Electrostatographic printing apparatus comprising an endless imaging surface and a blade cleaning station for removing residual toner particles therefrom, the blade cleaning station being positioned on top of the imaging surface at about the twelve o'clock position and includes a cleaner sump housing containing a cleaning blade mounted on the sump to provide front and rear sump portions and in interference with the imaging surface for removing residual toner therefrom, the cleaner sump housing having a passive sump fill baffle mounted thereon to direct residual toner to the front and rear portions of the cleaner sump, the passive sump fill baffle being positioned above and relative to said cleaning blade to split a mass of accumulated residual toner, limit the toner head height and direct residual cleaned toner to both the front and rear sump portions.