Aluminium sheet with rough surface
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United States of America Patent
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Dec 7, 1999
Grant Date -
N/A
app pub date -
May 20, 1996
filing date -
Sep 21, 1993
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Abstract
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 ale of 5-200 .mu.m and a superimposed pitted surface on a scale of 1-20 .mu.m.
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