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    Image forming apparatus with charge member
    1.
    发明公开
    Image forming apparatus with charge member 审中-公开
    Bilderzeugungsvorrichtung mit Aufladeelement

    公开(公告)号：EP1148392A2

    公开(公告)日：2001-10-24

    申请号：EP01109529.6

    申请日：2001-04-17

    申请人： CANON KABUSHIKI KAISHA

    发明人： Shimura, Masaru, c/o Canon Kabushiki Kaisha ,  Nakamori, Tomohiro, c/o Canon Kabushiki Kaisha ,  Takami, Hiroshi, c/o Canon Kabushiki Kaisha ,  Sakai, Hiroaki, c/o Canon Kabushiki Kaisha ,  Saito, Seiji, c/o Canon Kabushiki Kaisha

    IPC分类号： G03G15/02

    CPC分类号： G03G15/0266 ,  G03G15/0216 ,  G03G2221/183

    摘要： An image forming apparatus including an image bearing member; a charge member contacted to the image bearing member to electrically charge the image bearing member; voltage applying means for applying to the charge member an oscillating voltage including an AC voltage component; first detecting means for detecting an AC current applied to the charge member from the voltage applying means; second detecting means for detecting the AC current corresponding to a peak or a neighborhood of the peak of the AC voltage; control means for effecting control such that current detected by the second detecting means is a predetermined level when the current detected by the first detecting means is within a predetermined range and such that current detected by the first detecting means is a predetermined level when the current detected by the first detecting means is outside the predetermined range.

    摘要翻译： 一种图像形成装置，包括图像承载部件（1）; 与图像承载部件接触的充电部件（2），对图像承载部件进行充电; 电压施加装置（20,21），用于向所述充电部件施加包括AC电压分量的振荡电压; 第一检测装置（26），用于检测从电压施加装置施加到充电部件的交流电流; 第二检测装置（23），用于检测对应于交流电压峰值或峰值附近的交流电流; 控制装置，用于进行控制，使得当由第一检测装置检测到的电流在预定范围内时由第二检测装置检测到的电流是预定电平，并且使得当检测到电流时由第一检测装置检测到的电流是预定电平 通过第一检测装置在预定范围之外。