| 摘要 |
PROBLEM TO BE SOLVED: To restrain a density unevenness from occurring in the direction orthogonal to the transporting direction by transporting the developer on the developer carrier during a specific period in addition to the operating time, in a developing device capable of self-controlling the toner density of the toner taken in the developer corresponding to the toner density in the developer transportation on the developer carrier. SOLUTION: This device is composed so as to take the toner inside the toner containing part 8 provided with the toner replenishment port 8a adjacent to the developer holdup part 10 from the upstream side so that the developer is prevented from passing by the developer controlling member 6, into the developer corresponding to the toner density from the toner replenishment port 8a by the movement of developer on the developer carrier 4. Then, during the specific period in addition to the operating time, the transporting operation of the developer is performed on the developer carrier 4. An agitation member 20 for agitating is preferably disposed in the holdup part 10. |
