Electrolytic graining
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 8, 1985
Grant Date -
N/A
app pub date -
Aug 6, 1984
filing date -
Aug 6, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention features an electrolytic process for producing lithographic plates. The plates are immersed in a bath and fed a shaped alternating wave having a multiplicity of zero voltage intermissions. The grain topography of the plate can be varied by changing the frequency and duration of the intermissions in the wave.
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