Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "piezo7000uk"
<piezo7000uk@y...> wrote:
>
> Can anyone recommend B&W quad set for Epson 7000 ?
> MIS?  
> The only OSX RIP for the 7000 seems to be Bowhaus - any experience
setting this up?

I recommend QTR. You can set it up for the 7000.
 
> I intend to output large positves on Pictorico OHP transparency
material for darkroom 
> contact process (polymer gravure).

Please, "giclee" is bad enough. Let the term "polymer gravure" die. 
 
> Max Density range (transmission)  required is :  D 0.4 - D 1.7
> 
> (methods a la Dan Burkholder).
> 
> Any guidance on this appreciated.

If the 7000 is anything like the 2200 or the 4000 in this, I'd suggest
six inks. My setup for digital negatives is MIS PKN at 100%, 32%, 10%,
3.2% and 1% dilutions, and Eboni at full strength.

PKN bottoms out at a transmission density around 1.5 on Pictorico OHP,
Eboni can hit 2.0, btut I don't typically let it. Eboni is fragile,
and can smear on OHP, especially at high ink loads. A quick spray of
fixative makes it settle down. For the Epson 2200 at 2880 DPI, the ink
limits are 42% for all PKN channels, 30% for the Eboni. I'm planning
to try a mixture of 70% eboni, 30% glop, to see if it makes a nice
"negative black" that won't dust...

The ink limits, obviously, will be different for the 7000. You want to
lay down as much ink as you can, without losing detail. On digital
negatives, white spaces between dots are the enemy. Close them off by
usin gmore ink of the lower dilutions, get the ink limits as high as
you can. You'll use more ink this way, but compared to the cost of
coating a decent sized sheet of paper for even the cheaper alt
processes, you won't mind 20% higher ink consumption.

> Do not want to sell 7000 (prob not possible now)  and buy Epson 7800
 /RIP / K3 etc..

Actually, there is a market for 7000, they just don't sell for real
high prices. Make the buyer pay the shipping ;)