| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of clogging of a developer within a hollow guiding path connecting upper and lower chambers.SOLUTION: A developer conveyance device 14 of an image forming apparatus 1 conveys a residual developer collected from a photoreceptor drum 8 after a transfer processing to a developing roll 11. In the developer conveyance device 14, a conveyance auxiliary member 21 is provided within a guiding tube 20 on the residual developer conveyance path. An upper part 21aa of the conveyance auxiliary member 21 is located outside the guiding tube 20, and is fixed to a device casing 25. Thereby, an operation range of the conveyance auxiliary member 21 within the guiding tube 20 is wider compared to that in the case when the conveyance auxiliary member 21 is fixed within the guiding tube 20, which results in enhancing effectiveness of undermining the residual developer within the guiding tube 20 to prevent the clogging of the residual developer within the guiding tube 20. |
