epson dx4800, wont print?

I have had this printer for a number of years and it has served me well, unfortunately in my final year at university it ceased to print i have continued to clean printer heads, nozzles and reallignment check, still no ink on the page. the printer seems to go through the motions of printing and the ink does go down but nothing shows on the page. I no longer know what to do with it, please help me.

clare
June 2010