Electrophotographic photoconductor, process cartridge, and image forming apparatus

An electrophotographic photoconductor comprising:

• a conductive substrate;
• and
• a photoconductive layer, wherein
• an outermost surface layer of the electrophotographic photoconductor contains a binder resin, a charge transporting material, fluorine-containing resin particles, and an acidic compound,
• the number of carboxyl groups in the fluorine-containing resin particles is 0 or more and 30 or less per 106 carbon atoms of the fluorine-containing resin particles,
• in a case where charging and exposure of the electrophotographic photoconductor are repeated 10,000 times under conditions of a charging potential of −700V and an exposure intensity of 5 mJ/m2, an absolute value |RP1−RP10000| of a difference between a residual potential RP1 after charging and exposure once and a residual potential RP10000 after charging and exposure 10,000 times is 25 V or less, and
• the acidic compound is one or more selected from the group consisting of a phosphoric acid compound, a nitric acid compound, hydrogen chloride, a sulfonic acid compound in which an alkyl group having 1 or more and 20 or less carbon atoms is substituted or a hydrate thereof, a sulfonic acid compound which has a benzene ring, an alkylsulfonic acid having 1 or more or 6 or less carbon atoms or a hydrate thereof, and a carboxylic acid compound.