Charging roller and method of producing the same

A charging roller, comprising:

• a roller main body including a cylindrical inner layer having a porous structure formed of a semiconductive rubber composition constituted by ethylene propylene rubber, paraffin oil, and a carbon black having a DBP oil absorption amount of 400 cm3/100 g or more, and an outer layer which is provided on the outer circumference of the inner layer and constituted by a nonporous and seamless semiconductive tube including a polyurethane thermoplastic elastomer having a type A durometer hardness according to Japanese Industrial Standards JIS K7311-1995 of 93 or less at a measurement temperature of 23° C., carbon black, and crosslinked poly(methyl methacrylate) particles having an average particle size of 5 μm or more and 20 μm or less.