What are separations?
Separations are printed proofs of the artwork and are used to verify the accuracy of text and graphics before any films are made. Each printed separation represents one of the 4 color plates in the 4-color printing process. The most common and affordable separations are black and white printouts from a laser printer.
Separations are physical methods used to divide a sample into discrete components over a time or distance scale from an arbitrary starting time or distance. Thus, for example, in a horse race all horses start even and together. At the end of the race after circling the track they cross the finish line at different elapsed times and are also physically separated from one another. Many separation techniques work similarly by having the mixture start at the beginning of a column of separating material and components of the mixture exit the column one at a time as some flowing material (liquid or gas) helps to sweep them along. The ideal separation is fast, efficient (narrow peaks), and separates everything (selective). In complex real samples the ideal separation is rarely, if ever, achieved. Gas chromatography is a favorite separation technique in environmental analysis. Other techniques include high performance liquid chromatography, capillary electrophoresis, and thin-layer chromatogra
Separations refer to the film positives created for the individual colors of a design. There is one separation for each color of ink used on the press. The cost for creating film separation for your order can be determined by the art staff after reviewing your design. You will be quoted before any work is done. There is no additional charge for simple designs that can be outputted on vellum rather then a film positive.
