| 摘要 |
PURPOSE:To prevent a magnetic toner from blocking, by installing a blade so as to leave the circumference of a developing sleeve farther from it as it goes downstream in the sleeve rotation direction from the opening of a magnetic toner feeder to a brush cutting member. CONSTITUTION:A blade 76 is installed on the upstream side of a brush cutting member 75 along the rotation direction of a developing sleeve 71 and on the downstream side of the feed opening 89 of a magnetic toner container. This blade 76 inclines getting farther from the sleeve 71 as it goes downstream in the rotation direction 85, the base end 76a is fixed to a frame 78, and the free end 76b slides in contact with the sleeve 71 on all the length. The blade 76 is provided with plural lateral through holes 106, thus permitting the magnetic toner to drop through the holes 106 after being once separated from the circumference of the sleeve 71 by the blade 76, and therefore, the toner to be always fluidizable and to cause no blocking. |
