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Digital BW, The Print

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Re: QTR - Weird "Banding" Problem

2004-12-19 by Barry McWayne

I've had this same problem with my 2200 and 100% black grounds. 
Adding noise helps but does not remedy the problem entirely. 
Hopefully, Roy's working on a dither fix....
BJM

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "ldina" 
<lbdina@c...> wrote:
> 
> I'm new to QTR and am using v2.1b and the QTRgui interface on a 
> windows XP machine with a 2200.  I'm using Epson mk inks for now.
> 
> I just printed an image on 13 X 19 EpEnhMatte paper using the 
> UC_EEnhMatte-warm tone curve, with ink limit slider set to 20 to 
> deepen the shadows a little bit.  I used 1440dpi and "better" 
> settings.  In the setup I fed the paper narrow edge first, but 
told 
> QTR it was landscape so I could print on half a sheet (image size 
was 
> 8X10).
> 
> This is a portrait of a small boy with light features against a 
black 
> background.  In PS, the blacks are totally black (100K) and I 
saved 
> the file as a grayscale TIFF with embedded gamma 2.2 profile and 
> without LZW compression.
> 
> When it printed, I saw noticeable banding in the solid black area 
> (pure black to perhaps zone 4 or 5).  The bands are not totally 
even 
> in width and are about 1/2" wide, fading in and out, almost like 
> venetian blinds out of focus way in the background.  It is not 
> clogged nozzles, and besides, the banding is parallel to the long 
> edge (opposite of the travel of the rails the ink cartridges are 
> mounted to).  I checked the image in PS and the info palette shows 
> the entire area measures 100K.  As a reality check, I printed the 
> Image using ImagePrint and there was absolutely no banding.  
> 
> I'm a little stumped.  I love the quality of the image printed 
with 
> QTR, with the exception of the banding.  The banding only shows up 
in 
> the solid black areas, not on the child's face, hair or clothing.  
I 
> printed it a second time and got the exact same pattern in the 
exact 
> same locations.  I even shut of my computer and cold booted it and 
> the printer to be sure something wasn't corrupted.  
> 
> Any thoughts?  It wouldn't be 1440 dpi instead of 2880 would it?  
I 
> really love this product and would like to get it working.
> 
> Thanks,  Lou

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