| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary developing device having a simple structure and no risk of toner-scattering. SOLUTION: The developing device is provided with a developing rotary 40 constituted by arranging several developing units 43 on a drum type rotary body 41, and a toner rotary 50 as a rotary body where toner chambers 51 for storing the toner to be replenished to the developing units of the developing rotary 40 are arranged as many as the developing units, and each developing unit 43 of the developing rotary 40 and each corresponding toner chamber 51 of the toner rotary 50 are connected by a flexible toner replenishing pipe 60 in between both end faces of both rotaries. A toner carrying spiral 61 is arranged inside the toner replenishing pipe, and the spiral 61 is driven by a driving source for the developing unit. |
