The Risograph prints one color at time. Therefore, your final print files should be separated into individual grayscale images for each color that is to be printed. This is similar to preparing files for screen printing. 100% black in each color layer, will print out as 100% of whichever color you are printing. 90% black will print as 90% and so on.
For images prepared in Photoshop, separate out each color layer or channel into individual grayscale files.
When working with a CMYK file in Photoshop, when your file is ready to print, open the Channels Menu and select Split Channels. This will create new grayscale files, one for each color channel from your template.
- For more information on how to separate your CMYK channels in Photoshop here is a written tutorial.
- Alternatively here is a video tutorial by Risolve studio that gives a good walk through of how to convert your photos or artwork into spot colors for printing. It does so in the Adobe design suite. https://risolvestudio.com/pages/file-set-up