公开(公告)号：US5400061A

公开(公告)日：1995-03-21

申请号：US863115

申请日：1992-04-03

申请人： Hideaki Horio ,  Masaharu Ooyama ,  Mitsuhide Matsuda ,  Masaya Iwasaki

发明人： Hideaki Horio ,  Masaharu Ooyama ,  Mitsuhide Matsuda ,  Masaya Iwasaki

IPC分类号： B41J2/05 ,  B41J2/14 ,  B41J2/06

CPC分类号： B41J2/14 ,  B41J2002/14387 ,  B41J2202/04

摘要： An improved ink-jet printer of the so-called current flow type wherein a current is passed through a conductive ink contained between a pair of electrodes so as to cause the ink to become vaporized and cause trapped gasses or bubbles to expand suddenly, exerting a sufficient pressure upon the ink to force a droplet of ink from a nozzle is disclosed, wherein at least one projection of electrically insulating material is disposed between the pair of electrode for increasing the density of the current at a position directly below a nozzle. With the projection thus provided, only a limited portion of the conductive ink participates in the generation of heat, and boiling of the conductive ink takes place only at the position directly below the nozzle. Accordingly, droplets of conductive ink are produced with minimum power consumption and can be ejected in a uniform direction. The position where boiling of the conductive ink takes place is remote from the electrodes, so that the electrodes are substantially free from cavitation and thermal shock and, hence, they have a long life span.

摘要翻译： 一种改进的所谓电流流动型喷墨打印机，其中电流通过一对电极之间的导电油墨，以使油墨变得汽化，并使截留的气体或气泡突然膨胀，从而施加 公开了对油墨施加足够的压力以从喷嘴强制墨滴，其中电绝缘材料的至少一个突起设置在该对电极之间，以增加在喷嘴正下方的位置处的电流密度。 利用如此提供的突起，只有导电油墨的有限部分参与产生热量，并且导电油墨的沸腾仅在喷嘴正下方的位置发生。 因此，以最小的功率消耗产生导电油墨的液滴，并且可以沿均匀的方向喷射。 发生导电油墨沸腾的位置远离电极，使得电极基本上没有空化和热冲击，因此它们具有长的寿命。