Digital BW, The Print

> Let me add a couple of things:
>
> First, it is definitely the way the Epson 4000 is dealing with black
> generation. I'm used to making digital negatives on the Epson 2200,
> 7600, and several other machines. I've built curves for a lot of
> different silver and alternative process (Pt, Pt/Pd, gum, cyanotype,
> Azo). The 4000 is an entirely different animal.
>
> It appears to have a lot to do with differences between the reflective
> and transmissive density of the Epson PK, light black, and whatever
> colors are mixed in by the Epson drivers.
>
> The crossover problem extends to every paper type that I've tried, so far.
>
> I'm beginning to think that the answer is a RIP. Has anyone ever made
> digital negatives using one? Our experiments with QTR show that the
> dither pattern is just too obvious for digital negatives. Our Onyx RIP
> also has an ugly dither. Has anyone tried ImagePrint on digital negatives?
>

I'm just picking up this thread part way through. Are you just using
black/lt black inks for the negs?

The best digital negs I've seen were made using the colour inks - a nice
emerald green on pt/pd for example (red seems to give too grainy/artefacty
negs)

Have you tried the PDN curve setup system?

There is a lot of good discussion on digital negs over on the APUG list(of
all places!)

I recall a recent thread on the 4000 where just increasing the ink setting
(in the printer) +10 or 15% sorted out some density problems
>