Re: 100% GCR with UCA?
Re: 100% GCR with UCA?
- Subject: Re: 100% GCR with UCA?
- From: email@hidden
- Date: Wed, 22 Oct 2003 08:38:50 EDT
In a message dated 10/22/03 7:23:57 AM, email@hidden writes:
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Thanks for spending some time on this. It's getting very difficult for me to
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completely understand exactly how to acheive what I need so, I decided to
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speak a thousand words with a picture! Sorry that the rest of the group
can't
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see this, but attachments don't carry through to this list. Anyone
interested,
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drop me a line and I'll send a copy.
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For a description in text, this is what I think David is suggesting:
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100% GCR setting, Black generation starting at zero at 45 degree angle upto
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the point where colour is required to enrich the black. At that point, dip
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the black to add colour.
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Using UCA would start the UCA toe lower than your first diagram (never heard
of a UCA toe control... but I guess it would be possible to build that feature
into a program, the interaction of all these functionsb becomes mind
bogglingly complex, however).
Your second diagram is indeed the alternative I am describing; though you
don't have corners in a spline-defined curve, so the start of the dip would be
a
curve instead of an angle, and the end could curve right up to 100% (or fall
short of it if you like) instead of easing back to the original ramp with a
recurve, if you prefer. Whether this configuration will give you good results
in
print is a different question than how you would generate this seperation; I
was giving you what you were asking for, without really knowing if its a
reasonable seperation for your usage.
C. David Tobie
Product Technology Manager
ColorVision Inc.
email@hidden
www.colorvision.com
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