| 摘要 |
This invention pertains to security paper and methods of making such securit y paper. The invention comprises a light-colored base paper (42) having a non- protection area of a first thickness, and a protection area of a second thickness on at least one major surface of the base paper (42) wherein the first thickness is greater than the second thickness. The base paper (42) comprises colorant (50) whereby the protection area exhibits a translucence when viewed using transmitted light, and exhibits the colorant as a darker color indication, relative to the non-protection area, when viewed using reflected light. Transmission of light through a combination of paper fibers and the colorant, both being disposed at the protection area, is discernibly different from the transmission of light through the non-protection areas of the base paper, when viewed with a human eye.
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