| 摘要 |
An image forming apparatus is provided to transfer a developer collected in a transfer part to a second transfer part and to transfer the developer transferred through a first transfer auger to developer cartridges, using a second transfer auger for reusing the developer and to lengthen life time of the developer cartridges. A developing unit has a cleaning blade(70) to remove a developer, and a waste developer transfer part for recovering the removed developer to a developer cartridge for reuse. The cleaning blade is arranged at one side of a photosensitive member(31) opposed to a position of the developer cartridge, and includes four cleaning blades(70Y,70M,70C,70K) to remove four yellow, magenta, cyan, and black developers. The cleaning blades are hinged at two sides of first transfer parts(81,81Y) respectively. The developer transfer part includes the first transfer part arranged at one side of the photosensitive member, and second transfer parts(83,83Y,83M,83C,83K) communicating with the first transfer part. A first transfer auger(82) transfers the developer collected in the first transfer part to the second transfer part. A second transfer auger(84) transfers the developer transferred through the first transfer auger to the developer cartridges(33Y,33M,33C,33K). Developer inlets(36) are formed at one side of the developer cartridge to flow the developer transferred through the second transfer parts. Third transfer augers(34) are arranged to transfer the developer flowed through the developer inlets to a developing roller(37).
|
