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And, these work! I use good paper, and I dont get paper jams. The toner comes with a new fuser as part of the cartridge so each new cartridge starts you off with crisp clean text, and I get about 2000-3000 sheets at home per cartridge. They always fit perfectly. When the printer says its low, I take the cartridge out and shake it sideways, and then I get a another week or two before I notice any streaking and I repeat this for a few weeks, until it just wont give me more good results. Not hard to do when I have only a few of us using it (probably not easy to do in an office situation if many people are printing to it).