These cartridges don't work in my Canon 830 printer. I was sent generic for Canon - G&G cartridges, which don't fit correctly. I think I was sent a different generic brand some time ago that were OK. My printer won't work at all now. I get a message saying that it has the wrong printer head. I've been using this printer without problems for six years. Don't buy the G&G. Spending the money for the Canon cartridges is worth it.