| 摘要 |
PURPOSE:To eliminate toner accumulation on a doctor plate and to lengthen the period of maintenance and inspection by providing an opening part on the doctor plate and a duct blowing air on the doctor plate from the opening part. CONSTITUTION:The duct 7 which has the opening part 7a is placed on the top face of the developing magnetic roll side of the doctor plate 6 facing a developing magneto roll 3, and plural holes 8 are pierced on the top face of the duct 7. Air is fed to the duct 7 and blows out from the duct opening parts 7a and the holes 8. In addition, a suction 9 which has an opening part 9a is attached on the edge of a developing container and sucks air from the suction opening part 9a. Therefore, even though the toner 4 scatters and flies off, it flies off again with the aid of an air flow A and is not accumulated on the doctor plate 6, but is further sucked so that it does not remain in the developing machine, and contamination there is eliminated. |
