Digital BW, The Print

RGb - What it will tell you if your banding is being created by Studio Print settings or linearization drifting, or an issue with your printer. That is the fist place to start.

SP uses less ink and offers a better dmax but it also requires a more precise output curve. Like I said you may need to relinearize SP. 

Finally, there is a printer "quality" slider available in SP that can be changed for problem printers. One option you have is to move that slider up to say 30 or so if you really have to. The more you move that slider the more grainy the output becomes, but using around 30 will not effect your resolution very much if any.

First step is to shake your ink carts, run some ink through it and relinearize. SP is cumulative so I would do three sets of patches before you work that quality control slider if possible. Your right though, if any banding is evident it will show up in large areas of continuous tone, like a sky.

Try slowing your printer down to 8 pass ( read the manual to do that). That alone will most likely solve your problem. This is still a pretty fast printer, even at 8 pass and that always increases quality.

john

j

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Paul Kohl <pkohl@...> wrote:
>
> John,
> Thanks for the suggestions. I will try them. I am using StudioPrint, 
> as you do/did. In fact, you were very helpful in getting this whole 
> thing going some months back. I used the jpeg images you posted to 
> clean and empty the original carts before refilling them with Cone 
> inks. Thanks for all that help, by the way.
> So, I will try and see what's what.
> If I run this image through Photoshop as an RGB image using the black 
> ink setup I have, will that tell me anything? I will try and see.
> Paul
> 
> -- 
> Paul Kohl
> Visiting Professor, Photography
> Nanyang Technological University
> Singapore
>