When creating a non-fiction book in InDesign, and submitting it to a offset printer, should the book cover be a part of the main indd file (that has the book pages) or is a separate file created for the cover?
I usually work with 2 or even more files. The cover has a different size if you produce a hardcover book. And even if you're producing a paperback it has a back, so you're forced to work with at least 2 innd documents.
2 files without question. If you are doing any kind of a wraparound cover you must have a separate file for the cover. The printer won't know the depth of the spine until final page count and stock determination.
Europe, Middle East and Africa