METHOD FOR ELECTRO COPPERPLATING SUBSTRATES

摘要

A method for electro copperplating substrates, using insoluble anodes in aci d copper baths and a separate supply of used copper ions. The inventive method is characterized in that the bulk of the copper ions are supplied directly without the aid of diaphragms and auxiliary electrodes in the form of copper carbonate and/or basic copper carbonate in a separate tank which is directed towards the working electrodes via a bypass, whereby the gaseous CO2 thus released is separated in the separate tank.