Abstract: An electrophotographic recording material comprising a conductive support and a photosensitive layer containing at least one photoconductive compound that has p-type charge generating capacity and is a tetrabenzoporphyrin type compound represented by the following general formula (I): ##STR1## wherein: each of X.sup.1, X.sup.2, X.sup.3, and X.sup.4 (same or different) represents a substituent selected from the group consisting of halogen, e.g. chlorine or bromine, nitro, cyano, (C.sub.1 -C.sub.2) alkyl and alkoxy, e.g. methoxy or ethoxy or 2 X.sup.1 's, 2 X.sup.2 's, 2 X.sup.3 's or 2 X.sup.4 's together represent the atoms necessary to form a substituted or unsubstituted carbocyclic or heterocyclic ring system;k, l, m, and n each and independently represent zero or an integer 1 to 4, R.sup.1 represents hydrogen, a (C.sub.1 -C.sub.2) alkyl, aralkyl or aryl group; each of the A's (same or different) represents nitrogen, or a CR.sup.2 group, wherein each of the R.sup.

Abstract: Bis-sulfonium, -selenonium, -arsonium, -ammonium, and -phosphonium salts useful as photoinitiators, comprise:an aromatic or heterocyclic aromatic group which absorbs UV or visible radiation and which exhibits a higher energy occupied molecular orbital than at least one other substituent attached to each of the S, Se, As, N or P atoms of said salt;at least one substituent, attached to each of the S, Se, As, N or P atoms of said salt, which comprises an electron-withdrawing group which causes the lowest unoccupied molecular orbital to be localized on the substituent and the S, Se, As, N or P atom of the salt;an insulating group which links said aromatic or heterocyclic aromatic group to each of the S, Se, As, N, or P atoms of said salt, said insulating group essentially preventing .pi.