QTR-Quadtone RIP

Thanks for the clarification Paul - I was possibly using that blend in 
an 1160 ... I certainly started with one of your blends (UT-FSN?) after 
trying the Lyson Small Gamut inks. Now I'm back to one printer for B/W 
and colour (3880) using the Ultrachrome inks - I don't do enough 
printing nowadays to justify two printers!

On 28/12/2013 22:39, Paul Roark wrote:
> Mike Finley <mike.finley@... 
> <mailto:mike.finley@...>> wrote:
>
>     Its not necessarily true that fewer colours in the mix would lead
>     to less long term colour shift.  Some time ago there was a
>     suggestion that yellow in the mix reduced long term colour shift
>     (yellow fading offisetting the warming of the black inks), ...
>
>
> That was some time ago.  Current Epson, MIS and other MK and 
> non-neutralized PK inks are 100% carbon or a pigment that appears to 
> be close to it and very strong.  From what I've seen they are 
> significantly more stable than the color inks.  So, with today's 
> modern pigment (not Claria/Noritsu dye) inks, I believe less color is 
> better in terms of image stability.
>
> I used a yellow ink "counter fade" strategy with an old MIS B&W blend. 
>  It worked for a while, but it's history.  The black "pigment" inks at 
> that time had dye in them to fortify them.  The cool dye faded 
> quickly, causing the carbon warmth to show more.  So, I added a yellow 
> dye to the light grays that would fade at the same rate as the black's 
> fortifying dye and offset that dye's coolness.
>
> With modern Epson pigments, the ABW use of more than the minimum color 
> inks needed is probably done mostly for smoothness reasons (and maybe 
> to keep the jets clear, and unlikely/cynically to increase Epson's 
> profits).  With respect to the smoothing potential of the color inks, 
> I use Claria colors to significantly smooth the 1400/1430 Black Only 
> dots in my B&W QTR profile for the OEM Claria inkset.  It does the job 
> very effectively.  (see 
> http://www.paulroark.com/BW-Info/1400-Claria-BW.pdf )
>
> Paul
> www.PaulRoark.com <http://www.PaulRoark.com>
> 

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