A:
Hewlett-Packard does not sell, manufacture, or support refillable ink cartridges. For this and other reasons, HP ink cartridges should not be refilled:
Refilled ink cartridges might leak and cause product damage. One method for refilling ink cartridges is to drill a hole through the cartridge, refill the ink, and then plug it. In some cases, this plug does not hold, and the ink runs into the product and damages the printed circuit boards.
Refilled ink cartridges frequently exhibit spotty printing or fail to print. This problem might be a direct result of the nozzles being plugged with dried ink. Because the vents of the refilled cartridges have been opened, air is able to enter the cartridge and dry the ink.
Refilled ink cartridges might exhibit lower print quality, for the following reasons.
Printing algorithms used to create the various colors are based on HP inks. Using incompatible inks might result in color matching problems.
Refilled cartridges might have damaged nozzle orifices, result in various problems with print quality.
Hewlett-Packard products use a time delay between pages to accommodate the properties of the specific media type and ink being used. This prevents smearing problems from one page to the next. Using incompatible ink will alter the effects of this time delay and might result in poor print quality.
Hewlett-Packard products might not recognize refilled ink cartridges. The refilling process may involve altering the ink cartridge enough that the product is unable to recognize it. The condition of the print cartridge electrical contacts deteriorates with use. This also results in the product being unable to recognize the refilled cartridge.
Refilled ink cartridges might get stuck in the product. Because the cartridges from other manufacturers have been altered, cartridges might become stuck in the product. This problem might require that the product be disassembled to remove the cartridge.
Hewlett-Packard cannot predict the long-term effects on product reliability from using different ink formulations.