| 摘要 |
A printer equipped with a print head that can be operated at a lower voltage or at a higher speed is offered. The print head permits reduction in size of the power supply or increase in the print speed. The printer can maintain high-quality output printing free from thinned portions. During intervals, paper is fed, and charge supply pulses are applied to all print electrodes to give a uniform potential difference between each of the print electrodes and the counter electrode. In this way, electric charge is previously supplied to the ink meniscus. Consequently, a sufficient Coulomb force to permit ink droplets to be squirted is obtained. Therefore, during operation, the supplied energy can be suppressed. Under every circumstance, the electric charge on the ink surface can be retained. Hence, ink droplets can be squirted stably without nonuniformities.
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