<p>Aluminium sheet suitable for use as a lithographic plate support has a surface that is uniformly rough by virtue of: a rippled topography having an aspect ratio of at least 1.3 on a sale of 5-200 mum; and a superimposed pitted structure on a scale of 1-20 mum. A method of making the aluminium sheet involves pack rolling two aluminium ribbons to generate facing surfaces having the transverse rippled structure; followed by a small amount of a conventional roughening or graining treatment to develop the pitted structure.</p>
申请公布号
EP0720516(A1)
申请公布日期
1996.07.10
申请号
EP19940926999
申请日期
1994.09.21
申请人
ALCAN INTERNATIONAL LIMITED
发明人
LIMBACH, PETER, KARL, FERDINAND;AMOR, MARTIN, PHILIP;BALL, JONATHAN