Colour specifications
4-colour production
In 4-colour production define all colours as process colours (CMYK). It is very important, that the final PDF file contains only elements with process colours. If you have used spot colour definitions in a 4-colour job, check that also them have been changed to process colours. So you can be sure, that elements and colours are reproduced correctly in the print.
Spot colour
In sheetfed offset production it is possible to print a spot colour. Define the colour as a spot colour in layout software and prepare a PDF in same way as in normal CMYK production. Grafostil’s prepress system separates the spot colour as the fifth separation.