Electrophotographic photoreceptor
AssigneeKonica Minolta, Inc.
InventorsMari Konishi, Toshiyuki Fujita, Daisuke Kodama, Takeshi Nakamura, Toyoko Shibata
Life of this patent
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Abstract
The electrophotographic photoreceptor of the present invention at least includes 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); and the ionization potential (IPA) and the ionization potential (IPB) satisfy the relationship represented by Expression (A): −0.4 eV≦(IPA−IPB)≦0.4 eV.
Claims8
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.
Dependencies are inferred from the claim text.