Your printer too?
My HP printer quit working right the same week my office computer quit working.
I cleaned everything I could find, and still nothing worked. So I took back the twin pack of black ink that was still in the plastic; got my refund and bought a new HP printer. HP 8600 Officejet Plus.
I hope you can get your's working. I did find a nice video on the HP support web site that showed step by step how to clean them.