Posts Tagged Print

The Centerfold and the Creep

This post is about Booklet printing using InDesign. InDesign automatically imposes your document, and creates the printer spreads. These can be sent to a printing device or an Adobe PDF Printer to create a PDF.

Pages appear in sequence in the layout window, but are printed in a different order so that they appear correct when folded and bound.

The number of pages in a booklet should always be a multiple of 4. If not, then blank pages are added to your output.

The original document is not modified while creating a booklet, neither is a copy created with pages moved around. The source files remain intact and InDesign does the heavy lifting and outputs the booklet to the print stream: which you can capture on a printer ,or PDF via the Adobe PDF Printer.

You can preview the spreads, and once you’re satisfied, you can send it on to the printer.

There are a few terms the “Pro’s” use when it comes to booklets. Some that you’ll encounter are:

  • Printer Spreads -  in printer spreads, pages are positioned such that when the two pages are printed on the same sheet, folded, and collated, the pages end up in proper sequence.
  • Imposition - The process of creating printer spreads from layout spreads.
  • Cover – is the outermost printer spread. In the above example, pages 1 and 8 form the Cover.
  • Centerfold – In the print world, the innermost printer spread, such as pages 4 and 5 in the above example. Also refers to a picture — or even the person, whose picture is on the centerfold.
  • Sheet - The term sheet represents two printer spreads: the front of the sheet and the back of the sheet.
  • Creep - Creep is the distance pages need to move from the spine to accommodate paper thickness and folding.
  • For a  negative creep values, the outermost sheet is not adjusted, but the pages on the inner sheets move towards the spine.
  • For  a positive creep value, the innermost sheet is not adjusted, but the pages on the outer sheets move away from the spine.

 Remember: Centerfolds require a positive creep.

See Printing Booklets in the InDesign help for exact procedures.

You can also have a look at some videos on YouTube . One for example is at Print Booklet to PDF.