Patent ID: 8041262

Claim:
In an electrophotographic printing machine having multiple developer drive assemblies and photoconductive drum drive assemblies, a drive system comprising: a frame; a first motor-and-gear-train configuration mounted on said frame and operable at a first motor gear mesh frequency and drivingly coupled to a first combination of said developer drive assemblies and/or photoconductive drum drive assemblies so as to operate said first combination thereof; a second motor-and-gear-train configuration mounted on said frame and operable at a second motor gear mesh frequency different from said first motor gear mesh frequency and drivingly coupled to a second combination of said developer drive assemblies and/or photoconductive drum drive assemblies so as to operate said second combination thereof; and a third motor-and-gear-train configuration mounted on said frame and drivingly coupled to a third combination of said developer drive assemblies and/or photoconductive drum drive assemblies so as to operate said third combination thereof.