Digital BW, The Print

> 
> One more 7600 question:  Must I go through the
> changeover process in going to Matte black ink,
> or can I just switch carts and expect that after
> a few prints the new ink will have worked its way in?
> 

You need to "trick" the printer into not knowing that you are 
switching blacks. Then you run an all black purge page of about 24" 
x40" to get rid of the black in the lines.

That is what is called the "South African" method of changing blacks 
on the 7600.  All you lose is the amount of black in the black line 
and no other colors. It is actually pretty easy/not too costly or 
time consuming to switch blacks on the 7600.

Personally, I would find some use for the proofing paper and Photo 
Black ink you have. The 7600 can do good quality Photo Black prints. 
Your call though.

Best,
Michael