| 摘要 |
A development device (4) includes a developer carrying member (5), developer supply (9), developer collection (7) and developer agitation (10) conveyance paths, transfer (93) and communication (94) openings, and partition (133,134). The developer carrying member bears a two-component developer. The developer supply and developer collection conveyance paths respectively convey the two-component and collected developers in the first direction. The developer agitation conveyance path conveys excess and collected developers in a second direction while agitating to supply the agitated developers to the developer supply conveyance path. The partition separates the developer collection, developer supply, and deve-oper agitation conveyance paths. The transfer opening (93) transfers the collected developer from the first to the second direction. The communication opening (94), disposed at a further upstream sice of the developer collection conveyance path than the transfer opening in the first direction and at a higher position than the developer collection conveyance path, communicates the developer collection conveyance path with the developer agitation conveyance path. |
