Reverse UV coating is a surface-finishing technique that uses contrast between glossy and uncoated areas to create a visible design effect. Instead of applying gloss only to a small isolated element, the process often coats a larger background or surrounding area and leaves the selected artwork uncoated.
The difference in reflection makes the uncoated artwork visible through changes in light and surface sheen. The effect can be subtle from a direct view and more noticeable when the card moves or is viewed at an angle.
Reverse UV is applied after printing and must be planned as a separate coating layer. The final result depends on the cardstock, printed background, coating coverage, surface texture, and registration accuracy.