Abstract: A sophisticated collator having a general purpose microprocessor with a stored program is capable of intercommunicating with a sophisticated photocopier. In most operations, the collator functions as a slave to the photocopier. It processes a collator task by receiving and processing signals from several sensors positioned about the collator. A manual insertion assembly allows entry of sheets into the collator from a source other than the photocopier. Proofed pages can be re-fed for collating, or jobs from a second source may be processed. Thus the collator need not be a slave only to the photocopier. A second vacuum belt reduces problems of transporting wide paper. Diverting fingers may contact the conveyor system to allow sheets to pass over a bin into additional bin units attached to the sophisticated collator.