专利名称：Ink jet printing device发明人：Raymond John Herbert申请号：US08/790799申请日：19970130公开号：US06027205A公开日：20000222
摘要：An ink jet printing device is disclosed in which a bore providing a nozzle for theejection of droplets of ink is closed by a pin to prevent ejection of ink. The pin is movableinto a retracted position in which the pin is withdrawn from the bore to permit ejection ofdroplets of ink from an ink chamber in communication with said bore. The pin is
connected to a piston movable within a chamber. A spring acts on the piston to urge thepin into the bore. Withdrawal of the pin from the bore is effected by pressure of inkacting, against the spring force, on the piston. Ink is supplied selectively under pressureto the ink chamber from an ink supply. Alternatively the piston may be moved byselective application of positive and negative gaseous pressure in the chamber.
申请人：NEOPOST LIMITED
代理机构：Shoemaker and Mattare, Ltd
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