High volume ink tank printers can produce over 10,000 pages in black and white and again over 10,000 pages in colour. Typically these ink tanks can churn out up 6000 to 7000 pages from a single refill. When the refillable ink tanks are low, simply refilled it with supplied ink from convenient bottles. The complete inkjet printer with ink feed system allow consumers to produce huge amounts of prints without the need to replace the cartridges. Now it seems the original equipment manufacturers are making these legit. The external ink tank system is not something new, third party manufacturers have been modifying original equipment inkjet printers to use their ink tank system and selling this on to the consumers.
The manufacturers themselves are entering the market created by third parties, duplicating the entire process created by them from refill bottles to external ink tank systems, reservoirs that feed ink to the print head and capable of holding large quantities of ink.