QTR-Quadtone RIP

Hi Frank,

Separate.  You must use a paper curve on the driver page.  This is an
integral part of how ink is to be used.   Even if the paper is not the same as
you have, pick something that is similar.

ICC profiles are at a much higher level.  This is the industry
standard color management
system.  With color printing this is usually very important to match
print to screen.
With B&W you can get away without it -- (edit your file to make darker
or lighter).
But it's an additional refinement which can make things easier.   ICCs
are always
built on top of specific settings in the driver both for color and
B&W.   So they are only
good for particular driver settings i.e. in QTR curves, resolution, ...
However since the curves are all made with a similar linearization it
turns out the
generic icc's work quite well.  This is the basis of the
QTR-Gray-Matte-Paper etal,
profiles.   Use these in the print dialog of Photoshop for Mac or
convert-to-profile for PC.

When you are just starting out I'd recommend leaving out all the icc stuff.  Get
to know the curves and what they all do.  Later on you can figure out
whether its
worth adding icc workflow.

Roy


On Sun, Jun 13, 2010 at 6:50 PM, Frank <frankp0@...> wrote:
> Roy,
> Thanks. Let me be sure I understand. QTR has some built in paper curves (i.e. EEnhMatte, HPhotorag, etc). Are the two gray.icc to be used instead of these paper curves? Or are they separate? By separate I mean convert to gray.icc in Photoshop then print with QTR using a paper curve?
>
> And what do you mean by grayscale color management problems?
>
>
> Thanks
>
> Frank
> --- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
>>
>> Hi Frank and Catherine,
>>
>> The two Gray and two RGB icc profiles that come with QTR are generic
>> printing profiles that can compensate
>> for the dmax's of either matte papers or photo papers.  It's most
>> obvious on the matte papers
>> with a lower dmax (i.e. blacks are not as dark).   The idea is to use
>> color management software to
>> make the print look closer to what you see on the screen.   They are
>> for printing -- softproofs won't
>> show anything different.
>>
>> On PC's you Convert-to-profile to the appropriate icc, then save and
>> print with QTR.   On Mac the
>> idea is to just select it as a Print Profile in PS.  (Unfortunately
>> CS4 and I think CS5 have some
>> trouble with grayscale color management so I use CS3).
>>
>> Also the RGB versions are functionally equivalent but needed if you
>> are using a program that only
>> supports RGB, not grayscale.
>>
>> Roy
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