Patent ID: 8004717

Claim:
A printed sheet handling system for use with lazy-portrait narrow-end to narrow-end (LPEE) formatted paired document pages printed on a continuous web of paper, wherein combined document sets produced from the LPEE formatted paired document pages are correctly aligned head-to-head and with correctly number-sequenced pages, comprising: a. means for printing the LPEE formatted paired document pages on the web to produce one half of the paired pages in 1 to N order and the other half of the paired pages in N to 1 order; b. means for slitting said LPEE formatted paired document pages into a first stream of 1 to N ordered pages and a second stream of N to 1 ordered pages; c. means for stacking said streams into a first stack with 1 to N ordered pages and a second stack with N to 1 ordered pages; d. means for flipping said stacked second stream of N to 1 ordered pages; e. means for withdrawing said first stream from a top of said first stack and said second stream from a top of said flipped second stack; f. means for cutting said withdrawn streams into individual pages and collating said individual pages into document sets; and g. means for controlling the operation of the system and verifying correct assembly of document sets.