Digital BW, The Print

Tom,

> How about UT2 and UT7 ink?  With the exception that
> UT2 is for the 1280 any other differences?

The UT2 and UT7 inksets are close but not identical siblings.

The differences were largely dictated by the differences between a driver
designed for dye inks (1280) and one designed for pigment inks (2200).

In particular, the cyan and magenta channels are switched.  The cool ink is
in the UT-2 (1280) C & LC positions, but in the UT7 (2200 and other UC
printers) M & LM positions.  This made for more even printing and a toner
that is lower in gamut than the Ut2 toner.  How low I can get the gamut of
the toners affects the smoothness of the prints by reducing the color
contrast between the dots.  (The next generation will have even lower gamut
-- and no sepia in the default arrangement.)

Paul
www.PaulRoark.com 




> 
> --- Paul Roark <paul.roark@...> wrote:
> 
> 
> ---------------------------------
> Tom,
> 
> >
> > What's the difference between the UT and UT7 inks
> for a 2200?
> 
> The UT for the 2200 was an inkset MIS made for Bowhaus
> and the IJC rip.  It
> will not run well with the Epson driver.
> 
> The UT7 inkset is for the Epson driver or a rip.  It
> does not usually have a
> PK, using the 2 dark grays to generate the black.
> 
> >  Here's
> > what I see.  UT7 uses 7 inks and UT uses just 6 with
> a choice between
> > Eboni and Photo Black making the 7th ink?  UT7 uses
> black, 3 grays and
> > 2 cool toners where UT has only one cool toner.  UT
> can be used with
> > QTR but not the Roark curves where UT7 can be used
> with both.  Is that
> > right?  Are the characteristics of the inks
> different?
> 
> I think that is an accurate summary.  The basic ink
> characteristics should
> be the same.  (If there is old stock of one of them,
> it could have the old
> base as opposed to the new base.)
> 
> Paul
> www.PaulRoark.com
> 
> 
> 
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