Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Forming nonmetal coating using specified waveform other than...
Patent
1992-09-01
1994-04-19
Valentine, Donald R.
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Forming nonmetal coating using specified waveform other than...
205201, 205214, 2041291, 20412935, 2041294, 20412975, 204DIG8, C25F 102, C25F 304, C25D 1108, C25D 1124
Patent
active
053042980
ABSTRACT:
A process for roughening aluminum or aluminum alloys useful as support material for printing plates, in which process two electrochemical roughening steps are carried out in direct succession and are followed by a pickling step. Printing plates are produced from this support material by coating with light-sensitive coatings, which printing plates, when exposed and developed, give corresponding printing formes of very uniform topography, high run stability and good damping agent supply.
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Hoechst Aktiengesellschaft
Valentine Donald R.
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