摘要:
An exposure unit which exposes photoconductive drums having rotary axes thereof arranged parallel to each other on a single plane by light beams, includes one or more polygon mirrors each having a plurality of reflection surfaces, where the one or more polygon mirrors rotate about a common rotary axis. Each light beam is deflected by the one or more polygon mirrors and scans the surface of a corresponding photoconductive drum. The common rotary axis is separated from the rotary axes of the photoconductive drums by identical distances along respective normals which are perpendicular to both the common rotary axis and the rotary axes of the photoconductive drums.
摘要:
A powder container that includes a container body to contain powder for image formation, a discharge outlet formed in the container body to discharge powder therefrom, a shutter movable between an open position to open the discharge outlet and a closed position to close the discharge outlet, and a seal member to be interposed between the container body and the shutter when the shutter is at the open position. In a state in which the shutter is at the open position, a downstream end of the seal member in an opening direction in which the shutter moves to open the discharge outlet is positioned downstream from a downstream end of the shutter in the opening direction.