| 摘要 |
A security device having one or more printed or transferred first areas, each first area having one or more first colors; and one or more printed or transferred second areas, each second area having one or more second colors. At least one of the first an second areas has a discontinuous pattern, and the first area or areas surrounds the second area or areas, each first area being distinguishable from the second area or areas. The first area(s) and/or second area(s) define an image. A camouflage pattern is provided over the image and at least an adjacent region surrounding the image, the camouflage pattern having a color and pattern such that in combination with the first and second areas, it renders the image substantially invisible when viewed under reflected light but visible when viewed in transmission. |
