4 carbon atoms with the proviso that when only one of either X or Y is vinyl or alpha alkyl substituted vinyl per structural unit.
用于光电泳成像系统的光敏组合物。该组合物的颗粒成分包括经过苯嗪型
染料和一种由至少一个具有结构单元的聚合物混合物处理的邻
菲酰基
酞菁颜料颗粒,其中该结构单元的公式为:##STR1## 其中Z是公式##STR2## 的悬垂基团;X是从电子富集的
吡啶基团中几乎无法提取电子的取代基;m是0到3的整数;n是超过25的整数;并且至少有一个具有结构单元的聚合物的公式为:##STR3## 其中X是
乙烯基、α-烷基取代
乙烯基或1到4个碳原子的烷基,Y是
乙烯基、α-烷基取代
乙烯基或1到4个碳原子的烷基,但是当每个结构单元中只有X或Y之一为
乙烯基或α-烷基取代
乙烯基时有所限制。