QTR-Quadtone RIP

Hi Paul,

In the PDF, you note that:

`If the LM fades faster than the LC, the print will take on a green hue that most viewers find rather unpleasant. How well matched the LM and LC color pigments are in terms of their rates of fading becomes a significant issue for image stability.'

Seems like a big caveat. Is it possible to quantify or mitigate the risk here? I'd probably be using Canson Baryta Photographique, so presumably a fair amount of LM and LC would be needed for a neutral print.

Thanks, 

Mark  


--- In QuadtoneRIP@yahoogroups.com, Paul Roark <roark.paul@...> wrote:
>
> The blended color + carbon inksets have had some issues with separation in
> wide format printers.  Take a look at the graphs at page 4 of
> http://www.paulroark.com/BW-Info/4K+.pdf.  For that reason, I abandoned
> blended inks in such printers.
> 
> On the other hand, the HP Z3100/3200 inks do not separate significantly.
>  When diluted with the generic base, the cost of such inks is not bad at
> all, and the lightfastness would be way more than third party blended B&W
> inks.
> 
> For  my latest glossy pigment inkset approach for wide format, see
> http://www.paulroark.com/BW-Info/4000-6K-Plus.pdf   I like the separate
> light colors for several reasons.  I used Epson LM and LC with MIS carbon.
>  That gives me very economical, low-bronzing MIS carbon with the very
> lightfast Epson colors.  It also allows full 3D profiling with QTR.  The
> more economical MIS light colors could, of course, be used also.  In my
> view, however, so little color is actually used that on a per print basis,
> the cost difference is minimal, yet the image stability difference would be
> substantial.
> 
> I liked the basic approach well enough that when I went back to dyes in
> wide format I stayed with the multiple grays with high gamut light colors
> for toning.
> 
> Paul
> www.PaulRoark.com
> 
> 
> mkkura2002 <kura@...> wrote:
> 
> > **
> >
> >
> > I'm printing with UT14 inks on Ilford Gold Fibre Silk and FA matt paper
> > with very good results, but I need wider printer. Can someone recommend me
> > solution - I think about Epson 7600/9600 with UT 7.
> >
> > Marcin Korczak
> >
> >  _
> >
> 
> 
> [Non-text portions of this message have been removed]
>