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    • 2. 发明授权
    • Ink-jet printer using RF tone burst drive signal
    • 喷墨打印机采用RF音色突发驱动信号
    • US5912679A
    • 1999-06-15
    • US603599
    • 1996-02-21
    • Satoshi TakayamaNoriko KudoShiroh SaitohMamoru IzumiChiaki Tanuma
    • Satoshi TakayamaNoriko KudoShiroh SaitohMamoru IzumiChiaki Tanuma
    • B41J2/14B41J29/38B41J2/045B41J2/135B41J2/205
    • B41J2/14008B41J2002/14322
    • A driving circuit controls a time for applying a drive signal to a piezoelectric element so as to bring a control in the number of ink droplets squirted from a liquid surface of liquid ink according to a gray scale level of an image to be printed on a printed object. According to application of the drive signal, acoustic waves emitted from a piezoelectric element array are focused in a main scanning direction, made incident to an acoustic lens via an acoustic matching layer, further focused in a direction orthogonal to the main scanning direction and focused in a vicinity of the liquid surface in a point form. In the vicinity of the liquid surface, an ink liquid mound is formed by means of pressure (discharging pressure) generated by the focused acoustic waves and then from a tip of the ink liquid mound an ink droplet according to the application time is squirted. The squirted ink droplet is ejected and stuck to the printed object. By performing main and subscanning to the printed object, a two-dimensional image is printed thereon.
    • 驱动电路控制将驱动信号施加到压电元件的时间,以便根据待印刷的图像的灰度级别对液体墨水的液面喷射的墨滴数量进行控制 目的。 根据驱动信号的应用,从压电元件阵列发出的声波在主扫描方向上聚焦,通过声匹配层入射到声透镜,进一步在与主扫描方向正交的方向上聚焦并聚焦在 以点形式的液面附近。 在液体表面附近,通过聚焦声波产生的压力(排出压力)形成油墨液体堆,然后从油墨液体的顶部喷射根据施加时间的墨滴。 喷射的墨滴被喷射并粘贴到印刷对象上。 通过对打印对象执行主和副扫描,在其上打印二维图像。