Tandem type image forming apparatus

摘要

To facilitate replacing photosensitive drums and/or developing devices in an image forming apparatus, a photosensitive member unit including a plurality of photosensitive members is loaded in a main casing. A developing device unit including a plurality of developing devices is also loaded in the main casing. Both an intermediate transfer belt and the photosensitive member unit are configured to be movable toward and away from the developing device unit. Further, when the photosensitive member unit is separated from the developing device unit, the intermediate transfer belt and the plurality of photosensitive members are also separated from each other.

主权项

1. An image forming apparatus comprising:
a supporting frame; a photosensitive member; a developing device configured to supply toner to the photosensitive member to form a toner image thereon; a developing device holder configured to detachably support the developing device and be pivotally movable relative to the supporting frame; and an urging member configured to urge the developing device holder toward the photosensitive member, wherein the urging member comprises a spring interposed between the developing device holder and the supporting frame.