High speed electrophotographic imaging system

An electrophotographic imaging process comprising providing an electrophotographic imaging member comprising a charge generating layer and a charge transport layer, said charge transport layer comprising polystyrene film forming binder and a charge transport molecule selected from the group consisting of an aromatic diamine represented by the general formula:

• ##STR17## wherein R.sub.1 represents hydrogen, an alkyl group or an alkoxy group, R.sub.2 represents a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, an alkoxycarbonyl group or a substituted amino group and R.sub.3 represents an alkyl group, an alkoxy group, an alkoxy group, a halogen atom, an alkoxycarbonyl group or a substituted amino group, and a hydrazone represented by the general formula:
• ##STR18## wherein n=1, ##STR19## x=0,1,2, or 3, R.sub.2 =--OCH.sub.2 CH.sub.3, --CH.sub.3 or --H, ##STR20## --CH.sub.3 or --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.3, and ##STR21## --CH.sub.3, depositing a uniform electrostatic charge on said imaging member with a corona charging device, exposing said imaging member to activating radiation in image configuration to form an electrostatic latent image on said imaging member, developing said electrostatic latent image with electrostatically attractable marking particles to form a toner image, transferring said toner image to a receiving member and repeating said depositing, exposing, developing and transfering steps, the time elapsed between said exposing and the developing steps is between about 0.5 millisecond and about 500 milliseconds.