Patent ID: 6099996
Filing Date: 2000-08-08
Classification: G03G

Abstract:
A flexible electrophotographic imaging member comprisinga substratea charge generating layer anda charge transport layer, the transport layer comprisinga first charge transport materialrepresented by the following formula: ##STR41## wherein n is 0 or 1,when n=0, A is ##STR42## when n=1, A is selected from the group consisting of ##STR43## Ar.sub.1 and Ar.sub.2 are independently selected from the group consisting of ##STR44## Ar.sub.3 and Ar.sub.4 are independently selected from the group consisting of ##STR45## Z is selected from the group consisting of ##STR46## R.sub.1-7 are independently selected from the group consisting of--H, --CH.sub.3, --C.sub.2 H.sub.5, --C(CH.sub.3).sub.3, --Cl and --OCH.sub.3,anda different second charge transporting material represented by the formula ##STR47## wherein: Q is represented by the formula: ##STR48## wherein: R.sub.1 and R.sub.4 are independently selected from the group consisting of: ##STR49## and R.sub.2 and R.sub.3 are independently selected from the group consisting of: ##STR50## wherein v is 1 to 10,n is 0 to 10,Ar"" is ##STR51## Ar is ##STR52## Ar' is selected from the group consisting of ##STR53## wherein R.sub.5, R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are independently selected from the group consisting of ##STR54## dissolved or molecularly dispersed in a film forming binder, the charge transport layer having been formed by drying a coating comprising a solution of the first charge transporting material and second charge transporting material and the film forming polymer binder in a mixture of a low volatility solvent and a high volatility solvent at a temperature sufficient to retain residual low volatility solvent in the transport layer after said drying, the charge transport layer comprising between about 37 percent and about 57 percent by weight of the first charge transporting material, between about 3 percent and about 10 percent of weight of the second charge transporting material, and between about 60 percent and about 40 percent by weight of the film forming binder.