My father-in-law gave me a set of chipped cartridges from his Canon printer. He is the kind of customer that Canon is looking for. I told him I could refill them for him but he was absolutely not interested when I mentioned the warranty issues. He just went and bought a complete new set of cartridges, and did not complain that much about the price. This from a man who I have seen tear a paper towel in half, to save a half a paper towel, when using it for a napkin. He ended up with this printer because I told him to "buy a Canon ip3000" because I could refill the cartridges for him. The ip3000 was no longer available at the store he went to and he came home with a new chipped Canon printer which up to that point I knew nothing about.
Anyway I took these chipped cartridges he gave me and refilled them and snapped them into my ip3000 and they are working perfectly. Had to trim a little on the snap tab on the big black cart. The little black cart, of course, has no use on the ip3000.
Oh, and he told me that Staples told him that they would give him $3 credit for each cartridge he turned in. I wonder what they do with them?