I will try doing them again tonight. I had Canon support on the phone the other night and she could not fix it either. Had me do the roller cleaning a few times which didn't help. Since the printer is still under warranty, Canon is sending me a new o...
Did this solve your problem? I also have banding problems with my 8x10 and 11x14 prints with dark backgrounds. Exact same issue as shown in the picture above. Canon's email support was not helpful. I will try live support but I would love to know how...