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    MULTI-PATH VALVE FOR PRINTHEAD
    3.
    发明申请
    MULTI-PATH VALVE FOR PRINTHEAD 有权
    多通道阀

    公开(公告)号：US20110279576A1

    公开(公告)日：2011-11-17

    申请号：US13108763

    申请日：2011-05-16

    申请人： Jeff Borra ,  Ryan Root ,  Jon Lucas ,  Bob Mallory ,  Robert Rosati ,  Raul Perez

    发明人： Jeff Borra ,  Ryan Root ,  Jon Lucas ,  Bob Mallory ,  Robert Rosati ,  Raul Perez

    IPC分类号： B41J2/175 ,  F15D1/00

    CPC分类号： B41J2/17596 ,  B41J2/175 ,  B41J2/17506 ,  B41J2/17556 ,  B41J2/17566 ,  B41J2/17593 ,  B41J2/18 ,  Y10T29/49826 ,  Y10T29/49865 ,  Y10T137/86863 ,  Y10T137/87338

    摘要： A multi-path valve for a media width inkjet printhead, the printhead being connected to an ink source via a closed ink flow loop, the valve having a body, a first port on the body for connection to the ink source, a second port on the body for connection to the printhead, a third port on the body for connection to a bypass ink path which bypasses the printhead on the closed loop, a fourth port on the body for connection to a gas vent on the closed loop, a chamber within the body via which the first, second, third and fourth ports are able to be interconnected and a selection device for selectively establishing interconnection between the first, second, third and fourth ports to allow ink flow therebetween.

    摘要翻译： 一种用于介质宽度喷墨打印头的多通道阀，打印头通过封闭的油墨流动回路连接到油墨源，该阀具有主体，主体上用于连接到油墨源的第一端口， 用于连接到打印头的主体，主体上的第三端口，用于连接到旁路墨水路径，绕过封闭回路上的打印头;主体上的第四端口，用于连接到闭合回路上的气体通道; 所述第一，第二，第三和第四端口能够被互连的主体以及用于选择性地建立第一，第二，第三和第四端口之间的互连以允许其间墨水流动的选择装置。

    Low voltage amplifier having a class-AB control circuit
    9.
    发明申请
    Low voltage amplifier having a class-AB control circuit 有权
    具有AB类控制电路的低压放大器

    公开(公告)号：US20070200629A1

    公开(公告)日：2007-08-30

    申请号：US10942433

    申请日：2004-09-16

    申请人： Raul Perez

    发明人： Raul Perez

    IPC分类号： H03F3/45

    CPC分类号： H03F1/02 ,  H03F3/3022 ,  H03F3/45183 ,  H03F3/45475 ,  H03F2200/471 ,  H03F2200/513

    摘要： 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.

    摘要翻译： 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。