An ink refill unit is provided for refilling a printer ink cartridge unit. The ink refill unit includes a base assembly which houses internal ink refilling components and defines a plurality of outlets for docking with the cartridge unit. Each outlet corresponds to a respective type of ink with only...http://www.google.es/patents/US7556359?utm_source=gb-gplus-sharePatente US7556359 - Ink refill unit with a working outlet and other dummy outlets
Ink refill unit with a working outlet and other dummy outlets
