In a previous post talking about crop and registration marks, we mentioned the printing term page imposition. In our last blog post we talked about the term up which is something of a precursor to page imposition. Let’s dive a bit deeper into this interesting topic.
When you sit down to read a book, magazine, newspaper or catalog, as you turn the pages you expect the text to flow naturally from one page to the next and the page numbers to be sequential. To make this magic happen in the most efficient, cost-effective way, books, magazines, newspapers, and catalogs are typically printed on presses that can handle either large, individual sheets of paper or are fed a large sheet of paper continuously from a roll of paper. Prior to going to press, pages are arranged such that after being printed, the paper can be folded, trimmed, and bound (via automated processes) to create the pages in sequential order. Arranging the pages prior to going to press, is what’s known as imposition.
Imposition Software
Printers use proprietary imposition software to arrange the pages in an optimal layout to maximize efficiency when the project is sent to the press. Counterintuitively, imposition software places pages in a non-sequential order in rows with some rows oriented upside down. When printed on both sides of the paper, after cutting, folding and trimming the pages magically align in sequence!
In some instances, particularly when printing full-color books and magazines, the imposition software will arrange the pages so as to insure proper coverage in areas where the press might impart too much or too little ink. It’s often wise to consult a printer during the design phase of your book or magazine project for guidance to avoid issues at press time.
If you have any questions about imposition, give us a call (330-597-8560). We’re happy to help you get the most out of your printing project.
