Digital BW, The Print

I just want to throw something in that you may want to test along with 
what you are doing already.  I ran into this while doing a test book.  
In their case they had a "convrt to B&W option--less than perfect.

What I do--even with ABW, etc.--is open a copy of a file and do a 
convert myself.  This helps in a couple of ways.  First of all, a 
generic PS convert to B&W assumes a lot by the software.  Other folks 
simply do a full desaturate but leave it in RGB--also not great IMHO.

I use Adjustments> Black and White.  Couple of options here.  First I go 
through the old school (I am) and see what the green, orange or yellow 
filters do in the options box.  I usually wind up adjusting the color 
filters further, controlling sky, vegetation, etc. where I get both the 
detail and densities I prefer in each are.  Think Zone System; think 
WWAAD--what would Ansel Adams do?

After that, the RGB information is still there.  NOW I convert to B&W 
using >Mode.  I know it seems redundant, but it removes the possibility 
of any tints being left behind.  (Some others' books where printing B&W 
with slight green or magenta tints.  Mine had none perceptible, though 
the iOne Pro can always find something.

Now when I throw this to ABW, or whatever, I am dealing with pure Ks.

I know ABW is throwing some color pigment in there though.  With yellow 
being the weak link, I normally drag "southwest" about -11 to -19 to 
force the ink to the more stable Cyan side.  It doesn't seem to affect 
the B&W print appearance.

Just a thought.

Seth