An electrophotographic photoconductor includes a conductive support; a charge generation layer provided on the conductive support; and a charge transport layer containing a charge transport material, a binder resin, and a highly branched polymer having a long-chain alkyl group or an alicyclic group, provided on the charge generation layer as an outermost layer. The electrophotographic photoconductor has excellent contamination resistance against sebum or the like, stable electrical characteristics even upon repeated use, as well as superior transfer resistance and gas resistance. A method for producing the electrophotographic photoconductor is disclosed, as well as an electrophotographic apparatus including the electrophotographic photoconductor.

In a negatively-chargeable laminate-type electrophotographic photoreceptor, a charge generation layer and another charge transport layer are arranged on a conductive substrate directly or via an intermediate layer. The charge transport layer contains at least a hole-transporting substance, an electron-transporting substance and a binder resin; the mass ratio (R.sub.PN) [% by mass] between mass (P) of the hole-transporting substance and mass (N) of the electron-transporting substance is represented by the following equation (1), and satisfies the following equation (2):

R.sub.PN=(N/(P+N))100(1)

1R.sub.PN40(2); and

when a voltage of +6 kV is applied to the photoreceptor for 5 seconds via a resin sheet having a thickness of 50 m and a surface resistivity of 210.sup.7 /cm.sup.2, the surface potential difference (Vo) and half-tone potential difference (Vh) between before and after the voltage application are both 15 V or less.