| 摘要 |
PURPOSE:To form stable ink particles and to obtain a printer head of almost permanent durability by electrostatically displacing and releasing a movable piece put in ink. CONSTITUTION:When control parts 9a and 9b apply a voltage between electrodes, a movable part 9b is bent by Coulomb's force or electrostatic force. At this time, electric charges abruptly accumulated between the electrodes are discharged to release movable parts 5a and 5b, which oscillate to be displaced toward nozzles 7a and 7b at a speed related to a natural oscillation frequency. Owing to this force, a part of an ink 10 jets out in the direction of an arrow as ink particles 8a and 8b from the nozzles 7a and 7b. Since only the electrostatic force is applied between the fixed electrodes which are controlled independently and electrostatically in such a way, production is facilitated, and high printing quality can be obtained because of almost permanent and stable dot formation. |
