Reset the ink level to full for HP nos. 10/11/12/14/80/81/82/83/84/85 ink cartridges etc. All have small chips on the side of the cartridges, which prevent from being recognized by the printer once
they have refilled. Once you have resettable chips, you will also require HP chip Resetter. SSK-10880 will reset the chips back to full status an unlimited number of times.
Chip Resetter