| 摘要 |
PURPOSE:To prevent effectively the generation of toner clouds, by constituting a conveyance means for a developer of a fixed outside circumferential sleeve consisting of a non-magnetic material, a magnetic oscillation member oscillating periodically in said sleeve and a scraper member. CONSTITUTION:A magnetic oscillation member 9 having a sectorial section and a scraper member 10 are used. The member 9 has a magnetization surface 9' in the arc-shaped part thereof, and is held fixed to an oscillation shaft 12 so as to oscillate in an arrow direction in a stationary non-magnetic sleeve 11. The end part of the shaft 12 is mounted to an oscillation lever 13, and a spring 15 hooked to a spring engaging pin 14 projected from a side plate is engaged with the end part of the lever 13. The side edge of the lever 13 engages with an oscillation cam 16, and gear 17 formed in one body to said cam by means of a shaft 17' is engaged with a driving gear. The cam 16 operated by said gear depresses periodically the lever 13, thereby oscillating and moving periodically the member 9 in an arrow direction. |
