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 Z1 and Z2 comprise, each independently, a bond, a vinyl group, a —CR1?N—NR2— group, or a —CR3?N—N?CR4— group; Y1 and Y2 comprise, each independently, an aromatic group; X1 and X2 are, each independently, a linking group; W1 and W2 are, each independently, a —(CH2)n— group or a —(CH2)n-1—C(?O)— group, where n is an integer between 1 and 10, inclusive; Q1 and Q2 are, each independently, O, S, or NR; and R1, R2, R3, R4, R, R?, and R? comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an acyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: Improved organophotoreceptors comprise: (a) a charge transport compound having the formula where n is an integer from 0 to 1; X is an (N,N-disubstituted)arylamine group; Ar is an aryl group or a heterocyclic group; A is a first linking group with the formula —(CH2)p— which can be branched or linear, where p is an integer from 3 to 20 inclusive; and B is a second linking group having the formula -Q-Z-Q?-, where Q and Q? are, independently, O, S, or NR1; wherein when Q or Q? is NR1 or Q=O and Q?=S, Z comprises an aryl group, and wherein when Q=Q?=S or Q=Q?=O, Z comprises a multi-ring conjugated group or Y—W—Y?, where the groups R1, Y, W, and Y? are defined in the specification; (b) a charge generating compound; and (c) an electrically conductive substrate over which said charge transport compound and said charge generating compound are located.

Abstract: An 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 X and X? are, each independently, a linking group; Ar comprises an aromatic group; R1, R2, and R3 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and E1 and E2 are, each independently, a reactive ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and a polymeric charge transport material prepared from the charge transport material above 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 and R2 are, each independently, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; R3 and R4 are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; X1 and X2 are, each independently, a linking group; Y1 and Y2, each independently, comprise an arylamino group; and Z is a bridging 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 and R2 are, each independently, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; R3 and R4 are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; X1 and X2 are, each independently, a linking group; Y1 and Y2, each independently, comprise an arylamine group; and Z is a bridging 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: An 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 X comprises a linking group; R1 and R1? comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and R2, R3, R2?, and R3? comprise, each independently, an arylamine group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of forming the charge transport material 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 n is an integer between 2 and 6, inclusive; R1 and R2 are, independently, H, halogen, carboxyl, hydroxyl, thiol, cyano, nitro, aldehyde group, ketone group, an ether group, an ester group, a carbonyl group, an alkyl group, an alkaryl group, or an aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 0 and 20, inclusive, and one or more of the methylene groups can be optionally replaced by O, S, C?O, O?S?O, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R5, and R6 are, independently, H, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; Y comprises a bond, C, N, O, S, a branched or linear —(CH2)p— group where p is an integer between 0 and 1

Abstract: An 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 comprising a polymer having the formula where X1 and X2 are, each independently, a bond or a linking group; Y comprises a bond or an arylamine group; Z comprises a bond, O, S, or NR4; R1 and R4 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; R2 and R3 comprise, each independently, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and n is a distribution of integers between 1 and 100,000 with an average value of greater than one; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of forming the charge transport material 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, R4, R5, R6, R7, and R8, are, each independently, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group; R9 and R10 are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group; Ar1 and Ar2 are, each independently, an aromatic group; Y is an arylamine group; and X1 and X2 are, each independently, a linking group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: An 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 X1 and X2 are, each independently, a linking group; Ar comprises an aromatic group; R1, R2, and R3 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and n is a distribution of integers between 1 and 100,000 with an average value of greater than one; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of forming the charge transport material are described.

Abstract: This invention includes an organophotoreceptor having an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a polymeric charge transport composition with the formula where Y1 and Y2 are, each independently, a bond, a —CR1?N—NR2— group, or a —CR3?N—N?CR4— group; R, R?, R?, R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, an aromatic group, or a part of a ring group; X1 and X2 are, each independently, a linking group; T2 comprises a thiiranyl group, H, an alkyl group, an alkenyl group, or an aromatic group; Ar comprises an aromatic group; Z is a bridging group; and n is a distribution of integers between 1 and 100,000 with an average value at least 2; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging processes are also described.

Abstract: An organophotoreceptor comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a charge transport composition with the formula where Y1 and Y2 are, each independently, an arylamine group; X1 and X2 are, each independently, a linking group; R1 and R2 are, each independently, a hydrogen, an alkyl group, an alkenyl group, a heterocyclic group, an aromatic group; Z is a bridging group; and n is a distribution of integers between 1 and 100,000 with an average value greater than 1; 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 Y1 and Y2 comprise, each independently, a carbazolyl group; X1 and X2, each independently, are a bridging group; E1 and E2 comprise, each independently, an epoxy group; and Z is a linking group; and (b) a charge generating compound. Organophotoreceptors with the charge transport material crosslinked to a polymeric binder are also described. 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 n is an integer between 3 and 6; R1 and R2 are, each independently, H, an alkyl group, an alkenyl group, an aromatic group, or a heterocyclic group; R3, R4, and R5 are, each independently, H, thiol, hydroxyl, carboxyl, an amino group, a halogen, nitro, cyano, an alkyl group, an alkenyl group, an aromatic group, a heterocyclic group, or a part of a ring group; X1 and X2 are, each independently, a linking group; Y comprises an arylamine group; and Z is a bridging group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

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 Y1 and Y2 are, each independently, an arylamine group; R1 and R2 comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; X1 and X2, each independently, are bridging groups; E1 and E2 are, each independently, an epoxy group; and Z is a linking group comprising an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. The charge transport materials can be crosslinked to a polymeric bind, either directly or through a crosslinking agent. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged (N,N-disubstituted)arylamine groups connected by a central bridging group. Examples of charge transport compounds of this invention are those having the following generic formula: (R-Q)n-Y where R is an (N,N-disubstituted)arylamine group; Q comprises an aliphatic or aromatic hydrazone linking group; n is 2; and Y comprises a bridging group comprising an aryl group having the formula —Ar1-G-Ar2— where Ar1 and Ar2 are, each independently, an arylene group and G comprises a bond, O, S, —SO2—, an imine group, an alkylene group, or an aromatic group.

Abstract: This invention relates to a novel organophotoreceptor that includes: (a) a charge transport material comprising a fluorenone hydrazone having a) at least two fluorenone alkylsulfonylphenylhydrazone groups, b) at least two fluorenone pyrrolylhydrazone groups, c) at least two fluorenone benzotriazolylhydrazone groups, d) at least two fluorenone sulfolanylhydrazone groups, e) at least two fluorenone pyrazolylhydrazone groups, f) at least two fluorenone naphthylhydrazone groups, g) at least two fluorenone tetrazolylhydrazone groups, h) at least two fluorenone stilbenylhydrazone groups, or i) at least two fluorenone (9H-fluoren-9-ylidene)benzylhydrazone groups. Some of these fluoreneones may be represented by the formula where n is an integer between 2 and 6, inclusive; R1 is hydrogen, an alkyl group, or an aryl group; R2 is an alkylsulfonylphenyl or one of its derivatives; X is a linking group.

Abstract: This invention relates to a novel organophotoreceptor that includes: (a) a charge transport material comprising a fluorenone hydrazone having a) least two fluorenone alkylsulfonylphenylhydrazone groups, b) at least two fluorenone pyrrolylhydrazone groups, c) at least two fluorenone benzotriazolylhydrazone groups, d) at least two fluorenone sulfolanylhydrazone groups, e) at least two fluorenone pyrazolylhydrazone groups, f) at least two fluorenone naphthylhydrazone groups, g) at least two fluorenone tetrazolylhydrazone groups, h) at least two fluorenone stilbenylhydrazone groups, or i) at least two fluorenone(9H-fluoren-9-ylidene)benzylhydrazone groups. Some of these fluoreneones may be represented by the formula where n is an integer between 2 and 6, inclusive; R1 is hydrogen, alkyl, or aryl; R2 is alkylsulfonylphenyl or one of its derivatives; X is a linking group having the formula —(CH2)m—, branched or linear.