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How do you reset refillable ink cartridges for an HP C6280?

I have refilled the cartridges, but now it says my black ink is out and it won't print with the black anymore. It has been printing fine since I filled it (about a month ago) but it must finally sense that it should be out of ink. How do I reset it?

Public Comments

1. remove it and then put back in.
2. Solution: 1. Please, check the cartridge very well, it has expired. you need a replacement of cartridge. 2. you can refill again empty cartridge and place into pinter. 3. clean cartridge carefully, before you place into slot. try this now !!!!! Bestman