 February 2001 Vol. 31, No. 2, pp. 47–48. |
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Figure 6. A VCP promotion product is printed as a uniform dot pattern with two inks. One ink migrates during image development. The second ink, in a matching color, is permanent and nonmigrating, which camouflages the image. The transparent adhesive FrontPart causes only the migrating ink dots to appear, creating the image. |
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Figure 7. A VCP promotion product printed with an irregularly shaped dot pattern (a mezzotint) with two inks: a migrating ink and a permanent ink in a matching color that camouflages the image. |
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Figure 8. A self-expiring school visitors’ pass with an activating “smiley face” timing cover. Thousands of school districts nationwide are using these simple, low-cost passes as a part of the security enhancement procedures that have been implemented over the past few years. |