You have given two different problems. Not printing...very poor quality. If the unit is not printing or has poor quality my first question to you is "have you changed the ink cartridges lately?". Typically the ink cartridges do not last long and if they weren't filled properly it could be a little as a couple of months. Low or no ink cartridges would certainly give you both problems. If you have changed the cartridges since this problem began were they one's you have had for a while (purchased but not used and sat around) or did you just purchase them and immediately install them. Many of the cartridges sold today are refilled units and many times they can have problems. If this scenario is yours I would return the cartridges and get another set to see if that was the problem. If you have already done this then your unit may need the driver reinstalled or updated. I have a tip at http://www.fixya.com/support/r6370947-install_printer_without_install_cd
which explains how to do this by downloading the most recent driver from the manufacturer.
Thanks for using FixYa and the great rating.