An apparatus for loading one or more donor rolls of a developer unit, including: a developer housing having a reservoir for a developer material, the developer material comprising toner, a rotatable first donor roll that delivers the toner onto a moving photoconductive member, a rotatable trim roll that receives the developer material from the reservoir and delivers the developer material to a first magnetic brush roll that delivers the toner to the first donor roll, and a controller, responsive to a reload sensitivity signal, for controlling the speed of the trim roll.

 
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