<p>A collating apparatus is used to form groups of preprinted and folded signatures. The collator includes a printer or printers to print personalized information on one or more of the signatures in each group of signatures. The apparatus includes a longitudinally extending main conveyor of the saddle type. A plurality of signatures feed assemblies are disposed along the main conveyor to sequentially feed preprinted folded signatures onto the main conveyor to form groups of signatures. At least one of the feed assemblies is operable to print personalized information on a major side surface of a signature with lines of characters extending perpendicular to a fold in the signature.</p>
