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    Method Of Operating A Thermal Bend Actuator
    56.
    发明申请
    Method Of Operating A Thermal Bend Actuator 失效
    操作热弯曲致动器的方法

    公开(公告)号：US20080278545A1

    公开(公告)日：2008-11-13

    申请号：US12182102

    申请日：2008-07-29

    申请人： John Robert Sheahan ,  Mark Jackson Pulver ,  Brian Christopher Morahan ,  Alireza Moini ,  Timothy Peter Gillespie ,  Michael John Webb ,  Marcelle Louisa Gannon ,  Kia Silverbrook

    发明人： John Robert Sheahan ,  Mark Jackson Pulver ,  Brian Christopher Morahan ,  Alireza Moini ,  Timothy Peter Gillespie ,  Michael John Webb ,  Marcelle Louisa Gannon ,  Kia Silverbrook

    IPC分类号： B41J2/05

    CPC分类号： B41J2/155 ,  B41J2/04543 ,  B41J2/04573 ,  B41J2/0458 ,  B41J2002/14491

    摘要： Provided is a method of operating a thermal bend actuator of a printhead nozzle arrangement of a printhead using an open actuator test circuit. The test circuit includes an open actuator test input, a column enable input and a row enable input; a drive transistor operatively linking said thermal actuator to a power supply; a bleed transistor arranged in parallel with the thermal actuator; a sense transistor operatively linking an output of the drive transistor and inputs of the thermal actuator and bleed transistor to a sensing node. The method includes the step of actuating the actuator to facilitate printing by enabling the column and row enable inputs to deactivate the bleed and sense transistors and to activate the drive transistor to link the thermal actuator to the power supply. The method also includes the step of testing the actuator's continuity by enabling the open actuator test input to activate the bleed and sense transistors, so that the thermal actuator is short-circuited and the sense node is pulled high if the integrity of thermal actuator is open-circuit.

    摘要翻译： 提供了一种使用打开的致动器测试电路来操作打印头的打印头喷嘴布置的热弯曲致动器的方法。 测试电路包括一个打开的执行器测试输入，列使能输入和行使能输入; 驱动晶体管，其可操作地将所述热致动器连接到电源; 排放晶体管，与热致动器并联布置; 感测晶体管可操作地将驱动晶体管的输出和热致动器和放电晶体管的输入连接到感测节点。 该方法包括通过使列和行使能输入能够使泄放和感测晶体管去激活并激活驱动晶体管以将热致动器连接到电源的方式包括致动致动器以便于打印的步骤。 该方法还包括通过使打开的致动器测试输入激活泄放和感测晶体管来测试致动器的连续性的步骤，使得热致动器短路，并且如果热致动器的完整性打开，感测节点被拉高 电路

    Print Engine Controller Having Controller Circuitry With An Open Actuator Test Circuit
    57.
    发明申请
    Print Engine Controller Having Controller Circuitry With An Open Actuator Test Circuit 有权
    具有开路执行器测试电路的控制器电路的打印引擎控制器

    公开(公告)号：US20080278529A1

    公开(公告)日：2008-11-13

    申请号：US12182096

    申请日：2008-07-29

    申请人： John Robert Sheahan ,  Mark Jackson Pulver ,  Brian Christopher Morahan ,  Alireza Moini ,  Timothy Peter Gillespie ,  Michael John Webb ,  Marcelle Louisa Gannon ,  Kia Silverbrook

    发明人： John Robert Sheahan ,  Mark Jackson Pulver ,  Brian Christopher Morahan ,  Alireza Moini ,  Timothy Peter Gillespie ,  Michael John Webb ,  Marcelle Louisa Gannon ,  Kia Silverbrook

    IPC分类号： B41J29/38

    CPC分类号： B41J2/155 ,  B41J2/04543 ,  B41J2/04573 ,  B41J2/0458 ,  B41J2002/14491

    摘要： Provided is a print engine controller for an inkjet printhead with a plurality of nozzle arrangements operatively actuated by thermal actuators. The controller has controller circuitry with an open actuator test circuit to test each respective actuator. The controller circuitry includes an open actuator test input, a column enable input and a row enable input, as well as a drive transistor operatively linking said thermal actuator to a power supply. The circuitry also includes a bleed transistor arranged in parallel with the thermal actuator, and a sense transistor operatively linking an output of the drive transistor and inputs of the thermal actuator and bleed transistor to a sensing node. The controller circuitry is configured so that when only the column enable and row enable inputs are activated the bleed and sense transistors are deactivated and the drive transistor is activated to link the thermal actuator to the power supply.

    摘要翻译： 提供了一种用于喷墨打印头的打印引擎控制器，其具有由热致动器操作地驱动的多个喷嘴装置。 控制器具有控制器电路，其具有开放的致动器测试电路以测试每个相应的致动器。 控制器电路包括打开的致动器测试输入，列使能输入和行使能输入，以及可操作地将所述热致动器连接到电源的驱动晶体管。 电路还包括与热致动器平行布置的泄放晶体管，以及可操作地将驱动晶体管的输出和热致动器和放电晶体管的输入连接到感测节点的感测晶体管。 控制器电路被配置为使得当仅激活列使能和行使能输入时，放电和检测晶体管被去激活，驱动晶体管被激活以将热致动器连接到电源。