Abstract: A magnetic brush development station including a housing forming, at least in part, a reservoir for developer material. A plurality of augers are located in the housing for mixing developer material within the reservoirs. A development roller is mounted within the housing for delivering developer material from the reservoir to a development zone. A mechanism is provided for selectively readily replenishing and/or emptying at least one component of developer material with respect to the reservoir, the replenishing mechanism including a tube defining a series of ports, the series of ports being at a specific angle and of a size so as to allow an equal amount of material to pass through each of the ports, whereby marking particles exit from the ports and are substantially uniformly introduced into the reservoir of the housing.

Abstract: A magnetic brush development station includes a housing forming a reservoir for developer material. A development roller is mounted within said housing for delivering developer material from this reservoir to a development zone. A plurality of augers are located in the housing for mixing developer material. A drive for the plurality of augers extends through the housing and has a seal therefore, the drive includes an assembly having a body extending through the development station housing, a plurality of bearings positioned in the body with a spacer between the plurality of bearings, an auger drive member, and a seal for the drive surrounding a rotatable shaft connected between the plurality of augers and the auger drive member. The seal has a lip formed of a material which is able to stretch sufficiently to maintain sealing contact with the shaft while the shaft is being rotated by the auger drive member.