Abstract: Improved organophotoreceptor comprises a photoconductive element comprising: (a) a charge transport material having the formula where Y1 and Y2 are, each independently, a bond, —CR1?N—NR2—, or —CR3?N—N?CR4— where R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; X1 and X2 are, each independently, a linking group; T1 and T2 are, each independently, a thiiranyl group, H, an alkyl group, an alkenyl group, or an aromatic group with the proviso that at least one of T1 and T2 is a thiiranyl group; and Ar comprises an aromatic group with the proviso that when both Y1 and Y2 are a bond and one of T1 and T2 is not a thiiranyl group, Ar comprises a bis[(N,N-disubstituted)amino]aromatic group or a bicarbazole group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, and R4 are, independently, an alkyl group, an alkaryl group, or an acyl group; Y is an alkyl group, alkaryl group, or aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where in is an integer between 1 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R,5 and R6 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; and E is an epoxy group; and (b) a charge generating compound.

Abstract: Improved organophotoreceptor comprises a photoconductive element comprising: (a) a charge transport material having the formula where Y1 and Y2 are, each independently, a bond, —CR1?N—NR2—, or —CR3?N—N?CR4— where R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; X1 and X2 are, each independently, a linking group; T1 and T2 are, each independently, a thiiranyl group, H, an alkyl group, an alkenyl group, or an aromatic group with the proviso that at least one of T1 and T2 is a thiiranyl group; and Ar comprises an aromatic group with the proviso that when both Y1 and Y2 are a bond and one of T1 and T2 is not a thiiranyl group, Ar comprises a bis[(N,N-disubstituted)amino]aromatic group or a bicarbazole group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, and R4 are, independently, an alkyl group, an alkaryl group, or an acyl group; Y is an alkyl group, alkaryl group, or aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where in is an integer between 1 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R,5 and R6 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; and E is an epoxy group; and (b) a charge generating compound.

Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged heterocyclic groups (especially julolidine groups, carbazole groups, triarylamine groups and (N,N-disubstituted)arylamine groups such as dialkarylamine groups (e.g. dimethylphenylamine; methylethylphenylamine, dipropylphenylamine, ethylepropylphenylamine, ethylbutylnaphthylamine, etc.), alkyldiarylamine groups (e.g. methyldiphenylamino, ethyldiphenylamino, etc), and triarylamino groups (e.g., triphenyl amino, trinaphthylamino, etc)) connected by a central bridging group.

Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged heterocyclic groups (especially julolidine groups, carbazole groups, triarylamine groups and (N,N-disubstituted)arylamine groups such as dialkarylamine groups (e.g. dimethylphenylamine; methylethylphenylamine, dipropylphenylamine, ethylepropylphenylamine, ethylbutylnaphthylamine, etc.), alkyldiarylamine groups (e.g. methyldiphenylamino, ethyldiphenylamino, etc), and triarylamino groups (e.g., triphenyl amino, trinaphthylamino, etc)) connected by a central bridging group.

Abstract: The invention features organic photoreceptors that include a charge transport compound having the formula: where X is an N-alkyl-substituted carbazole, an N-aryl-substituted carbazole, or a p-(N,N-disubstituted)arylamine; Ar is a group having the formula: R1 is a hydrogen, halogen, or alkyl group; R is a hydrogen, halogen, OH, CN, OR2, or OCOR3 group; R2 is an alkyl, aryl, or alkaryl group; R3 is a hydrogen, alkyl, aryl, or haloalkyl group; n is 0 or 1; A is a group having the formula: Z is O or S; Q is O, S, or CH2; and m is 0 or 1.