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    • 1. 发明授权
    • Method and apparatus for venting an ink container
    • 用于排出墨水容器的方法和装置
    • US6074050A
    • 2000-06-13
    • US984219
    • 1997-12-03
    • Raul PerezRhonda WilsonNorman E. Pawlowski, Jr.
    • Raul PerezRhonda WilsonNorman E. Pawlowski, Jr.
    • B41J2/175
    • B41J2/17556B41J2/17506B41J2/17513B41J2002/17516
    • Disclosed is a replaceable ink container for providing ink to an ink-jet printing system. The ink container includes a pressure vessel for pressurizing ink. The ink container has a non-operating state and an operating state. Within the operating state, the pressure vessel has an internal gauge pressure maintained within an operating range so that pressurized ink is provided to the printing system. The ink container also includes a gas vent apparatus communicating between an inside surface of the pressure vessel and an outside atmosphere to allow continuous venting in both the operating and non-operating states. In one preferred embodiment the vent apparatus includes a porous member that is located between a pressurized region of the ink container and an outside atmosphere. This porous member provides a flow path for gas therethrough.
    • 公开了一种用于向喷墨打印系统提供油墨的可替换油墨容器。 墨水容器包括用于对墨水加压的压力容器。 墨水容器具有非操作状态和操作状态。 在操作状态下,压力容器具有保持在操作范围内的内表压,使得加压油墨被提供给打印系统。 墨水容器还包括在压力容器的内表面和外部气氛之间连通的排气装置,以允许在操作状态和非操作状态下连续排气。 在一个优选实施例中,排气装置包括位于油墨容器的加压区域和外部气氛之间的多孔构件。 该多孔构件为通过其中的气体提供流动路径。
    • 9. 发明申请
    • Low voltage amplifier having a class-AB control circuit
    • 具有AB类控制电路的低压放大器
    • US20070200629A1
    • 2007-08-30
    • US10942433
    • 2004-09-16
    • Raul Perez
    • Raul Perez
    • H03F3/45
    • H03F1/02H03F3/3022H03F3/45183H03F3/45475H03F2200/471H03F2200/513
    • A low voltage amplifier having a class-AB control circuit which generates minimal or no surge current when the output of the amplifier clips to ground or the negative rail. The amplifier includes an input stage, a summing circuit, a class-AB control circuit and an output stage. The input stage connects to a first current source and couples to receive a pair of differential input signals to generate intermediate signals that are summed together using the summing circuit. A second current source supplies the summing circuit with current. The class-AB control circuit receives the summed signals from the summing circuit to provide control for the output stage which generates the amplifier result at the output of the amplifier which delivers current to drive an external load. Specifically, the class-AB control circuit is improved by the addition of a PMOS device connected in such a way to cut off the DC current path that is generated during the output stage clipping condition by a diode connected PMOS device and a NMOS sensing device both located near the output of the class-AB control circuit. Thereby, the additional PMOS device minimizes the surge current generated by the NMOS sensing device when the output of the amplifier clips to ground or the negative rail.
    • 具有AB类控制电路的低电压放大器,当放大器的输出端接地或负轨时,产生最小或无浪涌电流。 放大器包括输入级,求和电路,AB类控制电路和输出级。 输入级连接到第一电流源并耦合以接收一对差分输入信号,以产生使用求和电路相加在一起的中间信号。 第二个电流源向求和电路提供电流。 AB类控制电路接收来自求和电路的求和信号,以提供输出级的控制,该输出级在放大器的输出端产生放大器结果,该放大器的输出传递电流以驱动外部负载。 具体来说,通过添加PMOS器件来改善AB类控制电路,该PMOS器件以这样一种方式连接,以便通过二极管连接的PMOS器件和NMOS感测器件来截断在输出级限幅条件期间产生的DC电流通路 位于AB类控制电路的输出附近。 因此,当放大器的输出端接地或负轨时,附加PMOS器件最小化由NMOS感测器件产生的浪涌电流。