KEEP IT SIMPLE: While we can print full-color (CMYK) images on the disc, silkscreen printing works best with solid spot colors (no halftones/tints, no CMYK process inks). This is true of all silkscreen printing, whether on discs, t-shirts, posters, or any other surface material. While more simplistic in appearance than full-color, this provides the best print quality on the finished discs -- in this case less is more, without a doubt.
TONAL RANGE FOR HALFTONES: The tonal range that we can hold while silkscreening the discs is 15-85%. Tones lighter than 15% may blow out to zero, and those darker than 85% may fill in completely.(This does not affect 0% or 100%, of course.) As a result, we do not recommend using images with very dark or very light details.
IMAGE CONTENT: High-contrast images work best. We do not recommend using images with subtle details or changes in tone, as they will not be visible when silkscreened.
SKIN TONES: We recommend against using photographs of people for your on-disc printing. Unfortunately skin tones (both light and dark) fall within a range of tone that is difficult to print consistently with silkscreening, and can often take on unwanted color casts or become significantly lighter or darker than expected.
GRADIENTS / BLENDS: We strongly recommend against printing any gradients or blends on the disc, as they do not print well and often result in a blotchy or banded appearance.
NEUTRAL TONES: CMYK colors that are grey or near-grey (tan, creme, etc.) will often take on a color cast when silkscreened. For important neutral colors we recommend using a spot ink.