QTR-Quadtone RIP

Joost,

Thanks for your reply. I indeed use the Epson OEM ink cartridges and 
Windows XP Home Edition. 

After reading more on this forum I changed my dpi from 2880 to 1440 
and now my prints are much lighter, but they are now way too light 
and seem to lack contrast and my blacks are too light as well.
The QTRgui Help feature nor the User guide say anything very specific 
about what dpi to use, except that on the one hand I am let to 
believe that it doesn't matter much (it matters a lot in my case!) 
and on the other hand it is suggested to change dpi if results are 
not satisfactory; I can't find any definitive instructions on what 
dpi to use and how it would make a difference.

On your suggestion I converted my image, previously with the Adobe 
RGB (1998) profile, to QTR - Gray Lab and this doesn't change the 
print one bit.

So, is this the kind of monitor-to-print mismatch that I should 
expect, which would require me to retweak every image before printing 
using QTR? That's hard to believe given the praises that I read about 
the program.

Suggestions are more than welcome!

Frans Waterlander

--- In QuadtoneRIP@yahoogroups.com, "Joost Horsten" <j.h.j.h@...> 
wrote:
>
> Frans,
> 
> Before delving into your question deeper: what inkset do you use 
> (from the profiles you use I guess the OEM inks) and what OS are 
you 
> using?
> 
> Good chance that indeed the problem is that you have not converted 
> your file to the right icc profile. QTR works in the LAB space and 
> assumes your image is converted to it. The GRAY-LAB profile come 
with 
> the installation
> 
> C:\Program Files\QuadToneRip\icc\gray-lab.icc
> 
> Make sure you CONVERT the image to this profile and not just ASSIGN 
> the profile to the image. QTR ignores assigned profiles.
> 
> The directory above also contains some other gray icc-profiles for 
> matte and glossy papers. But I have never find them of any use.
> 
> Personally, I never touch the ink limit and gamma adjustment 
sliders. 
> I regard them more as a last minute rescue feature than as a 
serious 
> profiling instrument.
> 
> Good luck,
> 
> Joost
> 
> 
> --- In QuadtoneRIP@yahoogroups.com, "fwaterlander" <frans2001@> 
> wrote:
> >
> > I'm just starting out with QTR. I use it to print on Epson 
Enhanced 
> > Matte Paper and the prints are way too dark for all 4 choices: 
> cool, 
> > cool selenium, sepia and warm. My printer model choice in QTR is 
> > Quad2200, I use one curve only and no Ink Limit or Gamma 
> adjustments. 
> > I don't want to fiddle with the gamma setting, because I think 
> there 
> > is an issue that I don't understand yet. 
> > 
> > My prints using the Epson driver match my images on the monitor 
> very 
> > closely and are way lighter than what I get using QTR.
> > 
> > A post from last year suggested to assign a QTR profile to the 
> image 
> > file before saving as tiff but a) I can't find QTR profiles to 
> > download from the QTR website and b) I would think that by 
choosing 
> a 
> > curve in QTR it has all the information necessary to print 
> correctly, 
> > including tonality.
> > 
> > Can anybody help me with this issue?
> > 
> > Thanks,
> > 
> > Frans Waterlander
> >
>