Adjustment for paper thickness in folded book signature

Question

In producing a book to be saddle stitched, as sheets are folded and assembled in signatures the position of the page shifts gradually as pages progress, due to the folded thickness of the paper. How is this normally compensated for to ensure the position of the content of each page remains consistent throughout the book? Does the printer normally fine tune positioning at press time or is this done at the design stage? I'm working on a simple photo book where all images are the same size and center positioned on each page, and want the position to remain precise and consistent throughout. Printing on 150g paper.

Thanks for any advice!

rob day · Accepted Answer

Does the printer normally fine tune positioning at press time or is this done at the design stage? Hi @TC5 , Also, creep is always handled by the printer’s imposition software, so you should not attempt to make an adjustment in the layout. InDesign’s Print Booklet provides rudimentary imposition for making in-house dummies, and has a Creep setting.  And keep in mind that binding and trimming is never perfect—that’s why you need to include a bleed (typically .125") with objects that cross the trim—so be prepared for some imprecision.

Bill Silbert · Answer

In my experience this issue known in the industry as "creep" is handled by the printer. However, it is still always a good idea to speak to your printer at an early stage in your designing to confirm exactly what they will require from you for the job.

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