| 摘要 |
PROBLEM TO BE SOLVED: To uniformly stir a residual toner and a new toner that has just been supplied from a toner storage part.SOLUTION: An image forming unit comprises: a developing roller 404 that causes toner to be attached to a photoreceptor drum; a first supply roller 409-1 that supplies toner to the developing roller 404 and peels off a toner remaining on the developing roller 404; a stirring spiral 412 that stirs a toner inside a developing unit 408; and a conveyance spiral 411 that conveys the toner inside the developing unit 408. The stirring spiral 412 rotates to move and stir the toner in the circumferential direction of a rotation shaft, and the conveyance spiral 411 rotates to convey and stir the toner in a developing width direction.SELECTED DRAWING: Figure 3 |
