| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor which is superior in the electrical characteristics and image characteristics, even if the content of a charge-transporting substance therein is low and which changes little in properties with fluctuations in the ambient conditions and is reduced in deterioration, i.e., has high durability, and to provide an apparatus for image formation which has the photoreceptor. SOLUTION: The electrophotographic photoreceptor has a charge-transport layer and a charge-generating layer on a conductive support, wherein the charge-transport layer comprises a charge-transport substance represented by Formula (1) and a binder resin and the proportion of the charge-transport substance to the binder resin (charge-transport substance/binder resin) is 5/100 to 45/100 by mass, wherein Ar<SP>1</SP>represents optionally substituted arylene; Ar<SP>2</SP>-Ar<SP>5</SP>each represents optionally substituted aryl; and n represents an integer of 3-6. COPYRIGHT: (C)2007,JPO&INPIT
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