QTR-Quadtone RIP

Parker,


> Can you suggest one of the existing profiles for the 7800 to use?
>

I'm not sure what you have.  I have the profiles posted at
http://www.paulroark.com/BW-Info/7800-EbHP-2013-Profiles.zip .

I have the printer set per your recommendations, but it seems most of the
> profiles you provided have channels turned off, either to do a straight E6,
> or create a cool tone.
>
You're correct.  I had not reviewed them recently.  What I do a lot is use
a 100% Eb6 profile plus an HP (cool) profile, mixing them as needed with
the QTR sliders.  You can do the same thing to get all the inks firing.
 I'd overweight the Eb6 profile, since that is where most of the inks are.
 That is, have the Eb6-only profile be about 75% and the HP/cool profile be
25%.  This is probably the easiest way to use all the inks.

There is an ICC that is a blend of both.

I tried to find one where the cyan channels were set as toners; ...
>
There may not be any QTR profiles set up that way.  To do so, just activate
the second LM and M, in the LC and C positions, call them toners, have
their densities be the same as the other LM and M, and assign 1/4 of the
dilute ink limit to them and 3/4 to the gray channel dilute inks.  These
will need re-linearizing, I assume.

For at least some of the profiles I have overweighted the Y (2%) ink.  For
these, to keep that approach (which holds down the highlight warmth) I
would just have the second LM and M copy the curves from the original LM
and M and have the ink limit for each half of what is currently assigned in
the profile.

Hope this helps.

Paul
www.PaulRoark.com


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