Digital printing is a direct-to-part, all-digital process. The graphic is created in the designated printer software and can be changed on the fly. The ink is applied directly to the part to form the desired graphic. All colors are printed simultaneously.
Offset printing is a slower process that takes more time to set-up. Offset printing can only print one color at a time. Each color must be mixed prior to printing in order to achieve the desired color. The print cycle is typically faster than digital printing, however, the set-up time is drastically longer.
Overall, digital printing is ideal for full-color, high-quality graphics. Offset printing is better for a one or two color print at higher production volumes.