Stilbene derivatives, distyryl derivatives and electrophotographic photoconductor comprising at least one of the derivatives

Claim 1

An electrophotographic photoconductor comprising an electroconductive support material and a photosensitive layer overlayed thereon containing at least one compound selected from the group consisting of: (i) stilbene derivatives of formula (I) ##STR215## wherein R 1 represents an alkyl group or an aralkyl group, Ar 1 represents an unsubstituted or substituted naphthyl group, an unsubstituted or substituted anthryl group, or ##STR216## (in which R 2 represents an alkyl group or an unsubstituted or substituted phenyl group), or ##STR217## (in which R 3 represents hydrogen, an alkyl grup, an alkoxy group, an alkylenedioxy group, halogen or a substituted amino group represented by ##STR218## wherein R 4 and R 5 each represent an alkyl group, an unsubstituted or substituted aralkyl group, or an unsubstituted or substituted aryl group, m is an integer of 1, 2 or 3, and when m is an integer of 2 or 3, R 3 's may be the same or different), and n is an integer of 0 or 1, and (ii) distyryl derivatives of formula (II) ##STR219## wherein Ar 2 represents an unsubstituted or substituted naphthyl group, ##STR220## (in which R 3 represents hydrogen, an alkyl group, an alkoxy group, an alkylenedioxy group, halogen or a substituted amino group represented by ##STR221## wherein R 4 and R 5 each represent an alkyl group, an unsubstituted or substituted aralkyl group, or an unsubstituted or substituted aryl group, m is an integer of 1, 2 or 3, and when m is an integer of 2 or 3, R 3 's may be the same or different), and l is an integer of 2 or 3.