| 摘要 |
[Object] A retroreflective sheeting that is provided with a set image having excellent anticounterfeit characteristic and information transmission characteristic is provided. [Solution] A micro glass sphere retroreflective sheeting 100 provided with set images having visual directions is the micro glass sphere retroreflective sheeting 100 provided with at least two adjacent set images (L1, L2) each of which is formed by a set of a large number of point images each having a visual direction so as to be visible from a predetermined direction, wherein a visible region of each of the point images forming the set images (L1, L2) has a conical dimension having an apex at each of the point images (P1, P2), an inclination angle (.beta.) of a center axis of the conical visible region of each of the point images (P1, P2) forming the set images (L1, L2) is set to 0 to 45 degrees, and a difference (.increment..beta.) between the inclination angles of the center axes in the conical visible regions of the point images (P1, P2) respectively in the set images adjacent to each other is set to range of between 5 and 25 degrees. |
