Digital BW, The Print

Paul 

Thank you so much for your quick response. I now have a better understanding of how I 
might try to nudge your curves. Incidentally my first image useing your UT7-22--EEM-
Neutral-1 turned out quite good.
Another question comes to mind . Have you or anyone to your knowledge explored the 
construction of an algorithm for blending two profiles?

Thanks again

Howard  

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" <paul.roark@v...> 
wrote:
> Howard,
> 
> > I'm beginning to explore curve editing of Paul Roark's UT7 profiles ...
> >I can see where the green curve controls the cooling toner
> 
> The inks in the magenta and light magenta positions are more than just
> toners.  They are essentially the same density as the warm gray inks.  So,
> rather than a toner, think of them as a set of cold gray inks similar to the
> warm gray C & LC inks.
> 
> > and the blue curve controls the sepia toner. 
> >The red curve controls the light and dark grey.
> 
> These are pure carbon pigments -- quite warm, about half way to sepia.
> 
> > How does one control the Custom Light Black and the Ebony Black? 
> >Also is there a way in which you can control the input from the 
> >cool toner and the light cool toner separately? 
> >Is there a way in which you can control the input of the Dark
> > Grey and Light Grey independently?
> 
> No, with the Epson driver the driver controls the cross-overs between the
> light and dark inks.  This is not necessarily bad news.  The red curve, for
> example, controls the entire warm carbon ink combination with an excellent
> built-in cross-over included.
> 
> The LK is a bit of a wasted ink when B&W inks are in the UC printer and the
> Epson driver is used.  
> 
> The Eboni is turned on by the driver as the RGB curves approach the black
> point.  It's just another cross-over, but one that looks at all three of the
> RGB curves.  For the glossy papers I stop the Eboni from printing by keeping
> the blue curve at the top (turned off).  This allows the C & M to pour in
> and form a good dmax without the Eboni being turned on by the driver.
> 
> If you want independent control of the inks, one of the rips like QTR or IJC
> is the way to go.
> 
> Hope this helps.
> 
> Paul
> www.PaulRoark.com