An electrophotographic photoconductor is disclosed, which comprises an electroconductive support material and a photosensitive layer comprising at least one 1,3-dithiol derivative of the formula ##STR1## wherein R.sup.1 and R.sup.2 independently represent hydrogen, a substituted or unsubstituted phenyl group, or R.sup.1 and R.sup.2 in combination can form a ring; R.sup.3 represents hydrogen or an alkyl group; and R.sup.4 and R.sup.5 independently represent an alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group.