DIRECTIONALLY IMAGED SHEETING

摘要

Sheeting (10) which carries images (I) that are viewable within limited angles of viewing from the front of the sheeting. The sheeting is prepared from retroreflective sheeting or from sheeting patterned after retroreflective sheeting, i.e., having a monolayer of microlenses like the monolayer of transparent microspheres 12 in retroreflective sheeting. A layer (18) of transparent material covers the back surface of the microlenses, and axial markings (20) are disposed at the back of the layer of transparent material. The markings are viewable from the front of the sheeting as an image.