QTR-Quadtone RIP

Joe,

Thanks for your ideas.  I tried them, but I'm still getting the horizontal banding.
1.  All the head alignments have been done using Crane Silver Rag.
2. The manual nozzle check examined with a loupe looks perfect to me.
3. When I print the 21 step gray scale with the Epson driver or ColorBurstRip, no horizontal 
banding appears.  Only QTR seems to have this problem.  This makes me think it is a 
paper feed adjustment problem.
4.  The banding is worst at 2880, unidirectional.  Both shadows and midtones are effected.  
The same problem occurs with MK inks on matte papers, but to a lesser extent. 
5.  At 1440super unid', the banding is evident in the lighter midtones, not so bad in the 
darker midtones or the shadows.  If I can't solve this problem, I'll reprofile for 1440super.

Any other thoughts?

Don

--- In QuadtoneRIP@yahoogroups.com, Joe Szabo <js@...> wrote:
>
> Don,
> 
> Here's some info i received.  It made all the difference to me.
> Best of Luck
> Joe
> 
> Hi Joe,
> 
> 
> 
> The banding is probably caused by one of two different things (or both):
> 
>   1.. Missing nozzles in the nozzle check pattern will leave gaps in your
> print, giving you white banding. Print a "manual" nozzle check pattern, and
> look at it carefully for missing, or misplaced horizontal lines.
>   2.. Print head needs to be aligned to the paper you're using. You can use
> either side of the Epson paper, as long at it's the right thickness.
> 
> 
> Also, you should be feeding the paper from either the top (normal) paper
> tray, or from the back paper feed slot. Apparently, feeding the paper from
> the front of the printer can give problems.
> 
> 
> 
> Finally, if your print speed or quality setting is set to "faster" or
> "bidirectional," change it to "better," or "unidirectional."
> 
> 
> 
> Let me know if this helps.
> 
> 
> 
> Thanks,
> Jeff
> 
> 
> 
> 
> 
> 
> ---------------
> 
> Please note that my new email address is js@...
> 
> www.josephszabophotos.com
> 
> 
>   -----Original Message-----
>   From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com]On
> Behalf Of dflysons
>   Sent: Wednesday, May 23, 2007 10:01 AM
>   To: QuadtoneRIP@yahoogroups.com
>   Subject: [QuadtoneRIP] Re: Paper Feed Ajustments in QTR
> 
> 
>   --- In QuadtoneRIP@yahoogroups.com, "dflysons" <lysonsfamily@> wrote:
>   >
>   > I'm using MIS Pro inks in an Epson 4000. Recently I've noticed white
> horizontal banding
>   less
>   > than 1mm apart in my B&W QTR images. I'm printing on Crane Silver Rag at
> 2880,
>   > unidirectional with PK black. It also happens on matte papers with MK.
> I've done a "puddle
>   > clean" with Windex, cleaned the wiper arm and the surface of the print
> head. I then did
>   > several control panel print head alignments. I now get a perfect nozzle
> check pattern
>   > (examined with a loupe), but the lines are still there. I think I need
> to change the paper
>   feed
>   > adjustment. Does anyone know if there is a way to do that in QTR?
>   >
>   > When I print the same image using the Epson driver with the paper feed
> adjustment at zero
>   > (default) no white lines are present.
>   >
>   > Don
>   >
>   I'm using a G4 Mac OS10.4.9 with QTR 2.5.1
> 
>   Don
> 
> 
> 
>   
> 
> 
> [Non-text portions of this message have been removed]
>