Ender100@aol.com
Date: 10/11/03-09:44:20 AM Z
Hi Clay,
Yest that is the beauty of the stochastic screen method. If you are doing
multiple printings, similar to full color in the printing industry, then the
printings have to use Line Screen negatives with the linescreen at different
angles to avoid the moire patterns.
Stochastic, due to the random or psuedo random nature of the dots on the
negative avoids this. The trend in the printing industry is towards high
resolution stochastic, direct computer-to-plate printing. Alas, direct to plate
means that our imagesetters may not be around in years to come.
Regarding a related issue, has anyone found a way to diffuse the light from
the NUARC a bit so you don't get hot spots? I'm finding there is a fair
amount of variation in light across the table and would like to find a way to even
that out more...
Mark Nelson
In a message dated 10/11/03 8:48:38 AM, wcharmon@wt.net writes:
>
> As an aside, did any of you follow the discussion on the other alt-list
> about the ability of the Nuarc to generate nasty moire patterns in
> multi-layer gums when using linescreen imagesetter negs ? Stan Klimek
> and I both have seen this, and we both use plateburners. Three others
> on the list who use fluorescent light boxes use the same type of
> negative with nary a problem. If ever there were evidence that the
> collimated light of a plateburner is a little 'sharper' than the
> diffuse light of a light box, I think this would be it. FWIW, the
> stochastic screened imagesetter negs do not create this problem when
> used in a plateburner for multicoat gum.
>
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