Abstract: Device for the refilling of a print head of an ink jet printer outside of the ink jet printer, with a holder, into which the print head can be inserted, wherein the print head includes an ink supply chamber, which is in fluid communication with the emission opening of a nozzle plate and which is vented through a ventilation opening, withan ink tank, which by means of a conduit and a coupling piece is capable of forming a fluid connection with a fluid tight sealing engagement with the ventilation opening,a receptacle container, which via a conduit and a coupling piece is sealingly engageable with the nozzle plate for establishing a fluid communication with a fluid tight seal,a pump with a reversible conveyancing direction, which is provided between the ink tank and the ventilation opening,control electronics, which works upon the pump in such a manner, that the ink is conveyed from the ink tank to the ink supply chamber so long, until the desired fill condition is achieved and subsequently the supply direction