Digital BW, The Print

FYI :
I had not used my Epson 3000 for about 6 months other than a few 
nozzle checks to verify it was still okay....

I tried printing with it yesterday: nozzle tests okay, and the print 
was fine, well except for it being very posterized. Turns out, the 
pigment settled out of the PiezoTone Cyan and Magenta inks and they 
were nearly the density of the Yellow positon.

Pulled the carts, did a 'shipping' dump of the ink, sucked and tossed 
what was left in the carts, refilled and reinstalled. All Is Okay 
again....

InkJetMall says :
" Here's what I can tell you about the 3000 printer. Even if you have  
been running nozzle checks, the ink movement through the lines hasn't  
been displaced much, and so the ink in the lines and the print head is 
"old" ink. In a 3000 printer, unlike all newer Epson printers, when 
ink  sits unused for a long period of time, the ink in the tubes and 
print head looses density over time. The time that this takes to 
happen can be  shorter than one month. "

Best,
Alex P