Ink droplet expelling apparatus
    1.
    发明授权
    Ink droplet expelling apparatus 失效
    墨滴排出装置

    公开(公告)号:US4672398A

    公开(公告)日:1987-06-09

    申请号:US793241

    申请日:1985-10-31

    摘要: Disclosed is an ink droplet expelling apparatus for expelling an ink droplet in response to an electric signal, compising a printing head provided with one or more ink chambers, electro-mechanical transducers disposed on the printing head corresponding to the ink chambers, and a driving signal generating circuit for producing electric signals for driving the electro-mechanical transducers. The elector-mechanical transducers are distorted by three different driving signals to reduce the volumes of the ink chambers to raise the pressure therein to thereby expel an ink droplet out of a nozzle formed at the front end of the head. The three driving signals are applied to the electro-mechanical transducers in a predetermined order, the first one giving the ink a velocity, the second one accelerating the ink to expel it in the form of an ink droplet out of the nozzle, the third one acting to suppress the pressure fluctuation in the ink chambers caused by the first and second driving signals as well as to supplement ink in the ink chambers from an ink tank.

    摘要翻译: 公开了一种用于响应于电信号排出墨滴的墨滴排出装置,组合设置有一个或多个墨室的打印头,设置在与墨室对应的打印头上的机电换能器,以及驱动信号 用于产生用于驱动机电换能器的电信号的发生电路。 机电换能器被三种不同的驱动信号扭曲,以减小油墨室的体积,以便在其中提高压力,从而将墨滴从形成在头部前端的喷嘴排出。 三个驱动信号以预定的顺序施加到机电换能器,第一个驱动信号以给定墨的速度施加到机电换能器,第二个驱动信号加速油墨以墨滴的形式将其排出喷嘴,第三个驱动信号 用于抑制由第一和第二驱动信号引起的墨室中的压力波动,以及从墨罐补充墨室中的墨。

    Liquid droplet projection apparatus
    2.
    发明授权
    Liquid droplet projection apparatus 失效
    液滴投影装置

    公开(公告)号:US4393388A

    公开(公告)日:1983-07-12

    申请号:US242185

    申请日:1981-03-10

    CPC分类号: B41J2/12

    摘要: A liquid droplet projection apparatus is disclosed which comprises a nozzle arranged at a liquid droplet ejection head, a liquid droplet supply tank, and an electro-mechanical transducer section interposed on the head between the nozzle and the tank. The volume of the electro-mechanical converter means changes in volume in response to an electrical signal pulse applied thereto to cause the nozzle to eject liquid droplets in accordance with the electrical signal. When the pattern of the electrical signal applied to the electromechanical transducer section has an interruption period longer than a predetermined width and three or more successive electrical signals following the interruption period, the amplitude and/or width of the second one of the successive electrical signals is enlarged as compared with the amplitude and/or width of the other electrical signals, thus preventing the diameter of the second liquid droplet ejected following the interruption from being reduced.

    摘要翻译: 公开了一种液滴投影装置,其包括布置在液滴喷射头处的喷嘴,液滴供应罐和插在喷嘴和罐之间的头部上的机电换能器部分。 机电转换器的体积响应于施加到其上的电信号脉冲而改变体积,以使喷嘴根据电信号喷出液滴。 当施加到机电换能器部分的电信号的模式具有比预定宽度更长的中断周期和在中断周期之后的三个或更多个连续电信号时,连续电信号中的第二个的幅度和/或宽度是 与其他电信号的幅度和/或宽度相比放大,从而防止在中断之后喷射的第二液滴的直径减小。

    Ink jet printing apparatus
    3.
    发明授权
    Ink jet printing apparatus 失效
    喷墨打印设备

    公开(公告)号:US4424520A

    公开(公告)日:1984-01-03

    申请号:US311887

    申请日:1981-10-15

    IPC分类号: B41J2/045 B41J2/055 G01D15/18

    摘要: An ink jet printing apparatus comprises a nozzle head including, orifices for ejecting ink particles, pressure chambers each having a piezoelectric element for applying a pressure wave to ink in the chamber and each communicating with corresponding one of the orifices and an ink chamber communicating with the pressure chambers, and electrical signal applying device for applying an electrical signal to selected one or ones of the piezoelectric elements to produce the pressure waves. The electrical signal applying device applies a main electrical signal pulse to the selected one or ones of the piezoelectric elements for inducing rises of the pressure waves and applies a sub-electrical signal pulse for suppressing the pulsations of the pressure waves a predetermined time interval after the main electrical signal.

    摘要翻译: 一种喷墨打印设备,包括喷嘴头,喷嘴头包括用于喷射墨颗粒的喷嘴,各压力室具有压力元件,用于向腔室中的油墨施加压力波,并且每个与对应的一个孔口连通, 压力室和电信号施加装置,用于将电信号施加到选定的一个或多个压电元件以产生压力波。 电信号施加装置对所选择的一个或多个压电元件施加主电信号脉冲,用于引起压力波的上升,并在预定的时间间隔之后施加用于抑制压力波的脉动的副电信号脉冲 主电信号。

    Ink-jet printing apparatus
    5.
    发明授权
    Ink-jet printing apparatus 失效
    喷墨打印设备

    公开(公告)号:US4350989A

    公开(公告)日:1982-09-21

    申请号:US130188

    申请日:1980-03-13

    摘要: An ink-jet printing apparatus having a plurality of nozzles for projecting ink droplets which are selectively deposited on a printing medium in accordance with an information signal so as to form a printed pattern, such ink-jet printing apparatus comprising means for causing ink droplets used for printing to project from each nozzle in accordance with an information signal, a common power source for supplying a desired voltage to the ink-drop forming means provided at each nozzle thereby operating them, and switching means connected between the ink-drop forming means and the common power source and controlled by the information signal, the output of the power source being selectively supplied through the switching means to the ink-drop forming means, so that the driving system for driving the ink-drop forming means and the control system therefor can be separately provided, thus enabling a number of nozzles to be effectively controlled by a lowest control voltage.

    摘要翻译: 一种喷墨打印设备,具有多个用于突出墨滴的喷嘴,该墨滴根据信息信号选择性地沉积在打印介质上以形成印刷图案,这种喷墨打印设备包括用于使墨水滴使用的装置 用于根据信息信号从每个喷嘴进行打印,用于向设置在每个喷嘴处的操作它们的墨滴形成装置提供期望电压的公共电源;以及连接在墨滴形成装置和 公共电源并由信息信号控制,电源的输出通过开关装置选择性地供应到墨滴形成装置,使得用于驱动墨滴形成装置的驱动系统及其控制系统 可以单独提供,从而能够通过最低的控制电压有效地控制多个喷嘴。

    Character and figure transferring system
    7.
    发明授权
    Character and figure transferring system 失效
    字符和图形传输系统

    公开(公告)号:US5539868A

    公开(公告)日:1996-07-23

    申请号:US539725

    申请日:1995-10-05

    CPC分类号: G06T11/203

    摘要: A character and pattern transformation processing system comprises a display unit for displaying characters or patterns according to a pattern data in dot form, a device for transforming an outline data in vector form into a pattern data in dot form, a device for designating characters or patterns to be transformed in accordance with an external instruction, a device for setting a transformation region containing an object of transformation, a device for designating a transformed shape, and a device for subjecting an outline data of characters or patterns to be transformed to a transformational operation. An outline data of characters or patterns subjected to a transformational operation is transformed into a pattern data by the transformer and displayed on the display unit.

    摘要翻译: 字符和图案变换处理系统包括用于根据点形式的图案数据显示字符或图案的显示单元,用于将矢量形式的轮廓数据变换为点形式的图案数据的装置,用于指定字符或图案的装置 根据外部指令进行变换的装置,用于设定包含变形对象的变换区域的装置,用于指定变形形状的装置,以及将字符或图案的轮廓数据变换为变换动作的装置 。 经过变换操作的字符或图案的轮廓数据由变压器变换为图案数据,并显示在显示单元上。

    Semiconductor strain gauge with temperature compensator
    8.
    发明授权
    Semiconductor strain gauge with temperature compensator 失效
    带温度补偿器的半导体应变片

    公开(公告)号:US4173148A

    公开(公告)日:1979-11-06

    申请号:US948778

    申请日:1978-10-05

    摘要: A bridge circuit with four arms including semiconductor strain gauge elements has input terminals for coupling a DC power supply with a pair of diagonally opposite junctions of the bridge circuit per se and output terminals coupled with a pair of remaining diagonally opposite junctions. Initial zero-point temperature compensators each are connected in series and in parallel to each of semiconductor strain gauge elements on adjacent two arms of the bridge circuit. Temperature compensators for zero-point shift adjustment are each provided between the adjacent arms closer to each output terminal. A temperature compensator for span adjustment is provided between one of the input terminals and the DC power source. A constant current control unit for feeding a constant current to the bridge circuit is provided between the other input terminal and the DC power supply.

    摘要翻译: 具有包括半导体应变计元件的四个臂的桥接电路具有用于将直流电源与桥接电路本身的一对斜对置接头连接的输入端子以及与一对剩余的对角线相对的接合部连接的输出端子。 初始零点温度补偿器各自与桥式电路的相邻两个臂上的每个半导体应变计元件串联并联。 用于零点移位调整的温度补偿器分别设置在靠近每个输出端子的相邻臂之间。 在一个输入端子和直流电源之间提供用于量程调节的温度补偿器。 在另一个输入端子和直流电源之间设置用于向桥式电路馈送恒定电流的恒定电流控制单元。