Digital BW, The Print

Roy,

>I'm curious just what you've got here.  Is it that this one specific
>paper Smooth Pearl is somehow compatible with Eboni but
>others aren't? 

It has worked on all the RC papers I've tried so far.

>Or are you just not using the Eboni ink by making
>the 100% spot just 100% R and G and 0% B -- i.e. the dark warm
>gray and dark cool gray inks are enough to give a great dMax.

I can't tell since I use the Epson driver.  The way to test this would be to
put a cart of flushing fluid (or water) in the color cart positions and see
if any black is being printed.  I have not done this yet.

I have used different amounts of RGB and find that even when I think there
must be significant amounts of Eboni being put into the image, the binder
that is in the color position inks seems to hold the Eboni down.  Eboni will
not stay in suspension in the UT base, but on the paper that doesn't matter.
There may be enough overlap in the very dark areas that the UT base binder
is doing an effective job.

It's a little hard to imaging that I could get dmaxs of 2.3 with just the
cyan and magenta position gray inks.

This would almost certainly work with your system and UT2.  The advantages
are obvious and, frankly, rather overwhelming.

Paul
www.PaulRoark.com 
________________________



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
<paul.roark@v...> wrote:
> OK, this is a little half-baked, but the bottom line is that I've hit a
dmax
> of 2.28 on Ilford Galerie Smooth Pearl - with Eboni.  There is not
> significant dusting or rub-off.
> 
>  
> 
> The secret is that the UT2 (and perhaps UT1) inks use a base that is the
> glossy binder.  It's not an acrylic coating on the particle.  So, I don't
> let Eboni sit there by itself - or barely at all.  So, to the extent there
> is Eboni there, it is held by the base that carried the other inks into
that
> spot.  The best dmax so far is with the yellow position sepia toner pulled
> out entirely at the 100% spot.  
> 
>  
> 
> Whether I can write full curves for this is untested.
> 
>  
> 
> So, there is more to do here before declaring any kind of victory, but we
> may not need to mess with switching blacks any more.  Now that would be
> nice.
> 
>  
> 
> Paul
> 
> www.PaulRoark.com <http://www.paulroark.com/>  
> 
> 
> 
> [Non-text portions of this message have been removed]


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