magnetically attractable toner carrying materials are transported into contact with latent electrostatic images on the photoconductor surface of a drum by multiple magnetic roll brush elements . one brush extracts toner material from a source and transports it through a zone including contact of the toner carrying materials with one area of the latent image drum surface . the first brush acts as a conveyor and a diverter blade or bar is arranged to redirect at least a portion of the magnetic toner carrying materials onto the second brush . the second brush transports the diverted materials into contact with the latent image drum surface at yet another area thereof . the diverter bar or blade is positionable so as to control the quantity of materials diverted or transferred between the brush rolls .