| 摘要 |
PURPOSE:To permit the injection of liquid drops surely and efficiently under a comparatively low voltage by a method wherein rotary field, generated by rotary pulse, is applied on charged liquid in a reservoir to make the liquid to flow accompanying the electrophoresis of charged particles in the liquid. CONSTITUTION:Ink is supplied from an inflow port 4 into a reservoir 5 and a nozzle 6 at all times through a capillary phenomenon to inject the liquid drops of the ink. A negative DC voltage is impressed on an electrode 7 and counter electrodes 10 are grounded while three-phase rotary pulse having a predetermined phase difference is impressed on respective electrodes 8a-8c from respective terminals 9a-9c. Then, positively charged particles in the ink are moved from the electrode 8a, on which the pulse of advanced phase is impressed, to respective electrodes 8b, 8c, on which the pulse of delayed phase is impressed, through electrophoresis. In this case, the ink in the reservoir 5 is transferred to the direction of the nozzle 6 by the impression of the pulse and the ink is injected through the nozzle 5 in liquid drops. |
