Most of the users report this “why is my Epson printer not printing black ink?” every day. It could be that your ink cartridges are not working correctly. You need to check the volume of the ink available in different ink cartridges. To check that, you need first to open up the printer and remove the ink cartridges. Check if any ink cartridges are empty or about to end, then fill them up or replace them with new ink cartridges.