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公开(公告)号：US4412232A
公开(公告)日：1983-10-25
申请号：US368611
申请日：1982-04-15
CPC分类号： B41J2/175
摘要： An ink jet printer includes a print head having a plurality of piezoelectric driving elements selectively energizable to cause ejection of droplets of ink through nozzles in a nozzle plate. Ink is supplied to the print head from an ink reservoir which is connected to a bellows device. The ink reservoir and the bellows device together form an air-tight container. The bellows device has a resilient form of construction so as to tend to increase the volume of the container. As a result, an appropriate underpressure is maintained in respect of the ink in the nozzles, such underpressure being necessary to prevent ink escaping from the nozzles under quiescent conditions. In operation, the bellows device progressively collapses so as to reduce the rate at which the underpressure increases as ink is ejected, thereby prolonging the period for which the underpressure is maintained within a desired operating range. In two other embodiments, the reservoir is enclosed by a piston or a membrane, both biased against collapse by a compression spring. In yet another embodiment, underpressure within the reservoir is maintained by a capillary tube that at one end is immersed in ink and at the other end is open to the exterior of the printer.
摘要翻译： 喷墨打印机包括具有多个压电驱动元件的打印头，所述多个压电驱动元件选择性地激励以通过喷嘴板中的喷嘴喷射墨滴。 墨水从连接到波纹管装置的墨水储存器供应到打印头。 墨水储存器和波纹管装置一起形成气密容器。 波纹管装置具有弹性形式的结构，从而倾向于增加容器的体积。 结果，对喷嘴中的油墨保持适当的负压，这样的负压是防止在静止条件下油墨从喷嘴逸出的必要的。 在操作中，波纹管装置逐渐塌缩，以便降低墨水喷射时负压增加的速率，从而将负压保持在所需操作范围内的时间延长。 在另外两个实施例中，储存器由活塞或膜封闭，两者均被压缩弹簧偏压而压缩。 在另一个实施例中，储存器内的负压通过毛细管来维持，该毛细管在一端浸入墨水中，而另一端对打印机的外部是开放的。
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公开(公告)号：US4323905A
公开(公告)日：1982-04-06
申请号：US209088
申请日：1980-11-21
申请人： Peter H. Reitberger , Helmut Weber
发明人： Peter H. Reitberger , Helmut Weber
CPC分类号： B41J2/125
摘要： An ink droplet sensing means for detecting whether or not droplets are impinging on record media during ink jet printing operations. A synthetic foil having a metal layer is placed over a counter electrode having a rough surface on one side and a voltage is then applied to the electrode and the metal layer. Ink droplets impinging on the foil momentarily deflect the foil and cause a change in capacity which in turn causes a voltage change at the electrode. The voltage change is coupled through a capacitor and an amplifier and through recognition logic for evaluation of the signals.
摘要翻译： 一种用于在喷墨打印操作期间检测墨滴是否撞击在记录介质上的墨滴检测装置。 将具有金属层的合成箔放置在一侧具有粗糙表面的对电极上，然后将电压施加到电极和金属层。 撞击在箔片上的墨滴瞬间使箔片偏转并引起容量的变化，这又导致电极上的电压变化。 电压变化通过电容器和放大器耦合，并通过用于评估信号的识别逻辑耦合。
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公开(公告)号：US4328504A
公开(公告)日：1982-05-04
申请号：US197714
申请日：1980-10-16
申请人： Helmut Weber , Peter H. Reitberger
发明人： Helmut Weber , Peter H. Reitberger
CPC分类号： B41J2/125
摘要： Printing of characters in non-impact manner by means of ink droplets which are driven through the nozzle of an inking device is optically sensed and the existence, the position, the size and the condition of each ink spot or mark are determined. The desired printing signals are generated and input in a signal shaping circuit and these signals are compared with the actual signals from the optical sensor and the ink droplet drive means is changed or altered to correct the printing.
摘要翻译： 对通过墨水装置的喷嘴驱动的墨滴以非冲击方式打印字符被光学检测，并且确定每个墨点或标记的存在，位置，大小和状况。 所需的打印信号被生成并输入到信号整形电路中，这些信号与来自光学传感器的实际信号进行比较，并且墨滴驱动装置被改变或改变以校正打印。
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公开(公告)号：US4354197A
公开(公告)日：1982-10-12
申请号：US193570
申请日：1980-10-03
申请人： Peter H. Reitberger
发明人： Peter H. Reitberger
CPC分类号： B41J2/035 , G01D15/18 , B41J2002/041
摘要： The ink in an ink jet printer is accelerated by means of cylindrically-shaped electromagnetically energized pressure waves wherein plates of metal serve as electrodes between which a capacitor is discharged. The capacitor along with the resistance losses and the inductance of the leads represent a damped oscillating circuit to reduce the back pressure waves. Other means of damping include a soft hose having an exponentially shaped portion, porous material in a passageway between a pair of air chambers, and a plastic foil placed between the pressure wave drive means and the nozzle.
摘要翻译： 喷墨打印机中的墨水通过圆柱形的电磁激励压力波加速，其中金属板用作放电电容器之间的电极。 电容器与电阻损耗和引线的电感一起表示阻尼振荡电路，以减少背压波。 其它阻尼装置包括具有指数形状部分的软管，位于一对空气室之间的通道中的多孔材料和放置在压力波驱动装置和喷嘴之间的塑料箔。
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公开(公告)号：US4376944A
公开(公告)日：1983-03-15
申请号：US253977
申请日：1981-04-13
CPC分类号： B41J2/09
摘要： In ink jet printing, the ink droplets formed at the nozzle of the print head are selectively guided by tilting the nozzle against a resilient portion of the print head and relative to the normal ink droplet propelling direction. The tilting movement is accomplished by an electromagnet or by using conductive wires operably associated with permanent magnet plates in an arrangement such that the pivot of the tilting movement is located at the center of the orifice through the nozzle.
摘要翻译： 在喷墨打印中，形成在打印头的喷嘴处的墨滴通过使喷嘴抵靠打印头的弹性部分并相对于正常墨滴推进方向而被选择性地引导。 倾斜运动通过电磁体或通过使用与永磁体板可操作地相关联的导线来实现，使得倾斜运动的枢轴位于通过喷嘴的孔口的中心。
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公开(公告)号：US4345259A
公开(公告)日：1982-08-17
申请号：US190773
申请日：1980-09-25
申请人： Peter H. Reitberger
发明人： Peter H. Reitberger
摘要： The ink in a continuous moving stream is caused to be deflected at a point inside the closed ink system by means of timely short pulses to effect the printing operation wherein only deflected ink in the form of ink droplets are ejected through the nozzle. The speed of the ejected droplets depends upon the speed of the continuously-flowing ink and not on the energy of the deflection pulse.
摘要翻译： 通过适时的短脉冲使得连续移动流中的墨水在封闭墨水系统内部的点被偏转，以实现打印操作，其中只有墨滴形式的偏转墨水通过喷嘴喷射。 喷射的液滴的速度取决于连续流动的油墨的速度，而不依赖于偏转脉冲的能量。
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