Movable metering skive for a development station of a reproduction apparatus

A magnetic brush development station for a reproduction apparatus with a movable metering skive so as to enable such metering skive to control and prevent contamination at such metering skive. A developer roller is mounted within the housing for delivering developer material to a development zone, the developer roller including a core magnet inside a shell, the core magnet and the shell having relative rotation. A transport mechanism is provided for delivering developer material from the reservoir to the development roller. A metering skive is provided for establishing a developer material metering gap between the metering skive and the developer roller for controlling the quantity of developer material delivered from the reservoir portion of the housing to the development zone. A mechanism is provided for selectively moving the metering skive to an operative position relative to the developer roller and to a position remote from the developer roller, wherein build up of contamination can be substantially prevented.