ORGANOPHOTORECEPTOR, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, ELECTROPHOTOGRAPHIC IMAGE FORMING METHOD AND CHARGE TRANSPORT MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an organophotoreceptor containing a charge carrier transport material which satisfies requirements in the field of electrophotography. SOLUTION: The charge transport material comprises a fluorenone hydrazone having a combination of radicals selected from the group comprising a) at least two fluorenone alkylsulfonylphenylhydrazone radicals, b) at least two fluorenone pyrrolylhydrazone radicals, c) at least two fluorenone benzotriazolylhydrazone radicals, d) at least two fluorenone sulfolanylhydrazone radicals, e) at least two fluorenone pyrazolylhydrazone radicals, f) at least two fluorenone naphthylhydrazone radicals, g) at least two fluorenone tetrazolylhydrazone radicals, h) at least two fluorenone stilbenylhydrazone radicals or i) at least two fluorenone (9H-fluoren-9-ylidene)benzylhydrazone radicals. COPYRIGHT: (C)2003,JPO