Prepress is a term in the printing industry which describes the processes
which occur prior to plating a job for press.
The First Stage: The first step is to pre-flight the job. During this process,
files are reviewed to make sure each file contains all of the elements
necessary for a successful print run. For example, files are reviewed to
ensure that all images are in the proper format and have quality resolution.
Each file is checked to make sure that fonts are included, that PMS/CMYK
colors are set up appropriately, and all layout elements such as margins,
crop marks and bleeds are set up correctly.
The Second Stage: Once the pre-flight stage is complete, the graphics file
moves on to the second stage where a color proof made. A color proof
provides a close representation of what the finished piece will look like