Re: Ink Restriction
Re: Ink Restriction
- Subject: Re: Ink Restriction
- From: Mark <email@hidden>
- Date: Sat, 25 Dec 2004 20:53:45 -0500
Terry,
On 12/21/04, Terry Wyse wrote:
If you're strictly doing proofing, you can usually restrict the inks
a bit further to maybe 3-5 points of chroma above what your press is
capable of. Chroma values of around C=65, M=80, Y=105 is usually
about right for commercial offset proofing.
What if the hue angles are quite different at a particular chroma value?
Suppose for yellow I have chroma = 89 and hue = 93 for a particular device.
On the device used to make the proof, I have a reading of chroma=90,
hue=88.5. The more I increase the chroma, the further away from the
hue angle I get. If I try and get closer to the hue angle, my chroma
falls below 89.
In such a case, is it better to try and match the chroma or hue
value? Is it better to take a value in the middle and split the
difference?
When I get scum dots in a pure yellow on the proof, in general, is
that because my hue angle is too far off, chroma is too far off, or a
little from column A, a little from column B? :)
Thanks,
Mark
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