I bought these 2 packs at the end of April 2021 and installed the first cartridge in my printer in June 2021. We don't print often, mostly just shipping labels. The first cartridge worked for about a month and a half. The print quality was good, but it suddenly stopped working. The printer indicated that it was full of ink and I didn't get any error messages. I tried cleaning the cartridge but couldn't find a way to continue printing. I installed a second cartridge and it worked for about a week and a half before it just stopped working too. Due to the items I had they were outside of the return window so I don't think there is anything I can do. I wouldn't buy it again because it's just not worth the risk of the product failing without warning.
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