| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface image that can be produced without adding materials while modification of a tool surface is temporary, and that can be quickly and inexpensively changed.SOLUTION: An article having a first major surface with at least first and second regions is provided, in which the first region comprises a plurality of first structures having a first surface roughness, the second region comprises a plurality of second structures having a second surface roughness, and at least a portion of the at least first and second regions have a surface roughness difference between them that together exhibit at least a portion of a first image. Exemplary uses of the above article include tool-less macro-patterning of transflectors, customized appearance for retroreflective sheeting, incorporation of security features, decorative patterns for lighting diffusers, and images or logos in medical films without inks or contamination.SELECTED DRAWING: Figure 4C |
