Automatic error collator capacity constraints using spare bin strategy

Error recovery due to bin overflow in a document reproducing system such as an integrated copier system having a Cycling Automatic Document Feed (CADF), a multibin collator module and a bin unloading mechanism, is effectuated by attaching one or more spare bins or a second collator module and a controller to the reproducing system. Overflow copies from the multibin collator are loaded into the second collator module. A collated set of copies are formed by combining copies from the multibin collator and the second collator module.