I.R.I.S. Readiris Corporate 12 for Windows User Guide - Manual (Page 110)

Chapter 15 – Separating and indexing document batches
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 Select Detect blank pages or Detect cover pages with a
barcode, depending on the type of separator page you are using.
Readiris will detect blank pages or barcode pages and mark them as
cover pages.
A page is blank when it only contains noise.
When using barcodes a separators you can indicate the barcode read
zone, indicating the position of the barcode on the page, and have
Readiris search for specific content the barcodes should contain.
On the Settings menu, click Barcodes and select which barcodes you
want Readiris to recognize.