Conductive roll and manufacturing method thereof

A conductive roll for an electrophotographic unit, which eliminates deposition unevenness onto the roll surface, inhibits occurrence of non-uniform roll resistance value, and gives a satisfactory image free from density unevenness. The surface of the conductive roll is corona-treated by arranging the conductive roll oppositely to, and in parallel with a discharging electrode, and impressing a voltage onto the electrode while rotating the conductive roll. With the conductive roll subjected to a corona treatment of the roll surface, deposition unevenness onto the roll surface is eliminated, a uniform roll resistance value is maintained throughout the entire surface even after use for a long period of time, thus permitting maintenance of stable properties.