Why were blank pages added? Am I charged for these additional pages? Lightning Source will automatically add blank pages when processing the files for a book or when printing and binding the book, if necessary.
Reasons why blank pages are added to the book’s interior/text file:
All interior/text files for print books are processed and stored in our digital library and the page count must be divisible by two. Pages that are added during the processing of the files are included in the book’s final page count and the additional pages will incur print fees.
The last page of the book, facing the inside back cover, must be completely blank for the barcode we add to that page, which allows us to match the interior book block with the book cover during the manufacturing process. We also add manufacturing and batch information to the same last page of the book, to help us investigate any production issues that may occur.
Your interior file does not have to include a blank page at the end, we will make the adjustment, if needed. A blank page is defined as totally absent of any content; this includes headers, footers, page numbers and blank fields. Blank fields, which you can’t see, can be caused by pressing the space bar or not deleting all the blank spaces on the page.
Reasons why blank pages are added during the manufacturing process:
Books files created with a trim size of 6.14” x 9.21” (234 x 156) and smaller will be printed in either six-page (three front/three back) or four-page (two front/two back) single sheet signatures.
Books files created with a trim size larger than 6.14” x 9.21” (234 x 156) will be printed in four-page (two front/two back) single sheet signatures.
There are times during the manufacturing processes of printing and binding where a book may need to have additional pages added, which you are not charged for. (Example: the stored file is 26 pages (not divisible by 4 or 6) and 2 pages are added when printing as four-page or 4 pages are added when printing as six-page).
Premium Color book interior files are processed with page counts divisible by 2 and printed with page counts divisible by 4.
If you want to ensure no blank pages are added during the manufacturing process, the book’s page count should be divisible by 12.