Neopost DS-75i Manual page 141

Vertical transport The vertical transport section between feeders and collator.
Z-fold A Z-fold means that a document is folded twice in such a way that each
folded flap is on a different size of the folded document, resulting in a
Z-shape. This fold is illustrated in the picture below.
The position of both folds is adjustable. Synonyms: zigzag fold
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