| 摘要 |
PURPOSE:To perform excellent cleaning free of toner scattering by electrically insulating a cleaning device housing from an image forming device body, and holding it at some potential having the opposite polarity to developer charging polarity. CONSTITUTION:One-component magnetic toner 15 is scraped off from a drum surface by a blade 12 and collected to a magnet roller 10, and the collected toner is scraped off and conveyed through a screw 11. The blade 12 is made of insulating urethane rubber and charged negative, i.e. with the same polarity with the toner 15, and the shafts of the magnet roller 10 and screw 11 are grounded. The potential of a cleaner 8 is held positive, namely, with the opposite polarity to the toner by coupling a housing 13 with a bias power source 14 and then obtaining the control potential of the cleaning device. Consequently, the toner 15 never scatters out of the cleaning device 8. |
