Organophotoreceptor with charge transport material having three arylamino groups

摘要

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, H, an alkyl group, an alkaryl group, or an aryl group; X₁ and X₂ are, independently, a linking group having the formula -(CH₂)_m-, branched or linear, where m 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 NR₅ group, a CHR₆ group, or a CR₇R₈ group where R₄, R₅, R₆, and R₇ are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; and Y₁, Y₂, and Y₃ are, independently, an arylamine group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.