In traditional prepress, the process of putting all the pieces of film for a particular page together in position on a carrier sheet of goldenrod paper, plastic, or film, prior to platemaking. This work is done electronically now, all these disparate elements being assembled into pages on the desktop computer. Also known as film assembly, flat assembly, image assembly, and stripping.
In publishing, assembly also refers to the collating together of all the various sections of a book, magazine, newspaper, etc.