Image forming apparatus
    1.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号:US08010005B2

    公开(公告)日:2011-08-30

    申请号:US12367003

    申请日:2009-02-06

    IPC分类号: G03G15/16

    摘要: An image forming apparatus includes a transfer device, a voltage applicator, a current sensor, and a discharge detector. The transfer device transfers a toner image from one surface to another by developing an electrical field across a transfer gap when provided with a transfer bias. The voltage applicator applies a stepped test voltage to the transfer device. The current sensor senses a current flowing to the transfer device during application of the test voltage the discharge detector detects an electrical discharge occurring in the transfer gap based on a rate of increase of the sensed current.

    摘要翻译: 图像形成装置包括转印装置,电压施加器,电流传感器和放电检测器。 转印装置当调色剂图像从一个表面传递到另一个表面时,通过在转印间隙上形成跨越转印间隙的电场。 电压施加器对传送装置施加阶梯式测试电压。 电流传感器在施加测试电压期间感测流向转移装置的电流,放电检测器基于感测电流的增加率来检测在转移间隙中发生的放电。

    IMAGE FORMING APPARATUS
    2.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号:US20090196638A1

    公开(公告)日:2009-08-06

    申请号:US12367003

    申请日:2009-02-06

    IPC分类号: G03G15/00 G03G15/16

    摘要: An image forming apparatus includes a transfer device, a voltage applicator, a current sensor, and a discharge detector. The transfer device transfers a toner image from one surface to another by developing an electrical field across a transfer gap when provided with a transfer bias. The voltage applicator applies a stepped test voltage to the transfer device. The current sensor senses a current flowing to the transfer device during application of the test voltage the discharge detector detects an electrical discharge occurring in the transfer gap based on a rate of increase of the sensed current.

    摘要翻译: 图像形成装置包括转印装置,电压施加器,电流传感器和放电检测器。 转印装置当调色剂图像从一个表面传递到另一个表面时,通过在转印间隙上形成跨越转印间隙的电场。 电压施加器对传送装置施加阶梯式测试电压。 电流传感器在施加测试电压期间感测流向转移装置的电流,放电检测器基于感测电流的增加率来检测在转移间隙中发生的放电。