Rollers for a lithographic ink supplying system
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United States of America Patent
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-
Jan 22, 1991
Grant Date -
N/A
app pub date -
May 23, 1988
filing date -
May 27, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A roller for use in lithography which comprises a surface layer of finely and uniformly mixed ultra-hard material and lipophilic material. The ultra-hard material is preferably tungsten carbide-cobalt and the lipophilic material is preferably aluminum bronze casting, the aluminum bronze casting being mixed with the tungsten carbide-cobalt in the ratio of 25-40% by weight.
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