Spot UV is a liquid varnish applied on top of the printed surface that creates a high-gloss shine. Sometimes called a spot gloss, spot UV can be placed on top of an image such as a logo or title to make it pop out against a matte or uncoated background.
The varnish is applied using the same offset printing method as your printed pieces. A clean ink fountain in the printing press is filled with the Spot UV varnish and a new plate with the Spot UV image is inserted. The printed parent sheets are run through the press and then exposed to ultraviolet light hardening the varnish.
When a Spot UV is applied to a spot without any printing underneath, it is known as a ‘blind’ Spot UV.