I have had my 6510 for a couple of years and it has worked very well. However it recently produced ragged black ink printing. After several repeats of the cleaning procedure it now only prints a uniform pale grey.

Google found many people with the same problem over teh past 4 or 5 years. A few said they had found a solution, but it did not work for most others (and not for me either).

Has anyone here found a solution?