| 摘要 |
<p>A sign having a high efficiency prismatic lens reflective sheeting (8) supported and positioned to be a reflective backing for the sign and an image carrying sheet (7) and/or sheets separable from the reflective sheeting (8) positioned and supported to be in front of the reflecting face of the reflective sheeting (8) and being such as to allow light to pass through the image carrying sheet and/or sheets to then be reflected by the reflective sheeting back along an incoming direction. The image can be applied as a four colour printing process and can have a light white cover of about 5 % on a rear side of the image carrying sheet.</p> |
