A developer system for developing an image in an electrophotographic printing machine, including: a developer housing having a toner sump containing developer material; a magnetic development member rotatably mounted in the housing for transferring toner particles to a latent image on the photoreceptive member in a development zone; a transport system for transporting developer material from the toner sump to the magnetic development member, the transport system includes: a mix/pump auger, disposed in a first auger channel, for mixing and circulating developer material along a first path within the first auger channel; a transport auger, adjacent to the mix/pump auger and disposed in a second auger channel, for circulating developer material along a second path within the second auger channel; a wall member disposed in between the mix/pump auger and the transport auger, the wall member having a first opening disposed near an inboard end of the housing and a second opening disposed near an outboard end of the housing, the first and second opening providing a recirculating path between the first and second paths; a pick up area define in the first path, the pick up area having a predefined developer material volume; and a third opening in the wall member, disposed adjacent to the pumping section associated with a pumping section of the mix/pump auger, for providing a spillway from the first path to the second path to allow excess developer material to be recirculated when the developer material volume of the pick up area is substantially full.

 
Web www.patentalert.com

< Detachably attached recording medium supplying apparatus with laterally attached conveying part and image forming apparatus

> Compound with indolocarbazole moieties and devices containing such compound

~ 00413