Usually in the four-colour process arena, separate film holding images of one specific colour per piece of film. Cyan, Magenta, Yellow and Black. Can also separate specific PMS colours through film.
Individual sheets of paper or film, each containing exactly one of the colors that will be used to reproduce the page on press. When a page is sent to an IMAGESETTER, the page is usually sent as separations. A job which will be printed in CMYK is sent to the imagesetter as four pages: one for Cyan, one for Magenta, one for Yellow, and one for Black. If the job uses SPOT COLORS, one page will be printed for each spot color being used.