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US5045157A Process for producing aluminum support for printing-plate 失效
生产印版用铝支架的工艺

Process for producing aluminum support for printing-plate
摘要:
A process for producing support for aluminum printing-plate in which an aluminum support is electrochemically surface-roughed uses an alternating current in an acid electrolyte containing nitric acid. The alternating current has a waveform in which the frequency is within a range of 60 to 140 Hz and the ratio of an anode time t.sub.F to a period T, that is, t.sub.F /T, is within a range of 0.33 to 0.15, and this current is used as an electrolytic power source.
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