QTR-Quadtone RIP

Hello, I'm new to QTR.  I've looked through the archives and haven't found this problem, but 
hope someone might have insight.  I am printing to an Epson 2200 using PS CS2 and the UT7 
inkset from MIS, onto Moab Entrada paper.  I have made about 20 prints that have worked 
great but in some of the most recent prints I have been getting sets of very fine lines in the 
deepest shadow areas.  Not on all prints and only in some shadow areas.  I've tried cleaning 
the nozzles but the problem continues in just those select  prints and repeats identically in 
those images in those specific areas.  ?  Any thoughts would be greatly appreciated.  Many 
thanks in advance.  Morgan

Try different "dithers" (QTR adjustment)...hard to predict which will
work best..I'm currently using Floyd Steinberg with Moab Kayenta. 

--- In QuadtoneRIP@yahoogroups.com, "curiousiz" <m@...> wrote:
>
> Hello, I'm new to QTR.  I've looked through the archives and haven't
found this problem, but 
> hope someone might have insight.  I am printing to an Epson 2200
using PS CS2 and the UT7 
> inkset from MIS, onto Moab Entrada paper.  I have made about 20
prints that have worked 
> great but in some of the most recent prints I have been getting sets
of very fine lines in the 
> deepest shadow areas.  Not on all prints and only in some shadow
areas.  I've tried cleaning 
> the nozzles but the problem continues in just those select  prints
and repeats identically in 
> those images in those specific areas.  ?  Any thoughts would be
greatly appreciated.  Many 
> thanks in advance.  Morgan
>