| 摘要 |
An ink jet printer and method of use of an ink jet printer incorporating the present invention is a continuous stream printer using pressure to eject ink from a capillary along a predetermined path. A piezo-electric crystal applies cyclical lateral vibration to the ejection end of the capillary to aid in obtaining greater control over the actual position of the droplet formation point and the time of droplet formation. A charging tunnel, positioned along the path and encompassing the point at which the stream breaks up into droplets, selectively charges the droplets. A deflection unit positioned further downstream deflects droplets having a particular charge, while permitting other droplets to pass to a recording medium. The invention further includes apparatus for maintaining a synchronism and phase relationship between the voltage applied to the charging tunnel and the cyclical vibrations of the piezo-electric vibrator. This permits the charging of a single droplet. This cooperation with the droplet formation point control provided by the vibrator, thus provides accurate control of the amount of ink deposited in a particular area of the recording surface and the placement of droplets on the recording surface. |
