QTR-Quadtone RIP

--- In QuadtoneRIP@yahoogroups.com, "edrudolpho" <erudolph@p...> wrote:
> --- In QuadtoneRIP@yahoogroups.com, "Daniel Staver" <daniel@p...> wrote:
>     snip
> > I made the UT7 curves that come with QTR. They should work fine on EEM and
> > Photo Rag. Let me know if you run into any problems and I'll see if I can
> > improve them. I haven't got much feedback on them yet.
> > 
> > --
> > Daniel Staver
> > http://daniel.staver.no
> 
> Daniel.... I'm not in front of my work computer right now, but as I recall, for 2200/UT7 
> there are only two supplied profiles.  Warm EEM and Cool EEM.  Are you saying that 
these 
> should work well for HPR as well as EEM?
> 
> Ed

I'm very new at this. I was looking for help when I noticed this thread. I have been 
exploring QTR with UT7 inks on the 2200. There were two profiles provided in the QTR 
download for matte paper.
 1)UT7-EEM_cool
 2)UT7_EEM_warm
I printed out some 29 step grayscales {standard 21 step with additional steps at either end 
to closely evaluate shadow and highlight regions).  I printed these with various blends of 
cool and warm. They uniformly exhibited what appeared visually to be very good tonal 
separation. However there was one problem. In the 96% to 100% region there was severe 
banding as well as a lightening of the tone. Nozzle and alignment checks were performed 
prior to printing the grey scales.
I printed the greyscales useing Roark's Curves and this problem did not occur. I would 
really like to continue with QTR. Does anyone have suggestions as to resolving this 
difficulty. Any help will be very much appreciated.

Howard