ROTARY ELECTROPLATING OF SPACED CONDUCTIVE AREAS

摘要

Metal is deposited by electrolysis from an electrolyte using a device comprising an electrolysis cell, at least one anode and at least one plate-shaped cathode. The cathode is rotatable and comprises a metal plate substrate coated with an electrically insulating material having at least one opening to expose the metal substrate to the electrolyte. The opening has such a crosssectional dimension that a powder-like deposit of the metal of greater area than the opening is formed and the greater area of the deposited metal acts to reduce the electric current density, whereby a subsequently deposited portion of the metal has a solid consistency. The deposited metal can be easily stripped off either continuously or intermittently above the surface of the electrolyte.