QTR-Quadtone RIP

I have been having the same problem on prints with deep black shadows. 

Am using:

QTR 2.6.1
Mac/ 10.5.4
CS3 10.0.1
Epson R2400 w Epson inks (matte only)

with stock QTR profiles and switching to 2880 dpi notonly gets rid of the banding but 
makes for a hands down better print although the printing time more than doubles.
 






--- In QuadtoneRIP@yahoogroups.com, "jesse.pesta" <jesse.pesta@...> wrote:
>
> I  had stubborn banding in dark areas. Here's what worked for me, in case it helps 
anyone.
> 
> Using:
> 
> QTR 2.6.1
> Mac/ 10.5.4
> CS3 10.0.1
> Epson 2200 w Epson inks (matte only)
> 
> Okay. We're talking about faint but clear banding in line w/ the printhead, showing up 
only 
> in deep shadows. Cleaning, aligning etc. didn't help. I followed advice in this forum -- 
> switched dithers, resampled to 360ppi and 720 ppi, switched between 1440-super and 
> 1440 regular. Various combos did help, but nothing worked completely. Adding 
gaussian 
> noise to the shadows also helped, but weakened the deep blacks.
> 
> Solution: Print at 2880 dpi, even though the profiles are designed for 1440. (I use the 
> stock QTR profiles) Printing at 2880 made prints come out very, very dark w some 
> 'bronzing" (or whatever you call it where parts of the print look splotchy from some 
> angles). To compensate for the darkness/splotchyness, I set "ink limit" to a whopping -
42.
> 
> It's not graceful but it worked. No splotches, and the final print is very close to what I 
was 
> aiming for. 
> 
> Naturally, am very interested if anyone has better ideas or if I've missed a better 
solution. 
> thanks and best.
>