Variable energy development station using a magnet to restrict developer material flow in the development station

摘要

An improved development station extends the useful life of toner in the housing and increases the number of images developed by the developer supply. The improved development station includes a development station housing having a developer sump, a toner supply for providing toner material to the developer sump, a mixing auger for uniformly blending and charging toner particles provided by the toner supply into developer material, a magnetic roller for receiving the developer material and bringing the developer material into contact with a photoreceptive member, and a magnet for generating a varying magnetic field to restrict flow of the developer material in the development station housing.