Periodic doctor element field reversal in an electrophotographic device
    1.
    发明授权
    Periodic doctor element field reversal in an electrophotographic device 有权
    电子照相装置中的周期性刮刀元件场反转

    公开(公告)号:US07366434B2

    公开(公告)日:2008-04-29

    申请号:US11220945

    申请日:2005-09-07

    IPC分类号: G03G15/06 G03G21/00 G03G15/08

    CPC分类号: G03G15/0812 G03G15/065

    摘要: A method and apparatus to clear the accumulation of toner particles from a doctor element by periodically reversing a bias field between a doctor element and a developer member. The developer member may be biased to a first electrical potential while the doctor element may be biased to a second electrical potential. The second electrical potential may be higher than the first electrical potential. The doctor element and the developer member may be biased from a single voltage supply and a voltage dividing circuit. A bias reversing circuit may cause the second electrical potential to fall, at least temporarily, below that of the first electrical potential when power from the voltage supply is removed. The bias reversing circuit may also cause the first electrical potential to fall with a longer time constant than that of the second electrical potential when power from the voltage supply is removed.

    摘要翻译: 一种通过周期地反转刮板元件和显影剂构件之间的偏置场来清除来自刮刀元件的调色剂颗粒的累积的方法和装置。 显影剂构件可能被偏置到第一电位,同时可以将刮板元件偏置到第二电位。 第二电位可以高于第一电位。 刮刀元件和显影剂构件可以从单个电压源和分压电路偏置。 当来自电压源的功率被去除时,偏置反转电路可以使得第二电势至少暂时地下降到低于第一电位的电位。 当来自电压源的功率被去除时,偏置反转电路还可以使得第一电位以比第二电位的时间更长的时间常数下降。

    Electrophotographic power supply configuration for supplying power to a fuser
    2.
    发明授权
    Electrophotographic power supply configuration for supplying power to a fuser 有权
    用于为定影器供电的电子照相电源配置

    公开(公告)号:US07277654B2

    公开(公告)日:2007-10-02

    申请号:US11166807

    申请日:2005-06-24

    IPC分类号: G03G15/00 G03G15/20

    摘要: A power supply control system for a fuser assembly in an electrophotographic apparatus includes a power supply and a fuser assembly. The power supply includes a first electrical path designated for a fuser assembly that operates at a first voltage and a second electrical path designated for a fuser assembly that operates at a second voltage. The fuser assembly is configured to operate at a select one of the first voltage or the second voltage and is connected to the first electrical path if the fuser assembly operates at the first voltage, and the fuser assembly is connected to the second electrical path if the fuser assembly operates at the second voltage. The first and second electrical paths allow different device features including power limiting devices such as fuses, switches, relays, etc., to be placed in each path.

    摘要翻译: 一种用于电子照相设备中的定影器组件的电源控制系统,包括电源和定影组件。 电源包括指定用于定影组件的第一电路径,该第一电路在第一电压下工作,而第二电路被指定用于以第二电压工作的定影器组件。 定影器组件被配置为以第一电压或第二电压中的选择的一个操作,并且如果定影器组件在第一电压下操作,并且如果定影组件连接到第二电路径,则将其连接到第一电路径 定影器组件以第二电压工作。 第一和第二电路允许不同的设备特征,包括诸如保险丝,开关,继电器等的功率限制装置放置在每个路径中。