MULTI-FLUID ELECTROSTATIC INK EMITTER
Original Publication Date: 1976-Dec-31
Included in the Prior Art Database: 2004-Mar-27
Xerox Disclosure Journal
The figure shows a high-frequency fluid transducer in use in non-impact printing technology. The device consists of a chamber 1 containing two immiscible fluids 2 and 3, an electrode 4 for charging fluid 2 and an orifice 5, The dielectric strength of fluid 2 should be less than that of fluid 3. Fluid 2 serves as the driving member similar in function to that of a piezoelectric crystal. Upon applica- tion of a voltage synchronous with that of a picture signal, fluid 2 will be displaced toward electrode 4 intermittently in accordance with the signal. The displacement forms a pressure variance in fluid 3 which results in the emission of droplets from orifice 5. If fluid 3 is ink, the device can be used to generate a dot pattern on paper.