I found the post from 2/14/13 & 4/1/2013 about same problem. I performed the nozzle check, head cleaning, cleaned the heads manually per the 4/13 message, printed 40 full color copies, performed head cleaning, then printed another 30 full color copies. Despite all of these attempts, it still does not print black in any of the color copies. Have tried to print a Word document but it doesn't print out in black, only a blue. Would appreciate your assistance and any suggestions you may have.