Organophotoreceptor with a charge transport material having two hydrazone groups

An electrophotographic imaging apparatus comprising:

• (a) a light imaging component;
• and
• (b) an organophotoreceptor oriented to receive light from the light imaging component, the organophotoreceptor comprising an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
• (i) a charge transport material having the formula
• 9
• where R1, R2, R3, R4, R5, R6, R7, and R8 are, each independently, an alkyl group, an alkaryl group, an aryl group, or heterocyclic group, X and X′ are, each independently, aromatic groups, and Z is a divalent linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 30, inclusive, and one or more of the methylene groups may be replaced by O, S, C═O, O═S═O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR9 group, a CHR10 group, or a CR11R12 group where R9 and R10 are, each independently, H, hydroxyl, thiol, an alkoxy group, an alkyl group, or an aryl group, and R11, and R12 are, each independently, H, hydroxyl, thiol, an alkoxy group, an alkyl group, an aryl group, or a part of a cyclic ring;
• and
• (ii) a charge generating compound.

An electrophotographic imaging process comprising;

• (a) applying an electrical charge to a surface of an organophotoreceptor comprising an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising
• (i) a charge transport material having the formula
• 11
• where R1, R2, R3, R4, R5, R6, R7, and R8 are, each independently, an alkyl group, an alkaryl group, an aryl group, or heterocyclic group, X and X′ are, each independently, aromatic groups, and Z is a divalent linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 30, inclusive, and one or more of the methylene groups may be replaced by O, S, C═O, O═S═O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR9 group, a CHR10 group, or a CR11R12 group where R9 and R10 are, each independently, H, hydroxyl, thiol, an alkoxy group, an alkyl group, or an aryl group, and R11, and R12 are, each independently, H, hydroxyl, thiol, an alkoxy group, an alkyl group, an aryl group, or a part of a cyclic ring;
• and
• (ii) a charge generating compound.
• (b) imagewise exposing the surface of the organophotoreceptor to radiation to dissipate charge in selected areas and thereby form a pattern of charged and uncharged areas on the surface;
• (c) contacting the surface with a toner to create a toned image;
• and
• (d) transferring the toned image to substrate.