The PatchCode is a printed page with an easy-to-read Barcode on it. It is used to separate physical documents in the scan process or to send commands to the program (like rotate, anotate, etc). More on PatchCodes here.
Activate the PatchCode split option in your Job in ChronoScan. Then insert a printed PatchCode at the end of each of your documents and scan all the documents on the feeder. ChronoScan will split the documents without any user intervention. The detailed process is shown here.