4/0: pronounced as "four over zero" = Full Color printing on the FRONT and blank BACK
4/1 pronounced as "four over one" = Full Color printing on the FRONT and BLACK ink only on the BACK
4/4 pronounced as "four over four" = Full Color printing on BOTH SIDES
Article ID: 20, Created: 8/10/2010 at 10:42 PM, Modified: 10/11/2012 at 6:49 PM