Digital BW, The Print

Sanders,

>I gather the "Sepia toner" cartridge that gets installed in the 
>Y position does not get called for printing the range of warm 
>tones permitted by the Epson driver sliders. 

The sepia toner, as well as all the other inks, are used when the Epson
driver sliders are used to make a UT7 print.  That is why you can shift the
tone range cooler by substituting in a second light warm gray (UT7 LC).  

>Certainly, I will never print warmer than the UT-EZ 
>carbon/warm inkset for the C86 printers.

Then put UT7 LC in the Y position.

>If this is true, is there any reason not to leave my current 
>UC Y cartridge installed in my 7600? 

You don't want the UC color inks in there.  

The UT7 with the UT7 LC in the Y position is what neutral printers should do
for the best prints.  You don't want an ink that is not regularly used.  The
carbon UT7-LC is the most lightfast ink you can put in that spot, and it
will help the sliders and curves produce the best prints possible.   If I
did not want to do sepia and wanted to print with the Epson driver, I would
put the UT7 LC in the Y spot (as well as the LC spot).  (Use the Y chip for
the Y position.)

Paul
www.PaulRoark.com