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    • 10. 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。