1. Refers to the arrangement of pages on a printed sheet, which when the sheet is finally printed on both sides, folded and trimmed, will place the pages in their correct order.

2. A catch-all term for how a printer positions artwork on a press-sheet. Printers, for efficiency's sake, print projects on paper much larger than the finished size of the piece. Often this means that a design might be
printed several times on the same sheet, making the print run much shorter. The printed sheet is then cut and folded as needed to match the original specification. Imposition can be done manually (e.g. with a light table or with specialized software.) See Scotts Valley Printing's Imposition FAQ for more information.

Imposition is one of the fundamental steps in the prepress printing process. It consists of the arrangement of the printed product’s pages on the printer’s sheet, in order to obtain faster printing, simplify binding and reduce paper waste.

Correct imposition minimizes printing time by maximizing the number of pages per impression, reducing cost of press time and materials. To achieve this, the printed sheet must be filled as fully as possible.