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Re: UT2 Pigment Settling - Paul

2006-08-14 by Bob Marsolais

Paul,

Thanks for your help.
>
> The original UT2 yellow-position sepia ink did use magenta, and it 
> would, indeed, settle.  To eliminate that we started to use the
> R800 red, which appeared to be better.  However, I'm still
> suspicious that in the blended ink it could settle.

I purchased my UT2 inks almost 2 years ago and they are obviously 
the original formula.

> Do you use carts or a CFS?  Usually in carts that are installed
> the printing agitates the carts continuously, such that settling
> is not a problem.  Where I usually see the problem is in the
> lines of large format printers and CFSs, and in bottles or carts
> that are left on the shelf unagitated for a long time.  All
> pigments eventually settle.  They are all heavier than the base
> they are suspended in.
 
I use the spongeless cartridgess.  However, the cartridges were used 
very little for about a year.  During that time I made it a point to 
print something at least once a week, but not much got printed.  
Most of the time there were probably color cartridges in the 
printer. That's probably when the ink started settling and I just 
noticed it.  Because the bottles have been shaken, they have not 
settled.

By the way, I just finished scanning and editing one of the images 
from this year's Golden Trout camp.  It is a definate keeper.  I'm 
trying to find the best way to share it on the web and I'll post it.
TMAX-100 developed in 1:1 XTOL and scanned at 3200 DPI gave a 
surprizingly sharp 13x19 print from Windy Gap!

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