Patent ID: 7901062
Filing Date: 2011-03-08
Classification: B41J

Abstract:
1. A refill unit for refilling an ink storage compartment that supplies ink to a printhead assembly, the ink storage compartment having an ink interface for receiving the refill unit, the refill unit comprising: a body containing a quantity of ink; an inlet valve actuator for opening an inlet valve of the ink storage compartment when the refill unit is docked therewith; an outlet valve actuator for closing an outlet valve of the ink storage compartment when the refill unit is docked therewith; and a constrictor actuator adapted to be received into an aperture of the ink storage compartment when the refill unit is docked therewith, the constrictor actuator operable to engage a bag constrictor of the ink storage compartment through the aperture to cause a volume of the bag to be decreased, wherein the refill unit comprises a plurality of constrictor actuators.