This is the answer to how long any of these toner cartridges will last. This will replace the one I bought as a backup cartridge when I bought the printer myself in 2015. Only four years. Of course, I only use this printer a few times a week. But given the cost of these things, I think I'll replace the cartridges as needed - it's too expensive to fully clean them all when one comes out. But as for the term "toner cartridge," wasn't Tony Cartridge the absentee father of television's "cartridge family"?
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