Patent ID: 7448735

Claim:
An ink priming arrangement for an inkjet printhead, the inkjet printhead having a plurality of ink ejection nozzles, the priming arrangement comprising: an ink bag containing ink for distribution to the nozzles via a fluid path between the ink bag and the nozzles; a force applicator arranged to apply inwardly directed force on at least one exterior wall of the ink bag so as to reduce an available fluid volume of the ink bag, thereby causing ink to flow from the ink bag to the nozzles along the fluid path; and a biasing member arranged in the ink bag to apply outwardly directed force on at least one interior wall of the ink bag so as to restrain the reduction of available fluid volume of the ink bag, wherein the biasing member is configured so as to apply the outwardly directed force only once the available fluid volume of the ink bag has been reduced to a predetermined volume, and the fluid path connects the ink bag to at least 6400 nozzles of the printhead.