A:AnswerAccording to the manufacture's website if prints approximately 200 pages, but the amount of pages it can print is going to depend on what you print and how much is on each page.
A:AnswerHP ink cartridges should not be refilled. Refilled ink cartridges can leak in the printer requiring service that will not be covered under warranty. In addition, the print quality will suffer with refilled ink cartridges because the nozzles become clogged with this additional use. HP does not manufacture or support refillable ink cartridges. I apologize for any inconvenience this may cause.
A:Answeron the side of the box, it references all the HP Printers that it will work with. It reads HP Office Jet, 4540, 4550, 4580, 4680, 4500.
HP Office Jet Pro 6978 is not listed. I would use the ink recommended by your printer.
