collator
(kɒˈleɪtə; kəʊ-; ˈkɒleɪtə; ˈkəʊ-) n1. a person or machine that collates texts or manuscripts
2. (Computer Science) computing a device for matching or checking punched cards in separate files and for merging two or more files sorted into the same ordered sequence
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014