| 摘要 |
An electrostatic type ink-jet printer capable of stably supplying a liquid toner and of printing characters and images without density unevenness by effectively ejecting agglomerated electrified colored particles. The electrostatic type ink-jet printer has plural jutting eject points 4, 104 made of a dielectric material orderly disposed in a plane, a liquid toner 8, 108 containing electrified colored particles P dispersed in an insulation liquid drenching surfaces of the jutting eject points, a bias electrode 13, 103 for agglomerating the electrified colored particles at the top of the jutting eject point by a Column force by a bias voltage having the same electric polarity as that of the electrified colored particles, and plural ultrasonic wave generating sections 16, 116, each provided at a base between the respective jutting eject points, for generating the ultrasonic waves travelling toward tops of the jutting eject points to separate liquid droplets containing the electrified colored particles agglomerated. Thereby, the electrified colored particles agglomerated by a bias electric field are separated by the ultrasonic wave, and characters and images are formed on the recording paper.
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