I've not printed in about a week or so, and when I tried to print some stuff yesterday, the quality of the black was really bad. The black output is usually very sharp on the best quality settings - but it has decreased sharply (no pun intended).
Example
I have tried using normal and deep cleaning modes on the printer's panel but the quality still remained fairly dire. I changed the black ink cartridge with a fresh one today and tried printing but still got the same results.
Any ideas?