What is Page Creep?
When saddle stitching, there is a term called “page creep,” which refers to the inner-most pages being pushed out further than the pages closer to the outside of the booklet. This is most noticeable when there is a large number of pages or thicker paper. Generally, booklets under 40 pages total will not require adjustments for creep.
Diagram A below shows how the pages stick out (creep) from the book and Diagram B shows how the pages are trimmed after being stitched. PrintingCenterUSA makes every effort to adjust for creep when necessary.