Some time ago, on default print quality settngs, the black would go faint/incomplete on the last few lines of a page. If there were more pages, each would start fine but have poor quality towards the bottom. I changed quality setting from standard to high and the problem seemed fixed. The last few days the poor quality near page bottoms returned. Now the black will not print at all, even after a fresh cartridge and head cleaning. Colors print OK. Do I need to replace the print head?
