The reason, why can person the printer ink contents self ?

Although there are level indicator for ink contents capacity in cartridge, but that only estimate that given computer. Surely we still not yet can determine to how much sheet again ink contents that still can be used.

A moment printing requirement on the day time we may not more disappointed when fresh out of ink, because can be going to ink fill service, however if you need at night (midnight) there is no store that open.

Well moment like here's our ability in refill printer ink self need so much. Cause we enough to prepare reserve ink in the bottle only. So anywhen the ink is fresh out, we are direct can fill self without play around with delaying work (“remember time is money”).

Apart from reason also there moment when we exploit ink refill service, we don't know is ink packed into by cartridge as according to maximal capacity from cartridge itself. If not appropriate, would increasingly adds expensive of ink refill. However if we can fill the ink self, so how much the many the ink can be filling, that is cost we pay.