Digital BW, The Print

Roy, et al,
I love QTR, and mostly the RIP has been flawless. However,  I have noticed in photos 
with large, very dense black areas, vertical lines (perpendicular to the print head 
direction). The latest photo had only 2, maybe 1" apart, but I have seen more and 
closer spacing. I saw it on Kirkland paper, but it persists on Epson Premium Glossy 
as well. If I print the photo in color (almost black and white in the latest case, as it 
was of a snow sculpture at night) using the Epson driver, I have no lines. 
I'm setting QTR to "1440 super" and "better" rather than "faster."
Is this ever a problem for others? Is there a setting I should change?
Sarah

Sarah,

There are occassions when QTR will print some bands in all black 
areas.  From what I have heard, it has to do with the gimp engine.  
If it is the same problem I had, I solved it by adding about 2% noise 
to the shadow areas using Photoshop.  I have also heard (but not 
tried) using a different dither algorithms.  

Give it a try with the same image and see if it works for you.

Lou

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "jessupsa" 
<sjessup@c...> wrote:
> 
> Roy, et al,
> I love QTR, and mostly the RIP has been flawless. However,  I have 
noticed in photos 
> with large, very dense black areas, vertical lines (perpendicular 
to the print head 
> direction). The latest photo had only 2, maybe 1" apart, but I have 
seen more and 
> closer spacing. I saw it on Kirkland paper, but it persists on 
Epson Premium Glossy 
> as well. If I print the photo in color (almost black and white in 
the latest case, as it 
> was of a snow sculpture at night) using the Epson driver, I have no 
lines. 
> I'm setting QTR to "1440 super" and "better" rather than "faster."
> Is this ever a problem for others? Is there a setting I should 
change?
> Sarah

On Sat, 05 Feb 2005 22:00:25 -0000, "jessupsa" <sjessup@...>
wrote:

>
>
>Roy, et al,
>I love QTR, and mostly the RIP has been flawless. However,  I have noticed in photos 
>with large, very dense black areas, vertical lines (perpendicular to the print head 
>direction). The latest photo had only 2, maybe 1" apart, but I have seen more and 
>closer spacing. I saw it on Kirkland paper, but it persists on Epson Premium Glossy 
>as well. If I print the photo in color (almost black and white in the latest case, as it 
>was of a snow sculpture at night) using the Epson driver, I have no lines. 
>I'm setting QTR to "1440 super" and "better" rather than "faster."
>Is this ever a problem for others? Is there a setting I should change?
>Sarah
>
Sarah,
There do seem to be a number of issues with QTR, and dense areas or
vertical lines with QTR. I think all the reported problems have so far
been with the Windows version, and are so far unresolved. What printer
and computer are you using? 
mike
Mike Finley, http://www.efikim.co.uk