It's called the black piece.
The cartridge chip is mainly used by the printer to read the cartridge data, and if the printer can normally identify the cartridge information, the problem is not large. It is best not to use ink again, now the ink is domestic, impurities are more love to block the nozzle.
And the ink raw materials are not very good, often break the ink when printing ink, the image is not ideal, very fuzzy, the most afraid is the ink splash on the printer circuit board caused by short circuit, it is not the ink cartridge problem, your whole machine is scrapped, it is best to use the original, quality and printing effect are the best.