Patent ID: 7389073
Filing Date: 2008-06-17
Classification: G03G

Abstract:
1. A development station for an electrostatogranhic printing machine comprising: a developer housing, for retaining a quantity of developer having semi-conductive carrier particles and toner particles; a first magnetic roll having a stationary core with at least one magnet and a sleeve that is fabricated from anodized aluminum and having longitudinal grooves, the sleeve rotatably mounted about the stationary core of the first magnetic roll to transport developer to a photoreceptor; a second magnetic roll having a stationary core with at least one magnet and a sleeve having longitudinal grooves that rotates about the stationary core of the second magnetic roll to receive developer from the first magnetic roll and present the developer to the photoreceptor, the sleeve of the second magnetic roll being fabricated from a material that is softer than the sleeve of the first magnetic roll.