Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "koloshor" 
<koloshor@...> wrote:
>
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Steve"
> <dazedgonebye@> wrote:
> >
> > So, the piezotones don't work on glossy papers?  If so, they must 
not 
> > work on OHP....
> > That would have me switching back and forth between epson color 
inks 
> > for digital negatives and piezotones for black and white prints.
> > 
> > Can anyone confirm this?
> 
> It depends on how you define "work on OHP".
> 
> Piezotones are "matte black" inks. They're really concocted to go
> slightly into the surface of a fibrous paper. On a smooth resin 
coated
> paper (or film, like OHP or HGW) they stay on the surface, and have 
a
> "sooty" appearance. They don't bond well to the surface, and can rub
> off. A quick coat of "print shield" (or probably even Krylon) can
> neutralize that.
> 
> The advantage of using a matte black for a digital negative is that
> you can build tremendous density, up to about density 4 (I can't
> measure 4, I determined it by running 10x as long an exposure with 
the
> digital neg as with the Stofer step wedge).
> 
> Personally, I don't find that extreme density useful for any 
process,
> and typically print all my digital negatives without the use of any
> "matte black" component.
> 
> My own B&W is done with something I cobbled together with two MIS
> inks, dilutant, and the glop "gloss coat". For digital negatives, I
> use 5 dilutions (100%, 32%, 10%, 3.2%, and 1%) of MIS PKN ("neutral"
> carbon black).
> 
> For matte papers, those same five PKN dilutions, plus MIS "eboni" as
> the matte black. For gloss, the five PKN dilutions plus glop, and no
> eboni.
> 
> Hey, have I talked to you on another forum recently?

So, it sounds like I'm going to have a hard time doing digital 
negatives with the same printer I would like to have dedicated to 
black and white.  
Switching back and forth from color to piezo sounds like no fun at 
all.  The web site says it's easy, but my limited experience with 
printers would say I'll have a hard time at it.

I'm on several forums, I'm not sure if we've spoken elsewhere.  I'm 
often on rangefinderforum.com and sometimes fredmiranda.  I help 
moderate a small forum for manual focus lenses as well.
>