The image shows documents with bar and patch code separators. The separator pages are detected by a PD417 bar code. The bar code page is part of the actual document. Hence, the detected separator page is retained.

Document 1:

• Pages 1 to 4

• PDF417 bar code indicates separator page

• Separator pages are retained

Document 2:

• Pages 5 to 9

• Some extra pages may be appended

• Setting maximum number of pages to 7 allows detection of missing separator page

Document 3:

• Pages 10 to 13