Limited color spectrum - printers will not be able to reproduce certain colors.If a printer needs say, a vibrant red, they'll need a bump screen to print that color. Use Photoshop or Corel Photo Paint (part of CorelDraw) to separate colors.The Color Profile for inks you're using.Spot color is the most common print technique in the industry, and has sometimes been called the screen printer's best friend. Knowledge of creating, applying and handling spot colors is essential to any screen printer. Logos, text, cartoons, line art, and more are all styles spot colors excel at reproducing. Spot color designs are usually created through the use of vector graphics programs such as CorelDRAW and Adobe Illustrator. There are many programs that can create spot colors. Spot colors (such as Pantone or custom mixed) can be printed as solid shapes at 100% tint or halftones by changing their tint value away from 100%. Traditionally limited to solid color with some halftones and vector illustrations.Spot color does not reproduce every kind of print for example, it doesn't work for photographic designs. Manual user file preparation (under-basing, choking, spreading).Vector graphic programs like Illustrator or CorelDraw.Simulated Process is a method used to reproduce almost any image on the market. It does so by overlapping and blending colors in a method similar to CMYK through using halftones and spot colors and/or PMS colors. Essentially, it's a way of taking an image that historically would have been printed via CMYK, but instead uses more opaque ink to create a more stable color and production friendly ink that can print almost any design for any garment. Designs that are too difficult to separate in a vector program, raster images, photographs, complex tonal illustrations - all doable with Simulated Process. Since the 90’s, Simulated Process has become more prominent and widely accepted because it's easier to separate, print, and achieve the best, completed garment compared to CMYK. Simulated Process is more stable during production, resulting less misprints. It's the preferred separation printing method. With any new technique, a printer should thoroughly research the method and practice before implementing in their shop. Facebook groups like Rogue Printers is a great place to ask experienced printers for help. YouTube is another great platform to learn more about the process.
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