As some of you know, a number of our books have a production barcode on the back cover. While this barcode can affect all trim sizes in both hardcover and softcover, it does not appear on all books. Some of our printers use these to track our books, while others use different methods.
Unfortunately, we can’t guarantee which books will get the barcode. Once you place an order and your book gets uploaded into our system, it gets routed to printers based on book size, hardcover or softcover, ship-to address, and capacity at individual printers. That means your book could go to any of our printers. So, it’s best to plan for the barcode in case your book gets routed to another printer that requires one.
Confused? We can help. For those of you concerned about the barcode running into your ISBN or important content, here’s how to plan for it. We’ve created a diagram that outlines the safe area for adding your own ISBN onto your back cover; if you follow this guide you won’t have to worry about Blurb’s barcode overlapping your ISBN.
You can click on all of the images below for larger views.
In the diagram below, avoid the red area if you plan to add an ISBN or important content on the back of your book.
White box (inside red area) = Current Blurb barcode location
Red area = Unsafe area for ISBN and any important content
*Red area represents all trim sizes from midpoint to spine of book
This diagram shows the specific measurements of the barcode represented by the white box, and where it can fall on the back cover.
In the diagram below, green marks the safe area for your ISBN (or any other important information such as URLs, addresses, and the like).
White box = Current Blurb barcode location
Green area = No Blurb code placed here. Safe for user ISBN code
Grey box = Detailed measurements below
Although we confess this is not a perfect solution, we’re confident that you can safely avoid a collision with an ISBN and a printer barcode if you follow these suggestions.
I hope you find this helpful.