The cartridges arrived promptly in early March and well-packed. They worked well for a couple of months. I started to see blue mottling whenever I printed on cardstock, but thought that it was a problem with the paper.By July I realized that the cyan had a leak, but thought that it was just temporary. I cleaned out the inside of the printer and didn't print again until late August. That's when the blue streaking covered almost half paper. I checked the supply levels to see how much had leaked compared to the other colors. That's when I saw that the black was down to 9%. Since the original HP "partial" cartridges that came with the printer lasted one and a half years, the only reason that the black would be down so much is that it is also leaking (at the side where it doesn't streak paper) but it was probably not full to start with. I never thought to check the level when I first installed them. Don't buy from 007Toner.
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