Be advised that I thought I would be clever when my Canon iP4700 print head packed up. It was either buy another head or, for the same price a new Canon iP4900 printer. Although my old printer was little worn otherwise, I purchased a new printer. But then I discovered that my refillable cartridges wouldn't work so I had to buy another set which set m back another £15 or so and then decided that I had better stock up on more ink so that cost me another 20 odd quid. Still with this system a cartridge refill costs me about 50p so I have saved a fortune over the years so I can't really complain - but I still should have bought a new head!
P.P.