Digital BW, The Print

Mark,

There have been reports of the  blue conponent of these Selenium Tone inksets seperating 
a bit from the other grey components. When you let these carts sit for a while it increases 
the chance of this happening. I have been warned about this and the remedy is to turn off 
your printer, remove the carts one by  one and shake them to blend all the pigments 
together. This shaking of the carts should be a regular procedure with the selenium tone 
inks and probably all pigment inksets including Ultrachrome, regardless if you notice the 
blue shift or not. If your nozzles check clear, completely clear, then this is all I can think 
of. You should do this before you do a KK2 or similar cleaning to flush the  blended inks 
into the heads and dampers.

John