Digital BW, The Print

Hi
Thanks for the reply. My banding is very minor and only shows up in 
shadow areas. After comparing the same print I noticed that the BO 
print was printing a little lighter than the all ink one. Having read 
CJs article on BO printing decided to change the printer profile from 
same as source to 15% dot grain(working space was 20% dot grain) to 
darken the print. Result a perfect match for overall density and with 
the shadow area a little darker, reduced banding in this area. 
Lighter areas such as the sky show no signs of banding. So my 
question is why is there minor banding in darker areas only. This 
problem only effects certain prints - depends on content. 

The prints now look better.

Any ideas anyone.

Peter