| 主权项 |
1. An electrophotographic photoreceptor comprising:
a charge-generating layer; a charge-transporting layer; and a surface protective layer sequentially deposited on an electroconductive support, wherein the charge-transporting layer contains a charge-transporting material having an ionization potential (IPA), the surface protective layer contains a binder resin, and a metal oxide microparticle having an ionization potential (IPB), the ionization potential (IPA) and the ionization potential (IPB) satisfy a relationship represented by Expression (A):
−0.4 eV≦(IPA−IPB)≦0.4 eV, and the metal oxide microparticle has a surface modified with a hole-transporting compound having a structure represented by Formula (1):
AR1-Q1)k Formula(1)wherein A represents a hole transportable group; Q1 represents an acidic group; R1 represents a substituted or unsubstituted alkylene, alkenylene, alkynylene, or arylene group; and k represents a positive integer of 1 or more, provided that when k represents an integer of 2 or more, R1s may be the same or different, and Q1s may be the same or different. |
