Patent ID: 7655118

Claim:
An electrolytic processing apparatus, comprising: a processing electrode to be located close to a workpiece; a feeding electrode for feeding electricity to the workpiece; an ion exchanger located between the workpiece and at least one of said processing electrode and said feeding electrode; a fluid supply section for supplying a fluid to a location between the workpiece and at least one of said processing electrode and said feeding electrode, said ion exchanger being disposed at said location between the workpiece and said at least one of said processing electrode and said feeding electrode; and a plurality of power sources, each of said power sources being operable to apply a voltage between said processing electrode and said feeding electrode; wherein said at least one of said processing electrode and said feeding electrode is electrically divided into a plurality of divided electrode parts separated by a plurality of ring-shaped insulators, said fluid supply section comprising a plurality of through-holes in said divided electrode parts, each of said power sources being arranged to apply voltage to a respective one of said divided electrode parts and to independently control at least one of voltage and electric current for the respective one of said divided electrode parts.