Organophotoreceptor with a charge transport material having at least three linked 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
• 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
• (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
• 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
• (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.

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.