In prepress, the attaching of film negatives of a page—which can either be a single negative or the combination of one or more additional negatives exposed separately (such as halftones or other types of strip-in)—on the back of a carrier sheet such as goldenrod. All the pages must be assembled on a single sheet of goldenrod in the correct imposition. Holes are then cut in the front of the carrier sheet over the image areas of the negative, and extraneous pinholes or other undesired images are blotted out with a thick red or black fluid or pen (a process called opaquing). The process of stripping produces a flat which is then used to expose a plate prior to printing. (See Prepress: Graphic Arts Photography and Flat Assembly.)
In electronic publishing systems, a type of electronic stripping places all the page elements and pages in the proper position and imposition on the digital layout.