Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@y..., "Paul Roark" 
<paul.roark@v...> wrote:
> I'm sure the image is subject to differing interpretations.  My view 
is that
> the blue-green fringe around the Piezo spot may be caused by 
dissolved dyes
> in that inkset spreading further through the Kleenex than the 
pigment
> particles.  However, I'm no chemist.
> 
> Paul
> http://www.PaulRoark.com

1. It wouldn't have to be dissolved dyes (although that is more 
likely).  Finer particulates (pigments) would also be able to travel 
farther in your "chromatography" substrate and would exhibit the same 
effect.  Are there two different carbon particulates in the ink with a 
different dye coating?  This is nit picking I guess... the result is 
the same whether it's solid substrate or dye.

2. The liquid carrier could contain a black dye that is reacting with 
the Kleenex and turning green.  Is it possible for this experiment to 
be repeated on a more relevant substrate like the actual print paper?

3. Is the paper porosity of paper used by those reporting the problem 
able to be correlated at all?  Have people changed paper batches?  (I 
know people have reported that their ink batch hasn't changed.)

Mike Dawson