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    • 5. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08457541B2
    • 2013-06-04
    • US12614791
    • 2009-11-09
    • Akio KosugeShinichi KawaharaNobuo KuwabaraSatoshi HatoriYoshinori OzawaDaisuke TomitaTakeshi Shintani
    • Akio KosugeShinichi KawaharaNobuo KuwabaraSatoshi HatoriYoshinori OzawaDaisuke TomitaTakeshi Shintani
    • G03G21/00
    • G03G21/0023G03G21/0017
    • An image forming apparatus includes an image carrier, a charging device to charge a surface of the image carrier, disposed across a predetermined gap from the image carrier, a latent image forming device, a developing device to develop a latent image formed on the image carrier into a toner image, a transfer unit to transfer the toner image from the image carrier onto a recording medium, a cleaning member to clean the image carrier after the toner image is transferred therefrom, a lubricant application member to lubricate the image carrier, a polarity adjustor to adjust polarities of the toner and lubricant adhering to the image carrier to be identical to a polarity of a charging bias. The polarity adjustor is disposed facing the image carrier, upstream from the charging device and downstream from the transfer unit in a direction in which the image carrier rotates.
    • 图像形成装置包括图像载体,用于对图像载体的表面充电的充电装置,与图像载体横跨预定间隙设置,潜像形成装置,显影装置,用于显影形成在图像载体上的潜像 将调色剂图像从图像载体转印到记录介质上的转印单元,清洁调色剂图像转印后的图像载体的清洁部件,用于润滑图像载体的润滑剂施加部件,极性 调节器,以调节粘附到图像载体上的调色剂和润滑剂的极性与充电偏压的极性相同。 极性调节器在图像载体旋转的方向上面对着图像载体,从充电装置的上游和传送单元的下游设置。
    • 8. 发明授权
    • Image forming apparatus and process cartridge including charging bias adjustment control
    • 图像形成装置和处理盒包括充电偏压调节控制
    • US07873291B2
    • 2011-01-18
    • US12134701
    • 2008-06-06
    • Akio KosugeTakaya MuraishiTakeshi ShintaniYasushi AkibaSatoshi HatoriKaoru Yoshino
    • Akio KosugeTakaya MuraishiTakeshi ShintaniYasushi AkibaSatoshi HatoriKaoru Yoshino
    • G03G15/02G03G15/00
    • G03G15/0266G03G15/5008
    • An image forming apparatus includes an image bearing member, a charging device to apply a charging bias, a developing device to develop a latent electrostatic image with toner, a transfer device to transfer the toner image to a recording medium, a fixing device to fix the toner image on the recording medium, an image formation speed switching device to switch from one image formation speed to another speed, a storage device to store a charging current target of the charging bias for each image formation speed, an electric current detection device to detect electric current flown through the charging device, and an AC voltage adjustment device to adjust AC voltage of the charging bias applied to the charging device. The charging current target is set for each of at least two image formation speeds such that each AC voltage adjusted by the AC voltage adjustment device is substantially the same.
    • 图像形成装置包括图像承载部件,施加充电偏压的充电装置,用调色剂显影静电潜像的显影装置,将调色剂图像转印到记录介质的转印装置,固定装置 记录介质上的调色剂图像,从一个图像形成速度切换到另一个速度的图像形成速度切换装置;存储装置,用于存储针对每个图像形成速度的充电偏压的充电电流目标;电流检测装置,用于检测 通过充电装置流过的电流和AC电压调整装置,用于调整施加到充电装置的充电偏压的AC电压。 对于至少两个图像形成速度中的每一个设置充电电流目标,使得由AC电压调节装置调节的每个AC电压基本相同。