Patent ID: 7063928

Claim:
An electrophotographic imaging apparatus comprising: (a) a plurality of support rollers; and (b) an organophotoreceptor in the form of a flexible belt threaded around said support rollers, said organophotoreceptor comprising: (i) a charge transport material comprising a fluorenone hydrazones 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, and i) at least two fluorenone (9H-fluoren-9-ylidene)benzylhydrazone groups; (ii) a charge generating compound; and (iii) an electrically conductive substrate.