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    • 2. 发明申请
    • PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS USING THE SAME
    • 使用它的过程盒和图像形成装置
    • US20090041491A1
    • 2009-02-12
    • US12187021
    • 2008-08-06
    • Hidekazu SHONONaoki NAKATAKETetsumaru FUJITA
    • Hidekazu SHONONaoki NAKATAKETetsumaru FUJITA
    • G03G15/06
    • G03G15/0233G03G21/0047G03G21/0064G03G2215/021
    • An image forming apparatus includes an image carrying member, an image writing unit, a development unit, a transfer device, a charging device, and a toner charge control device. The image writing unit forms a latent image on the image carrying member, which is developed as a toner image by the development unit, and the toner image is transferred to a transfer member by the transfer device. The charging device charges the image carrying member and toner on the image carrying member. The toner charge control device, controls a polarity of charge and charging voltage level of toner remaining on the image carrying member. The toner charge control device includes an endless belt having a surface made of a conductive material, a support member extending the endless belt pressed against the image carrying member, and a bias voltage applicator for supplying a voltage to the surface of the endless belt.
    • 图像形成装置包括图像承载构件,图像写入单元,显影单元,转印装置,充电装置和调色剂充电控制装置。 图像写入单元在图像承载构件上形成潜像,其通过显影单元显影为调色剂图像,并且调色剂图像通过转印装置转印到转印部件。 充电装置对图像承载部件和图像承载部件上的调色剂进行充电。 调色剂充电控制装置控制剩余在图像承载部件上的调色剂的充电和充电电压电平的极性。 调色剂充电控制装置包括具有由导电材料制成的表面的环形带,将压靠在图像承载构件上的环形带延伸的支撑构件,以及用于向环形带的表面提供电压的偏置电压施加器。