Digital BW, The Print

Mitch,

You raise a very important distinction between the canned QTR set-up 
and IP.  I believe with QTR on UC inks the preponderence of inks 
layed down are black, and light black.  Light magenta and light cyan 
are used only to control warm/cool/selenium (although they provide 
density too).  Yellow is used only on sepia curves.  No use is made 
of magenta and cyan inks, specifically to reduce/eliminate 
metamerism.  The Photoblack ink of UC is supposed to be extremely 
warm (more so than matte black), and is difficult to neutralize with 
just the light magenta and light cyan.  IP may work differently, but 
could introduce the dreaded metamerism, and infact I remember seeing 
a demo of IP where b/w prints were made with specific viewing 
conditions in mind.  Not an issue for many people - but I find hue 
shifts rather annoying.

Shilesh

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "alland20854" 
<mitcha@m...> wrote:
> 
> > You get get stronger black using the photo lack ink on resin 
coated 
> > papers, but that introduces bronzing problems and a very warm 
tone.
> 
> I use ImagePrint on Epson Semi-Matte, and there is no problem of a 
warm tone (i.e., with 
> Ulttrachrome inks). In any case, the ImagePrint Tint Picker 
facility allows "toning" in fairly 
> wide range, also split-toning (IP6). 
> 
> However, there is still a bronzing problem which largely disappears 
by waxing with 
> Renaissance Wax -- I suppose that spraying with PrintGuard or 
similar spays has a similar 
> effect, but I haven't been able to try this because these products 
are not available here.
> 
> But my current solution to bronzing is to laminate the prints: I 
have the prints hot 
> laminated with 2-3 coats (glossy surface), which inceases the Dmax 
and saturation 
> substantially -- and no one can tell these are not silver prints. 
Indeed, the look is that of 
> face-mounted prints on acrylic (plexiglass). Here in Bangkok it 
costs me only $10 to have 
> 24x36 inch print hot laminated (by hand) and mounted on MDF with a 
one-inch frame 
> behind it, but in the states and Europe, the cost for similar might 
be around $200. But you 
> can cold laminate on a press quite inexpensively, I believe.
> 
> --Mitch/Bangkok