QTR-Quadtone RIP

FWIW,

Making digital negatives with black ink really doesn't yield the best 
results. The process adjusment curve required for BO negatives is 
more extreme and may actually cause certain tones to be distorted or 
lost. I would encorage you to check out Precision Digital Negatives 
if are planning to make a lot of negatives.

Don Bryant

P.S. Mark's system doesn't utilize a RIP, rather it relies on the 
Epson printer driver. Although this may sound as though control of 
the negative printing is less than say using QTR it really isn't. 
Also the dither algorithm the Epson driver uses is superior to the 
one implemented by QTR for digital negatives giving smoother results.
 
> >
> > I have an Epson 2200 with the Neutral K7 inkset.  Does anyone 
have a
> profile for making 
> > digital negatives on Pictorico OHP film?  Any suggestions?
> 
> I don't have one for neutral K7, but I have made them for my own
> custom mix of MIS inks, which is slightly similar (100%, 42%, 10%, 
4%,
> 1%, glop, and eboni). Here's a few lessons I learned.
> 
> Don't use the lightest ink in the K7 set. Nothing past about 2%
> matters in a digital negative, and shaving the light ink will reduce
> motteling.
> 
> Reduce the overlap parameters substantially. This will also reduce
> motteling. I think I built at 3% overlap.
> 
> Build the profile at 2880, not 1440.
> 
> Try 65% as your ink limit. That sounds high for 2880 on an Epson 
2200,
> but the Pictorico can take it, and that will get you to a negative
> density of around 2.5, if memory serves.
> 
> Do not measure densities until all the binder evaporates out of the
> print. This may take a day.
> 
> Good luck, have fun.
>