Digital BW, The Print

Paul Roark wrote:
<snip> 
> The MIS VM "warm" curve will give results that should look OK.  It 
holds the
> lightest (yellow position, blue curve on the 1160) ink back the 
most.  It
> then pulls it into play just enough to turn on the black jet.   
<snip>

Paul:  Your response regarding the Epson driver "turning on the black 
jet" requires a follow-up question. I may not be asking this 
correctly, so please bear with me: In general, under what 
circumstance does the driver deliver the black ink?  I understand 
your words, but I don't seem to get the subtleties.

Thanks.

Jeff Randall