HP 970CXI REFILL INSTRUCTION
Cartridges for the HP 970CXI printer can be refilled in two very distinct methods. Refill the bladder of the black printer ink cartridge and the sponge of the colored cartridge in the HP 970CXI printer with help from an employee of an ink-filling station in this free video on HP printer ink cartridges. Expert: Taylor Bio: Taylor has five years experience re-filling ink cartridges at an ink filling station.
Source: printerscats.com