Al(alloy) support material for use as off-set printing plates are mechanically and/or chemicallly or electrochemically roughened and then anodised in an aq. alkali electrolyte at a pH of min. 125 and voltage below 50V. The electrolyte contains an alkali metal hydroxide and a strongly alkali reactions salt in aq. solns..
申请公布号
DE3786149(D1)
申请公布日期
1993.07.15
申请号
DE19873786149
申请日期
1987.10.27
申请人
HOECHST AG, 6230 FRANKFURT, DE
发明人
BRENK, MICHAEL;ERNST, RENATE, W-6200 WIESBADEN, DE
