Digital BW, The Print

>>I have saved inks from my expended B9180 cartridges to use as  
spotting colors but oddly, they dry on matte papers with a surface  
sheen that is different from the same inks applied to the paper via  
the printer.

Chances are that the ink you are spotting on is being applied more  
heavily, and exceeding the paper's ink limit, so that ink stands on  
top of the paper, causing this visibly different sheen. Unless you  
have some way of airbrushing the ink on, through a mask, to the spot  
in need, then I can't see any way you would be able to apply it thinly  
enough.

Another situation is popped coatings, where the speck does not have  
the surface coating layer, so even of it were printed on an inkjet, it  
would look different than the surrounding surface. This is more common  
on older paper formulations, with chalky coatings, rather than newer,  
more elastic coatings.

C. D. Tobie
Global Product Technology Mngr.
Digital Imaging & Home Theater
Datacolor.com
CDTobie@...

On Feb 3, 2010, at 11:13 PM, David Kachel <david@...> wrote:

> I have saved inks from my expended B9180 cartridges to use as  
> spotting colors but oddly, they dry on matte papers with a surface  
> sheen that is different from the same inks applied to the paper via  
> the printer.


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