Patent claim: The electrophotographic photosensitive member 1 according to claim 1 wherein the electron transporting substance is at least one selected from the group consisting of a compound represented by formula A1 below a compound represented by formula A2 below a compound represented by formula A3 below a compound represented by formula A4 below a compound represented by formula A5 below a compound represented by formula A6 below a compound represented by formula A7 below a compound represented by formula A8 below and a compound represented by formula A9belowwhere R101 to R106 R201 to R210 R301 to R308 R401 to R408 R501 to R510 R601 to R606 R701 to R708 R801 to R810 and R901 to R908 each independently represent a monovalent group represented by formula A below a hydrogen atom a cyano group a nitro group a halogen atom an alkoxycarbonyl group a substituted or unsubstituted alkyl group a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group at least one of the R101 to R106 at least one of theR201 to R210 at least one of the R301 to R308 at least one of the R401 to R408 at least one of the R501 to R510 at least one of the R601 to R606 at least one of the R701 to R708 at least one of the R801 to R810 and at least one of the R901 to R908 are each the monovalent group represented by the formula A one of carbon atoms in the alkyl group may be replaced with O NH S or NR1001 R1001 representing an alkyl group and a substituent of the substituted alkyl group is an alkyl group an aryl group a halogen atom or a carbonyl group a substituent of the substituted aryl group or the substituted heterocyclic group is a halogen atom a nitro group a cyano group an alkyl group a halogensubstituted alkyl group an alkoxy group or a carbonyl group Z201 Z301 Z401 and Z501 each independently represents a carbon atom a nitrogen atom or an oxygen atom R209 and R210 are absent when Z201 is the oxygen atom R210 is absent when Z201 is the nitrogen atom R307 and R308 are absent when Z301 is the oxygen atom R308 is absent when Z301 is the nitrogen atom R407 and R408 are absent when Z401 is the oxygen atom R408 is absent when Z401 is the nitrogen atomR509 and R510 are absent when Z501 is the oxygen atom and R510 is absent when Z501 is the nitrogen atomwhere at least one ofandis a group having a substituent the substituent being at least one group selected from the group consisting of a hydroxy group a thiol group an amino group a carboxyl group and a methoxy group 1 and m each independently represents 0 or 1 the sum of 1 and m is 0 to 2represents an alkylene group having 1 to 6 mainchain atoms an alkylene group having 1 to 6 mainchain atoms and substituted with an alkyl group having 1 to 6 carbon atoms an alkylene group having 1 to 6 mainchain atoms and substituted with a benzyl group an alkylene group having 1 to 6 mainchain atoms and substituted with an alkoxycarbonyl group or an alkylene group having 1 to 6 mainchain atoms and substituted with a phenyl group and may have at least one substituent selected from the group consisting of a hydroxy group a thiol group an amino group a carboxyl group and a methoxy groupone of carbon atoms in the main chain of the alkylene group may be replaced with O NH S or NR19 R19 representing an alkyl grouprepresents a phenylene group a phenylene group substituted with an alkyl group having 1 to 6 carbon atoms a phenylene group substituted with a nitro group a phenylene group substituted with a halogen atom or a phenylene group substituted with an alkoxy group and may have at least one substituent selected from the group consisting of a hydroxy group a thiol group an amino group a carboxyl group and a methoxy grouprepresents a hydrogen atom an alkyl group having 1 to 6 mainchain atoms or an alkyl group having 1 to 6 mainchain atoms and substituted with an alkyl group having 1 to 6 carbon atoms and may have at least one substituent selected from the group consisting of a hydroxy group a thiol group an amino group a carboxyl group and a methoxy group.

Related passage: Further in embodiments the photoconductors disclosed may it is believed possess the minimization or substantial elimination of undesirable ghosting on developed images such as xerographic images including improved ghosting at various relative humidity excellent cyclic and stable electrical properties minimal charge deficient spots CDS and compatibility with the photogenerating and charge transport resin binders such as polycarbonates.Charge blocking layer and hole blocking layer are generally used interchangeably with the phrase undercoat layer.