Patent ID: 7703898
Filing Date: 2010-04-27
Classification: B41J

Abstract:
1. An ink jet device which comprises: an ink reservoir and a jetting assembly having at least one printing nozzle, the jetting assembly being connected to the ink reservoir for receiving liquid ink from the ink reservoir, an ink supply line for supplying ink to the ink reservoir, said ink supply line comprising a valve for blocking a connection of the ink supply line to the ink reservoir, said valve being arranged at a lower end of the ink supply line, the ink supply line and the ink reservoir being arranged to allow liquid ink to flow through the valve into the ink reservoir in accordance with and supported by gravity acting on the ink, and a purging device adapted to apply a purging pressure to an inner space of the ink reservoir for pressing ink into the at least one printing nozzle, wherein the valve is arranged below a nominal minimal fill level (L) of the ink reservoir, said valve being a passive one-way valve that is adapted to block the connection of the ink supply line to the ink reservoir when a pressure within the ink reservoir reaches a predetermined value.