Cannon MX870 Printer - Won't print when small black ink is empty even though there is plenty of ink in the larger black cart. Tags: Canon Components Printers Last response: July 15, 2013 11:23 AM in Components Share rockcarter July 15, 2013 9:57:10 AM canon mx870 problem with second black ink cartridges. The large ink is full and the small is empty but it will not print. More about : cannon mx870 printer print small black ink empty plenty ink larger black cart rgd1101 July 15, 2013 11:23:18 AM are you printing in color? that why. Can't find your answer ? Ask ! Publish Related resources : ForumHP Photosmart C7180 printer leaks ink and won't print black. ForumPrinter won't print black ink More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !