G - Physics – 01 – D
Patent
G - Physics
01
D
101/96.0217
G01D 15/18 (2006.01) B41J 2/14 (2006.01)
Patent
CA 1133043
COINCIDENCE GATE INK JET WITH INCREASED OPERATING PRESSURE WINDOW ABSTRACT OF DISCLOSURE In a coincidence vector gate ink jet, a droplet is expressed from an outlet orifice by a coincident pressure produced by a pair of transducers at an outlet orifice. In this type of ink jet, it is normal for one of a cooperating pair of transducers to be activated in a non-coincident mode. In the non-coincident mode, a droplet is not expressed from an outlet orifice as long as the pressure produced by the one transducer remains below a given threshold. A pressure absorbing chamber is provided, which permits this threshold pressure to be substantially increased to a level substantially above the minimum coincident pressure produced by the pair of transducers to express a droplet from the orifice. This increase in the threshold pressure is an increase in the operating window. A greater operating window permits greater latitudes in manufac- turing variation and permits greater latitudes in pressure variation to change the size of a droplet to effect halftoning.
338603
Fischbeck Kenneth H.
Harpavat Ganesh L.
Sim & Mcburney
Xerox Corporation
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