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AssigneesFuji Photo Film Co., Ltd., Nippon Light Metal Company, Ltd.
InventorsTakanori Masuda, Tsutomu Kakei, Teruo Miyashita, Akira Morita, Masahiro Takahashi
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A method for continuously electrolytically processing a metal web in which the consumption rate of graphite electrodes is remarkably reduced. Auxiliary anodes made of a nonreactive material are provided separately from the graphite electrodes. One half of a symmetrical waveform is applied directly between the graphite electrodes, while for the other half of the waveform, a portion of the current is distributed through the auxiliary anodes. In this manner, the magnitude of the current contributing to a cathode reaction on the surfaces of the graphite electrodes is made larger than the magnitude of the current contributing to an anode reaction on the surfaces of the graphite electrodes, thereby reducing the consumption rate of the graphite electrodes.
In a method for continuously electrolytically processing a metal web using graphite electodes and a symmetric alternating waveform current, the improvement wherein a part of a half cycle of said current is bypassed into at least one separately provided auxiliary anode through diode means so that the magnitude of a current contributing to a cathode reaction on surfaces of said graphite electrodes is larger than the magnitude of a current contributing to an anode reaction on said surfaces of said graphite electrodes.
Dependencies are inferred from the claim text.